Osisko Mining Announces Corporate Governance Changes in Advance of Upcoming Shareholders’ Meeting

Posted on June 22, 2018November 8, 2023 by Yannick Fradette

TORONTO, June 22, 2018 (GLOBE NEWSWIRE) — Osisko Mining Inc. (TSX:OSK) (“Osisko” or the “Corporation”) today announces certain corporate governance changes on account of recommendations made by Institutional Shareholder Services in the course of their review of the matters to be voted on at the upcoming annual and special meeting of shareholders of Osisko to be held on June 29, 2018 (the “Meeting”).

In particular, the stock option plan of the Corporation (the “Stock Option Plan”) and certain other equity incentive amendments are being made or clarified as follows:

All awards under the Stock Option Plan (and all other forms of equity compensation) are subject to Osisko’s “Policy on Recoupment of Incentive Compensation” adopted on April 27, 2017 (the “Clawback Policy”). The Clawback Policy has no restrictions relating to when awards were granted. The full text of the Clawback Policy is available for review by shareholders on Corporation’s website at https://www.osiskomining.com/.
Consistent with evolving corporate governance best practices in Canada, the 500,000 options awarded to Mr. John Burzynski, Chief Executive Officer of Osisko, on January 11, 2018, with an exercise price of $3.46, have been amended to vest in equal tranches over a five-year period. These 500,000 options were scheduled to vest (or, in part, have vested) in three equal tranches on January 11, 2018, 2019 and 2020, and have been amended to vest in five equal tranches on January 11, 2019, 2020, 2021, 2022 and 2023.
Consistent with seeking greater alignment between stock performance and Chief Executive Officer total compensation, Mr. Burzynski, Chief Executive Officer of Osisko, is being awarded 25,000 restricted share units in consideration of the option amendments described above. These 25,000 restricted share units cliff vest after three years, and are subject to the achievement of performance-based criteria relating to asset development, financial performance, shareholder returns and sustainability.

Cautionary Note Regarding Forward-Looking Information

This news release contains “forward-looking information” within the meaning of the applicable Canadian securities legislation that is based on expectations, estimates, projections and interpretations as at the date of this news release. Any statement that involves predictions, expectations, interpretations, beliefs, plans, projections, objectives, assumptions, future events or performance (often, but not always, using phrases such as “expects”, or “does not expect”, “is expected”, “interpreted”, “management’s view”, “anticipates” or “does not anticipate”, “plans”, “budget”, “scheduled”, “forecasts”, “estimates”, “believes” or “intends” or variations of such words and phrases or stating that certain actions, events or results “may” or “could”, “would”, “might” or “will” be taken to occur or be achieved) are not statements of historical fact and may be forward-looking information and are intended to identify forward-looking information. Although the forward-looking information contained in this news release is based upon what management believes, or believed at the time, to be reasonable assumptions, Osisko cannot assure shareholders and prospective purchasers of securities of the Corporation that actual results will be consistent with such forward-looking information, as there may be other factors that cause results not to be as anticipated, estimated or intended, and neither Osisko nor any other person assumes responsibility for the accuracy and completeness of any such forward-looking information. Osisko does not undertake, and assumes no obligation, to update or revise any such forward-looking statements or forward-looking information contained herein to reflect new events or circumstances, except as may be required by law.

CONTACT INFORMATION:
John Burzynski
President & Chief Executive Officer
(416) 363-8653

Shareholders who have questions or have not received their proxy or voting instruction form may contact the Corporation’s Proxy Solicitation Agent:

Laurel Hill Advisory Group
Toll free: 1-877-452-7184 or 416-304-0211 (Collect outside North America)
Email: assistance@laurelhill.com

OSISKO FILES NI 43-101 TECHNICAL REPORT FOR ITS MINERAL RESOURCE ESTIMATE ON THE WINDFALL LAKE PROJECT

Posted on June 12, 2018November 8, 2023 by Yannick Fradette

(Toronto, June 12, 2018) Osisko Mining Inc. (OSK:TSX, “Osisko” or the “Corporation”) announces the filing of an independent technical report in accordance with National Instrument 43-101 – Standards of Disclosure for Mineral Projects (“NI 43-101”) on its 100% owned Windfall gold deposit, located in the Abitibi greenstone belt, Urban Township, Eeyou Istchee James Bay, Québec. The technical report, titled “Technical Report and Mineral Resource Estimate for the Windfall Lake Project, Windfall Lake and Urban-Barry Properties” and dated June 12, 2018 (effective date of May 14, 2018), has been prepared by InnovExplo Inc. from Val-d’Or, Québec, and is available on SEDAR (www.sedar.com) under Osisko’s issuer profile.

About the Windfall Lake Gold Deposit

The Windfall Lake gold deposit is located between Val-d’Or and Chibougamau in the Abitibi region of Québec, Canada. The mineral resource defined by Osisko comprises 2,382,000 tonnes at 7.85 g/t Au (601,000 ounces) in the indicated mineral resource category and 10,605,000 tonnes at 6.70 g/t Au (2,284,000 ounces) in the inferred mineral resource category. The Windfall Lake gold deposit is currently one of the highest grade resource-stage gold projects in Canada. Mineralization occurs in four principal zones: Lynx, Zone 27, Caribou, and Underdog. All zones comprise sub-vertical lenses following intrusive porphyry contacts plunging to the northeast. The deposit is well defined from surface to a depth of 900 metres and remains open along strike and at depth. Mineralization has been identified only 30 metres from surface in some areas and as deep as 1,200 metres in others, with significant potential to extend mineralization down-plunge and at depth.

About Osisko Mining Inc.

Osisko is a mineral exploration company focused on the acquisition, exploration, and development of precious metal resource properties in Canada. Osisko holds a 100% in the high-grade Windfall Lake gold deposit located between Val-d’Or and Chibougamau in Québec and holds a 100% undivided interest in a large area of claims in the surrounding Urban Barry area and nearby Quevillon area (over 3,300 square kilometres), a 100% interest in the Marban project located in the heart of Québec’s prolific Abitibi gold mining district, and properties in the Larder Lake Mining Division in northeast Ontario, including the Jonpol and Garrcon deposits on the Garrison property, the Buffonta past producing mine and the Gold Pike mine property. The Corporation also holds interests and options in a number of additional properties in northern Québec and Ontario. Osisko continues to be well financed with approximately $150 million in cash and investments as of March 31, 2018.

Qualified Person
The scientific and technical content in this press release has been reviewed and approved by Mr. Mathieu Savard, P.Geo (OGQ #510), Vice President Exploration (Québec) of Osisko, who is a “qualified person” within the meaning of NI 43-101.

Cautionary Note Regarding Forward-Looking Information

This news release contains “forward-looking information” within the meaning of the applicable Canadian securities legislation that is based on expectations, estimates, projections and interpretations as at the date of this news release. The information in this news release about the Windfall Lake gold deposit being one of the highest grade resource-stage gold projects in Canada; the significance of the mineral resource estimate published by the Corporation on May 14, 2018 in respect of the Windfall Lake gold deposit; the significance of new results from the ongoing drill program at the Windfall Lake gold project; the type of drilling included in the drill program (definition, expansion and exploration drilling in and around the main Windfall Lake gold deposit and the adjacent Lynx deposit, and exploration drilling on the greater deposit and Urban-Barry project area); potential mineralization; the potential to extend mineralization up and down-plunge and at depth at the Windfall Lake gold deposit; the ability to realize upon any mineralization in a manner that is economic; the ability to complete any proposed exploration activities and the results of such activities, including the continuity or extension of any mineralization; and any other information herein that is not a historical fact may be “forward-looking information”. Any statement that involves discussions with respect to predictions, expectations, interpretations, beliefs, plans, projections, objectives, assumptions, future events or performance (often but not always using phrases such as “expects”, or “does not expect”, “is expected”, “interpreted”, “management’s view”, “anticipates” or “does not anticipate”, “plans”, “budget”, “scheduled”, “forecasts”, “estimates”, “believes” or “intends” or variations of such words and phrases or stating that certain actions, events or results “may” or “could”, “would”, “might” or “will” be taken to occur or be achieved) are not statements of historical fact and may be forward-looking information and are intended to identify forward-looking information. This forward-looking information is based on reasonable assumptions and estimates of management of the Corporation. at the time it was made, involves known and unknown risks, uncertainties and other factors which may cause the actual results, performance or achievements of Osisko to be materially different from any future results, performance or achievements expressed or implied by such forward-looking information. Such factors include, among others, risks relating to the ability of exploration activities (including drill results) to accurately predict mineralization; errors in management’s geological modelling; the ability of Osisko to complete further exploration activities, including drilling; property interests in the Windfall Lake gold project; the ability of the Corporation to obtain required approvals and complete transactions on terms announced; the results of exploration activities; risks relating to mining activities; the global economic climate; metal prices; dilution; environmental risks; and community and non-governmental actions. Although the forward-looking information contained in this news release is based upon what management believes, or believed at the time, to be reasonable assumptions. Osisko cannot assure shareholders and prospective purchasers of securities of the Corporation that actual results will be consistent with such forward-looking information, as there may be other factors that cause results not to be as anticipated, estimated or intended, and neither Osisko nor any other person assumes responsibility for the accuracy and completeness of any such forward-looking information, Osisko does not undertake, and assumes no obligation, to update or revise any such forward-looking statements or forward-looking information contained herein to reflect new events or circumstances, except as may be required by law.

For further information please contact:

John Burzynski. President and Chief Executive Officer

Telephone: (416) 363-8653

OSISKO INTERSECTS 20.0 g/t Au OVER 8.7 METRES AT WINDFALL

Posted on June 12, 2018November 8, 2023 by Yannick Fradette

High-Grade Infill Hits in Underdog and Zone 27 and 14.4 g/t Au over 11.1 metres in Bobcat

(Toronto, June 12, 2018) Osisko Mining Inc. (OSK:TSX. “Osisko” or the “Corporation”) is pleased to provide new results from the ongoing drill program at its 100% owned Windfall Lake gold project located in the Abitibi greenstone belt, Urban Township, Eeyou Istchee James Bay, Québec. The 800,000 metre drill program commenced in late 2015 is now focussed on infill drilling within the main Windfall gold deposit and the adjacent Lynx deposit (located immediately NE of Windfall). Exploration and expansion drilling is also continuing at Windfall with several deep holes in progress to investigate the down-plunge areas in and around the Underdog and Lynx zones.

Today’s results include significant new analytical results from 74 intercepts in 35 drill holes and 8 wedges focused on infill drilling in the Windfall deposit are presented below.

Highlights from the new results include: 20.0 g/t Au over 8.7 metres and 22.5 g/t Au over 4.6 metres in OSK-W-18-747-W1; 14.4 g/t Au over 11.1 metres in OSK-W-18-1472; 69.6 g/t Au over 2.0 metres in OSK-W-17-903; 19.3 g/t Au over 5.9 metres in OSK-W-18-1532; 19.0 g/t Au over 5.9 metres in OSK-W-17-1184; 10.8 g/t Au over 9.1 metres in OSK-W-17-1125-W3; 19.6 g/t Au over 4.0 metres in OSK-W-18-1336-W2. Maps showing hole locations and full analytical results are available at www.osiskomining.com.

Hole No.	From (m)	To (m)	Interval (m)	Au (g/t) uncut	Au (g/t) cut to 100 g/t	Mineralized Area
OSK-EAG-12-314	836.7	838.8	2.1	4.60		Underdog
OSK-EAG-13-477	805.9	808.0	2.1	9.19		Underdog
including	806.0	807.0	1.0	19.1		Underdog
	1058.0	1066.0	8.0	9.31		Underdog
including	1060.0	1060.7	0.7	24.3
and	1065.0	1066.0	1.0	37.1
OSK-W-17-778	1221.0	1223.8	2.8	4.52		Underdog
	1232.0	1234.5	2.5	11.3		Underdog
including	1234.0	1234.5	0.5	55.2		Underdog
	1322.0	1324.3	2.3	9.61		Underdog
including	1323.0	1323.6	0.6	34.1		Underdog
OSK-W-17-903	554.0	556.0	2.0	69.6	35.6	Zone 27
including	554.9	555.6	0.7	197	100	Zone 27
OSK-W-17-1056	35.0	37.0	2.0	35.5	20.4	Zone 27
including	35.0	35.4	0.4	176	100	Zone 27
OSK-W-17-1125-W3	486.0	495.1	9.1	10.8		Caribou
including	489.0	489.4	0.4	100		Caribou
OSK-W-17-1184	113.8	119.7	5.9	19.0	15.1	Zone 27
including	116.4	117.0	0.6	139	100	Zone 27
OSK-W-17-1202	849.3	855.0	5.7	10.1		Zone 27
OSK-W-17-1239	390.0	392.0	2.0	33.2	29.5	Zone 27
including	390.0	390.5	0.5	115	100	Zone 27
OSK-W-18-747-W1	666.2	669.8	3.6	4.75		Underdog
	683.0	685.0	2.0	12.2		Underdog
including	683.0	683.6	0.6	24.2		Underdog
	714.0	716.2	2.2	7.64		Underdog
	721.3	730.0	8.7	20.0	19.7	Underdog
including	725.9	728.0	2.1	64.4	63.1
including	726.5	727.1	0.6	105	100
	819.0	821.0	2.0	11.9		Underdog
including	819.0	820.0	1.0	23.8		Underdog
	932.0	936.6	4.6	22.5	20.6	Underdog
including	932.0	933.2	1.2	78.9	71.7	Underdog
OSK-W-18-762-W1	902.0	904.5	2.5	8.70		Underdog
including	904.0	904.5	0.5	19.9		Underdog
OSK-W-18-1066-W1	683.9	685.8	1.9	26.0		Underdog
including	683.9	684.6	0.7	70.4		Underdog
	760.0	762.0	2.0	6.6		Underdog
including	760.0	761.0	1.0	13.0		Underdog
	769.0	774.0	5.0	4.79		Underdog
including	769.0	770.0	1.0	16.1		Underdog
OSK-W-18-1336-W2	1132.0	1136.0	4.0	19.6	13.6	Underdog
including	1134.7	1135.1	0.4	160	100	Underdog
OSK-W-18-1402-W3	954.0	956.0	2.0	4.03		Underdog
	1144.0	1146.0	2.0	6.57		Underdog
including	1145.2	1145.6	0.4	30.6		Underdog
OSK-W-18-1430-W1	1103.0	1105.0	2.0	26.0	20.4	Underdog
including	1104.0	1104.4	0.4	128	100	Underdog
OSK-W-18-1431-W2	854.4	856.5	2.1	11.3		Underdog
including	854.9	855.5	0.6	37.8		Underdog
OSK-W-18-1434	752.0	754.0	2.0	4.76		Underdog
including	752.7	753.3	0.6	15.1		Underdog
OSK-W-18-1448	324.0	326.0	2.0	6.89		Caribou
OSK-W-18-1449	48.4	51.2	2.8	3.71		Bobcat
OSK-W-18-1463	81.0	83.0	2.0	14.6		Zone 27
including	81.6	82.6	1.0	28.4		Zone 27
	101.8	112.2	10.4	3.24		Zone 27
including	101.8	102.5	0.7	17.3		Zone 27
OSK-W-18-1465	152.0	154.3	2.3	3.24		Bobcat
including	152.0	152.6	0.6	12.0		Bobcat
OSK-W-18-1466	129.2	131.2	2.0	4.26		Zone 27
including	130.7	131.2	0.5	14.3		Zone 27
OSK-W-18-1468	46.7	50.0	3.3	10.3		Caribou
including	47.2	47.5	0.3	27.2		Caribou
OSK-W-18-1471	144.0	146.0	2.0	14.9
OSK-W-18-1472	45.0	56.1	11.1	14.4		Bobcat
including	50.4	53.0	2.6	38.4		Bobcat
OSK-W-18-1473	46.7	49.6	2.9	11.9		Caribou
	373.0	375.3	2.3	3.87		Zone 27
OSK-W-18-1476	230.7	233.0	2.3	3.05		Zone 27
including	230.7	231.0	0.3	12.6		Zone 27
	251.0	253.0	2.0	6.38		Zone 27
including	252.0	252.4	0.4	30.1		Zone 27
OSK-W-18-1490	34.7	37.3	2.6	7.34		Bobcat
including	35.7	36.3	0.6	19.2		Bobcat
OSK-W-18-1494	110.4	112.4	2.0	14.8		Bobcat
including	110.9	111.6	0.7	36.5		Bobcat
	190.7	192.9	2.2	5.71		Bobcat
including	191.4	192.5	1.1	11.0		Bobcat
OSK-W-18-1497	288.0	295.0	7.0	10.0		Zone 27
including	292.0	292.8	0.8	46.9		Zone 27
	305.0	311.0	6.0	8.53		Zone 27
including	310.4	311.0	0.6	42.3		Zone 27
OSK-W-18-1498	272.0	274.0	2.0	5.91		Zone 27
	351.0	353.0	2.0	3.58		Zone 27
OSK-W-18-1499	38.5	41.0	2.5	10.8		Caribou
including	38.5	39.0	0.5	39.8		Caribou
	330.0	335.0	5.0	7.38		Zone 27
including	333.7	334.4	0.7	17.7		Zone 27
	336.5	338.6	2.1	3.02		Zone 27
OSK-W-18-1501	112.8	114.7	1.9	37.4	26.3	Bobcat
including	113.9	114.4	0.5	142	100	Bobcat
OSK-W-18-1505	78.9	81.0	2.1	17.0		Caribou
including	79.5	80.5	1.0	34.7		Caribou
	88.0	90.4	2.4	4.50		Caribou
OSK-W-18-1506	208.9	211.0	2.1	6.11		Caribou
OSK-W-18-1509	47.7	53.3	5.6	4.27		Bobcat
including	51.5	51.9	0.4	28.6		Bobcat
	213.3	215.5	2.2	5.05		Bobcat
including	214.4	214.8	0.4	26.1		Bobcat
OSK-W-18-1510	360.2	362.4	2.2	4.81		Zone 27
OSK-W-18-1517	131.0	133.4	2.4	3.60		Caribou
	263.0	265.6	2.6	4.34		Zone 27
	290.0	292.0	2.0	5.72		Zone 27
OSK-W-18-1518	112.0	114.6	2.6	3.57		Caribou
	117.0	121.0	4.0	6.95		Caribou
including	118.7	120.0	1.3	11.4		Caribou
	288.4	291.0	2.6	20.6		Caribou
including	288.4	289.0	0.6	86.1		Caribou
	332.0	334.0	2.0	5.87		Zone 27
OSK-W-18-1526	329.0	331.0	2.0	7.32		Zone 27
including	330.0	331.0	1.0	14.4		Zone 27
	335.0	337.0	2.0	3.15		Zone 27
including	335.6	336.0	0.4	12.3		Zone 27
OSK-W-18-1532	85.0	87.0	2.0	15.7		Caribou
including	86.3	87.0	0.7	44.6		Caribou
	177.3	179.7	2.4	19.7	13	Caribou
including	177.3	177.6	0.3	154	100	Caribou
	271.0	273.1	2.1	3.19		Caribou
	357.7	363.6	5.9	19.3	11	Zone 27
including	358.2	358.7	0.5	198	100	Zone 27
OSK-W-18-1543	219.4	222.6	3.2	4.97		Zone 27
including	222.3	222.6	0.3	45.0		Zone 27
OSK-W-18-1552	260.0	262.0	2.0	7.31		Zone 27
including	260.0	261.0	1.0	14.1		Zone 27
	283.0	287.5	4.5	6.29		Zone 27
including	283.0	284.0	1.0	14.7		Zone 27

Notes: True widths are estimated at 65 – 80% of the reported core length interval. See “Quality Control” below.

Hole Number	Azimuth (°)	Dip (°)	Length (m)	UTM E	UTM N	Section
OSK-EAG-12-314	330	-59	1062	452534	5434589	2600
OSK-EAG-13-477	330	-61	1194	452401	5434431	2400
OSK-W-17-778	331	-58	1362	452689	5434338	2600
OSK-W-17-903	329	-56	801	452539	5434692	2650
OSK-W-17-1056	150	-46	120	452003	5434746	2225
OSK-W-17-1125-W3	331	-58	1086	452563	5434570	2625
OSK-W-17-1184	320	-51	210	452068	5434617	2200
OSK-W-17-1202	328	-52	932	452975	5434580	2975
OSK-W-17-1239	326	-53	939	452417	5434558	2475
OSK-W-18-747-W1	331	-57	1032	452449	5434488	2475
OSK-W-18-762-W1	332	-56	1299	452730	5434409	2675
OSK-W-18-1066-W1	332	-56	1137	452488	5434436	2475
OSK-W-18-1336-W2	335	-61	1193	452616	5434449	2600
OSK-W-18-1402-W3	330	-59	1182	452616	5434449	2600
OSK-W-18-1430-W1	339	-60	1125	452318	5434380	2300
OSK-W-18-1431-W2	337	-62	1140	452287	5434336	2250
OSK-W-18-1434	335	-55	1026	452452	5434496	2475
OSK-W-18-1448	333	-52	483	452688	5434808	2850
OSK-W-18-1449	145	-48	603	452901	5435120	3175
OSK-W-18-1463	161	-45	135	451928	5434746	2150
OSK-W-18-1465	330	-50	166	452661	5434807	2825
OSK-W-18-1466	345	-47	300	451979	5434531	2075
OSK-W-18-1468	328	-55	66	452250	5434593	2350
OSK-W-18-1471	146	-45	147	451896	5434763	2125
OSK-W-18-1472	146	-47	300	452626	5434902	2825
OSK-W-18-1473	329	-55	387	452250	5434593	2350
OSK-W-18-1476	334	-46	294	452015	5434501	2100
OSK-W-18-1490	334	-55	129	452750	5434857	2925
OSK-W-18-1494	332	-50	231	452834	5434895	3000
OSK-W-18-1497	331	-52	363	452350	5434664	2475
OSK-W-18-1498	323	-61	384	452234	5434594	2350
OSK-W-18-1499	326	-52	378	452312	5434630	2425
OSK-W-18-1501	140	-51	291	452919	5435023	3150
OSK-W-18-1505	328	-45	342	452350	5434661	2475
OSK-W-18-1506	329	-53	417	452366	5434643	2475
OSK-W-18-1509	329	-51	228	452907	5434997	3125
OSK-W-18-1510	325	-58	405	452279	5434572	2375
OSK-W-18-1517	330	-49	348	452385	5434672	2500
OSK-W-18-1518	330	-54	393	452266	5434569	2350
OSK-W-18-1526	330	-51	369	452297	5434598	2400
OSK-W-18-1532	328	-61	426	452271	5434610	2375
OSK-W-18-1543	327	-52	294	452251	5434639	2375
OSK-W-18-1552	332	-52	366	452308	5434640	2425

OSK-EAG-12-314 intersected 4.60 g/t Au over 2.1 metres in Underdog. Mineralization contains 5% pyrite and a clustered quartz vein with local visible gold within a fragmental porphyritic felsic unit with moderate sericitization.

