OSISKO WINDFALL DRILLING STEPS OUT INTO MORE … GOLD

Posted on January 11, 2021November 8, 2023 by Yannick Fradette

New Intercepts Include 344 g/t Au Over 2.2 Metres in Triple Lynx

(Toronto, January 11, 2021) Osisko Mining Inc. (OSK:TSX. “Osisko” or the “Corporation”) is pleased to provide new analytical results from the ongoing drill program at its 100% owned Windfall gold project located in the Abitibi greenstone belt, Urban Township, Eeyou Istchee James Bay, Québec.

Drilling is currently focused on the Lynx deposit. Osisko Chief Executive Officer John Burzynski commented: “Today’s new intersections are all from outside the published 2020 resource area and highlight the strong upside growth potential of our deposit. Step-out drilling remains focused on the open down plunge areas of known mineralized corridors in the Lynx area as well as some other high potential areas.”

The table below shows intercepts located outside the February 2020 mineral resource estimate wireframes (see Osisko news release dated February 19, 2020). These intercepts either expand the resource wireframes or are located in a defined zone/corridor but not yet correlated to a specific wireframe. Significant new analytical results are presented below and include 80 intercepts in 27 drill holes and 22 wedges.

Selected high-grade intercepts from the new results include: 344 g/t Au over 2.2 metres in OSK-W-20-2313-W2; 114 g/t Au over 2.6 metres in OSK-W-20-2280-W5; 90.2 g/t Au over 2.0 metres in WST-20-0380; 74.2 g/t Au over 2.2 metres in OSK-W-19-1949-W3; and 26.7 g/t Au over 7.0 metres in WST-20-0078. Maps showing hole locations and full analytical results are available at www.osiskomining.com