OSK-EAG-13-477 intersected 9.19 g/t Au over 2.1 metres and 9.31 g/t Au over 8.0 metres in Underdog. The first interval is composed of 40% pyrite in pervasive silica flooding with tourmaline in a porphyritic felsic dike. The second interval is composed of up to 5% pyrite tourmaline stringers with 1% chalcopyrite at a sericitized and silicified contact between two porphyritic felsic dikes.

OSK-W-17-778 intersected 4.52 g/t Au over 2.8 metres, 11.3 g/t Au over 2.5 metres and 9.61 g/t Au over 2.3 metres in Underdog. Mineralization contains up to 3% pyrite stringers,10% pyrite in pervasive silica flooding and local visible gold. The host is a porphyritic felsic dike with moderate silica and sericite alteration.

OSK-W-17-903 intersected 69.6 g/t Au over 2.0 metres in Zone 27. Mineralization contains up to 10% pyrite stringers and 5% disseminated pyrite in a bleached andesite with moderate silica and sericite alteration.

OSK-W-17-1056 intersected 35.5 g/t Au over 2.0 metres in Zone 27. Mineralization contains 1% disseminated pyrite and quartz tourmaline veins in a slightly sericitized and silicified rhyolite.

OSK-W-17-1125-W3 intersected 10.8 g/t Au over 9.1 metres in Caribou. Mineralization contains 5% pyrite stringers and 10% pyrite with pervasive silica flooding in a bleached felsic dike.

OSK-W-17-1184 intersected 19.0 g/t Au over 5.9 metres in Zone 27. Mineralization contains up to 13% pyrite stringers and clusters at the contact between a gabbro with strong fuchsite alteration and a sericitized porphyritic felsic dike.

OSK-W-17-1202 intersected 10.1 g/t Au over 5.7 metres in Zone 27. Mineralization contains up to 15% pyrite in pervasive silica flooding, 10% pyrite-tourmaline stringers, 2% disseminated pyrite and traces of chalcopyrite within a porphyritic felsic dike with silica and sericite alteration.

OSK-W-17-1239 intersected 33.2 g/t Au over 2.0 metres in Zone 27. Mineralization contains up to 30% pyrite stringers and 2% pyrite-tourmaline stringers hosted in a bleached andesite.

OSK-W-18-747-W1 intersected six intervals in Underdog: 4.75 g/t Au over 3.6 metres, 12.2 g/t Au over 2.0 metres, 7.64 g/t Au over 2.2 metres, 20.0 g/t Au over 8.7 metres , 11.9 g/t Au over 2.0 metres and 22.5 g/t Au over 4.6 metres. Mineralization of all the intervals contains up to 20% disseminated pyrite or in stringers with pervasive silica flooding and local visible gold within strongly silicified and sericitized porphyritic felsic dikes.

OSK-W-18-762-W1 intersected 8.70 g/t Au over 2.5 metres in Underdog. Mineralization contains trace disseminated and clustered pyrite hosted in a porphyritic felsic dike with moderate sericitization and weak silicification.

OSK-W-18-1066-W1 intersected 26.0 g/t Au over 1.9 metres, 6.6 g/t Au over 2.0 metres and 4.79 g/t Au over 5.0 metres in Underdog. Mineralization of all three intervals is composed of 1% disseminated and stringer pyrite in moderately sericitized porphyritic felsic dikes.

OSK-W-18-1336-W2 intersected 19.6 g/t Au over 4.0 metres in Underdog. Mineralization is composed of up to 5% pyrite in pervasive silica flooding and 1% pyrite stringers in a porphyritic felsic dike with moderate sericite, silica and chlorite alteration.

OSK-W-18-1402-W3 intersected 4.03 g/t Au over 2.0 metres and 6.57 g/t Au over 2.0 metres in Underdog. The first interval contains up to 5% pyrite-stringers and 1% disseminated pyrite in a bleached porphyritic felsic dike with moderate sericitization and chloritization and weak silicification. The second interval contains 1% pyrite stringers, 2% disseminated pyrite, and local visible gold in pervasive silica flooding at the contact with carbonate veinlets. The host is porphyritic felsic dike with moderate sericite and silica alteration.

OSK-W-18-1430-W1 intersected 26.0 g/t Au over 2.0 metres in Underdog. Mineralization contains 5% disseminated pyrite and trace disseminated chalcopyrite in a strongly chloritized andesite with weak sericitization and silicification.

OSK-W-18-1431-W2 intersected 11.3 g/t Au over 2.1 metres in Underdog. Mineralization contains up to 3% pyrite stringers, 1% pyrite in ptygmatic tourmaline veins, and local visible gold in a porphyritic felsic dike with moderate sericite, silica and carbonate and fuchsite alteration.

OSK-W-18-1434 intersected 4.76 g/t Au over 2.0 metres in Underdog. Mineralization contains up to 2% disseminated pyrite, traces of chalcopyrite, 2% pyrite in pervasive silica flooding, 1% pyrite in carbonate veinlets, and 1% pyrite tourmaline stringers. The host is a fragmental felsic dike with strong silica and sericite alteration.

OSK-W-18-1448 intersected 6.89 g/t Au over 2.0 metres in Caribou extension. Mineralization contains 1% pyrite in tourmaline ptygmatic veins in a rhyolite with moderate sericite and fuchsite alteration and weak silicification.

OSK-W-18-1449 intersected 3.71 g/t Au over 2.8 metres in Bobcat. Mineralization contains 1% pyrite clusters with quartz-tourmaline veins at a sericitized contact between a porphyritic felsic dike and a fragmental felsic dike.

OSK-W-18-1463 intersected 14.6 g/t Au over 2.0 metres and 3.24 g/t Au over 10.4 metres in Zone 27. The first interval contains up to 2% pyrite-tourmaline stringers and 5% pyrite in pervasive silica flooding hosted in foliated porphyritic felsic dike with strong sericite and moderate silica alteration. The second interval is composed of 1% pyrite-tourmaline stringers and 2% pyrite clusters in a sericitized and chloritized porphyritic felsic dike.

OSK-W-18-1465 intersected 3.24 g/t Au over 2.3 metres in Bobcat. Mineralization contains up to 7% pyrite with pervasive silica flooding hosted in a moderately silicified and sericitized rhyolite.

OSK-W-18-1466 intersected 4.26 g/t Au over 2.0 metres in Zone 27. Mineralization contains two 30-centimetre massive pyrite bands within a porphyritic felsic intrusion with moderate sericitization and patchy silica alteration.

OSK-W-18-1468 intersected 10.3 g/t Au over 3.3 metres in Caribou. Mineralization contains 3% pyrite stringers and a 30-centimetre wide massive pyrite zone hosted in a silicified and sericitized rhyolite.

OSK-W-18-1471 intersected 14.9 g/t Au over 2.0 metres not related to any known zone. Mineralization contains 3% pyrite clusters and trace pyrite-tourmaline stringers in a chloritized and slightly sericitized rhyolite.

OSK-W-18-1472 intersected 14.4 g/t Au over 11.1 metres in Bobcat. Mineralization contains 5% pyrite associated with 10-centimetre crustiform veins, 1% pyrite-tourmaline stringers and local visible gold in a moderately sericitized and silicified rhyolite in contact with a felsic porphyritic intrusion with moderate silica and sericite alteration.

OSK-W-18-1473 intersected 11.9 g/t Au over 2.9 metres in Caribou and 3.87 g/t Au over 2.3 metres in Zone 27. The first interval contains 10% pyrite stringers, one 15-centimetre-wide zone of massive pyrite, and one 7-centimetre wide pyrite-tourmaline stringer hosted in a silicified and sericitized rhyolite near a fault. The second interval contains up to 5% ptygmatic pyrite-tourmaline stringers hosted in a sericitized felsic porphyritic intrusion and a fuchsitized gabbro.

OSK-W-18-1476 intersected 3.05 g/t Au over 2.3 metres and 6.38 g/t Au over 2.0 metres in Zone 27. Mineralization contains up to 5% pyrite stringers and trace sphalerite in quartz veins hosted in a moderately sericitized and silicified rhyolite injected by a felsic porphyritic dike. The second interval contains 5% pyrite stringers in a moderately sericitized felsic porphyritic dike.

OSK-W-18-1490 intersected 7.34 g/t Au over 2.6 metres in Bobcat. Mineralization contains up to 10% interstitial pyrite and pyrite stringers, 3% pyrite in tourmaline ptygmatic veinlets, and 1% disseminated pyrite hosted within a sericitized and bleached gabbro in contact with a sericitized felsic porphyritic dike.

OSK-W-18-1494 intersected 14.8 g/t Au over 2.0 metres and 5.71 g/t Au over 2.2 metres in Bobcat. Mineralization contains local visible gold and 3% pyrite associated with folded and massive crustiform veins, 5% pyrite stringers and 5% disseminated pyrite within a strongly sericitized and bleached gabbro.

OSK-W-18-1497 intersected 10.0 g/t Au over 7.0 metres and 8.53 g/t Au over 6.0 metres in Zone 27. The first interval contains up to 3% pyrite stringers in a bleached andesite at the contact with a felsic porphyritic dike with 7% pyrite, 3% sphalerite and trace chalcopyrite in pervasive silica flooding. The second interval contains up to 5% disseminated pyrite and 3% pyrite stringers at the contact between a strongly sericitized felsic porphyritic intrusion and andesite.

OSK-W-18-1498 intersected 5.91 g/t Au over 2.0 metres and 3.58 g/t Au over 2.0 metres in Zone 27. Mineralization contains up to 10% pyrite stringers in a porphyritic felsic dike with moderate sericite and chlorite alteration and weak silicification.

OSK-W-18-1499 intersected 10.8 g/t Au over 2.5 metres in Caribou and 7.38 g/t Au over 5.0 metres and 3.02 g/t Au over 2.1 metres in Zone 27. The first interval in Caribou contains 2% disseminated pyrite in a foliated rhyolite with moderate sericite, chlorite and carbonate alteration and weak silicification. The second and third intervals in Zone 27 contain up to 25% disseminated pyrite, 15% pyrite-tourmaline stringers and clusters within smoky silica-tourmaline-chlorite and sericitized felsic porphyritic intrusion.

OSK-W-18-1501 intersected 37.4 g/t Au over 1.9 metres in Bobcat. Mineralization contains local visible gold, 1% pyrite in crustiform veins, 10% pyrite clusters and trace disseminated pyrite in a sericitized rhyolite.

OSK-W-18-1505 intersected 17.0 g/t Au over 2.1 metres and 4.5 g/t Au over 2.4 metres in Caribou. Mineralization contains up to 10% pyrite stringers with 30% pervasive silica flooding within a rhyolite with moderate sericite alteration.

OSK-W-18-1506 intersected 6.11 g/t Au over 2.1 metres in Caribou. Mineralization contains up to 30% pyrite in a 10 centimetres-wide stringer hosted in a sericitized and silicified rhyolite.

OSK-W-18-1509 intersected 4.27 g/t Au over 5.6 metres and 5.05 g/t Au over 2.2 metres in Bobcat. The first interval contains 5% interstitial pyrite within chlorite-silica hydrothermal breccia, 40% dismembered crustiform veins and fuchsite fragments hosted in a sericitized rhyolite. The second interval contains up to 5% pyrite within a dismembered quartz-carbonate vein and 3% pyrite stringers hosted in a weakly sheared, fuchsite and sericite altered gabbro.

OSK-W-18-1510 intersected 4.81 g/t Au over 2.2 metres in Zone 27. Mineralization contains massive pyrite over 1.5 metres with trace tourmaline in ptygmatic veinlets including 8% disseminated pyrite and stringers hosted in bleached and silicified andesite.

OSK-W-18-1517 intersected 3.60 g/t Au over 2.4 metres in Caribou, and 4.34 g/t Au over 2.6 metres and 5.72 g/t Au over 2.0 metres in Zone 27. The first interval in Caribou contains up to 10% pyrite stringers, 1% pyrite clusters, trace tourmaline stringers with pervasive silica flooding within a sericitized and silicified porphyritic felsic dike. The second and third intervals in Zone 27 contain up to 25% semi-massive pyrite, 10% pyrite stringers with traces of tourmaline hosted in a sericitized porphyritic felsic dike.

OSK-W-18-1518 intersected 3.57 g/t Au over 2.6 metres, 6.95 g/t Au over 4.0 metres, 20.6 g/t Au over 2.6 metres in Caribou and 5.87 g/t au over 2.0 metres in Zone 27. Intervals form Caribou contain 3% pyrite stringers and up to 50% semi-massive pyrite associated with tourmaline ptygmatic and quartz-tourmaline veinlets in a sericitized porphyritic felsic dike or a sericitized andesite. The interval in Zone 27 contains 3% pyrite stringers or clusters within a bleached andesite injected by a felsic dike.

OSK-W-18-1526 intersected 7.32 g/t Au over 2.0 metres and 3.15 g/t Au over 2.0 metres in Zone 27. Mineralization contains up to 2% pyrite stringers and local visible gold hosted in a bleached fragmental andesite.

OSK-W-18-1532 intersected 15.7 g/t Au over 2.0 metres, 19.7 g/t Au over 2.4 metres and 3.19 g/t Au over 2.1 metres in Caribou and 19.3 g/t Au over 5.9 metres in Zone 27. The first and second intervals contain local visible gold, traces pyrite stringers and clusters, locally up to 40% pyrite and 3% chalcopyrite with ptygmatic tourmaline veinlets hosted in a rhyolite. The third interval is composed of 2% pyrite-chalcopyrite stringers in a bleached andesite at the contact with silicified porphyritic dike with 20% pyrite-tourmaline centimetric bands and local visible gold. The interval form Zone 27 contains up to 7% pyrite and 5% pyrite with ptygmatic tourmaline vein hosted in a sericitized andesite.

OSK-W-18-1543 intersected 4.97 g/t Au over 3.2 metres in Zone 27. Mineralization contains up to 4% pyrite stringers, 15% semi-massive pyrite over two 30-centimetres interval, trace tourmaline ptygmatic veinlet and trace chalcopyrite hosted in a sericitized and silicified felsic porphyritic intrusion.

OSK-W-18-1552 intersected 7.31 g/t Au over 2.0 metres and 6.29 g/t Au over 4.5 metres in Zone 27. The first interval contains up to 4% pyrite clusters in an andesite with moderate silica, sericite and carbonate alteration. The second interval contains 1% pyrite in folded smoky quartz veins and 10% pyrite stringers hosted in a moderate sericitized and silicified porphyritic dike with locally 15% semi-massive pyrite (two 30-centimetres intervals), trace tourmaline ptygmatic veinlet and trace chalcopyrite.

Qualified Person

The scientific and technical content of this news release has been reviewed, prepared and approved by Mr. Louis Grenier, M.Sc.A., P.Geo. (OGQ 800), Project Manager of the Windfall Lake gold project, who is a “qualified person” as defined by National Instrument 43-101 – Standards of Disclosure for Mineral Projects (“NI 43-101”).

Quality Control and Reporting Protocols

True widths determinations are estimated at 65-80% of the reported core length intervals for most of the zones. Assays are uncut except where indicated. Intercepts occur within geological confines of major zones but have not been correlated to individual vein domains at this time. Reported intervals include minimum weighted averages of 3.0 g/t Au diluted over core lengths of at least 2.0 metres. All NQ core assays reported were obtained by either 1-kilogram screen fire assay or standard 50-gram fire-assaying-AA finish or gravimetric finish at (i) ALS Laboratories in Val d’Or, Québec, Thunder Bay, Ontario, Sudbury, Ontario or Vancouver, British Colombia, or (ii) Bureau Veritas in Timmins, Ontario. The 1-kilogram screen assay method is selected by the geologist when samples contain coarse gold or present a higher percentage of pyrite than surrounding intervals. Selected samples are also analyzed for multi-elements, including silver, using an Aqua Regia-ICP-AES method at ALS Laboratories. Drill program design, Quality Assurance/Quality Control (“QA/QC”) and interpretation of results is performed by qualified persons employing a QA/QC program consistent with NI 43-101 and industry best practices. Standards and blanks are included with every 20 samples for QA/QC purposes by the Corporation as well as the lab. Approximately 5% of sample pulps are sent to secondary laboratories for check assay.

About the Windfall Lake Gold Deposit

The Windfall Lake gold deposit is located between Val-d’Or and Chibougamau in the Abitibi region of Québec, Canada. The mineral resource defined by Osisko, as disclosed in a press release disseminated by the Corporation on May 14, 2018, comprises 2,382,000 tonnes at 7.85 g/t Au (601,000 ounces) in the indicated mineral resource category and 10,605,000 tonnes at 6.70 g/t Au (2,284,000 ounces) in the inferred mineral resource category (see press release entitled “Osisko Releases Its First Mineral Resource Estimate for Windfall Gold Deposit” dated May 14, 2018, which is available on Osisko’s website at www.osiskomining.com and on SEDAR under Osisko’s issuer profile at www.sedar.com). The Windfall Lake gold deposit is currently one of the highest grade resource-stage gold projects in Canada. Mineralization occurs in four principal zones: Lynx, Zone 27, Caribou, and Underdog. All zones comprise sub-vertical lenses following intrusive porphyry contacts plunging to the northeast. The deposit is well defined from surface to a depth of 900 metres and remains open along strike and at depth. Mineralization has been identified only 30 metres from surface in some areas and as deep as 1,200 metres in others, with significant potential to extend mineralization down-plunge and at depth.

About Osisko Mining Inc.

Cautionary Note Regarding Forward-Looking Information

This news release contains “forward-looking information” within the meaning of the applicable Canadian securities legislation that is based on expectations, estimates, projections and interpretations as at the date of this news release. The information in this news release about the Windfall Lake gold deposit being one of the highest grade resource-stage gold projects in Canada; the current 800,000 metre drill program; the significance of the mineral resource estimate published by the Corporation on May 14, 2018 in respect of the Windfall Lake gold deposit; the significance of new results from the ongoing drill program at the Windfall Lake gold project, including in respect of the Lynx deposit; the significance of assay results presented in this press release; the type of drilling included in the drill program (definition, expansion and exploration drilling in and around the main Windfall Lake gold deposit and the adjacent Lynx deposit, and exploration drilling on the greater deposit and Urban-Barry project area); potential mineralization; the potential to extend mineralization up and down-plunge and at depth at the Windfall Lake gold deposit; the ability to realize upon any mineralization in a manner that is economic; the ability to complete any proposed exploration activities and the results of such activities, including the continuity or extension of any mineralization; and any other information herein that is not a historical fact may be “forward-looking information”. Any statement that involves discussions with respect to predictions, expectations, interpretations, beliefs, plans, projections, objectives, assumptions, future events or performance (often but not always using phrases such as “expects”, or “does not expect”, “is expected”, “interpreted”, “management’s view”, “anticipates” or “does not anticipate”, “plans”, “budget”, “scheduled”, “forecasts”, “estimates”, “believes” or “intends” or variations of such words and phrases or stating that certain actions, events or results “may” or “could”, “would”, “might” or “will” be taken to occur or be achieved) are not statements of historical fact and may be forward-looking information and are intended to identify forward-looking information. This forward-looking information is based on reasonable assumptions and estimates of management of the Corporation. at the time it was made, involves known and unknown risks, uncertainties and other factors which may cause the actual results, performance or achievements of Osisko to be materially different from any future results, performance or achievements expressed or implied by such forward-looking information. Such factors include, among others, risks relating to the ability of exploration activities (including drill results) to accurately predict mineralization; errors in management’s geological modelling; the ability of Osisko to complete further exploration activities, including drilling; property interests in the Windfall Lake gold project; the ability of the Corporation to obtain required approvals and complete transactions on terms announced; the results of exploration activities; risks relating to mining activities; the global economic climate; metal prices; dilution; environmental risks; and community and non-governmental actions. Although the forward-looking information contained in this news release is based upon what management believes, or believed at the time, to be reasonable assumptions. Osisko cannot assure shareholders and prospective purchasers of securities of the Corporation that actual results will be consistent with such forward-looking information, as there may be other factors that cause results not to be as anticipated, estimated or intended, and neither Osisko nor any other person assumes responsibility for the accuracy and completeness of any such forward-looking information, Osisko does not undertake, and assumes no obligation, to update or revise any such forward-looking statements or forward-looking information contained herein to reflect new events or circumstances, except as may be required by law.