Expansion Drilling

Hole No.	From (m)	To (m)	Interval (m)	Au (g/t) uncut	Au (g/t) cut to 100 g/t	Zone	Corridor
OSK-W-19-1949-W3	737.4	739.6	2.2	74.2	47	Lynx	Lynx
including	737.4	737.8	0.4	133	100
and	737.8	738.3	0.5	194	100
OSK-W-20-2133-W4	946.6	951.7	5.1	3.47		Lynx_331	Lynx
	956.7	960.1	3.4	23.2		Lynx_331	Lynx
including	957.7	958.7	1.0	60.6		Lynx_331	Lynx
OSK-W-20-2139-W12	873.4	875.4	2.0	10.2		Triple Lynx	Triple Lynx
	998.0	1000.0	2.0	5.67		Triple Lynx	Triple Lynx
OSK-W-20-2170-W6	1367.8	1370.0	2.2	6.61		Lynx 4	Lynx
	1379.0	1381.0	2.0	14.5		Lynx 4	Lynx
OSK-W-19-2182	97.0	99.0	2.0	9.65		Lynx	Lynx
OSK-W-20-2251	1836.0	1838.0	2.0	21.0	20.3	Triple Lynx	Triple Lynx
including	1836.9	1837.3	0.4	104	100	Triple Lynx	Triple Lynx
	1908.6	1910.6	2.0	5.24		Triple Lynx	Triple Lynx
including	1908.6	1909.2	0.6	15.9		Triple Lynx	Triple Lynx
OSK-W-20-2251-W1	2112.0	2114.0	2.0	8.45		Lynx 4	Lynx
OSK-W-20-2252-W4	1059.0	1061.0	2.0	12.5		Triple Lynx	Triple Lynx
	1100.2	1104.9	4.7	6.74		Triple Lynx	Triple Lynx
including	1100.2	1100.6	0.4	22.7
and	1104.3	1104.9	0.6	33.2
	1109.4	1113.6	4.2	19.2		Triple Lynx	Triple Lynx
including	1111.0	1111.7	0.7	40.6		Triple Lynx	Triple Lynx
OSK-W-20-2252-W5	1017.7	1020.0	2.3	8.54		Triple Lynx	Triple Lynx
including	1018.5	1019.0	0.5	35.3		Triple Lynx	Triple Lynx
OSK-W-20-2256-W6	1051.0	1054.0	3.0	12.0		Triple Lynx	Triple Lynx
including	1052.1	1053.0	0.9	37.7		Triple Lynx	Triple Lynx
OSK-W-20-2264	814.8	821.8	7.0	11.7		Lynx 4	Lynx
including	816.3	816.8	0.5	31.4
and	818.8	819.6	0.8	57.5
	863.3	865.3	2.0	6.29		Lynx 4	Lynx
OSK-W-20-2271-W1	752.1	754.2	2.1	5.05		Lynx	Lynx
	784.3	786.5	2.2	4.38		Lynx	Lynx
	840.1	842.2	2.1	4.57		Lynx	Lynx
including	841.9	842.2	0.3	19.7		Lynx	Lynx
	1032.0	1034.0	2.0	26.3		Lynx 4	Lynx
including	1033.0	1033.5	0.5	97.5		Lynx 4	Lynx
	1049.0	1051.0	2.0	7.98		Lynx	Lynx
OSK-W-20-2271-W2	814.0	816.9	2.9	6.00		Lynx	Lynx
OSK-W-20-2280-W2	1059.8	1062.0	2.2	30.7		Triple Lynx	Triple Lynx
including	1060.8	1062.0	1.2	53.2		Triple Lynx	Triple Lynx
OSK-W-20-2280-W5	976.8	979.4	2.6	114	29.3	Lynx_368	Triple Lynx
including	976.8	977.5	0.7	416	100	Lynx_368	Triple Lynx
	1070.0	1074.0	4.0	22.0		Triple Lynx	Triple Lynx
including	1072.3	1073.2	0.9	52.3		Triple Lynx	Triple Lynx
OSK-W-20-2283-W2	945.0	947.0	2.0	15.7		Triple Lynx	Triple Lynx
including	946.0	947.0	1.0	31.1		Triple Lynx	Triple Lynx
OSK-W-20-2292-W1	559.2	561.5	2.3	11.6		Triple Lynx	Triple Lynx
	1014.6	1016.6	2.0	5.46		Triple Lynx	Triple Lynx
	1115.0	1117.0	2.0	4.39		Triple Lynx	Triple Lynx
	1122.6	1125.0	2.4	12.6		Triple Lynx	Triple Lynx
including	1123.8	1124.5	0.7	28.1		Triple Lynx	Triple Lynx
OSK-W-20-2292-W2	560.0	562.0	2.0	6.43		Triple Lynx	Triple Lynx
including	560.0	560.5	0.5	21.2		Triple Lynx	Triple Lynx
OSK-W-20-2295-W1	477.6	479.7	2.1	20.4		Lynx_365	Triple Lynx
including	477.9	478.5	0.6	69.8		Lynx_365	Triple Lynx
	805.0	807.0	2.0	17.5		Triple Lynx	Triple Lynx
including	805.5	806.4	0.9	36.3		Triple Lynx	Triple Lynx
OSK-W-20-2295-W2	477.0	479.1	2.1	3.60		Lynx_365	Triple Lynx
	826.2	828.2	2.0	13.0		Triple Lynx	Triple Lynx
including	827.6	828.2	0.6	38.3		Triple Lynx	Triple Lynx
OSK-W-20-2295-W3	689.0	691.0	2.0	7.23		Triple Lynx	Triple Lynx
including	689.5	690.0	0.5	27.4		Triple Lynx	Triple Lynx