For further information please contact:

John Burzynski. President and Chief Executive Officer

Telephone: (416) 363-8653

OSISKO INTERSECTS 97.6 g/t Au OVER 3.3 METRES AT LYNX

Posted on June 7, 2018November 8, 2023 by Yannick Fradette

Infill Drilling Continues to Encounter High-Grade Gold

(Toronto, June 7, 2018) Osisko Mining Inc. (OSK:TSX. “Osisko” or the “Corporation”) is pleased to provide new results from the ongoing drill program at its 100% owned Windfall Lake gold project located in the Abitibi greenstone belt, Urban Township, Eeyou Istchee James Bay, Québec. The 800,000 metre drill program commenced in late 2015 is now focussed on infill drilling within the main Windfall gold deposit and the adjacent Lynx deposit (located immediately NE of Windfall). Exploration and expansion drilling is also continuing at Windfall with several deep holes in progress to investigate the down-plunge areas in and around the Underdog and Lynx zones.

Today’s results include significant new analytical results from 49 intercepts in 28 drill holes and 2 wedges focused on infill drilling in the Lynx deposit.

Highlights from the new results include: 97.6 g/t Au over 3.3 metres in OSK-W-18-1511; 79.1 g/t Au over 2.7 metres in OSK-W-18-909-W5; 74.3g/t Au over 2.6 metres in OSK-W-18-1536; 64.2 g/t Au over 3.0 metres in OSK-W-18-1470; 42.8 g/t Au over 2.3 metres in OSK-W-17-1098; 20.1 g/t Au over 3.7 metres in OSK-W-18-1477; and 14.5 g/t Au over 4.7 metres in OSK-W-18-1496. Maps showing hole locations and full analytical results are available at www.osiskomining.com.

Hole No.	From (m)	To (m)	Interval (m)	Au (g/t) uncut	Au (g/t) cut to 100 g/t	Mineralized Area
OSK-W-17-979	304.0	306.0	2.0	17.0		Lynx
including	305.2	306.0	0.8	38.5		Lynx
	312.0	314.2	2.2	3.22		Lynx
including	312.0	312.4	0.4	14.8		Lynx
OSK-W-17-1098	338.3	340.6	2.3	42.8	25.0	Lynx
including	340.1	340.6	0.5	182	100	Lynx
OSK-W-18-909-W5	956.3	959.0	2.7	79.1	52.6	Lynx
including	956.9	957.3	0.4	182	100
and	957.6	958.1	0.5	178	100
OSK-W-18-923-W2	1134.3	1136.5	2.2	6.80		Lynx
including	1135.0	1136.0	1.0	12.3		Lynx
OSK-W-18-1424	666.3	668.5	2.2	7.58
OSK-W-18-1432	945.0	947.0	2.0	8.94		Lynx
including	946.0	947.0	1.0	17.4		Lynx
OSK-W-18-1436	1026.7	1029.2	2.5	10.1		Lynx
OSK-W-18-1450	535.0	537.0	2.0	13.4		Lynx
including	536.5	537.0	0.5	51.6		Lynx
OSK-W-18-1462	141.3	144.0	2.7	3.77		Lynx
including	142.2	142.6	0.4	19.3		Lynx
OSK-W-18-1464	208.8	211.0	2.2	4.75		Lynx
	260.0	262.9	2.9	3.84		Lynx
	273.0	275.7	2.7	8.07		Lynx
including	273.8	274.3	0.5	35.7		Lynx
	406.8	409.7	2.9	3.80		VNCR
OSK-W-18-1470	149.2	152.3	3.1	14.5		Lynx
including	150.4	151.2	0.8	44.9		Lynx
	184.0	186.0	2.0	28.4		Lynx
including	184.0	185.0	1.0	56.7		Lynx
	203.9	206.0	2.1	5.43		Lynx
including	203.9	204.2	0.3	33.5		Lynx
	235.6	238.6	3.0	64.2	37.4	Lynx
including	236.0	236.7	0.7	215	100	Lynx
OSK-W-18-1477	549.1	552.8	3.7	20.1		Lynx
including	550.1	551.0	0.9	63.9		Lynx
OSK-W-18-1483	100.0	102.0	2.0	3.31		Lynx
including	101.2	101.5	0.3	21.7		Lynx
OSK-W-18-1486	301.6	304.0	2.4	3.60		Lynx
including	301.6	302.5	0.9	9.14		Lynx
OSK-W-18-1492	337.3	339.5	2.2	10.1		VNCR
including	338.7	339.5	0.8	26.3		VNCR
	402.6	405.0	2.4	3.82		VNCR
OSK-W-18-1495	365.0	367.0	2.0	7.54		Lynx
including	365.5	366.4	0.9	15.8		Lynx
OSK-W-18-1496	390.1	394.8	4.7	14.5		Lynx
including	392.3	392.8	0.5	91.9		Lynx
OSK-W-18-1501	237.8	240.0	2.2	20.8		Lynx
including	239.1	240.0	0.9	49.0		Lynx
	246.5	248.5	2.0	3.67		Lynx
OSK-W-18-1503	455.0	457.0	2.0	3.75		Lynx
OSK-W-18-1511	246.5	249.8	3.3	97.6	46.5	Lynx
including	247.9	248.6	0.7	341	100	Lynx
OSK-W-18-1512	223.0	225.0	2.0	3.38		Lynx
including	223.0	223.6	0.6	10.8		Lynx
	268.0	270.4	2.4	10.2		Lynx
including	268.0	268.5	0.5	33.0		Lynx
	286.0	288.0	2.0	8.66		Lynx
including	287.0	287.4	0.4	41.4		Lynx
	422.2	425.0	2.8	18.9		VNCR
OSK-W-18-1521	45.0	47.0	2.0	10.0		Lynx
including	45.6	46.1	0.5	37.9		Lynx
OSK-W-18-1523	80.7	86.5	5.8	8.24		Lynx
including	82.5	82.8	0.3	78.3		Lynx
OSK-W-18-1527	93.0	95.0	2.0	4.29		Lynx
including	93.9	94.2	0.3	16.7		Lynx
	133.5	138.0	4.5	12.5	10.5	Lynx
including	134.7	135.0	0.3	130	100	Lynx
OSK-W-18-1529	395.8	399.3	3.5	7.16		VNCR
including	395.8	396.3	0.5	37.8
and	398.9	399.3	0.4	13.7
OSK-W-18-1533	57.6	60.0	2.4	8.69		Lynx
including	58.8	59.1	0.3	67.3		Lynx
OSK-W-18-1536	222.7	224.8	2.1	3.45		Lynx
	228.8	231.4	2.6	74.3	24.5	Lynx
including	229.6	230.2	0.6	316	100	Lynx
	269.0	271.2	2.2	5.07		Lynx
including	270.0	270.3	0.3	33.8		Lynx
	279.2	281.7	2.5	3.39		Lynx
	291.9	294.9	3.0	6.51		Lynx
	301.9	303.9	2.0	3.43		Lynx
	309.4	312.2	2.8	3.59		Lynx
OSK-W-18-1539	460.0	462.0	2.0	3.75		Lynx
including	460.4	460.8	0.4	17.0		Lynx
OSK-W-18-1540	398.0	401.3	3.3	6.43		VNCR
including	399.9	401.0	1.1	18.1		VNCR
OSK-W-18-1550	583.4	585.4	2.0	10.3		Lynx
including	584.5	585.0	0.5	30.1		Lynx

Notes: True widths are estimated at 65 – 80% of the reported core length interval. See “Quality Control and Reporting Protocols” below.

Definition: VNCR = Crustiform Vein.

Hole Number	Azimuth (°)	Dip (°)	Length (m)	UTM E	UTM N	Section
OSK-W-17-979	339	-69	425	453429	5434951	3550
OSK-W-17-1098	129	-48	425	453255	5435289	3575
OSK-W-18-909-W5	131	-55	1057	453683	5435677	4150
OSK-W-18-923-W2	137	-56	1164	453607	5435603	4025
OSK-W-18-1424	357	-57	930	453357	5434365	3200
OSK-W-18-1432	132	-55	1101	453809	5435783	4300
OSK-W-18-1436	139	-52	1128	453372	5435509	3775
OSK-W-18-1450	135	-53	660	453384	5435519	3800
OSK-W-18-1462	331	-47	225	453325	5434948	3475
OSK-W-18-1464	334	-72	432	453465	5435044	3625
OSK-W-18-1470	331	-57	324	453326	5434948	3475
OSK-W-18-1477	135	-50	612	453260	5435471	3675
OSK-W-18-1483	143	-54	177	452777	5434889	2950
OSK-W-18-1486	331	-53	366	453283	5434875	3400
OSK-W-18-1492	333	-58	420	453437	5434906	3550
OSK-W-18-1495	336	-67	381	453454	5434965	3575
OSK-W-18-1496	143	-51	456	453316	5435371	3675
OSK-W-18-1501	140	-51	291	452919	5435023	3150
OSK-W-18-1503	132	-46	543	453427	5435420	3775
OSK-W-18-1511	335	-58	357	453345	5434954	3475
OSK-W-18-1512	332	-55	450	453412	5434904	3525
OSK-W-18-1521	333	-45	69	453199	5435013	3400
OSK-W-18-1523	328	-45	156	453243	5434951	3400
OSK-W-18-1527	334	-46	159	453259	5434954	3400
OSK-W-18-1529	334	-69	444	453458	5435016	3600
OSK-W-18-1533	329	-47	126	453268	5435024	3450
OSK-W-18-1536	337	65	408	453427	5434976	3575
OSK-W-18-1539	145	-52	536	453372	5435450	3750
OSK-W-18-1540	334	-57	441	453349	5434894	3450
OSK-W-18-1550	140	-52	606	453373	5435484	3775

OSK-W-17-979 intersected 17.0 g/t Au over 2.0 metres and 3.22 g/t Au over 2.2 metres. Mineralization contains trace disseminated and stringer pyrite hosted in a moderate sericite and weak silica altered rhyolite and porphyritic felsic dike.

OSK-W-17-1098 intersected 42.8 g/t Au over 2.3 metres. Mineralization contains up to 7% pyrite-tourmaline stringers and trace pyrite clusters in a locally silicified and sericitized gabbro near the contact with fragmental felsic dike.

OSK-W-18-909-W5 intersected 79.1 g/t Au over 2.7 metres. Mineralization contains up to 10% pyrite stringers, clusters and interstitial dissemination and 1% chalcopyrite in pervasive silica flooding. The host is a moderately sericitized and strongly silicified rhyolite.

OSK-W-18-923-W2 intersected 6.80 g/t Au over 2.2 metres. Mineralization contains 1% disseminated pyrite and 1% pyrite clusters with 30% quartz veins within a moderately sericitized and locally silicified rhyolite.

OSK-W-18-1424 intersected 7.58 g/t Au over 2.2 metres. Mineralization contains 3% disseminated pyrite within a sheared, sericitized, chloritized and silicified andesite 50 metres from the Bank Fault.

OSK-W-18-1432 intersected 8.94 g/t Au over 2.0 metres. Mineralization contains 2% disseminated pyrite and clusters within a moderate sericite and weak silica altered porphyritic felsic dike.

OSK-W-18-1436 intersected 10.1 g/t Au over 2.5 metres. Mineralization contains 1% disseminated pyrite and 2% pyrite-tourmaline stringers in a moderate chlorite and weak silica altered andesite.

OSK-W-18-1450 intersected 13.4 g/t Au over 2.0 metres. Mineralization contains 1% pyrite clusters and trace pyrite-tourmaline stringers in a small gabbroic dike with slight sericite and fuchsite alteration hosted in a rhyolite.

OSK-W-18-1462 intersected 3.77 g/t Au over 2.7 metres. Mineralization contains up to 15% pyrite with pervasive silica flooding within a sericitized and silicified rhyolite.

OSK-W-18-1464 intersected 4.75 g/t Au over 2.2 metres, 3.84 g/t Au over 2.9 metres, 8.07 g/t Au over 2.7 metres in Lynx and 3.80 g/t Au over 2.9 metres related to a crustiform vein. The first interval contains 5% pyrite clusters, 2% disseminated pyrite and trace pyrite stringers in a strongly sericitized and moderately chloritized rhyolite. The second interval contains 2% pyrite fragments and trace pyrite stringers in a strongly sericitized fragmental felsic dike. The third interval contains 5% disseminated pyrite and stringers with pervasive silica flooding hosted in a silicified fragmental dike. The last interval contains up to 5% disseminated pyrite and clusters, 5% pyrite-tourmaline stringers with a metre-scale crustiform and brecciated quartz-carbonate-fuchsite vein, hosted in a strongly carbonated and chloritized gabbro.

OSK-W-18-1470 intersected 14.5 g/t Au over 3.1 metres, 28.4 g/t Au over 2.0 metres, 5.43 g/t Au over 2.1 metres, and 64.2 g/t Au over 3.0 metres. The first interval contains 10% pyrite with pervasive silica flooding hosted in a rhyolite with weak fuschite alteration. The second interval contains 3% pyrite stringers with pervasive silica flooding and 1% pyrite fragments with a fragmental felsic dike. The third interval contains 10% pyrite with pervasive silica flooding in fragmental intrusive unit. The fourth interval contains 2% pyrite in pervasive silica flooding and local visible gold hosted in a rhyolite in contact with a felsic intrusion.

OSK-W-18-1477 intersected 20.1 g/t Au over 3.70 metres. The interval is composed of a moderately sericitized, silicified and fuchsitized gabbro injected by 40% crustiform dismembered quartz-carbonates-tourmaline veins with 5% pyrite.

OSK-W-18-1483 intersected 3.31 g/t Au over 2.0 metres. Mineralization contains up to 2% pyrite with pervasive silica flooding and trace pyrite in quartz-tourmaline veins at a sericitized and weakly fuchsitized contact between a gabbro and a porphyritic felsic dike.

OSK-W-18-1486 intersected 3.60 g/t Au over 2.4 metres. Mineralization contains trace disseminated pyrite in a weakly sericitized and silicified rhyolite.

OSK-W-18-1492 intersected 10.1 g/t Au over 2.2 metres and 3.82 g/t Au over 2.4 metres related to crustiform veins. Mineralization contains up to 2% pyrite in crustiform quartz-carbonate veins with local pervasive silica flooding, traces of pyrite within quartz-tourmaline veins and trace pyrite clusters. The host is a weakly fuchsitized and moderately chloritized andesite.

OSK-W-18-1495 intersected 7.54 g/t Au over 2.0 metres. Mineralization is composed of 3% pyrite stringers in a one metre-scale quartz-tourmaline vein hosted in a massive gabbro.

OSK-W-18-1496 intersected 14.5 g/t Au over 4.7 metres. Mineralization is composed of up 6% pyrite stringers with pervasive silica flooding hosted at the contact between a felsic fragmental dike and a rhyolite.

OSK-W-18-1501 intersected 20.8 g/t Au over 2.2 metres and 3.67 g/t Au over 2.0 metres. The first interval contains up to 6% disseminated pyrite and stringer with pervasive silica flooding within a sericitized and silicified porphyritic felsic dike. The second interval contains 8% disseminated pyrite at the contacts with quartz-carbonate veinlets with weak pervasive silica flooding in a bleached and strongly sericitized basalt.

OSK-W-18-1503 intersected 3.75 g/t Au over 2.0 metres. Mineralization contains 1% disseminated pyrite in a moderately sericitized rhyolite.

OSK-W-18-1511 intersected 97.6 g/t Au over 3.3 metres. Mineralization contains up to 1% pyrite stringers, 10% pyrite in pervasive silica flooding and local visible gold hosted in a silica and fuchsite altered fragmental rhyolite.

OSK-W-18-1512 intersected 3.38 g/t Au over 2.0 metres, 10.2 g/t Au over 2.4 metres, and 8.66 g/t Au over 2.0 metres in Lynx and 18.9 g/t Au over 2.8 metres related to a crustiform vein. The first interval contains 1% pyrite stringers and trace disseminated pyrite at a contact between a sericitized and silicified rhyolite and a foliated and chloritized gabbro. The second interval contains traces of disseminated pyrite in quartz clusters within a sericitized and bleached porphyritic felsic dike. The third interval contains up to 10% pyrite in pervasive silica flooding and folded quartz-carbonate veinlets hosted in a sericitized, silicified and bleached rhyolite. The fourth interval contains 10% disseminated and interstitial pyrite associated with crustiform veins hosted in a moderately sericitized, bleached, and fuchsite-altered gabbro.

OSK-W-18-1521 intersected 10.0 g/t Au over 2.0 metres. Mineralization contains up to 2% pyrite-tourmaline stringers with local visible gold within a silicified and sericitized fragmental felsic dike.

OSK-W-18-1523 intersected 8.24 g/t Au over 5.8 metres. Mineralization contains local visible gold in a dismembered quartz-carbonate vein and in crustiform veins, 3% disseminated and stringer pyrite, and 1% pyrite clusters hosted in a sericitized and locally chloritized andesite rhyolite.

OSK-W-18-1527 intersected 4.29 g/t Au over 2.0 metres and 12.5 g/t Au over 4.5 metres. The first interval contains up to 2% pyrite stringers and 2% disseminated pyrite in crustiform veins hosted at the contact between a bleached sericitized and silicified rhyolite and a bleached sericitized andesite. The second interval contains 5% pyrite and 2% sphalerite with pervasive silica flooding in a silicified and sericitized fragmental felsic dike with weak fuchsite alteration.

OSK-W-18-1529 intersected 7.16 g/t Au over 3.5 metres. Mineralization is related to quartz-carbonate-crustiform veins composed of 1% disseminated and stringer pyrite with silica-tourmaline-carbonate veins hosted in a chloritized gabbro.

OSK-W-18-1533 intersected 8.69 g/t Au over 2.4 metres. Mineralization contains local visible gold, 3% pyrite tourmaline stringers in crustiform veins, and 3% disseminated and stringer pyrite within a bleached and sericitized andesite.

OSK-W-18-1536 intersected 3.45 g/t Au over 2.1 metres, 74.3 g/t Au over 2.6 metres, 5.07 g/t Au over 2.2 metres, 3.39 g/t Au over 2.5 metres, 6.51 g/t Au over 3.0 metres, 3.43 g/t Au over 2.0 metres, and 3.59 g/t Au over 2.8 metres. The first interval contains trace disseminated pyrite, 3% pyrite-tourmaline stringers and quartz tourmaline veins in a sericitized rhyolite. The second, third and fourth intervals contain 5% disseminated pyrite and stringers at a contact between a sericitized and chloritized rhyolite with weak fuchsite alteration and a sericitized porphyritic felsic dike. The fifth interval is composed of trace disseminated pyrite in a sericitized rhyolite. The sixth interval is composed of 3% disseminated pyrite within a sericitized, silicified rhyolite near a contact with a gabbroic unit.

OSK-W-18-1539 intersected 3.75 g/t Au over 2.0 metres. Mineralization contains traces of disseminated pyrite and pyrite-tourmaline stringers in pervasive silica flooding within a sericitized and silicified rhyolite.

OSK-W-18-1540 intersected 6.43 g/t Au over 3.3 metres related to a crustiform vein. Mineralization contains up to 1% pyrite clusters and 3% pyrite stringers hosted in a moderately fuchsite altered gabbro with patchy silicification.

OSK-W-18-1550 intersected 10.3 g/t Au over 2.0 metres. Mineralization contains up to 6% disseminated and clustered pyrite hosted in a bleached gabbro injected by quartz-carbonate and quartz-tourmaline veins.

Qualified Person

Quality Control and Reporting Protocols

About the Windfall Lake Gold Deposit

About Osisko Mining Inc.

Cautionary Note Regarding Forward-Looking Information

This news release contains “forward-looking information” within the meaning of the applicable Canadian securities legislation that is based on expectations, estimates, projections and interpretations as at the date of this news release. The information in this news release about the Windfall Lake gold deposit being one of the highest grade resource-stage gold projects in Canada; the current 800,000 metre drill program; the significance of the mineral resource estimate published by the Corporation on May 14, 2018 in respect of the Windfall Lake gold deposit; the significance of new results from the ongoing drill program at the Windfall Lake gold project, including in respect of the Lynx deposit; the significance of assay results presented in this press release; the type of drilling included in the drill program (definition, expansion and exploration drilling in and around the main Windfall Lake gold deposit and the adjacent Lynx deposit, and exploration drilling on the greater deposit and Urban-Barry project area); potential mineralization; the potential to extend mineralization up and down-plunge and at depth at the Windfall Lake gold deposit; the ability to realize upon any mineralization in a manner that is economic; the ability to complete any proposed exploration activities and the results of such activities, including the continuity or extension of any mineralization; and any other information herein that is not a historical fact may be “forward-looking information”. Any statement that involves discussions with respect to predictions, expectations, interpretations, beliefs, plans, projections, objectives, assumptions, future events or performance (often but not always using phrases such as “expects”, or “does not expect”, “is expected”, “interpreted”, “management’s view”, “anticipates” or “does not anticipate”, “plans”, “budget”, “scheduled”, “forecasts”, “estimates”, “believes” or “intends” or variations of such words and phrases or stating that certain actions, events or results “may” or “could”, “would”, “might” or “will” be taken to occur or be achieved) are not statements of historical fact and may be forward-looking information and are intended to identify forward-looking information. This forward-looking information is based on reasonable assumptions and estimates of management of the Corporation. at the time it was made, involves known and unknown risks, uncertainties and other factors which may cause the actual results, performance or achievements of Osisko to be materially different from any future results, performance or achievements expressed or implied by such forward-looking information. Such factors include, among others, risks relating to the ability of exploration activities (including drill results) to accurately predict mineralization; errors in management’s geological modelling; the ability of Osisko to complete further exploration activities, including drilling; property interests in the Windfall Lake gold project; the ability of the Corporation to obtain required approvals and complete transactions on terms announced; the results of exploration activities; risks relating to mining activities; the global economic climate; metal prices; dilution; environmental risks; and community and non-governmental actions. Although the forward-looking information contained in this news release is based upon what management believes, or believed at the time, to be reasonable assumptions. Osisko cannot assure shareholders and prospective purchasers of securities of the Corporation that actual results will be consistent with such forward-looking information, as there may be other factors that cause results not to be as anticipated, estimated or intended, and neither Osisko nor any other person assumes responsibility for the accuracy and completeness of any such forward-looking information, Osisko does not undertake, and assumes no obligation, to update or revise any such forward-looking statements or forward-looking information contained herein to reflect new events or circumstances, except as may be required by law.