OSK-W-20-2295-W4	757.0	759.3	2.3	4.08		Triple Lynx	Triple Lynx
including	757.0	757.5	0.5	10.1		Triple Lynx	Triple Lynx
	1026.0	1028.1	2.1	16.3		Triple Lynx	Triple Lynx
including	1027.6	1028.1	0.5	65.5		Triple Lynx	Triple Lynx
OSK-W-20-2313	864.0	870.0	6.0	5.58		Triple Lynx	Triple Lynx
including	864.0	864.6	0.6	23.8		Triple Lynx	Triple Lynx
	1035.4	1037.6	2.2	13.0		Triple Lynx	Triple Lynx
including	1036.4	1037.0	0.6	47.4		Triple Lynx	Triple Lynx
OSK-W-20-2313-W2	645.8	648.0	2.2	344	13.7	Triple Lynx	Triple Lynx
including	647.1	647.4	0.3	2520	100	Triple Lynx	Triple Lynx
OSK-W-20-2313-W3	849.7	852.0	2.3	12.9		Triple Lynx	Triple Lynx
including	850.2	850.5	0.3	98.8		Triple Lynx	Triple Lynx
OSK-W-20-2313-W6	730.0	732.0	2.0	4.13		Triple Lynx	Triple Lynx
OSK-W-20-2317	621.0	623.0	2.0	7.24		Triple Lynx	Triple Lynx
	662.0	664.2	2.2	3.81		Triple Lynx	Triple Lynx
including	663.7	664.2	0.5	13.1		Triple Lynx	Triple Lynx
	741.0	743.4	2.4	5.05		Triple Lynx	Triple Lynx
including	741.8	742.4	0.6	19.8		Triple Lynx	Triple Lynx
OSK-W-20-2319	514.0	516.7	2.7	19.1		Lynx	Lynx
including	514.0	514.4	0.4	88.7		Lynx	Lynx
	589.4	591.9	2.5	21.9	20.7	Lynx	Lynx
including	591.4	591.9	0.5	106	100	Lynx	Lynx
OSK-W-20-2328	525.0	527.0	2.0	6.68		Lynx SW	Lynx SW
including	525.0	526.0	1.0	13.1		Lynx SW	Lynx SW
	669.0	671.7	2.7	6.43		Lynx SW	Lynx SW
including	670.4	670.7	0.3	45.8		Lynx SW	Lynx SW
	859.5	861.5	2.0	9.69		Lynx 4	Lynx
including	860.4	861.0	0.6	31.1		Lynx 4	Lynx
OSK-W-20-2334	728.0	730.3	2.3	7.87		Lynx	Lynx
OSK-W-20-2339	933.0	935.0	2.0	5.27		Triple Lynx	Triple Lynx
	944.0	946.0	2.0	5.05		Triple Lynx	Triple Lynx
OSK-W-20-2351	699.0	701.0	2.0	9.84		Lynx_376	Triple Lynx
including	699.7	700.2	0.5	37.6		Lynx_376	Triple Lynx
OSK-W-20-2353	978.8	981.0	2.2	3.80		Triple Lynx	Triple Lynx
including	978.8	979.3	0.5	11.6		Triple Lynx	Triple Lynx
	1295.2	1297.3	2.1	4.49		Triple Lynx	Triple Lynx
OSK-W-20-2370	109.1	111.6	2.5	3.80		Lynx SW	Lynx SW
WST-20-0012D	305.6	308.0	2.4	4.47		Lynx SW	Lynx SW
	317.0	319.0	2.0	18.0		Lynx SW	Lynx SW
including	317.6	318.3	0.7	48.7		Lynx SW	Lynx SW
	394.5	396.5	2.0	6.59		Lynx SW	Lynx SW
including	395.3	395.9	0.6	21.4		Lynx SW	Lynx SW
WST-20-0078	263.4	270.4	7.0	26.7		Triple Lynx	Triple Lynx
	310.6	312.9	2.3	4.83		Triple Lynx	Triple Lynx
	417.0	419.1	2.1	3.46		Lynx SW	Lynx SW
WST-20-0330	383.8	386.1	2.3	5.00		Lynx SW	Lynx SW
including	385.2	385.6	0.4	28.6		Lynx SW	Lynx SW
WST-20-0380	14.0	16.0	2.0	90.2	50.2	Lynx	Lynx
including	15.0	16.0	1.0	180	100	Lynx	Lynx
WST-20-0401	141.0	143.0	2.0	4.33		Lynx_301	Lynx
WST-20-0425	59.0	61.7	2.7	3.73		Lynx	Lynx
WST-20-0475	155.0	157.6	2.6	16.6		Lynx_301	Lynx
including	155.7	156.3	0.6	65.6		Lynx_301	Lynx
WST-20-0482	38.0	40.4	2.4	4.25		Lynx	Lynx
WST-20-0485	44.2	46.4	2.2	3.97		Lynx_325	Lynx
WST-20-0489	277.0	279.0	2.0	6.36		Triple Lynx	Triple Lynx
WST-20-0516	106.0	108.0	2.0	5.56		Lynx	Lynx
WST-20-0523A	310.0	312.0	2.0	7.57		Lynx SW	Lynx SW
WST-20-0529	214.8	217.4	2.6	8.53		Lynx	Lynx
including	215.5	215.8	0.3	19.0		Lynx	Lynx
	227.9	230.1	2.2	8.48		Lynx	Lynx
including	227.9	228.4	0.5	28.0		Lynx	Lynx
WST-20-0541	116.1	118.2	2.1	8.87		Lynx_359	Lynx
including	116.1	116.7	0.6	30.4		Lynx_359	Lynx
WST-20-0546A	234.0	238.0	4.0	4.10		Lynx SW	Lynx SW
including	237.7	238.0	0.3	17.6		Lynx SW	Lynx SW

Notes: True widths are estimated at 55 – 80% of the reported core length interval. See “Quality Control and Reporting Protocols” below. SW = Southwest.

Drill hole location

Hole Number	Azimuth (°)	Dip (°)	Length (m)	UTM E	UTM N	Elevation	Section
OSK-W-19-1949-W3	105	-57	1326	453440	5435479	401	3825
OSK-W-20-2133-W4	118	-49	987	453080	5435531	417	3525
OSK-W-20-2139-W12	115	-52	1038	452980	5435549	420	3450
OSK-W-20-2170-W6	128	-59	1407	453425	5435657	413	3900
OSK-W-19-2182	132	-50	141	453505	5435428	399	3850
OSK-W-20-2251	96	-53	2053	453261	5435936	407	3900
OSK-W-20-2251-W1	96	-53	2278	453261	5435936	407	3900
OSK-W-20-2252-W4	129	-54	1143	453241	5435694	415	3750
OSK-W-20-2252-W5	129	-54	1092	453241	5435694	415	3750
OSK-W-20-2256-W6	125	-51	1157	453160	5435686	411	3675
OSK-W-20-2264	292	-74	1119	454127	5435062	396	4225
OSK-W-20-2271-W1	120	-53	1200	453462	5435683	410	3950
OSK-W-20-2271-W2	120	-53	1223	453462	5435683	410	3950
OSK-W-20-2280-W2	127	-58	1211	453304	5435639	415	3775
OSK-W-20-2280-W5	127	-58	1134	453304	5435639	415	3775
OSK-W-20-2283-W2	135	-50	1011	452997	5435607	425	3500
OSK-W-20-2292-W1	125	-54	1149	453035	5435561	420	3525
OSK-W-20-2292-W2	125	-54	1002	453035	5435561	420	3525
OSK-W-20-2295-W1	132	-51	960	452933	5435473	415	3375
OSK-W-20-2295-W2	132	-51	963	452933	5435473	415	3375
OSK-W-20-2295-W3	132	-51	969	452933	5435473	415	3375
OSK-W-20-2295-W4	132	-51	1082	452933	5435473	415	3375
OSK-W-20-2313	134	-52	1080	452965	5435583	420	3450
OSK-W-20-2313-W2	134	-52	1047	452965	5435583	420	3450
OSK-W-20-2313-W3	134	-52	1041	452965	5435583	420	3450
OSK-W-20-2313-W6	134	-52	1029	452965	5435583	420	3450
OSK-W-20-2317	129	-55	900	453026	5435407	412	3425
OSK-W-20-2319	141	-50	768	452872	5435153	409	3175
OSK-W-20-2328	136	-56	942	452872	5435153	409	3175
OSK-W-20-2334	125	-53	1166	453397	5435557	413	3825
OSK-W-20-2339	144	-50	1025	452961	5435441	414	3400
OSK-W-20-2351	141	-49	1107	452895	5435539	410	3375
OSK-W-20-2353	129	-50	1338	452732	5435570	405	3250
OSK-W-20-2370	351	-46	297	452721	5434747	397	2850
WST-20-0012D	174	-62	465	453226	5435126	134	3475
WST-20-0078	154	-62	525	453227	5435125	134	3475
WST-20-0330	183	-34	422	453226	5435125	135	3475
WST-20-0380	159	11	85	453228	5435126	136	3475
WST-20-0401	159	29	162	453493	5435287	119	3775
WST-20-0425	161	18	166	453358	5435208	156	3625
WST-20-0475	135	41	174	453494	5435287	120	3775
WST-20-0482	165	9	181	453449	5435264	117	3725
WST-20-0485	148	-44	181	453359	5435209	154	3625
WST-20-0489	174	-31	415	453256	5435209	96	3525
WST-20-0516	168	-33	195	453418	5435305	69	3725
WST-20-0523A	166	-46	387	453104	5435065	231	3325
WST-20-0529	305	-42	426	453414	5435310	69	3725
WST-20-0541	150	-28	138	453315	5435165	124	3575
WST-20-0546A	175	-51	484	453228	5435126	135	3475