For further information please contact:

John Burzynski. President and Chief Executive Officer

Telephone: (416) 363-8653

OSISKO RELEASES ITS FIRST MINERAL RESOURCE ESTIMATE FOR WINDFALL GOLD DEPOSIT

Posted on May 14, 2018November 8, 2023 by Yannick Fradette

(Toronto, May 14, 2018) Osisko Mining Inc. (OSK:TSX, “Osisko” or the “Corporation”) is pleased to provide a mineral resource estimate for its 100% owned Windfall gold deposit, located in the Abitibi greenstone belt, Urban Township, Eeyou Istchee James Bay, Québec. This mineral estimate is the result of 1,453 drill holes (596,733 metres) in the resource area completed by previous operators on the project since 1997 and includes 812 new drill holes (413,692 metres) completed by Osisko from October 2015 to March 5, 2018. Drilling continues at the Windfall gold deposit, and results disclosed by Osisko since March 5, 2018 (representing 131 drill holes and approximately 40,000 metres of infill and extension holes principally in the Lynx and Underdog zones) are not incorporated in this mineral resource estimate.

Table 1 below outlines the mineral resource estimate for the Windfall gold deposit with grade sensitivity shown in Table 2. Footnotes ⁽¹⁾ and ⁽²⁾ indicate that values are rounded to nearest thousand which may cause apparent discrepancies. In Table 1, the row entitled “Other” is the combined resource of four satellite zones (Mallard, F3, F17 and F51).

Table 1: Windfall Gold Deposit Indicated and Inferred Mineral Resources by Zone (3.0 g/t Au cut-off)

Zone	Indicated			Inferred
Zone	Tonnes (000 t) ⁽¹⁾	Grade (g/t)	Ounces Au ⁽²⁾ (000 oz)	Tonnes ⁽¹⁾ (000 t)	Grade (g/t)	Ounces Au ⁽²⁾ (000 oz)
Lynx	1,254	7.51	303	2,257	7.48	543
Zone 27	628	8.69	175	852	7.28	199
Caribou	318	7.12	73	2,767	5.80	516
Underdog	147	9.00	43	4,380	6.77	953
Other	34	6.58	7	348	6.37	71
Total	2,382	7.85	601	10,605	6.70	2,284

Table 2: Windfall Gold Deposit Indicated and Inferred Mineral Resource Sensitivity Table

Cut-off Grade	Indicated			Inferred
Cut-off Grade	Tonnes ⁽¹⁾ (000 t)	Grade (g/t)	Ounces Au ⁽²⁾ (000 oz)	Tonnes ⁽¹⁾ (000 t)	Grade (g/t)	Ounces Au ⁽²⁾ (000 oz)
5.00 g/t	1,476	10.28	487	5,764	9.06	1,679
4.00 g/t	1,858	9.08	543	7,749	7.88	1,964
3.50 g/t	2,093	8.48	571	9,091	7.27	2,126
3.00 g/t	2,382	7.85	601	10,605	6.70	2,284
2.50 g/t	2,741	7.18	633	12,434	6.12	2,445

John Burzynski, President and Chief Executive Officer of Osisko, commented: “We are very pleased with our initial mineral resource estimate. We have a solid understanding of the Windfall gold-bearing intrusive-related system, which remains open along strike to the northeast and at depth. The Lynx and Underdog zones in particular have excellent down plunge potential for additional mineral resources. We are continuing our 800,000 metre drill program to expand and explore the deposit. Of importance is the infill drilling to convert Inferred resource to Indicated resource has produced higher average grades and is a focus of our ongoing program. Today’s mineral resource estimate is a great start to defining the larger Windfall system, and it is complemented by our recently announced Osborne-Bell mineral resource estimate. Our plan is to incorporate Windfall gold deposit and Osborne-Bell into a single PEA, scheduled for early Q3 2018, which will model a blended mining scenario with processing at a central Lebel-sur-Quévillon mill site. We are confident that Windfall will grow further as we continue drilling and as the exploration ramp drives forward.”

The mineral resource estimate has been prepared by InnovExplo from Val-d’Or, Québec, and has been reviewed internally by the Corporation. The full technical report, which is being prepared in accordance with National Instrument 43-101 (“NI-43-101”), will be available on SEDAR (www.sedar.com) under the Corporation’s issuer profile within 45 days. The effective date of the current mineral resource estimate is May 15, 2018.

This mineral resource estimate reflects geological re-modeling of the Windfall deposit as an intrusive-related system where mineralized zones are closely associated with sub-volcanic quartz-feldspar porphyries that have been precisely dated, along with mineralization, at 2697+/- 2 Ma. Further to the geological re-modeling, the re-evaluation of historical drilling results from previous operators was completed as well as the addition of new drilling information from 812 drill holes performed after the 2015 mineral resource estimate released by the previous owners (see “Preliminary Economic Assessment of the Windfall Lake Gold Property, Québec, Canada” dated June 10, 2015 (effective date April 28, 2015) available on SEDAR (www.sedar.com) under Eagle Hill Exploration Corporation’s issuer profile). The mineral resource estimate reflects grade model changes from a broad mineralized domain approach to better defined, higher grade, vertical sub-domains to capture the nature of the gold bearing zones which follow the intrusive porphyry contacts.

A total of 124 wireframes were constructed for the estimate with a minimum true thickness of 2.0 metres. The estimate only considers mineralized zones potentially minable by underground methods at a lower cut-off grade of 3.0 g/t Au. The cut-off calculation is based on the assumed parameters listed below:

Table 3: Parameters used for Resource Estimate

Parameters	Unit	Value
Gold Price	US$/oz	1,300
Exchange Rate	US$/C$	1.28
Mill Recovery	%	90
Sell Cost	C$/oz	5
Royalties	%	2.5
Mining Cost	C$/T milled	70
G&A Cost	C$/T milled	18
Processing Cost	C$/T milled	30
Transportation	C$/T milled	18
Environment	C$/T milled	3
Calculated Cut-off Grade	Au g/t	2.96

The Windfall mineral resource estimate disclosed above is distinct from the Osborne-Bell mineral resource estimate released March 15, 2018 (see “NI 43-101 Technical Report and Mineral Resource Estimate – Osborne-Bell Deposit, Quévillon Property” dated April 23, 2018 (effective date March 2, 2018) available on SEDAR (www.sedar.com) under the Corporation’s issuer profile). The Osborne-Bell deposit is located on the Quévillon property, 17 kilometres West of Lebel-sur-Quévillon, Québec, and could potentially be mined and processed at the same proposed mill complex that would process Windfall mineralized material. Osborne-Bell has a total inferred mineral resource estimate of 2,587,000 tonnes at an average grade of 6.13 g/t Au for 510,000 ounces of gold, using a 3.0 g/t lower cut-off grade (see Table 4 below).

Table 4: Osborne-Bell Deposit – Inferred Mineral Resource Sensitivity Table

	Inferred
Cut-off Grade	Tonnes ⁽¹⁾ (000 t)	Grade (g/t)	Ounces Au ⁽²⁾ (000 oz)
> 5.00 g/t	1,273	8.44	346
> 4.00 g/t	1,816	7.26	424
> 3.50 g/t	2,156	6.70	465
> 3.00 g/t	2,587	6.13	510
> 2.50 g/t	3,166	5.51	560

Osisko’s current mineral resource estimate at Windfall and Osborne-Bell is described below in Table 5.

Table 5: Windfall – Osborne-Bell Mineral Resource Estimate (3.0 g/t Au cut-off) ^(†)

	Indicated			Inferred
	Tonnes⁽¹⁾ (000 t)	Grade (g/t)	Ounces Au ⁽²⁾ (000 oz)	Tonnes ⁽¹⁾ (000 t)	Grade (g/t)	Ounces Au ⁽²⁾ (000 oz)
Windfall	2,382	7.85	601	10,605	6.70	2,284
Osborne-Bell	–	–	–	2,587	6.13	510
Total	2,382	7.85	601	13,192	6.59	2,793

Note: ^(†) See “Cautionary Statement Regarding Estimates of Mineral Resources”.

Further details regarding the 2018 mineral resource estimate, key assumptions, parameters and methods used to estimate the mineral resources of the Windfall Gold Deposit will be available on SEDAR (www.sedar.com) under the Corporation’s issuer profile within 45 days. For further details about the 2015 resource estimate for the Windfall Lake gold project, please see “Preliminary Economic Assessment of the Windfall Lake Gold Property, Québec, Canada” dated June 10, 2015 (effective date April 28, 2015) available on SEDAR (www.sedar.com) under Eagle Hill Exploration Corporation’s issuer profile. For further details about the Osborne-Bell mineral resource estimate released March 15, 2018, please see “NI 43-101 Technical Report and Mineral Resource Estimate – Osborne-Bell Deposit, Quévillon Property” dated April 23, 2018 (effective date March 2, 2018) available on SEDAR (www.sedar.com) under the Corporation’s issuer profile.

Windfall Gold Deposit Mineral Resource Estimate Notes:

The Windfall mineral resource estimate is compliant with CIM standards and guidelines for reporting mineral resources and reserves.
Resources are presented undiluted and in situ and are considered to have reasonable prospects for economic extraction.
The database comprised a total of 1,453 drill holes for 596,732.7 metres of drilling in the extent of the mineral resource, of which 812 drill holes (413,692 metres) were completed and assayed by Osisko as of March 5, 2018, on approximate grid of 25 metre x 25 metre (infill drilling) and larger grid for extension drilling.
All NQ core assays reported by Osisko were obtained by analytical methods described below under “Quality Control and Reporting Protocols”.
Geological interpretation of the deposits was based on lithologies, mineralized shears and the observation that most mineralized domains occur at the contact of porphyry dykes and volcanic host rocks. Interpretation was initially made from cross-sections at 50 metre intervals, and then completed in Leapfrog, a modelling software, where selections of mineralization intervals were combined to generate mineralization wireframes. Domains are subvertical, strike NE-SW and plunge approximately 30 degrees towards the North-East.
The mineral resource estimate encompasses a total of 124 tabular, sub-vertical gold-bearing domains each defined by individual wireframes with a minimum true thickness of 2.0 metres.
Samples were composited within the mineralization domains into 2.0 metre length composites. A value of zero grade was applied in cases of core not assayed.
High grade capping was done on composite data, and established using a statistical analysis on a per-zone basis for gold. Capping varied from 15 g/t Au to 75 g/t Au and was applied using a four-step capping strategy where capping values decreased as interpolation distances increased.
Density values were applied on the following lithological basis (t/m3): mafic volcanic host rocks varied from 2.78 to 2.86; felsic volcanic host rocks varied from 2.76 to 2.77; porphyries varied from 2.70 to 2.83.
Ordinary Kriging (OK) based interpolation was used for the estimation of all zones of the Windfall gold deposit except for the Underdog zone where an Inverse Distance Squared (ID2) interpolation was preferred due to the larger drill spacing and smaller density of drill holes informing the mineralization wireframes. All estimates are based on a block dimension of 5 metres NE, 2 metres NW and 5 metres height and estimation parameters determined by variography.
The Windfall mineral resource estimate is categorized as Indicated and Inferred mineral resource as follows:
- The Indicated mineral resource category is manually defined and encloses areas where drill spacing is generally less than 25 metres, blocks are informed by a minimum of three drill holes, and reasonable geological and grade continuity is shown.
- The Inferred mineral resource category is manually defined and encloses areas where drill spacing is less than 100 metres, blocks are informed by a minimum of two drill holes, and reasonable, but not verified, geological and grade continuity is observed.
Estimates use metric units (metres, tonnes and g/t). Metal contents are presented in troy ounces (metric tonne x grade / 31.10348).
InnovExplo is not aware of any known environmental, permitting, legal, title-related, taxation, socio-political or marketing issues, or any other relevant issue not reported in the technical report, that could materially affect the mineral resource estimate.
These mineral resources are not mineral reserves as they do not have demonstrated economic viability. The quantity and grade of reported Inferred resources in this Mineral Resource Estimate are uncertain in nature and there has been insufficient exploration to define these Inferred resources as Indicated or Measured, and it is uncertain if further exploration will result in upgrading them to these categories.

Qualified Person

The Windfall gold deposit mineral resource estimate, with an effective date of May 15, 2018, was prepared by Judith St-Laurent, P.Geo (OGQ #1023)., B.Sc., who is a “qualified person” within the meaning of NI 43-101. Ms. St-Laurent is an employee of InnovExplo and is considered to be “independent” of Osisko for purposes of section 1.5 of NI 43-101.

The scientific and technical content in this press release has been reviewed and approved by Mr. Mathieu Savard, P.Geo (OGQ #510), Vice President Exploration (Québec) of Osisko, who is a “qualified person” within the meaning of NI 43-101.

Quality Control and Reporting Protocols

About Osisko Mining Inc.

Osisko is a mineral exploration company focused on the acquisition, exploration, and development of precious metal resource properties in Canada. Osisko holds a 100% in the high-grade Windfall Lake gold deposit located between Val-d’Or and Chibougamau in Québec and holds a 100% undivided interest in a large area of claims in the surrounding Urban Barry area and nearby Quévillon area (over 3,300 square kilometres), a 100% interest in the Marban project located in the heart of Québec’s prolific Abitibi gold mining district, and properties in the Larder Lake Mining Division in northeast Ontario, including the Jonpol and Garrcon deposits on the Garrison property, the Buffonta past producing mine and the Gold Pike mine property. The Corporation also holds interests and options in a number of additional properties in northern Quebec and Ontario. Osisko continues to be well financed with approximately $150 million in cash and investments as of the end of Q1 2018.

Cautionary Statements Regarding Estimates of Mineral Resources

This news release uses the terms measured, indicated and inferred resources as a relative measure of the level of confidence in the resource estimate. Readers are cautioned that mineral resources are not economic mineral reserves and that the economic viability of resources that are not mineral reserves has not been demonstrated. The estimate of mineral resources may be materially affected by geology, environmental, permitting, legal, title, socio-political, marketing or other relevant issues. It cannot be assumed that all or any part of an inferred mineral resource will ever be upgraded to an indicated or measured mineral resource category. The mineral resource estimate is classified in accordance with the Canadian Institute of Mining, Metallurgy and Petroleum’s “CIM Definition Standards on Mineral Resources and Mineral Reserves” incorporated by reference into NI 43-101. Under Canadian rules, estimates of inferred mineral resources may not form the basis of feasibility or pre-feasibility studies or economic studies except for Preliminary Assessment as defined under NI 43-101. Readers are cautioned not to assume that further work on the stated resources will lead to mineral reserves that can be mined economically.

Cautionary Note Regarding Forward-Looking Information

This news release contains “forward-looking information” within the meaning of the applicable Canadian securities legislation that is based on expectations, estimates, projections and interpretations as at the date of this news release. Any statement that involves predictions, expectations, interpretations, beliefs, plans, projections, objectives, assumptions, future events or performance (often, but not always, using phrases such as “expects”, or “does not expect”, “is expected”, “interpreted”, “management’s view”, “anticipates” or “does not anticipate”, “plans”, “budget”, “scheduled”, “forecasts”, “estimates”, “believes” or “intends” or variations of such words and phrases or stating that certain actions, events or results “may” or “could”, “would”, “might” or “will” be taken to occur or be achieved) are not statements of historical fact and may be forward-looking information and are intended to identify forward-looking information. This news release contains the forward-looking information pertaining to, among other things, the timing and ability of Osisko to file a technical report in respect of this mineral resource estimate; the prospects, if any, of the Windfall Lake gold deposit and the Osborne-Bell gold deposit; the potential future mill site for the Windfall Lake gold deposit; the timing and ability of Osisko, if at all, to publish a PEA for Windfall-Lynx and Osborne-Bell; the parameters used for this mineral resource estimate; the projected capital expenditures of mining activities at the Windfall Lake gold deposit; upgrading a inferred mineral resource to a measured mineral resource or indicated mineral resource category; the deposit remaining open along strike to the northeast and at depth; future drilling at the Windfall gold deposit; the plunge potential of the Lynx and Underdog zones; progress of the exploration ramp; the significance of historic exploration activities and results. Such factors include, among others, risks relating to the ability of exploration activities (including drill results) to accurately predict mineralization; errors in management’s geological modelling; the ability of Osisko to complete further exploration activities, including drilling; property interests in the Windfall Lake gold deposit; the ability of the Corporation to obtain required approvals and complete transactions on terms announced; the results of exploration activities; risks relating to mining activities; the global economic climate; metal prices; dilution; environmental risks; and community and non-governmental actions. Although the forward-looking information contained in this news release is based upon what management believes, or believed at the time, to be reasonable assumptions, Osisko cannot assure shareholders and prospective purchasers of securities of the Corporation that actual results will be consistent with such forward-looking information, as there may be other factors that cause results not to be as anticipated, estimated or intended, and neither Osisko nor any other person assumes responsibility for the accuracy and completeness of any such forward-looking information. Osisko does not undertake, and assumes no obligation, to update or revise any such forward-looking statements or forward-looking information contained herein to reflect new events or circumstances, except as may be required by law.

CONTACT INFORMATION:

John Burzynski
President & Chief Executive Officer
(416) 363-8653

OSISKO INTERSECTS 34.3 g/t Au OVER 4.5 METRES AT WINDFALL

Posted on May 1, 2018November 8, 2023 by Yannick Fradette

High-Grade Infill Hits in Underdog and Zone 27 Continue

(Toronto, May 1, 2018) Osisko Mining Inc.(OSK:TSX. “Osisko” or the “Corporation”) is pleased to provide new results from the ongoing drill program at its 100% owned Windfall Lake gold project located in the Abitibi greenstone belt, Urban Township, Eeyou Istchee James Bay, Québec. The 800,000 metre drill program combines definition, expansion and exploration drilling in and around the main Windfall gold deposit and the adjacent Lynx deposit (located immediately NE of Windfall).

Significant new analytical results from 24 intercepts in 12 drill holes and 5 wedges focused on infill drilling in the Windfall deposit are presented below. Today’s infill drilling results will not be included in the pending mineral resource scheduled for release in May 2018.

Highlights from the new results include: 34.3 g/t Au over 4.5 metresin OSK-W-17-1172;13.0 g/t Au over 5.7 metresin OSK-W-18-1336-W2; 27.7 g/t Au over 2.1 metresin OSK-W-17-778, 25.5 g/t Au over 2.1 metresin OSK-W-17-1380. Maps showing hole locations and full analytical results are available at www.osiskomining.com.

Hole No.	From (m)	To (m)	Interval (m)	Au (g/t) uncut	Au (g/t) cut to 100 g/t	Zone	Corridor
OSK-EAG-12-427	918.0	920.0	2.0	13.0		Underdog	Underdog
including	918.9	920.0	1.1	23.6		Underdog	Underdog
OSK-EAG-13-513	1050.0	1054.0	4.0	10.6		FW4	Underdog
including	1050.0	1052.0	2.0	18.0		FW4	Underdog
OSK-W-16-762	1253.0	1255.0	2.0	4.66		FW4	Underdog
OSK-W-17-778	917.0	919.2	2.2	11.6		FW0	Underdog
	1095.4	1098.4	3.0	10.6		FW1	Underdog
	1114.6	1117.1	2.5	9.24		FW1	Underdog
	1132.0	1134.1	2.1	27.7	19.1	FW2	Underdog
including	1132.0	1132.4	0.4	145	100	FW2	Underdog
	1158.0	1160.0	2.0	4.49		FW2	Underdog
OSK-W-17-1172	136.5	141.0	4.5	34.3	27.4	Z27	Zone 27
including	136.5	137.0	0.5	44.1
including	140.0	141.0	1.0	131	100
OSK-W-17-1336-W1	723.0	725.0	2.0	9.44		Vein	Red Dog
including	723.7	724.0	0.3	62.8		Vein	Red Dog
OSK-W-18-1336-W2	831.9	835.3	3.4	4.62		FW0	Underdog
	849.7	852.3	2.6	3.53		FW0	Underdog
	950.0	952.3	2.3	3.92		FW1	Underdog
	964.0	969.7	5.7	13.0		FW1	Underdog
including	967.3	967.8	0.5	92.2		FW1	Underdog
OSK-W-17-1380	361.1	363.2	2.1	25.5	25.3	Underdog	Underdog
including	361.9	362.4	0.5	101	100	Underdog	Underdog
OSK-W-17-1394	902.7	904.8	2.1	13.0		Caribou Ext.	Caribou
including	904.0	904.8	0.8	33.0		Caribou Ext.	Caribou
OSK-W-18-1402-W1	683.5	686.0	2.5	3.57		Vein	Red Dog
including	684.5	685.0	0.5	17.6		Vein	Red Dog
OSK-W-18-1418	893.0	896.4	3.4	6.72		QTV	Caribou
including	893.0	893.5	0.5	39.0		QTV	Caribou
OSK-W-18-1423	268.4	271.0	2.6	3.07		Bobcat	Bobcat
OSK-W-18-1431-W1	922.1	924.6	2.5	4.25		FW3	Underdog
OSK-W-18-1431-W2	765.0	767.0	2.0	3.55		FW1	Underdog
OSK-W-18-1435	555.5	558.0	2.5	16.7		Caribou Ext.	Caribou
including	555.5	556.5	1.0	40.7		Caribou Ext.	Caribou
OSK-W-18-1457	52.7	55.0	2.3	10.5		Bobcat	Bobcat
including	54.0	54.3	0.3	66.0		Bobcat	Bobcat
OSK-W-18-1459	256.0	258.0	2.0	9.52		Bobcat	Bobcat
including	257.5	258.0	0.5	36.4		Bobcat	Bobcat

Notes: True widths are estimated at 65 – 80% of the reported core length interval. See “Quality Control”below.

Definitions: Ext. = Extension; FW = Footwall; QTV = Quartz-Tourmaline Vein.

Hole Number	Azimuth (°)	Dip (°)	Length (m)	UTM E	UTM N	Section
OSK-EAG-12-427	330	51	1215	452701	5434438	2675
OSK-EAG-13-513	330	-55	1131	452629	5434514	2650
OSK-W-16-762	332	-56	1311	452730	5434409	2675
OSK-W-17-778	331	-58	1362	452689	5434338	2600
OSK-W-17-1172	144	-49	207	452022	5434797	2250
OSK-W-17-1336-W1	335	-61	1335	452616	5434449	2600
OSK-W-18-1336-W2	335	-61	1193	452616	5434449	2600
OSK-W-17-1380	335	-45	624	451895	5434473	1975
OSK-W-17-1394	335	-49	1165	453146	5434512	3100
OSK-W-18-1402-W1	330	-59	1224	452616	5434449	2600
OSK-W-18-1418	334	-45	1077	453288	5434531	3225
OSK-W-18-1423	327	-61	792	453025	5434853	3150
OSK-W-18-1431-W1	337	-62	1092	452287	5434336	2250
OSK-W-18-1431-W2	337	-62	1140	452287	5434336	2250
OSK-W-18-1435	331	-65	801	453028	5434848	3150
OSK-W-18-1457	137	-57	318	452982	5435148	3275
OSK-W-18-1459	132	-50	621	452860	5435186	3175

OSK-EAG-12-427 intersected 13.0 g/t Au over 2.0 metresin Underdog. Mineralization contains 5% pyrite stringers within an enclave of foliated andesite in a porphyric felsic dike.

OSK-EAG-13-513 intersected FW4 with 10.6 g/t Au over 4.0 metresin Underdog. Mineralization contains up to 5% pyrite stringers and 3% disseminated pyrite within a moderately sericitized felsic dike.

OSK-W-16-762intersected FW4 with 4.66 g/t Au over 2.0 metres in Underdog. Mineralization contains 5% semi-massive pyrite and 2% pyrite stringers within a bleached andesite with moderate silica and sericite alteration.

OSK-W-17-778 intersected five intervals in Underdog: 11.6 g/t Au over 2.2 metresin FW0, 10.6 g/t Au over 3.0 metres and9.24 g/t Au over 2.5 metresin FW1, and 27.7 g/t Au over 2.1 metresand 4.49 g/t Au over 2.0 metresin FW2. The first interval contains local visible gold with 15% pyrite-silica flooding in a sericitized and bleached felsic porphyritic intrusion. The second and third intervals contain up to 5% pyrite and pyrite-tourmaline stringers and up to 12% disseminated and cluster pyrite with patchy silica hosted in a strongly bleached to sericitized and silicified felsic porphyritic dike. The fourth interval is similar to the previous ones and contains local visible gold.

OSK-W-17-1172intersected 34.3 g/t Au over 4.5metresin Zone 27. Mineralization contains up 1% disseminated pyrite, 5% pyrite and pyrite-tourmaline stringers in a moderately silicified porphyritic felsic dike.

OSK-W-17-1336-W1 intersected 9.44 g/t Au over 2.0metresin a vein in the Red Dog intrusive (hematized monzonite). Mineralization contains local visible gold within a centimetre-thick pyrite stringer.

OSK-W-17-1336-W2 intersected four intervals:4.62 g/t Au over 3.4 metresand3.53 g/t Au over 2.6 metresin FW0, 3.92 g/t Au over 2.3 metresand 13.0 g/t Au over 5.7 metres in FW1. The first interval contains local visible gold in a ptygmatic tourmaline vein hosted in a porphyritic felsic dike with up to 3% pyrite-tourmaline stringers and pyrite clusters in pervasive silica flooding. The second interval contains 2 to 5% semi-massive pyrite clusters, 1 to 3% pyrite stringers with smoky quartz-chlorite-tourmaline, local pervasive silica flooding, ptygmatic tourmaline veinlets, 2% semi-massive to massive pyrite associated with mafic fuchsitized fragments and 2% disseminated pyrite all hosted in a sericitized porphyritic felsic unit. The third interval contains up to 15% pyrite-tourmaline stringers hosted in a silicified and sericitized porphyritic felsic dike. The last interval contains local visible gold with up to 20% pyrite-silica flooding and 2% pyrite-tourmaline stringers within a silicified and sericitized felsic dike.

OSK-W-17-1380intersected 25.5 g/t Au over 2.1metresin Underdog. Mineralization contains semi-massive to massive pyrite, up to 7% pyrite-tourmaline and pyrite stringers and 3% disseminated pyrite within a sericitized porphyritic felsic dike. It is located 50 metres west of OSK-EAG-13-505 (8.37 g/t Au over 4.8 metres, previously released January 16, 2018).

OSK-W-17-1394intersected 13.0 g/t Au over 2.1 metresin Caribou Extension. Mineralization contains 1% disseminated pyrite and traces of pyrite stringers within a chloritized andesite with moderate carbonate alteration.

OSK-W-18-1402-W1intersected a mineralized vein in Red Dog intrusion returning 3.57 g/t Au over 2.5 metres. Mineralization is composed of 20-centimetre wide quartz vein with traces of pyrite.

OSK-W-18-1418intersected6.72 g/t Au over 3.4 metres in Caribou. Mineralization contains up to 5% pyrite and quartz-tourmaline veins at the chloritized contact between an andesite and a porphyric felsic dike.

OSK-W-18-1423 intersected3.07 g/t Au over 2.6 metres in Bobcat. Mineralization corresponds with quartz-carbonates veins with 5% pyrite in a moderately sericitized andesite with fuschite and up to 2% disseminated pyrite.

OSK-W-18-1431-W1intersected FW3 with 4.25 g/t Au over 2.5 metresin Underdog. Mineralization is composed of two decimetre-scale pyrite stringers within a sericitized and silicified porphyritic felsic dike.

OSK-W-18-1431-W2intersected FW1 with 3.55 g/t Au over 2.0 metresin Underdog. Mineralization contains up to 5% fragments of pyrite-stringers and 3% disseminated pyrite in a foliated and sericitized porphyritic felsic dike with fuchsite.

OSK-W-18-1435intersected 16.7 g/t Au over 2.5metresrelated to Caribou Extension. Mineralization contains 1% disseminated pyrite and 3% pyrite-quartz clusters within a gabbro with moderate carbonate alteration.

OSK-W-18-1457intersected 10.5 g/t Au over 2.3 metresin Bobcat. Mineralization contains up to 4% pyrite stringers associated with a tourmaline breccia hosted in a sericitized felsic porphyritic intrusion.

OSK-W-18-1459intersected 9.52 g/t Au over 2.0 metresin Bobcat. Mineralization contains 8% pyrite stringer, 3% pyrite stringers and clusters and 2% pyrite in a crustiform vein in a silicified and chloritized gabbro with strong fuchsite alteration.

Qualified Person

Quality Control and Reporting Protocols

True widths determinations are estimated at 65-80% of the reported core length intervals for most of the zones. Assays are uncut except where indicated. Intercepts occur within geological confines of major zones but have not been correlated to individual vein domains at this time. Reported intervals include minimum weighted averages of 3.0 g/t Au diluted over core lengths of at least 2.0 metres. All NQ core assays reported were obtained by either 1-kilogram screen fire assay or standard 50-gram fire-assaying-AA finish or gravimetric finish at ALS Laboratories in Val d’Or, Québec, Thunder Bay and Sudbury, Ontario or Vancouver, British Colombia or Bureau Veritas in Timmins, Ontario. The 1-kilogram screen assay method is selected by the geologist when samples contain coarse gold or present a higher percentage of pyrite than surrounding intervals. Selected samples are also analyzed for multi-elements, including silver, using an Aqua Regia-ICP-AES method at ALS Laboratories. Drill program design, Quality Assurance/Quality Control (“QA/QC”) and interpretation of results is performed by qualified persons employing a QA/QC program consistent with NI 43-101 and industry best practices. Standards and blanks are included with every 20 samples for QA/QC purposes by the Corporation as well as the lab. Approximately 5% of sample pulps are sent to secondary laboratories for check assay.

About the Windfall Lake Gold Deposit

The Windfall Lake gold deposit is located between Val-d’Or and Chibougamau in the Abitibi region of Québec, Canada. The mineral resource defined by the previous operator comprises 2,762,000 tonnes at 8.42 g/t Au (748.000 ounces) in the indicated category and 3,512,000 tonnes at 7.62 g/t Au (860,000 ounces) in the inferred category (sourced from a technical report dated June 10, 2015 entitled”Preliminary Economic Assessment of the Windfall Lake Gold Property, Québec, Canada”with an effective date of April 28, 2015, prepared in accordance with NI 43-101). The Windfall Lake gold deposit is currently one of the highest grade resource-stage gold projects in Canada. The bulk of the mineralization occurs in the Main Zone, a southwest/northeast trending zone of stacked mineralized lenses, measuring approximately 600 metres wide and at least 1,400 metres long. The deposit is well defined from surface to a depth of 500 metres, and remains open along strike and at depth. Mineralization has been identified only 30 metres from surface in some areas and as deep as 870 metres in others, with significant potential to extend mineralization up and down-plunge and at depth.

About Osisko Mining Inc.

Osisko is a mineral exploration company focused on the acquisition, exploration, and development of precious metal resource properties in Canada. Osisko holds a 100% in the high-grade Windfall Lake gold deposit located between Val-d’Or and Chibougamau in Québec and holds a 100% undivided interest in a large area of claims in the surrounding Urban Barry area and nearby Quevillon area (over 3,300 square kilometres), a 100% interest in the Marban project located in the heart of Québec’s prolific Abitibi gold mining district, and properties in the Larder Lake Mining Division in northeast Ontario, including the Jonpol and Garrcon deposits on the Garrison property, the Buffonta past producing mine and the Gold Pike mine property. The Corporation also holds interests and options in a number of additional properties in northern Quebec and Ontario. Osisko continues to be well financed with approximately $190 million in cash and investments as of December 31, 2017.

Cautionary Note Regarding Forward-Looking Information

This news release contains “forward-looking information” within the meaning of the applicable Canadian securities legislation that is based on expectations, estimates, projections and interpretations as at the date of this news release. The information in this news release about the Windfall Lake gold deposit being one of the highest grade resource-stage gold projects in Canada; the current 800,000 metre drill program; the significance of new results from the ongoing drill program at the Windfall Lake gold project; the significance of assay results presented in this press release; the type of drilling included in the drill program (definition, expansion and exploration drilling in and around the main Windfall Lake gold deposit and the adjacent Lynx deposit, and exploration drilling on the greater deposit and Urban-Barry project area); potential mineralization; the potential to extend mineralization up and down-plunge and at depth at the Windfall Lake gold deposit; the ability to realize upon any mineralization in a manner that is economic; the ability to complete any proposed exploration activities and the results of such activities, including the continuity or extension of any mineralization; and any other information herein that is not a historical fact may be “forward-looking information”. Any statement that involves discussions with respect to predictions, expectations, interpretations, beliefs, plans, projections, objectives, assumptions, future events or performance (often but not always using phrases such as “expects”, or “does not expect”, “is expected”, “interpreted”, “management’s view”, “anticipates” or “does not anticipate”, “plans”, “budget”, “scheduled”, “forecasts”, “estimates”, “believes” or “intends” or variations of such words and phrases or stating that certain actions, events or results “may” or “could”, “would”, “might” or “will” be taken to occur or be achieved) are not statements of historical fact and may be forward-looking information and are intended to identify forward-looking information. This forward-looking information is based on reasonable assumptions and estimates of management of the Corporation. at the time it was made, involves known and unknown risks, uncertainties and other factors which may cause the actual results, performance or achievements of Osisko to be materially different from any future results, performance or achievements expressed or implied by such forward-looking information. Such factors include, among others, risks relating to the ability of exploration activities (including drill results) to accurately predict mineralization; errors in management’s geological modelling; the ability of Osisko to complete further exploration activities, including drilling; property interests in the Windfall Lake gold project; the ability of the Corporation to obtain required approvals and complete transactions on terms announced; the results of exploration activities; risks relating to mining activities; the global economic climate; metal prices; dilution; environmental risks; and community and non-governmental actions. Although the forward-looking information contained in this news release is based upon what management believes, or believed at the time, to be reasonable assumptions. Osisko cannot assure shareholders and prospective purchasers of securities of the Corporation that actual results will be consistent with such forward-looking information, as there may be other factors that cause results not to be as anticipated, estimated or intended, and neither Osisko nor any other person assumes responsibility for the accuracy and completeness of any such forward-looking information, Osisko does not undertake, and assumes no obligation, to update or revise any such forward-looking statements or forward-looking information contained herein to reflect new events or circumstances, except as may be required by law.

For further information please contact:
John Burzynski. President and Chief Executive Officer
Telephone: (416) 363-8653

OSISKO INTERSECTS 115 g/t Au OVER 8.4 METRES AT LYNX

Posted on April 26, 2018November 8, 2023 by Yannick Fradette

Infill Drilling Continues to Encounter High-Grade Gold

(Toronto, April 26, 2018) Osisko Mining Inc. (OSK:TSX. “Osisko” or the “Corporation”) is pleased to provide new results from the ongoing drill program at its 100% owned Windfall Lake gold project located in the Abitibi greenstone belt, Urban Township, Eeyou Istchee James Bay, Québec. The 800,000 metre drill program combines definition, expansion and exploration drilling in and around the main Windfall gold deposit and the adjacent Lynx deposit (located immediately NE of Windfall).

Significant new analytical results from 19 intercepts in 12 drill holes and 5 wedges focused on infill drilling in the Lynx deposit are presented below. Today’s infill drilling results will not be included in the pending mineral resource scheduled for release in May 2018.

Highlights from the new results include: 115 g/t Au over 8.4 metres in OSK-W-17-1363; 58.7 g/t Au over 5.1 metres in OSK-W-17-1343-W1; 118 g/t Au over 2.5 metres and 85.1 g/t Au over 2.0 metres in OSK-W-17-1169-W2; 72.8 g/t Au over 3.1 metres in OSK-W-17-1166; 68.8 g/t Au over 2.0 metres in OSK-W-17-928; 67.0 g/t Au over 2.0 metres in OSK-W-17-1396; 50.3 g/t Au over 2.3 metres in OSK-W-17-986; and 43.0 g/t Au over 2.6 metres in OSK-W-17-1320. Maps showing hole locations and full analytical results are available at www.osiskomining.com.

Hole Number	From (m)	To (m)	Interval (m)	Au (g/t) uncut	Au (g/t) cut to 100 g/t	Zone	Corridor
OSK-W-17-928	247.0	249.0	2.0	68.8	50	Lynx HW	Lynx
including	247.0	248.0	1.0	138	100	Lynx HW	Lynx
OSK-W-17-986	337.7	340.0	2.3	50.3	48.7	VNCR	Lynx
including	338.4	339.5	1.1	104	100	VNCR	Lynx
OSK-W-17-1166	973.0	976.1	3.1	72.8	14.9	Lynx 4	Lynx
including	974.4	974.8	0.4	549	100	Lynx 4	Lynx
OSK-W-17-1320	90.4	93.0	2.6	43.0	15.6	Vein	Lynx
including	91.3	91.7	0.4	278	100	Vein	Lynx
OSK-W-17-1343-W1	596.7	601.8	5.1	58.7	30.3	Lynx HW	Lynx
including	597.7	599.0	1.3	212	100	Lynx HW	Lynx
OSK-W-17-1363	373.6	382.0	8.4	115	24.0	Lynx 2	Lynx
including	377.0	377.7	0.7	1190	100
including	379.0	380.0	1.0	97.7
OSK-W-17-1396	873.0	875.0	2.0	67.0	15.3	Lynx 4	Lynx
including	873.8	874.1	0.3	445	100	Lynx 4	Lynx
OSK-W-18-1169-W1	564.0	566.1	2.1	7.84		Lynx 2	Lynx
OSK-W-18-1169-W2	908.1	910.6	2.5	118	49.7	Lynx 4	Lynx
including	908.4	909.0	0.6	386	100	Lynx 4	Lynx
	925.0	927.0	2.0	4.09		Lynx 4	Lynx
	1082.0	1084.0	2.0	85.1	46.9	Lynx 4	Lynx
including	1082.3	1083.2	0.9	185	100	Lynx 4	Lynx
OSK-W-18-1367-W2	878.0	882.0	4.0	4.55		Lynx	Lynx
OSK-W-18-1424	878.2	880.7	2.5	4.24		Lynx 4	Lynx
including	879.1	879.9	0.8	12.2		Lynx 4	Lynx
OSK-W-18-1432-W1	944.0	946.5	2.5	8.89		Lynx 4	Lynx
OSK-W-18-1443	584.0	586.0	2.0	4.25		Lynx HW	Lynx
including	584.4	585.0	0.6	13.7		Lynx HW	Lynx
OSK-W-18-1450	565.1	567.3	2.2	36.7		Lynx 2	Lynx
OSK-W-18-1454	896.1	898.7	2.6	17.0	16.4	Lynx 4	Lynx
including	896.1	896.5	0.4	104	100	Lynx 4	Lynx
OSK-W-18-1455	441.0	443.0	2.0	4.12		Lynx HW	Lynx
including	441.3	442.0	0.7	10.5		Lynx HW	Lynx
OSK-W-18-1460	332.0	337.4	5.4	4.50		Lynx HW	Lynx
including	332.0	332.5	0.5	20.3
including	337.0	337.4	0.4	28.5

Notes: True widths are estimated at 65 – 80% of the reported core length interval. See “Quality Control” below.
Definitions: HW = Hanging Wall; VNCR = Crustiform Vein.

Hole Number	Azimuth (°)	Dip (°)	Length (m)	UTM E	UTM N	Section
OSK-W-17-928	333	-64	465	453433	5434905	3550
OSK-W-17-986	328	-66	360	453447	5435019	3600
OSK-W-17-1166	132	-59	1182	453621	5435639	4050
OSK-W-18-1169-W1	129	-55	1301	453332	5435467	3725
OSK-W-18-1169-W2	129	-55	1155	453332	5435467	3725
OSK-W-17-1320	328	-76	852	452906	5434846	3050
OSK-W-17-1343-W1	137	-56	870	453570	5435490	3950
OSK-W-17-1363	341	-72	513	453458	5435025	3625
OSK-W-18-1367-W2	131	-52	1224	453753	5435875	4300
OSK-W-17-1396	134	-52	956	453439	5435484	3825
OSK-W-18-1424	357	-57	930	453357	5434365	3200
OSK-W-18-1432-W1	132	-55	1149	453809	5435783	4300
OSK-W-18-1443	136	-50	792	453440	5435478	3825
OSK-W-18-1450	135	-53	660	453384	5435519	3800
OSK-W-18-1454	145	-53	1089	453375	5435455	3750
OSK-W-18-1455	140	-49	552	453568	5435492	3950
OSK-W-18-1460	143	-51	432	453468	5435347	3775

OSK-W-17-928 intersected 68.8 g/t Au over 2.0 metres in Lynx HW. Mineralization contains trace disseminated pyrite within a moderate sericite and weak silica altered rhyolite.

OSK-W-17-986 intersected a crustiform vein returning 50.3 g/t Au 2.3 metres. Mineralization contains local visible gold, 2% pyrite stringers, 2% crustiform quartz-carbonate veins and pyrite-silica flooding within a silica, carbonate and fuchsite altered gabbro.

OSK-W-17-1166 intersected 72.8 g/t Au over 3.1 metres in Lynx 4. Mineralization contains local visible gold, 10% pyrite-silica flooding and 3% pyrite-tourmaline stringers within a porphyritic felsic dike.

OSK-W-17-1320 intersected 43.0 g/t Au over 2.6 metres in Lynx. Mineralization contains 1% disseminated pyrite and trace pyrite in quartz veins within in a strong chlorite, moderate silica and weak sericite altered porphyritic felsic dike.

OSK-W-17-1343-W1 intersected 58.7 g/t Au over 5.1 metres in Lynx HW. Mineralization contains 3% pyrite-silica flooding, 1% pyrite-tourmaline stringers and a 10 centimetres quartz vein within a strong silica and moderate sericite altered porphyritic felsic dike.