Lynx Zone

Mineralization occurs as grey to translucent quartz-carbonate-pyrite-tourmaline veins and pyrite replacement zones and stockworks. The vein-type is associated with haloes of pervasive sericite-pyrite ± silica alteration and contain sulphides (predominantly pyrite with minor amounts of chalcopyrite, sphalerite, galena, arsenopyrite, and pyrrhotite) and local visible gold. Replacement mineralization is associated with strong pervasive silica-sericite-ankerite ± tourmaline alteration and contains disseminated pyrite from trace to 80% with local visible gold. Pyrite stockworks can form envelopes that reach several tens of metres thick. Fuchsite alteration is common and is spatially constrained to near the gabbros. Mineralization occurs at or near geological contacts between felsic porphyritic or fragmental intrusions and the host rhyolites or gabbros and locally can be hosted along the gabbro-rhyolite contact.

Triple Lynx

Mineralization in the Triple Lynx zone is vein-type, quartz-carbonate-pyrite-tourmaline veins, associated with pervasive sericite-pyrite ± silica alteration and contain sulphides similar to the main Lynx Zone, pyrite dominated with minor other sulphides, ranging from trace to up to 70% locally, and local visible gold. Locally fuchsite is present when proximal to the gabbros. Mineralization is hosted in or at the contacts of felsic porphyritic dikes with rhyolites (locally bleached) or gabbros.

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 Osisko’s 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

About the Windfall Gold Deposit

The Windfall gold deposit is located between Val-d’Or and Chibougamau in Eeyou Istchee James Bay, Québec, Canada. The mineral resource defined by Osisko, as disclosed in the news release dated February 19, 2020 and supported by the technical report entitled “An updated mineral resource estimate for the Windfall Lake Project, Located in the Abitibi Greenstone Belt, Urban Township, Eeyou Istchee James Bay, Québec, Canada” and dated April 3, 2020 (with an effective date of January 3, 2020), and assuming a cut-off grade of 3.5 g/t, comprises 4,127,000 tonnes at 9.1 g/t Au (1,206,000 ounces) in the indicated mineral resource category and 14,532,000 tonnes at 8.40 g/t Au (3,938,000 ounces) in the inferred mineral resource category. The key assumptions, parameters and methods used to estimate the mineral resource estimate disclosed in the February 19,2020 news release are further described in the full technical report prepared by Micon International Limited (“Micon”) and BBA Inc (“BBA”), in accordance with NI 43-101 available on SEDAR (www.sedar.com) under the Corporation’s issuer profile. The Windfall gold deposit is currently one of the highest-grade resource-stage gold projects in Canada and has world-class scale. Mineralization occurs in three principal zones:Lynx, Main Zone, and Underdog. Mineralization is generally comprised of deformed sub-vertical zones plunging to the northeast. Vein-type or pyrite replacement-type styles of mineralization crosscut syn-volcanic host rocks and syn-deformation felsic porphyry intrusions and are spatially associated with the contacts of the intrusions. The deposit is well defined from surface to a depth of 1,200 metres and remains open along strike and at depth.Mineralization has been identified 30 metres from surface in some areas and as deep as 2,000 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% interest in the high-grade Windfall gold deposit located between Val-d’Or and Chibougamau in Québec and holds a100% undivided interest in a large area of claims in the surrounding Urban Barry area and nearby Quévillon area (over 2,700 square kilometres).