OSK-W-17-1363 intersected 115 g/t Au over 8.4 metres in Lynx 2. Mineralization contains local visible gold and electrum and up to 25% disseminated pyrite or pyrite-tourmaline stringers within strong pervasive silica flooding. The gabbro host is strongly fuchsite and silica altered.

OSK-W-17-1396 intersected 67.0 g/t Au over 2.0 metres in Lynx 4. Mineralization contains 1% pyrite in quartz-tourmaline veins and 3% disseminated pyrite within a moderate sericite, moderate fuchsite and weak silica altered rhyolite.

OSK-W-18-1169-W1 intersected 7.84 g/t Au over 2.1 metres in Lynx 2. Mineralization contains 2% pyrite disseminated or as stringers and 10% quartz-carbonate and tourmalines veins within a silica and fuchsite altered gabbro.

OSK-W-18-1169-W2 intersected three intervals in Lynx 4: 118 g/t Au over 2.5 metres, 4.09 g/t Au over 2.0 metres and 85.1 g/t Au over 2.0 metres. The first interval contains local visible gold, up to 15% pyrite-tourmaline stringers and 1% disseminated pyrite within strong pervasive silica alteration at the contact between a silicified and sericitized gabbro and a sericitized rhyolite. The second interval contains local visible gold and 10% pyrite in smoky-quartz veins within a sericite altered rhyolite. The third interval contains local visible gold and 5% pyrite-tourmaline stringers within a strong silica, moderate sericite, moderate ankerite and weak fuchsite altered rhyolite.

OSK-W-18-1367-W2 intersected 4.55 g/t Au over 4.0 meters in Lynx Corridor. Mineralization contains 1% pyrite clusters and trace pyrite-silica flooding within a moderate chlorite and weak silica altered rhyolite.

OSK-W-18-1424 intersected 4.24 g/t Au over 2.5 metres in Lynx 4. Mineralization contains up to 2% pyrite-tourmaline and 1% pyrite in quartz-carbonate veins within a sericitized zone at the contact between a porphyritic felsic dike and a rhyolite.

OSK-W-18-1432-W1 intersected 8.89 g/t Au over 2.5 metres in Lynx 4. Mineralization contains up to 15% pyrite stringers at low core angles, 2% disseminated pyrite and traces of pyrite in ptygmatic tourmaline veins at the contact between a sericitized porphyritic felsic dike and a strongly bleached gabbro.

OSK-W-18-1443 intersected 4.25 g/t Au over 2.0 metres in Lynx HW. Mineralization contains 10% disseminated pyrite and trace pyrite clusters within a bleached, chloritized and silicified gabbro.

OSK-W-18-1450 intersected 36.7 g/t Au over 2.2 metres in Lynx 2. Mineralization contains up to 8% pyrite-silica flooding within a strong silica and weak sericite altered gabbro.

OSK-W-18-1454 intersected 17.0 g/t Au over 2.6 metres in Lynx 4. Mineralization is composed of 2% disseminated pyrite and quartz-tourmaline veins, and 1% pyrite-tourmaline stringers within a strong sericite altered rhyolite.

OSK-W-18-1455 intersected 4.12 g/t Au over 2.0 metres in Lynx HW. Mineralization contains up to 4% disseminated pyrite, up to 2% pyrite stringers and trace pyrite clusters at the contact between a fuchsite altered gabbro and a felsic porphyritic dike.

OSK-W-18-1460 intersected 4.50 g/t Au over 5.4 metres in Lynx HW. Mineralization contains 2% pyrite-silica flooding and 1% disseminated pyrite at the contact between a strong silica altered rhyolite and a felsic intrusion.

Qualified Person
The scientific and technical content of this news release has been reviewed, prepared and approved by Mr. Louis Grenier, M.Sc.A., P.Geo. (OGQ 800), Project Manager of the Windfall Lake gold project, who is a “qualified person” as defined by National Instrument 43-101 – Standards of Disclosure for Mineral Projects (“NI 43-101”).

Quality Control and Reporting Protocols
True widths determinations are estimated at 65-80% of the reported core length intervals for most of the zones. Assays are uncut except where indicated. Intercepts occur within geological confines of major zones but have not been correlated to individual vein domains at this time. Reported intervals include minimum weighted averages of 3.0 g/t Au diluted over core lengths of at least 2.0 metres. All NQ core assays reported were obtained by either 1-kilogram screen fire assay or standard 50-gram fire-assaying-AA finish or gravimetric finish at ALS Laboratories in Val d’Or, Québec, Thunder Bay and Sudbury, Ontario or Vancouver, British Colombia or Bureau Veritas in Timmins, Ontario. The 1-kilogram screen assay method is selected by the geologist when samples contain coarse gold or present a higher percentage of pyrite than surrounding intervals. Selected samples are also analyzed for multi-elements, including silver, using an Aqua Regia-ICP-AES method at ALS Laboratories. Drill program design, Quality Assurance/Quality Control (“QA/QC”) and interpretation of results is performed by qualified persons employing a QA/QC program consistent with NI 43-101 and industry best practices. Standards and blanks are included with every 20 samples for QA/QC purposes by the Corporation as well as the lab. Approximately 5% of sample pulps are sent to secondary laboratories for check assay.

About the Windfall Lake Gold Deposit
The Windfall Lake gold deposit is located between Val-d’Or and Chibougamau in the Abitibi region of Québec, Canada. The mineral resource defined by the previous operator comprises 2,762,000 tonnes at 8.42 g/t Au (748.000 ounces) in the indicated category and 3,512,000 tonnes at 7.62 g/t Au (860,000 ounces) in the inferred category (sourced from a technical report dated June 10, 2015 entitled “Preliminary Economic Assessment of the Windfall Lake Gold Property, Québec, Canada” with an effective date of April 28, 2015, prepared in accordance with NI 43-101). The Windfall Lake gold deposit is currently one of the highest grade resource-stage gold projects in Canada. The bulk of the mineralization occurs in the Main Zone, a southwest/northeast trending zone of stacked mineralized lenses, measuring approximately 600 metres wide and at least 1,400 metres long. The deposit is well defined from surface to a depth of 500 metres, and remains open along strike and at depth. Mineralization has been identified only 30 metres from surface in some areas and as deep as 870 metres in others, with significant potential to extend mineralization up and down-plunge and at depth.

About Osisko Mining Inc.
Osisko is a mineral exploration company focused on the acquisition, exploration, and development of precious metal resource properties in Canada. Osisko holds a 100% in the high-grade Windfall Lake gold deposit located between Val-d’Or and Chibougamau in Québec and holds a 100% undivided interest in a large area of claims in the surrounding Urban Barry area and nearby Quevillon area (over 3,300 square kilometres), a 100% interest in the Marban project located in the heart of Québec’s prolific Abitibi gold mining district, and properties in the Larder Lake Mining Division in northeast Ontario, including the Jonpol and Garrcon deposits on the Garrison property, the Buffonta past producing mine and the Gold Pike mine property. The Corporation also holds interests and options in a number of additional properties in northern Quebec and Ontario. Osisko continues to be well financed with approximately $190 million in cash and investments as of December 31, 2017.

Cautionary Note Regarding Forward-Looking Information
This news release contains “forward-looking information” within the meaning of the applicable Canadian securities legislation that is based on expectations, estimates, projections and interpretations as at the date of this news release. The information in this news release about the Windfall Lake gold deposit being one of the highest grade resource-stage gold projects in Canada; the current 800,000 metre drill program; the significance of new results from the ongoing drill program at the Windfall Lake gold project; the significance of assay results presented in this press release; the type of drilling included in the drill program (definition, expansion and exploration drilling in and around the main Windfall Lake gold deposit and the adjacent Lynx deposit, and exploration drilling on the greater deposit and Urban-Barry project area); potential mineralization; the potential to extend mineralization up and down-plunge and at depth at the Windfall Lake gold deposit; the ability to realize upon any mineralization in a manner that is economic; the ability to complete any proposed exploration activities and the results of such activities, including the continuity or extension of any mineralization; and any other information herein that is not a historical fact may be “forward-looking information”. Any statement that involves discussions with respect to predictions, expectations, interpretations, beliefs, plans, projections, objectives, assumptions, future events or performance (often but not always using phrases such as “expects”, or “does not expect”, “is expected”, “interpreted”, “management’s view”, “anticipates” or “does not anticipate”, “plans”, “budget”, “scheduled”, “forecasts”, “estimates”, “believes” or “intends” or variations of such words and phrases or stating that certain actions, events or results “may” or “could”, “would”, “might” or “will” be taken to occur or be achieved) are not statements of historical fact and may be forward-looking information and are intended to identify forward-looking information. This forward-looking information is based on reasonable assumptions and estimates of management of the Corporation. at the time it was made, involves known and unknown risks, uncertainties and other factors which may cause the actual results, performance or achievements of Osisko to be materially different from any future results, performance or achievements expressed or implied by such forward-looking information. Such factors include, among others, risks relating to the ability of exploration activities (including drill results) to accurately predict mineralization; errors in management’s geological modelling; the ability of Osisko to complete further exploration activities, including drilling; property interests in the Windfall Lake gold project; the ability of the Corporation to obtain required approvals and complete transactions on terms announced; the results of exploration activities; risks relating to mining activities; the global economic climate; metal prices; dilution; environmental risks; and community and non-governmental actions. Although the forward-looking information contained in this news release is based upon what management believes, or believed at the time, to be reasonable assumptions. Osisko cannot assure shareholders and prospective purchasers of securities of the Corporation that actual results will be consistent with such forward-looking information, as there may be other factors that cause results not to be as anticipated, estimated or intended, and neither Osisko nor any other person assumes responsibility for the accuracy and completeness of any such forward-looking information, Osisko does not undertake, and assumes no obligation, to update or revise any such forward-looking statements or forward-looking information contained herein to reflect new events or circumstances, except as may be required by law.

For further information please contact:
John Burzynski. President and Chief Executive Officer
Telephone: (416) 363-8653

OSISKO INTERSECTS 41.2 g/t Au OVER 3.5 METRES AT WINDFALL

Posted on April 19, 2018November 8, 2023 by Yannick Fradette

Additional High-Grade Infill Holes in Caribou, Underdog and Bobcat

(Toronto, April 19, 2018) Osisko Mining Inc. (OSK:TSX. “Osisko” or the “Corporation”) is pleased to provide new results from the ongoing drill program at its 100% owned Windfall Lake gold project located in the Abitibi greenstone belt, Urban Township, Eeyou Istchee James Bay, Québec. The 800,000 metre drill program combines definition, expansion and exploration drilling in and around the main Windfall gold deposit and the adjacent Lynx deposit (located immediately NE of Windfall).

Significant new analytical results from 46 intercepts in 23 drill holes and 5 wedges focused on infill drilling in the Main Windfall lake deposit are presented below. Today’s infill drilling results will not be included in the pending mineral resource scheduled for release in May 2018.

Highlights from the new results include: 82.5 g/t Au over 2.0 metres in OSK-W-17-1391; 41.2 g/t Au over 3.5 metres in OSK-W-18-1402-W3; 34.3 g/t Au over 2.6 metres in OSK-W-18-1435; 31.4 g/t Au over 2.7 metres in OSK-W-18-1440; 5.53 g/t Au over 11.9 metres in OSK-W-17-801; and 24.0 g/t Au over 2.4 metres in OSK-W-17-1409. Maps showing hole locations and full analytical results are available at www.osiskomining.com.

Hole Number	From (m)	To (m)	Interval (m)	Au (g/t) uncut	Au (g/t) cut to 100 g/t	Zone	Corridor
OSK-EAG-12-333	787.0	789.0	2.0	5.38		FW3	Underdog
including	787.8	788.1	0.3	34.7		FW3	Underdog
OSK-EAG-12-424	832.6	835.1	2.5	6.72		FW3	Underdog
OSK-W-17-801	688.1	691.0	2.9	7.75		Caribou Ext.	Caribou
	697.0	699.4	2.4	3.70		Caribou Ext.	Caribou
	758.5	770.4	11.9	5.53		Caribou Ext.	Caribou
including	758.5	762.0	3.5	10.6		Caribou Ext.	Caribou
	777.0	781.4	4.4	3.92		Caribou Ext.	Caribou
OSK-W-17-1371	722.1	724.6	2.5	3.96		Vein	Wolf
including	724.0	724.6	0.6	15.6		Vein	Wolf
OSK-W-17-1378	229.9	232.0	2.1	4.41		Caribou	Caribou
	336.9	339.4	2.5	5.36		Caribou	Caribou
OSK-W-17-1379	485.0	487.3	2.3	3.03		Caribou Ext.	Caribou
OSK-W-17-1391	501.0	503.0	2.0	82.5	35.6	Vein	Caribou
including	501.0	501.7	0.7	234	100	Vein	Caribou
OSK-W-17-1394	780.5	782.6	2.1	4.25		Caribou Ext.	Caribou
including	781.0	781.6	0.6	14.7		Caribou Ext.	Caribou
OSK-W-17-1397	639.0	641.0	2.0	3.53		VNCR	Caribou
	711.0	713.2	2.2	3.69		Vein	Caribou
OSK-W-17-1399	658.5	661.0	2.5	4.45		Caribou Ext.	Caribou
OSK-W-17-1406	117.0	119.0	2.0	7.28		Vein	Bobcat
including	117.0	118.0	1.0	13.8		Vein	Bobcat
	129.0	131.0	2.0	6.91		QTV	Bobcat
including	129.4	130.3	0.9	15.2		QTV	Bobcat
OSK-W-17-1409	133.3	135.7	2.4	24.0	13.6	Bobcat	Bobcat
including	135.4	135.7	0.3	184	100	Bobcat	Bobcat
	205.0	207.0	2.0	6.11		Bobcat	Bobcat
including	205.4	206.0	0.6	19.5		Bobcat	Bobcat
	350.0	352.4	2.4	7.17		Caribou Ext.	Caribou
including	351.0	351.5	0.5	34.1		Caribou Ext.	Caribou
OSK-W-18-1066-W1	944.4	946.4	2.0	12.9		FW3	Underdog
including	945.0	945.7	0.7	36.0		FW3	Underdog
	1008.2	1010.4	2.2	21.0		FW3 FW	Underdog
including	1008.8	1009.1	0.3	81.6		FW3 FW	Underdog
OSK-W-18-1402-W1	826.5	833.1	6.6	4.07		FW1	Underdog
OSK-W-18-1402-W3	778.0	780.3	2.3	8.11		FW0	Underdog
including	779.2	779.7	0.5	25.5		FW0	Underdog
	821.1	824.6	3.5	6.21		FW1	Underdog
	880.0	882.0	2.0	4.98		FW1 FW	Underdog
including	881.0	881.7	0.7	12.3		FW1 FW	Underdog
	888.5	892.0	3.5	41.2		FW1 FW	Underdog
including	888.5	890.0	1.5	65.9		FW1 FW	Underdog
	1104.7	1109.4	4.7	9.36		FW3	Underdog
including	1104.7	1105.1	0.4	35.4
including	1109.1	1109.4	0.3	96.1
OSK-W-18-1423	509.8	512.0	2.2	5.63		Caribou Ext.	Caribou
including	509.8	510.5	0.7	17.3		Caribou Ext.	Caribou
OSK-W-18-1430	707.5	709.5	2.0	7.91		FW1	Underdog
including	708.3	708.9	0.6	23.1		FW1	Underdog
OSK-W-18-1430-W1	818.0	821.0	3.0	4.95		FW2	Underdog
OSK-W-18-1431	1070.0	1072.0	2.0	5.73		FW4	Underdog
OSK-W-18-1431-W1	758.0	760.3	2.3	3.06		FW1	Underdog
	967.8	969.9	2.1	13.5		FW3 FW	Underdog
including	969.2	969.9	0.7	28.0		FW3 FW	Underdog
OSK-W-18-1434	859.5	864.2	4.7	11.6		FW3	Underdog
including	859.5	860.0	0.5	63.4
including	863.8	864.2	0.4	45.5
	960.0	962.4	2.4	16.0		FW3U	Underdog
including	962.0	962.4	0.4	68.7		FW3U	Underdog
OSK-W-18-1435	532.0	534.6	2.6	34.3	24.7	Caribou Ext.	Caribou
including	533.3	533.9	0.6	142	100	Caribou Ext.	Caribou
	539.0	541.0	2.0	4.38		Caribou Ext.	Caribou
including	540.2	540.5	0.3	29.0		Caribou Ext.	Caribou
OSK-W-18-1440	729.3	732.0	2.7	31.4	26.7	FW1	Underdog
including	730.3	731.0	0.7	118	100	FW1	Underdog
OSK-W-18-1441	181.0	187.6	6.6	8.06		Bobcat	Bobcat
OSK-W-18-1445	531.9	535.4	3.5	5.75		Caribou Ext.	Caribou
OSK-W-18-1446	679.0	682.2	3.2	10.8		FW1	Underdog
including	680.2	680.8	0.6	32.6		FW1	Underdog
	761.0	763.0	2.0	4.27		FW2	Underdog
including	761.7	762.4	0.7	12.1		FW2	Underdog
	794.6	796.8	2.2	4.05		FW3	Underdog
including	795.2	796.0	0.8	11.0		FW3	Underdog
OSK-W-18-1448	263.0	265.0	2.0	6.02		Caribou	Caribou
OSK-W-18-1459	180.0	182.0	2.0	8.26		VNCR	Bobcat

Notes:

True widths are estimated at 65 – 80% of the reported core length interval. See “Quality Control”
Definitions: Ext = extension, FW = Footwall, QTV = Quartz-Tourmaline Vein, U = Upper, VNCR = Crustiform Vein

Hole Number	Azimuth (°)	Dip (°)	Length (m)	UTM E	UTM N	Section
OSK-EAG-12-333	333	-58	983	452459	5434565	2525
OSK-EAG-12-424	330	-55	1003	452598	5434580	2650
OSK-W-17-801	333	-69	840	453192	5434907	3325
OSK-W-17-1371	334	-69	981	453100	5434875	3225
OSK-W-17-1378	331	-56	741	452688	5434638	2750
OSK-W-17-1379	332	-66	540	452781	5434772	2900
OSK-W-17-1391	327	-62	663	452981	5434900	3150
OSK-W-17-1394	335	-49	1165	453146	5434512	3100
OSK-W-17-1397	333	-61	732	453300	5434964	3450
OSK-W-17-1399	332	-61	1053	453411	5434870	3500
OSK-W-17-1406	334	-60	579	452911	5434879	3075
OSK-W-17-1409	331	-53	402	452747	5434881	2925
OSK-W-18-1066-W1	332	-56	1137	452488	5434436	2475
OSK-W-18-1402-W1	330	-59	1224	452616	5434449	2600
OSK-W-18-1402-W3	330	-59	1182	452616	5434449	2600
OSK-W-18-1423	327	-61	792	453025	5434853	3150
OSK-W-18-1430	339	-60	984	452318	5434380	2300
OSK-W-18-1430-W1	339	-60	1125	452318	5434380	2300
OSK-W-18-1431	337	-62	1128	452287	5434336	2250
OSK-W-18-1431-W1	337	-62	1092	452287	5434336	2250
OSK-W-18-1434	335	-55	1026	452452	5434496	2475
OSK-W-18-1435	331	-65	801	453028	5434848	3150
OSK-W-18-1440	329	-57	870	452418	5434448	2425
OSK-W-18-1441	328	-60	441	452886	5434912	3075
OSK-W-18-1445	337	-66	660	452892	5434867	3050
OSK-W-18-1446	335	-48	987	452257	5434332	2225
OSK-W-18-1448	333	-52	483	452688	5434808	2850
OSK-W-18-1459	132	-50	621	452860	5435186	3175

OSK-EAG-12-333 intersected 5.38 g/t Au over 2.0 metres in FW3. Mineralization is composed of 7% pyrite-silica flooding and up to 1% pyrite stringers within a strong silica, weak sericite altered felsic porphyritic dike.

OSK-EAG-12-424 intersected 6.72 g/t Au over 2.5 metres in FW3. Mineralization is composed of up to 5% pyrite stringers, 1% pyrite clusters and quartz veins within a moderate sericitized felsic porphyritic dike.

OSK-W-17-801 intersected four intervals in Caribou Extension: 7.75 g/t Au over 2.9 metres, 3.70 g/t Au over 2.4 metres, 5.53 g/t Au over 11.9 metres and 3.92 g/t Au over 4.4 metres. The first and second intervals are composed of up to 5% pyrite stringers and semi-massive pyrite within a strong sericite altered andesite. In the third and fourth intervals, mineralization is composed of up to 3% pyrite stringers, 3% pyrite clusters and 1% disseminated pyrite at the contact between a strong chlorite altered andesite and a strong sericite altered felsic porphyritic dike. These two intervals are 100 metres down plunge of OSK-W-17-1351 (3.65 g/t Au over 2.2 metres and 3.64 g/t Au over 2.3 metres previously reported January 18, 2018).

OSK-W-17-1371 intersected 3.96 g/t Au over 2.5 metres in Wolf. Mineralization is hosted in a quartz vein and composed of up to 2% disseminated pyrite within a strong chlorite altered andesite.

OSK-W-17-1378 intersected two intervals in Caribou: 4.41 g/t Au over 2.1 metres and 5.36 g/t Au over 2.5 metres. The first interval is composed of 1% pyrite stringers within strong chlorite, and weak fuchsite altered felsic porphyritic dike. The second interval is composed of trace disseminated or stringer pyrite and quartz-tourmaline veins within a strong chlorite altered andesite.

OSK-W-17-1379 intersected 3.03 g/t Au over 2.3 metres in Caribou Extension. Mineralization is composed of trace pyrite stringer and chalcopyrite within a felsic porphyritic dike.