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”, “potential”, “feasibility”, “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 Windfall gold deposit being one of the highest-grade resource-stage gold projects in Canada and having world-class scale; the key assumptions, parameters and methods used to estimate the mineral resource estimate; the prospects, if any, of the Windfall gold deposit; the timing and ability of Osisko, if at all, to publish a feasibility study for the Windfall gold deposit; the projected capital expenditures of mining activities at the Windfall gold deposit; upgrading an inferred mineral resource to a measured mineral resource or indicated mineral resource category; future drilling at the Windfall gold deposit; the deposit remaining open along strike to the northeast and at depth; significant high-grade zones (Lynx 4, Triple Lynx) remaining open down plunge; the plunge potential of the Lynx and Underdog zones; 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 and royalty interests in the Windfall gold deposit; the ability of the Corporation to obtain required approvals; 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
Chief Executive Officer
Telephone (416) 363-8653

OSISKO WINDFALL INFILL DRILLING: STILL GOOD

Posted on January 6, 2021November 8, 2023 by Yannick Fradette

New Intercepts Include 206 g/t Au over 2.0 Metres

(Toronto, January 6, 2021) Osisko Mining Inc. (OSK:TSX. “Osisko” or the “Corporation”) is pleased to provide new analytical results from the ongoing expansion and definition drill program at its 100% owned Windfall gold project located in the Abitibi greenstone belt, Urban Township, Eeyou Istchee James Bay, Québec.

Drilling is currently focused on the Lynx deposit, with the near-term objective of completion of the infill program in preparation for feasibility work. Osisko Chief Executive Officer John Burzynski commented: “We anticipate a busy year ahead as we maintain the steady drill pace of 2020 and work towards the completion of infilling our resource. The principal mineralized zones also remain open down plunge, and near deposit exploration is continuing to give encouraging results, which we believe will lead to new mineralized extensions and additions.”

The table below contains resource definition infill intercepts located inside the February 2020 mineral resource estimate wireframes (see Osisko news release dated February 19, 2020). Significant new analytical results are presented below and include 90 intercepts in 25 drill holes and 23 wedges.