OSK-W-17-1391 intersected 82.5 g/t Au over 2.0 metres in Caribou. Mineralization is composed of 1% pyrite stringers and quartz vein within a chloritized andesite.

OSK-W-17-1394 intersected 4.25 g/t Au over 2.1 metres in Caribou Extension. Mineralization is composed of 2% pyrite stringers, 1% disseminated pyrite within a strong sericite altered rhyolite.

OSK-W-17-1397 intersected two veins in Caribou returning 3.53 g/t Au over 2.0 metre and 3.69 g/t Au over 2.2 metres. Both intersects are composed of up to 15% disseminated pyrite hosted in quartz veins within a strong silica, strong sericite and moderate chlorite altered rhyolite.

OSK-W-17-1399 intersected 4.45 g/t Au over 2.5 metres in Caribou Extension. Mineralization is composed of 2% pyrite clusters and quartz veins within a weak sericite altered rhyolite layered with gabbro.

OSK-W-17-1406 intersected two intervals in Bobcat: 7.28 g/t Au over 2.0 metres and 6.91 g/t Au over 2.0 metres. Both intersects are composed of up to 4% disseminated pyrite and quartz-tourmaline crustiform veins within a weak sericite altered gabbro.

OSK-W-17-1409 intersected three intervals: 24.0 g/t Au over 2.4 metres and 6.11 g/t Au over 2.0 metres in Bobcat and 7.17 g/t Au over 2.4 metres in Caribou Extension. The first two intervals are composed of trace disseminated and stringer pyrite and quartz-tourmaline veins within a strong sericite and silica altered rhyolite. The last interval is composed of trace disseminated pyrite and quartz-tourmaline veins within a strong chlorite and weak sericite altered rhyolite.

OSK-W-18-1066-W1 intersected two intervals: 12.9 g/t Au over 2.0 metres in FW3 and 21.0 g/t Au over 2.2 metres in FW3 Footwall. The first interval is composed of 35% semi-massive pyrite within a strong sericite altered felsic porphyritic dike. The second interval is composed of 10% pyrite stringers and pyrite-silica flooding within a moderate sericite altered felsic porphyritic dike.

OSK-W-18-1402-W1 intersected 4.07 g/t Au over 6.6 metres in FW1. Mineralization is composed of up to 2% pyrite in stockwork and stringers within a strong sericite altered felsic porphyritic dike.

OSK-W-18-1402-W3 intersected five intervals: 8.11 g/t Au over 2.3 metres in FW0, 6.21 g/t Au over 3.5 metres in FW1, 4.98 g/t Au over 2.0 metres and 41.2 g/t Au over 3.5 metres in FW1 FW, and 9.36 g/t Au over 4.7 metres in FW3. The first interval is composed of up to 15% pyrite in pyrite-silica flooding, stringers and disseminated within a strong sericite altered felsic porphyritic dike. The second interval is composed of up to 3% pyrite-silica flooding, 1% chalcopyrite and quartz veins within a strong silica and sericite altered felsic porphyritic dike. The third and fourth intervals are composed of up to 20% pyrite-silica flooding, up to 2% chalcopyrite, 1% quartz-tourmaline veins and local visible gold within strong silica and strong sericite altered felsic porphyritic dikes. The last interval is composed of 10% pyrite stringers, 2% disseminated pyrite and local visible gold within a strong sericite and strong silica altered felsic porphyritic dike.

OSK-W-18-1423 intersected 5.63 g/t Au over 2.2 metres in Caribou Extension. Mineralization is composed of 1% stringer and disseminated pyrite within a strong sericite altered andesite.

OSK-W-18-1430 intersected 7.91 g/t Au over 2.0 metres in FW1. Mineralization is composed of up to 30% semi-massive pyrite in stringers or pyrite-silica flooding and 5% disseminated pyrite within a moderate sericite altered felsic porphyritic dike.

OSK-W-18-1430-W1 intersected 4.95 g/t Au over 3.0 metres in FW2. Mineralization is composed of low core angle quartz-tourmaline veins with 2 % disseminated pyrite within a felsic porphyritic dike.

OSK-W-18-1431 intersected 5.73 g/t Au over 2.0 metres in FW4. Mineralization is composed of 2% pyrite stringers, 1% pyrite clusters within a strong sericite altered felsic porphyritic dike.

OSK-W-18-1431-W1 intersected two intervals: 3.06 g/t Au over 2.3 metres in FW1 and 13.5 g/t Au over 2.1 metres in FW3 FW. Both intersects are composed of up to 3% pyrite stringers, 2% disseminated pyrite and 1% pyrite clusters within strong sericite altered felsic porphyritic dikes.

OSK-W-18-1434 intersected two intervals: 11.6 g/t Au over 4.7 metres in FW3 and 16.0 g/t Au over 2.4 metres in FW3U. The first interval is composed of up to 15% pyrite stringers, pyrite-silica flooding, and local visible gold within a strong sericite and strong silica altered felsic porphyritic dike. The second interval is composed of 15% semi-massive pyrite, pyrite-tourmaline veins within a strong sericite altered felsic porphyritic dike.

OSK-W-18-1435 intersected two intervals in Caribou Extension: 34.3 g/t Au over 2.6 metres and 4.38 g/t Au over 2.0 metres. The first interval is composed of 80% massive pyrite veins and quartz-tourmaline veins within a strong chlorite, weak sericite and weak carbonate altered andesite. The second interval is composed of 15% pyrite stringers within a strong carbonate altered andesite.

OSK-W-18-1440 intersected 31.4 g/t Au over 2.7 metres in FW1. Mineralization is composed of up to 25% semi-massive pyrite, 5% pyrite-tourmaline veins, and local visible gold within a strong sericite and strong silica altered felsic porphyritic dike.

OSK-W-18-1441 intersected 8.06 g/t Au over 6.6 metres in Bobcat. Mineralization is composed of 7% disseminated pyrite and 3% pyrite-tourmaline stringers within a strong fuchsite and silica altered gabbro.

OSK-W-18-1445 intersected 5.75 g/t Au over 3.5 metres in Caribou Extension. Mineralization is composed of local visible gold and up to 35% pyrite in stringers, pyrite-tourmaline veins and clusters within a strong sericite and silica altered felsic porphyritic dike.

OSK-W-18-1446 intersected three intervals: 10.8 g/t Au over 3.2 metres in FW1, 4.27 g/t Au over 2.0 metres in FW2 and 4.05 g/t Au over 2.2 metres in FW3. The first interval is composed of up to 5% disseminated pyrite and pyrite-tourmaline veins and local visible gold within a strong silica and sericite altered felsic porphyritic dike. The second interval is composed of 3% disseminated pyrite in quartz-tourmaline veins within a moderate sericite altered felsic porphyritic dike. The last interval is composed of local visible gold, up to 5% pyrite stringers and pyrite-silica flooding within a strong silica altered felsic porphyritic dike.

OSK-W-18-1448 intersected 6.02 g/t Au over 2.0 metres in Caribou. Mineralization is composed of 9% pyrite stringers within a moderate silica and sericite altered felsic porphyritic dike.

OSK-W-18-1459 intersected 8.26 g/t Au over 2.0 metres in Bobcat. Mineralization is in a crustiform vein and composed of up to 3% disseminated pyrite within a strong silica and moderate fuchsite altered gabbro.

Qualified Person

The scientific and technical content of this news release has been reviewed, prepared and approved by Mr. Louis Grenier, M.Sc.A., P.Geo. (OGQ 800), Project Manager of the Windfall Lake gold project, who is a “Qualified Person” as defined by National Instrument 43-101 – Standards of Disclosure for Mineral Projects (“NI 43-101”).

Quality Control and Reporting Protocols

True widths determinations are estimated at 65-80% of the reported core length intervals for most of the zones. Assays are uncut except where indicated. Intercepts occur within geological confines of major zones but have not been correlated to individual vein domains at this time. Reported intervals include minimum weighted averages of 3.0 g/t Au diluted over core lengths of at least 2.0 metres. All NQ core assays reported were obtained by either 1-kilogram screen fire assay or standard 50-gram fire-assaying-AA finish or gravimetric finish at ALS Laboratories in Val d’Or, Québec, Thunder Bay and Sudbury, Ontario or Vancouver, British Colombia or Bureau Veritas in Timmins, Ontario. The 1-kilogram screen assay method is selected by the geologist when samples contain coarse gold or present a higher percentage of pyrite than surrounding intervals. Selected samples are also analyzed for multi-elements, including silver, using an Aqua Regia-ICP-AES method at ALS Laboratories. Drill program design, Quality Assurance/Quality Control (“QA/QC”) and interpretation of results is performed by qualified persons employing a QA/QC program consistent with NI 43-101 and industry best practices. Standards and blanks are included with every 20 samples for QA/QC purposes by the Corporation as well as the lab. Approximately 5% of sample pulps are sent to secondary laboratories for check assay.

About the Windfall Lake Gold Deposit

The Windfall Lake gold deposit is located between Val-d’Or and Chibougamau in the Abitibi region of Québec, Canada. The mineral resource defined by the previous operator comprises 2,762,000 tonnes at 8.42 g/t Au (748.000 ounces) in the indicated category and 3,512,000 tonnes at 7.62 g/t Au (860,000 ounces) in the inferred category (sourced from a technical report dated June 10, 2015 entitled “Preliminary Economic Assessment of the Windfall Lake Gold Property, Québec, Canada” with an effective date of April 28, 2015, prepared in accordance with NI 43-101). The Windfall Lake gold deposit is currently one of the highest grade resource-stage gold projects in Canada. The bulk of the mineralization occurs in the Main Zone, a southwest/northeast trending zone of stacked mineralized lenses, measuring approximately 600 metres wide and at least 1,400 metres long. The deposit is well defined from surface to a depth of 500 metres and remains open along strike and at depth. Mineralization has been identified only 30 metres from surface in some areas and as deep as 870 metres in others, with significant potential to extend mineralization up and down-plunge and at depth.

About Osisko Mining Inc.

Osisko is a mineral exploration company focused on the acquisition, exploration, and development of precious metal resource properties in Canada. Osisko holds a 100% in the high-grade Windfall Lake gold deposit located between Val-d’Or and Chibougamau in Québec and holds a 100% undivided interest in a large area of claims in the surrounding Urban Barry area and nearby Quevillon area (over 3,300 square kilometres), a 100% interest in the Marban project located in the heart of Québec’s prolific Abitibi gold mining district, and properties in the Larder Lake Mining Division in northeast Ontario, including the Jonpol and Garrcon deposits on the Garrison property, the Buffonta past producing mine and the Gold Pike mine property. The Corporation also holds interests and options in a number of additional properties in northern Quebec and Ontario. Osisko continues to be well financed with approximately $190 million in cash and investments as of December 31, 2017.

Cautionary Note Regarding Forward-Looking Information

This news release contains “forward-looking information” within the meaning of the applicable Canadian securities legislation that is based on expectations, estimates, projections and interpretations as at the date of this news release. The information in this news release about the Windfall Lake gold deposit being one of the highest grade resource-stage gold projects in Canada; the current 800,000 metre drill program; the significance of new results from the ongoing drill program at the Windfall Lake gold project; the significance of assay results presented in this press release; the type of drilling included in the drill program (definition drilling, expansion drilling to the NE of the main deposit and adjacent Lynx deposit, and exploration drilling on the greater deposit and Urban-Barry project area); potential mineralization; the potential to extend mineralization up and down-plunge and at depth at the Windfall Lake gold deposit; the ability to realize upon any mineralization in a manner that is economic; the ability to complete any proposed exploration activities and the results of such activities, including the continuity or extension of any mineralization; and any other information herein that is not a historical fact may be “forward-looking information”. Any statement that involves discussions with respect to predictions, expectations, interpretations, beliefs, plans, projections, objectives, assumptions, future events or performance (often but not always using phrases such as “expects”, or “does not expect”, “is expected”, “interpreted”, “management’s view”, “anticipates” or “does not anticipate”, “plans”, “budget”, “scheduled”, “forecasts”, “estimates”, “believes” or “intends” or variations of such words and phrases or stating that certain actions, events or results “may” or “could”, “would”, “might” or “will” be taken to occur or be achieved) are not statements of historical fact and may be forward-looking information and are intended to identify forward-looking information. This forward-looking information is based on reasonable assumptions and estimates of management of the Corporation. at the time it was made, involves known and unknown risks, uncertainties and other factors which may cause the actual results, performance or achievements of Osisko to be materially different from any future results, performance or achievements expressed or implied by such forward-looking information. Such factors include, among others, risks relating to the ability of exploration activities (including drill results) to accurately predict mineralization; errors in management’s geological modelling; the ability of Osisko to complete further exploration activities, including drilling; property interests in the Windfall Lake gold project; the ability of the Corporation to obtain required approvals and complete transactions on terms announced; the results of exploration activities; risks relating to mining activities; the global economic climate; metal prices; dilution; environmental risks; and community and non-governmental actions. Although the forward-looking information contained in this news release is based upon what management believes, or believed at the time, to be reasonable assumptions. Osisko cannot assure shareholders and prospective purchasers of securities of the Corporation that actual results will be consistent with such forward-looking information, as there may be other factors that cause results not to be as anticipated, estimated or intended, and neither Osisko nor any other person assumes responsibility for the accuracy and completeness of any such forward-looking information, Osisko does not undertake, and assumes no obligation, to update or revise any such forward-looking statements or forward-looking information contained herein to reflect new events or circumstances, except as may be required by law.

For further information please contact:
John Burzynski. President and Chief Executive Officer
Telephone: (416) 363-8653

OSISKO INTERSECTS 68.5 g/t Au OVER 2.9 METRES AT LYNX

Posted on April 17, 2018November 8, 2023 by Yannick Fradette

Infill Drilling Continues to Encounter High-Grade Gold

(Toronto, April 17, 2018) Osisko Mining Inc. (OSK:TSX. “Osisko” or the “Corporation”) is pleased to provide new results from the ongoing drill program at its 100% owned Windfall Lake gold project located in the Abitibi greenstone belt, Urban Township, Eeyou Istchee James Bay, Québec. The 800,000 metre drill program combines definition, expansion and exploration drilling in and around the main Windfall gold deposit and the adjacent Lynx deposit (located immediately NE of Windfall).

Significant new analytical results from 17 intercepts in 5 drill holes and 6 wedges focused on infill drilling in the Lynx deposit are presented below. Today’s infill drilling results will not be included in the pending mineral resource scheduled for release in May 2018.

Highlights from the new results include: 68.9 g/t Au over 2.9 metres in OSK-W-18-1443; 33.8 g/t Au over 5.0 metres and 48.0 g/t Au over 2.0 metres in OSK-W-18-1436; 80.0 g/t Au over 2.1 metres in OSK-W-18-1367-W2 and 28.0 g/t Au over 3.0 metres in OSK-W-17-1397. Maps showing hole locations and full analytical results are available at www.osiskomining.com.

Hole Number	From (m)	To (m)	Interval (m)	Au (g/t) uncut	Au (g/t) cut to 100 g/t	Zone	Corridor
OSK-W-17-1166-W4	672.0	674.0	2.0	11.1		Lynx 2	Lynx
OSK-W-17-1343-W2	937.0	939.0	2.0	3.59		Lynx 4	Lynx
	1134.0	1137.0	3.0	6.31		Lynx 6	Lynx
OSK-W-17-1396	707.0	709.5	2.5	5.80		Lynx 4	Lynx
OSK-W-17-1397	113.6	116.0	2.4	3.35		Lynx HW	Lynx
including	114.7	115.1	0.4	16.8		Lynx HW	Lynx
	128.6	131.6	3.0	28.0	21.2	Lynx 1	Lynx
including	128.6	128.9	0.3	98.7
including	130.9	131.2	0.3	168	100
	173.0	175.0	2.0	5.38		Lynx 2	Lynx
including	173.0	174.0	1.0	10.7		Lynx 2	Lynx
OSK-W-18-923-W2	895.0	897.2	2.2	5.32		Lynx 4	Lynx
including	895.8	896.1	0.3	38.5		Lynx 4	Lynx
	911.1	917.0	5.9	10.1		Lynx 4	Lynx
including	916.2	917.0	0.8	60.8		Lynx 4	Lynx
OSK-W-18-1169-W1	888.0	890.0	2.0	7.69		Lynx 4	Lynx
including	889.2	889.6	0.4	31.6		Lynx 4	Lynx
OSK-W-18-1367-W2	1169.6	1171.7	2.1	80.0	22.8	Lynx 4	Lynx
including	1171.4	1171.7	0.3	501	100	Lynx 4	Lynx
OSK-W-18-1414-W2	1039.0	1041.0	2.0	5.38		Lynx 4	Lynx
including	1039.0	1039.9	0.9	11.6		Lynx 4	Lynx
OSK-W-18-1429	688.4	690.5	2.1	16.9		Lynx HW	Lynx
including	690.1	690.5	0.4	41.7		Lynx HW	Lynx
OSK-W-18-1436	902.5	904.5	2.0	8.40		Lynx 4	Lynx
including	903.3	903.6	0.3	49.8		Lynx 4	Lynx
	1062.3	1064.3	2.0	48.0	25.2	Lynx 4	Lynx
including	1063.8	1064.3	0.5	191		Lynx 4	Lynx
	1069.2	1074.2	5.0	33.8		Lynx 4	Lynx
including	1069.2	1069.8	0.6	97.6		Lynx 4	Lynx
OSK-W-18-1443	668.0	670.9	2.9	68.5	45.1	Lynx 4	Lynx
including	668.9	669.9	1.0	168	100	Lynx 4	Lynx

Notes: True widths are estimated at 65 – 80% of the reported core length interval. See “Quality Control” below.
Definitions: HW = Hanging Wall.

Hole Number	Azimuth (°)	Dip (°)	Length (m)	UTM E	UTM N	Section
OSK-W-17-1166-W4	132	-59	1236	453621	5435639	4050
OSK-W-17-1343-W2	137	-56	1323	453570	5435490	3950
OSK-W-17-1396	134	-52	956	453439	5435484	3825
OSK-W-17-1397	333	-61	732	453300	5434964	3450
OSK-W-18-923-W2	137	-56	1164	453607	5435603	4025
OSK-W-18-1169-W1	129	-55	1301	453332	5435467	3725
OSK-W-18-1367-W2	131	-52	1224	453753	5435875	4300
OSK-W-18-1414-W2	133	-58	1095	453654	5435648	4100
OSK-W-18-1429	138	-49	820	453533	5435606	3975
OSK-W-18-1436	139	-52	1128	453372	5435509	3775
OSK-W-18-1443	136	-50	792	453440	5435478	3825

OSK-W-17-1166-W4 intersected 11.1 g/t Au over 2.0 metres in Lynx 2. Mineralization is composed of up to 5% interstitial and stringer pyrite within a moderately sericitized felsic fragmental intrusion.

OSK-W-17-1343-W2 intersected two intervals: 3.59 g/t Au over 2.0 metres in Lynx 4 and 6.31 g/t Au over 3.0 metres in Lynx 6. The first interval is composed of 1% pyrite stringers within a sericitized rhyolite. The second interval is composed of up to 1% disseminated and stringer pyrite and quartz-carbonate veins within a strong chlorite, weak sericite altered rhyolite.

OSK-W-17-1396 intersected 5.80 g/t Au over 2.5 metres in the Lynx 4. Mineralization is composed of up to 1% pyrite in quartz veins at a chlorite and fuchsite altered contact between a gabbro and rhyolite.

OSK-W-17-1397 intersected three intervals: 3.35 g/t Au over 2.4 metres in Lynx HW, 28.0 g/t Au over 3.0 metres in Lynx 1 and 5.38 g/t Au over 2.0 metres in Lynx 2. The first interval is composed of stringer and disseminated pyrite and quartz veins within a strong sericite altered rhyolite. The second interval is composed of up to 3% disseminated pyrite and pyrite-silica flooding within a strong silica altered rhyolite. The last interval is composed of up to 2% pyrite in fragments or disseminated within a strong sericite, strong carbonate altered felsic fragmental dike.

OSK-W-18-923-W2 intersected two intervals in Lynx 4: 5.32 g/t Au over 2.2 metres and 10.1 g/t Au over 5.9 metres. In the first interval, mineralization is composed of 20% pyrite in quartz-tourmaline veins and disseminated within a fuchsite altered gabbro. The second interval is composed of 5% disseminated pyrite and 5% pyrite-silica flooding within a strongly sericitized rhyolite.

OSK-W-18-1169-W1 intersected 7.69 g/t Au over 2.0 metres in Lynx 4. Mineralization is composed of up to 5% pyrite stringers and 1% quartz-tourmaline veins within a strong silica, moderate sericite altered rhyolite.

OSK-W-18-1367-W2 intersected 80.0 g/t Au over 2.1 metres in Lynx 4. Mineralization is composed of 5% pyrite stringers and 1% quartz-tourmaline veins within a moderate sericite and chlorite altered felsic porphyritic dike.

OSK-W-18-1414-W2 intersected 5.38 g/t Au over 2.0 metres in Lynx 4. Mineralization is composed of 10% disseminated pyrite and 1% ptygmatic tourmaline veins at the contact of moderate silica and fuchsite altered gabbro.

OSK-W-18-1429 intersected 16.9 g/t Au over 2.1 metres in Lynx HW. Mineralization is composed of 5% pyrite stringers and 5% disseminated pyrite and local visible gold within strong silica, strong sericite and weak fuchsite altered gabbro.

OSK-W-18-1436 intersected three intervals in Lynx 4: 8.40 g/t Au over 2.0 metres, 48.0 g/t Au over 2.0 metres and 33.8 g/t Au over 5.0 metres. The first interval is composed of up to 5% pyrite-silica flooding with local visible gold within a strong silica altered rhyolite. The second interval is composed of up to 10% pyrite stringers, 5% pyrite-silica flooding and local visible gold within a strong silica altered rhyolite. The last interval is composed of 10% pyrite-silica flooding and local visible gold within a strong silica altered rhyolite.

OSK-W-18-1443 intersected 68.5 g/t Au over 2.9 metres in Lynx 4. The mineralization is composed of 15% pyrite-silica flooding and 15% disseminated pyrite within a moderate silica, sericite, carbonate and fuchsite altered gabbro.

For further information please contact:
John Burzynski. President and Chief Executive Officer
Telephone: (416) 363-8653

OSISKO INTERSECTS 40.8 g/t Au OVER 4.1 METRES AT WINDFALL

Posted on April 10, 2018November 8, 2023 by Yannick Fradette

Underdog FW4 Zone Continues to Expand

(Toronto April 10, 2018) Osisko Mining Inc. (OSK:TSX. “Osisko” or the “Corporation”) is pleased to provide new results from the ongoing drill program at its 100% owned Windfall Lake gold project located in the Abitibi greenstone belt, Urban Township, Eeyou Istchee James Bay, Québec. The 800,000 metre drill program combines definition, expansion and exploration drilling in and around the main Windfall gold deposit and the adjacent Lynx deposit (located immediately NE of Windfall).

Significant new analytical results from 31 intercepts in 14 drill holes and 6 wedges focused on infill and expansion drilling in the Main Windfall lake deposit are presented below.

Highlights from the new results include: 40.8 g/t Au over 4.1 metres in OSK-W-18-823-W2; 53.9 g/t Au over 2.9 metres in OSK-W-18-1402-W2; 36.1 g/t Au over 3.2 metres in OSK-W-18-1431 and 32.8 g/t Au over 2.3 metres in OSK-W-18-1435. Maps showing hole locations and full analytical results are available at www.osiskomining.com.

Hole Number	From (m)	To (m)	Interval (m)	Au (g/t) uncut	Au (g/t) cut to 100 g/t	Zone	Corridor
OSK-EAG-12-424	802.9	805.3	2.4	7.85		FW3	Underdog
including	804.7	805.3	0.6	28.5		FW3	Underdog
	815.5	818.0	2.5	10.0		FW3	Underdog
including	816.0	817.0	1.0	20.9		FW3	Underdog
OSK-W-16-706-W3	1027.0	1029.2	2.2	7.88		FW2	Underdog
including	1028.0	1028.7	0.7	20.3		FW2	Underdog
OSK-W-17-943	610.8	616.0	5.2	3.25		Wolf HW	Wolf
OSK-W-17-967	603.0	605.0	2.0	23.2	15.3	Caribou Ext.	Caribou
including	603.5	603.8	0.3	153	100	Caribou Ext.	Caribou
	655.8	660.3	4.5	10.2		Caribou Ext.	Caribou
including	658.1	658.5	0.4	45.8		Caribou Ext.	Caribou
OSK-W-17-1139	953.8	956.0	2.2	4.44		FW3	Underdog
OSK-W-17-1308-W1	997.0	999.0	2.0	7.27		Wolf	Wolf
OSK-W-17-1336-W1	1153.5	1161.0	7.5	6.12		FW3	Underdog
including	1157.0	1158.0	1.0	17.0		FW3	Underdog
OSK-W-17-1352	646.0	648.0	2.0	9.39		Caribou Ext.	Caribou
including	646.8	647.5	0.7	26.4		Caribou Ext.	Caribou
OSK-W-17-1368	236.0	238.0	2.0	3.77		Caribou Ext.	Caribou
	270.9	273.0	2.1	8.05		Caribou Ext.	Caribou
including	270.9	271.2	0.3	54.0		Caribou Ext.	Caribou
OSK-W-17-1369	212.0	218.3	6.3	5.67		Caribou	Caribou
OSK-W-17-1371	565.0	567.0	2.0	3.19		Caribou Ext.	Caribou
including	565.3	565.7	0.4	14.8		Caribou Ext.	Caribou
OSK-W-17-1378	695.0	697.0	2.0	4.03		Vein	Zone 27
including	696.0	696.4	0.4	16.8		Vein	Zone 27
	720.2	722.5	2.3	9.26		Vein
including	721.3	721.7	0.4	52.8		Vein
OSK-W-17-1402	1054.2	1059.2	5.0	5.38		FW3	Underdog
	1085.0	1087.0	2.0	4.09		FW3	Underdog
	1099.0	1101.0	2.0	4.99		FW3	Underdog
OSK-W-18-762-W1	1220.0	1222.0	2.0	11.1		FW4	Underdog
including	1221.0	1221.5	0.5	41.5		FW4	Underdog
OSK-W-18-823-W2	843.7	846.0	2.3	11.7		FW1	Underdog
including	845.0	845.3	0.3	80.5		FW1	Underdog
	858.4	862.5	4.1	40.8	29.3	FW1	Underdog
including	860.8	861.7	0.9	152	100	FW1	Underdog
OSK-W-18-1402-W1	853.0	855.0	2.0	3.52		FW1	Underdog
	859.1	862.0	2.9	53.9		FW1	Underdog
	1088.9	1091.5	2.6	6.63		FW3	Underdog
including	1090.3	1090.8	0.5	26.9		FW3	Underdog
	1150.6	1153.0	2.4	4.47		FW4	Underdog
including	1150.6	1151.1	0.5	12.8		FW4	Underdog
OSK-W-18-1421	872.6	875.8	3.2	36.1		FW4	Underdog
including	874.5	875.5	1.0	81.8		FW4	Underdog
OSK-W-18-1431	894.0	896.0	2.0	3.57		FW2	Underdog
including	894.8	895.2	0.4	17.6		FW2	Underdog
	922.3	925.1	2.8	13.5		FW3	Underdog
including	923.2	924.3	1.1	32.1		FW3	Underdog
OSK-W-18-1435	301.5	303.8	2.3	32.8	31.1	Bobcat	Bobcat
including	302.1	302.8	0.7	106	100	Bobcat	Bobcat
OSK-W-18-1441	304.0	306.8	2.8	3.41		Bobcat	Bobcat

Notes: True widths are estimated at 65 – 80% of the reported core length interval. See “Quality Control” below.
Definitions: HW = Hanging Wall, Ext = extension.

President and CEO John Burzynski commented: “Good results again from our drilling at Windfall as we look forward to our initial mineral resource estimate on schedule for delivery in May. Although today’s results are outside the cut-off date and won’t be included in the mineral resource calculation in mid-March, they will add to the upside potential of Windfall as we head towards the feasibility study in early 2019. Particularly encouraging is that we are still seeing expansion potential in all of the main zones at Windfall-Lynx underscored in today’s results with the extension of the Underdog FW4 Zone by 70 metres up plunge from the previous mineralized intercept.”

Hole Number	Azimuth (°)	Dip (°)	Length (m)	UTM E	UTM N	Section
OSK-EAG-12-424	330	-55	1003	452598	5434580	2650
OSK-W-16-706-W3	327	-57	1061	452611	5434418	2575
OSK-W-17-943	331	-55	744	452660	5434495	2675
OSK-W-17-967	337	-62	720	453176	5434908	3300
OSK-W-17-1139	333	-56	1092	452473	5434470	2500
OSK-W-17-1308-W1	332	-53	1032	453209	5434467	3125
OSK-W-17-1336-W1	335	-61	1335	452616	5434449	2600
OSK-W-17-1352	327	-50	909	453379	5434741	3400
OSK-W-17-1368	330	-64	762	452953	5434874	3100
OSK-W-17-1369	330	-49	786	452435	5434680	2550
OSK-W-17-1371	334	-69	981	453100	5434875	3225
OSK-W-17-1378	331	-56	741	452688	5434638	2750
OSK-W-17-1402	330	-59	1122	452616	5434449	2600
OSK-W-18-762-W1	332	-56	1299	452730	5434409	2675
OSK-W-18-823-W2	330	-56	918	452565	5434414	2550
OSK-W-18-1402-W1	330	-59	1224	452616	5434449	2600
OSK-W-18-1421	340	-47	918	452216	5434360	2200
OSK-W-18-1431	337	-62	1128	452287	5434336	2250
OSK-W-18-1435	331	-65	801	453028	5434848	3150
OSK-W-18-1441	328	-60	441	452886	5434912	3075

OSK-EAG-12-424 intersected two intervals in FW3: 7.85 g/t Au over 2.4 metres and 10.0 g/t Au over 2.5 metres. The first interval is composed of up to 2% disseminated pyrite and 1% pyrite stringers at the contact between a chloritized andesite and a sericitized porphyritic dike. The second interval contains up to 2% pyrite and pyrite-tourmaline stringers within a strongly sericitized andesite with moderate fuchsite alteration.

OSK-W-16-706-W3 intersected FW2 returning 7.88 g/t Au over 2.2 metres in the Underdog Corridor. Mineralization is composed of 8% pyrite stringers within a moderately silicified and sericitized felsic porphyritic dike with weak fuchsite alteration.

OSK-W-17-943 new assay results extend the previously reported result of 4.51 g/t Au over 2.0 metres (March 2, 2018) to 3.25 g/t Au over 5.2 metres in Wolf HW. Mineralization is composed of 5% pyrite stringers, 2% disseminate pyrite within a sericitized and strongly silicified felsic porphyritic dike.

OSK-W-17-967 intersected two intervals in Caribou Extension: 23.2 g/t Au over 2.0 metres and 10.2 g/t Au over 4.5 metres. The first interval is composed of 2% pyrite stringers and disseminated pyrite within a strong sericite, weak silica altered rhyolite. The second interval is composed of 2% pyrite stringers, disseminated pyrite and quartz-tourmaline veins within a sericitized felsic porphyritic dike.

OSK-W-17-1139 intersected 4.44 g/t Au over 2.2 metres in FW3. Mineralization is composed of up to 2% pyrite stringers hosted in a sericitized felsic porphyritic dike.

OSK-W-17-1308-W1 intersected 7.27g/t Au over 2.0 metres in Wolf. Mineralization is composed of trace pyrite stringers and disseminated in moderately chloritized and sericitized felsic porphyritic dike.

OSK-W-17-1336-W1 intersected 6.12 g/t Au over 7.5 metres in FW3. Mineralization is composed of up to 5% pyrite clusters, 1% pyrite stringers and a 20 centimetres zone with 15% ptygmatic tourmaline veins hosted in a sericitized and silicified felsic porphyritic dike.

OSK-W-17-1352 intersected 9.39 g/t Au over 2.0 metres in Caribou Extension. Mineralization is composed of up to 8% tourmaline-pyrite stringers at the contact between a gabbro and a felsic intrusive unit with weak fuchsite alteration.

OSK-W-17-1368 intersected 3.77 g/t Au over 2.0 metres and 8.05 g/t Au over 2.1 metres in Caribou Extension. The first interval is composed of trace pyrite in stringers and disseminated within a weak sericite and silica altered felsic porphyritic dike. The second interval is composed of 2% pyrite stringers, 5% pyrite-tourmaline stringers, 3% ptygmatic tourmaline veins within a sericitized and silicified rhyolite.

OSK-W-17-1369 intersected 5.67 g/t Au over 6.3 metres in Caribou. Mineralization is composed of up to 7% pyrite stringers and 10% disseminated pyrite in an alternation of mafic and felsic volcanic units.

OSK-W-17-1371 intersected 3.19 g/t Au over 2.0 metres in Caribou Extension. Mineralization is composed of disseminated pyrite and pyrite in quartz-tourmaline veins within a sericitized rhyolite.

OSK-W-17-1378 intersected 4.03 g/t Au over 2.0 metres in Zone 27 and 9.26 g/t Au over 2.3 metres in a vein. The first interval is composed of 5% pyrite within a felsic porphyritic dike. The second interval is composed of quartz-carbonate vein with local visible gold hosted in the Red Dog intrusion.

OSK-W-17-1402 intersected 5.38 g/t Au over 5.0 metres, 4.09 g/t Au over 2.0 metres and 4.99 g/t Au over 2.0 metres in FW3. All three mineralized intervals are composed of up to 1% pyrite-silica flooding and trace pyrite stringers within a sericitized felsic porphyritic dike.

OSK-W-18-762-W1 intersected 11.1 g /t Au over 2.0 metres in FW4. Mineralization is composed of 2% pyrite stringers, 1% pyrite-tourmaline stringers and 30 centimetres of strong pyrite silica flooding within a sericitized and silicified felsic porphyritic dike.

OSK-W-18-823-W2 intersected two intervals in FW1: 11.7 g/t Au over 2.3 metre and 40.8 g/t Au over 4.1 metres. The first interval is composed of a pyrite-tourmaline stringer with 20% pyrite and local visible gold. Mineralization is in strong pervasive silica flooding and calcite alteration within a sericitized felsic porphyritic dike. The second interval is composed of up 2% pyrite stringers, trace pyrite-tourmaline stringer, disseminated pyrite, chalcopyrite and local visible gold within a moderate sericite altered, fragmental, felsic porphyritic dike.

OSK-W-18-1402-W1 intersected four intervals: 3.52 g/t Au over 2.0 metres and 53.9 g/t Au over 2.9 metres in FW1, 6.63 g/t Au over 2.6 metres in FW3 and 4.47 g/t Au over 2.4 metres in FW4. In the first and second intervals, mineralization is composed of local visible gold, up to 15% pyrite and tourmaline ptygmatic veins within a strongly sericitized and silicified felsic porphyritic dike. The third interval is composed local visible gold, 2% pyrite stringers, 1% pyrite stockwork and 2% pyrite-silica flooding. FW3 mineralisation is hosted in sericitized and silicified felsic porphyritic dike. The last interval is composed of 5% disseminated pyrite and 3% pyrite in smoky quartz veins within a porphyritic felsic dike with weak sericite alteration and moderate silica alteration.

OSK-W-18-1421 intersected 36.1 g/t Au over 3.2 metres in FW4. Mineralization is composed of local visible gold and up to 20% pyrite stringers with pervasive silica flooding in a felsic fragmental intrusion. The interval extends FW4 70 metres up plunge of OSK-W-16-735 (33.6 g/t Au over 4.2 metres, previously reported November 8, 2016).

OSK-W-18-1431 intersected two intervals: 3.57 g/t Au over 2.0 metres in FW2 and 13.5 g/t Au over 2.8 metres FW3. The first interval is composed of up to 8% semi-massive pyrite and 1% pyrite clusters within in a moderately silicified felsic porphyritic dike. The second interval is composed of up to 30% semi-massive pyrite within a sericite and silica altered felsic porphyritic dike.

OSK-W-18-1435 intersected 32.8 g/t Au over 2.3 metres in Bobcat. Mineralization is composed of 15% disseminated pyrite, ptygmatic tourmaline veins and pervasive silica flooding within a silicified and sericitized felsic porphyritic dike.

OSK-W-17-1441 intersected 3.41 g/t Au over 2.8 metres in Bobcat. Mineralization is composed of up to 10% semi-massive pyrite, 3% pyrite-tourmaline stingers within a strongly sericitized rhyolite.

Qualified Person

The scientific and technical content of this news release has been reviewed, prepared and approved by Mr. Louis Grenier, M.Sc.A., P.Geo. (OGQ 800), Project Manager of the Windfall Lake gold project, who is a “Qualified Person” as defined by National Instrument 43-101 – Standards of Disclosure for Mineral Projects (“NI 43-101”).

Quality Control and Reporting Protocols

True widths determinations are estimated at 65-80% of the reported core length intervals for most of the zones. Assays are uncut except where indicated. Intercepts occur within geological confines of major zones but have not been correlated to individual vein domains at this time. Reported intervals include minimum weighted averages of 3.0 g/t Au diluted over core lengths of at least 2.0 metres. All NQ core assays reported were obtained by either 1-kilogram screen fire assay or standard 50-gram fire-assaying-AA finish or gravimetric finish at ALS Laboratories in Val d’Or, Québec, Thunder Bay and Sudbury, Ontario or Vancouver, British Colombia or Bureau Veritas in Timmins, Ontario. The 1-kilogram screen assay method is selected by the geologist when samples contain coarse gold or present a higher percentage of pyrite than surrounding intervals. Selected samples are also analyzed for multi-elements, including silver, using an Aqua Regia-ICP-AES method at ALS Laboratories. Drill program design, Quality Assurance/Quality Control (“QA/QC”) and interpretation of results is performed by qualified persons employing a QA/QC program consistent with NI 43-101 and industry best practices. Standards and blanks are included with every 20 samples for QA/QC purposes by the Corporation as well as the lab. Approximately 5% of sample pulps are sent to secondary laboratories for check assay.

About the Windfall Lake Gold Deposit

The Windfall Lake gold deposit is located between Val-d’Or and Chibougamau in the Abitibi region of Québec, Canada. The mineral resource defined by the previous operator comprises 2,762,000 tonnes at 8.42 g/t Au (748.000 ounces) in the indicated category and 3,512,000 tonnes at 7.62 g/t Au (860,000 ounces) in the inferred category (sourced from a technical report dated June 10, 2015 entitled “Preliminary Economic Assessment of the Windfall Lake Gold Property, Québec, Canada” with an effective date of April 28, 2015, prepared in accordance with NI 43-101). The Windfall Lake gold deposit is currently one of the highest grade resource-stage gold projects in Canada. The bulk of the mineralization occurs in the Main Zone, a southwest/northeast trending zone of stacked mineralized lenses, measuring approximately 600 metres wide and at least 1,400 metres long. The deposit is well defined from surface to a depth of 500 metres and remains open along strike and at depth. Mineralization has been identified only 30 metres from surface in some areas and as deep as 870 metres in others, with significant potential to extend mineralization up and down-plunge and at depth.

About Osisko Mining Inc.

Osisko is a mineral exploration company focused on the acquisition, exploration, and development of precious metal resource properties in Canada. Osisko holds a 100% in the high-grade Windfall Lake gold deposit located between Val-d’Or and Chibougamau in Québec and holds a 100% undivided interest in a large area of claims in the surrounding Urban Barry area and nearby Quevillon area (over 3,300 square kilometres), a 100% interest in the Marban project located in the heart of Québec’s prolific Abitibi gold mining district, and properties in the Larder Lake Mining Division in northeast Ontario, including the Jonpol and Garrcon deposits on the Garrison property, the Buffonta past producing mine and the Gold Pike mine property. The Corporation also holds interests and options in a number of additional properties in northern Quebec and Ontario. Osisko continues to be well financed with approximately $190 million in cash and investments as of December 31, 2017.

Cautionary Note Regarding Forward-Looking Information

This news release contains “forward-looking information” within the meaning of the applicable Canadian securities legislation that is based on expectations, estimates, projections and interpretations as at the date of this news release. The information in this news release about the Windfall Lake gold deposit being one of the highest grade resource-stage gold projects in Canada; the current 800,000 metre drill program; the significance of new results from the ongoing drill program at the Windfall Lake gold project; the significance of assay results presented in this press release; the type of drilling included in the drill program (definition drilling, expansion drilling to the NE of the main deposit and adjacent Lynx deposit, and exploration drilling on the greater deposit and Urban-Barry project area); potential mineralization; the potential to extend mineralization up and down-plunge and at depth at the Windfall Lake gold deposit; the ability to realize upon any mineralization in a manner that is economic; the ability to complete any proposed exploration activities and the results of such activities, including the continuity or extension of any mineralization; and any other information herein that is not a historical fact may be “forward-looking information”. Any statement that involves discussions with respect to predictions, expectations, interpretations, beliefs, plans, projections, objectives, assumptions, future events or performance (often but not always using phrases such as “expects”, or “does not expect”, “is expected”, “interpreted”, “management’s view”, “anticipates” or “does not anticipate”, “plans”, “budget”, “scheduled”, “forecasts”, “estimates”, “believes” or “intends” or variations of such words and phrases or stating that certain actions, events or results “may” or “could”, “would”, “might” or “will” be taken to occur or be achieved) are not statements of historical fact and may be forward-looking information and are intended to identify forward-looking information. This forward-looking information is based on reasonable assumptions and estimates of management of the Corporation. at the time it was made, involves known and unknown risks, uncertainties and other factors which may cause the actual results, performance or achievements of Osisko to be materially different from any future results, performance or achievements expressed or implied by such forward-looking information. Such factors include, among others, risks relating to the ability of exploration activities (including drill results) to accurately predict mineralization; errors in management’s geological modelling; the ability of Osisko to complete further exploration activities, including drilling; property interests in the Windfall Lake gold project; the ability of the Corporation to obtain required approvals and complete transactions on terms announced; the results of exploration activities; risks relating to mining activities; the global economic climate; metal prices; dilution; environmental risks; and community and non-governmental actions. Although the forward-looking information contained in this news release is based upon what management believes, or believed at the time, to be reasonable assumptions. Osisko cannot assure shareholders and prospective purchasers of securities of the Corporation that actual results will be consistent with such forward-looking information, as there may be other factors that cause results not to be as anticipated, estimated or intended, and neither Osisko nor any other person assumes responsibility for the accuracy and completeness of any such forward-looking information, Osisko does not undertake, and assumes no obligation, to update or revise any such forward-looking statements or forward-looking information contained herein to reflect new events or circumstances, except as may be required by law.

For further information please contact:
John Burzynski. President and Chief Executive Officer
Telephone: (416) 363-8653

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Author: Yannick Fradette