Selected high-grade intercepts from the new results include: 206 g/t Au over 2.0 metres in WST-20-0581; 60.0 g/t Au over 2.0 metres in WST-20-0498; 52.9 g/t Au over 2.8 metres in WST-20-0513; 47.5 g/t Au over 2.2 metres in OSK-W-20-2334; 42.4 g/t Au over 2.3 metres in WST-20-0523A; 40.4 g/t Au over 3.6 metres in OSK-W-20-2133-W4. 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-W-20-2133-W4	798.8	802.4	3.6	40.4		Triple Lynx	Triple Lynx
including	799.2	800.2	1.0	73.3		Triple Lynx	Triple Lynx
OSK-W-20-2243-W6	804.7	806.8	2.1	9.02		Lynx_361	Triple Lynx
	851.4	854.8	3.4	23.5		Triple Lynx	Triple Lynx
including	853.1	853.9	0.8	68.9		Triple Lynx	Triple Lynx
OSK-W-20-2252-W7	842.6	849.0	6.4	6.93		Triple Lynx	Triple Lynx
including	844.8	845.1	0.3	41.7		Triple Lynx	Triple Lynx
	879.1	881.8	2.7	4.62		Lynx_371	Triple Lynx
including	879.4	879.7	0.3	16.0		Lynx_371	Triple Lynx
	885.0	889.0	4.0	4.70		Lynx_371	Triple Lynx
	893.9	896.7	2.8	5.67		Lynx_371	Triple Lynx
	919.7	923.0	3.3	4.45		Lynx_361	Triple Lynx
including	919.7	920.0	0.3	13.3		Lynx_361	Triple Lynx
OSK-W-20-2256-W4	1012.0	1014.0	2.0	14.6		Triple Lynx	Triple Lynx
OSK-W-20-2256-W6	868.8	872.6	3.8	24.4		Lynx_371	Triple Lynx
including	869.7	870.3	0.6	79.5		Lynx_371	Triple Lynx
	875.0	879.0	4.0	4.91		Lynx_371	Triple Lynx
	883.0	892.0	9.0	18.2		Lynx_361	Triple Lynx
including	887.6	888.3	0.7	57.6		Lynx_361	Triple Lynx
OSK-W-20-2256-W7	869.4	872.0	2.6	4.86		Lynx_361	Triple Lynx
	899.0	901.0	2.0	15.4		Triple Lynx	Triple Lynx
including	899.6	900.0	0.4	69.4		Triple Lynx	Triple Lynx
OSK-W-20-2264	782.2	790.0	7.8	10.5		Lynx_330	Lynx
including	786.9	787.6	0.7	38.4		Lynx_330	Lynx
OSK-W-20-2271-W1	847.5	849.5	2.0	4.50		Lynx	Lynx
OSK-W-20-2271-W2	1024.5	1026.9	2.4	32.1		Lynx_330	Lynx
including	1026.6	1026.9	0.3	90.1		Lynx_330	Lynx
	1064.0	1066.1	2.1	6.13		Lynx_334	Lynx
including	1065.2	1065.6	0.4	20.3		Lynx_334	Lynx
	1077.0	1079.0	2.0	5.15		Lynx_334	Lynx
OSK-W-20-2275-W3	899.0	901.0	2.0	10.8		Triple Lynx	Triple Lynx
including	900.3	900.7	0.4	43.3		Triple Lynx	Triple Lynx
OSK-W-20-2275-W4	635.0	637.1	2.1	7.18		Lynx_365	Triple Lynx
including	636.1	636.5	0.4	25.6		Lynx_365	Triple Lynx
	804.8	810.4	5.6	11.8		Triple Lynx	Triple Lynx
including	806.3	806.9	0.6	55.1		Triple Lynx	Triple Lynx
	835.0	837.0	2.0	11.1		Triple Lynx	Triple Lynx
including	835.6	836.0	0.4	54.7		Triple Lynx	Triple Lynx
	889.5	892.0	2.5	5.40		Triple Lynx	Triple Lynx
including	890.4	891.0	0.6	22.4		Triple Lynx	Triple Lynx
OSK-W-20-2280-W2	1102.7	1105.0	2.3	5.46		Lynx_370	Triple Lynx
including	1103.5	1104.0	0.5	20.9		Lynx_370	Triple Lynx
OSK-W-20-2280-W3	1099.2	1101.3	2.1	5.22		Triple Lynx	Triple Lynx
including	1101.0	1101.3	0.3	17.7		Triple Lynx	Triple Lynx
	1103.0	1108.9	5.9	4.92		Triple Lynx	Triple Lynx
including	1108.6	1108.9	0.3	18.2		Triple Lynx	Triple Lynx
	1112.9	1116.0	3.1	20.1		Lynx_370	Triple Lynx
including	1112.9	1113.5	0.6	77.8		Lynx_370	Triple Lynx
OSK-W-20-2280-W4	1040.0	1042.0	2.0	6.32		Triple Lynx	Triple Lynx
	1044.0	1046.0	2.0	4.83		Triple Lynx	Triple Lynx
including	1044.6	1044.9	0.3	24.6		Triple Lynx	Triple Lynx
	1072.9	1077.5	4.6	12.8		Triple Lynx	Triple Lynx
including	1075.5	1075.9	0.4	97.2		Triple Lynx	Triple Lynx
	1091.2	1098.0	6.8	3.96		Triple Lynx	Triple Lynx
	1100.7	1105.0	4.3	13.5	12.7	Lynx_364	Triple Lynx
including	1100.7	1101.0	0.3	112	100	Lynx_364	Triple Lynx
	1109.7	1114.0	4.3	16.9	15.7	Lynx_364	Triple Lynx
including	1109.7	1110.0	0.3	117	100	Lynx_364	Triple Lynx
OSK-W-20-2280-W5	1010.5	1016.0	5.5	3.61		Lynx_363	Triple Lynx
	1039.0	1041.0	2.0	22.4		Lynx_364	Triple Lynx
including	1039.5	1040.0	0.5	81.8		Lynx_364	Triple Lynx
	1046.0	1052.0	6.0	30.4	23.7	Lynx_364	Triple Lynx
including	1047.8	1049.0	1.2	129	95	Lynx_364	Triple Lynx
	1054.0	1059.9	5.9	14.7		Lynx_364	Triple Lynx
including	1059.2	1059.9	0.7	82.8		Lynx_364	Triple Lynx
	1093.0	1096.0	3.0	12.0		Triple Lynx	Triple Lynx
OSK-W-20-2283-W1	807.0	809.6	2.6	8.20		Triple Lynx	Triple Lynx
including	807.5	809.6	2.1	9.02		Triple Lynx	Triple Lynx
OSK-W-20-2283-W2	814.8	817.1	2.3	8.16		Triple Lynx	Triple Lynx
including	816.6	817.1	0.5	26.8		Triple Lynx	Triple Lynx
	832.7	835.0	2.3	6.13		Triple Lynx	Triple Lynx
	991.0	993.0	2.0	9.11		Triple Lynx	Triple Lynx
including	991.3	991.8	0.5	35.7		Triple Lynx	Triple Lynx
OSK-W-20-2283-W6	831.6	836.0	4.4	17.6		Lynx_361	Triple Lynx
including	833.3	834.6	1.3	40.6		Lynx_361	Triple Lynx
OSK-W-20-2292-W4	892.0	894.9	2.9	4.02		Lynx_375	Triple Lynx
including	893.1	893.8	0.7	10.3		Lynx_375	Triple Lynx
OSK-W-20-2295-W2	679.7	682.0	2.3	24.7	17.4	Triple Lynx	Triple Lynx
including	681.7	682.0	0.3	157	100	Triple Lynx	Triple Lynx
OSK-W-20-2295-W3	660.3	662.3	2.0	3.89		Triple Lynx	Triple Lynx
OSK-W-20-2295-W4	670.1	673.1	3.0	5.99		Triple Lynx	Triple Lynx
including	670.1	670.6	0.5	16.6		Triple Lynx	Triple Lynx
	698.0	700.1	2.1	4.33		Triple Lynx	Triple Lynx
including	699.8	700.1	0.3	23.7		Triple Lynx	Triple Lynx
	757.0	759.3	2.3	4.08		Triple Lynx	Triple Lynx
including	757.0	757.5	0.5	10.1		Triple Lynx	Triple Lynx
	822.5	824.5	2.0	3.90		Triple Lynx	Triple Lynx
including	823.5	824.0	0.5	14.1		Triple Lynx	Triple Lynx
	841.0	843.0	2.0	5.77		Triple Lynx	Triple Lynx
including	841.4	841.7	0.3	31.5		Triple Lynx	Triple Lynx
OSK-W-20-2313-W5	819.9	822.0	2.1	7.49		Lynx_376	Triple Lynx
OSK-W-20-2322-W1	1119.8	1124.6	4.8	7.20		Lynx_330	Lynx
including	1120.5	1121.2	0.7	13.8		Lynx_330	Lynx
OSK-W-20-2334	1007.1	1009.3	2.2	47.5	41.7	Lynx_330	Lynx
including	1008.0	1008.4	0.4	132	100	Lynx_330	Lynx
OSK-W-20-2367	59.0	62.0	3.0	6.38		Lynx_335	Lynx SW
WST-20-0406	130.2	132.4	2.2	3.26		Lynx_322	Lynx
WST-20-0486	57.5	63.7	6.2	15.1		Lynx_303	Lynx
including	58.5	59.0	0.5	47.1
and	59.7	60.1	0.4	46.1
	114.0	116.0	2.0	10.5		Lynx_304	Lynx
including	115.4	116.0	0.6	27.6		Lynx_304	Lynx
WST-20-0498	123.5	125.7	2.2	3.84		Lynx_304	Lynx
	132.5	134.5	2.0	60.0	41.3	Lynx_304	Lynx
including	133.8	134.5	0.7	154	100	Lynx_304	Lynx
WST-20-0502	73.4	76.0	2.6	4.73		Lynx_311	Lynx
WST-20-0503	57.9	59.9	2.0	18.6		Lynx_311	Lynx
including	57.9	58.7	0.8	46.1		Lynx_311	Lynx
WST-20-0505A	84.5	87.0	2.5	9.07		Lynx_307	Lynx
including	84.5	84.8	0.3	72.4		Lynx_307	Lynx
	233.5	236.0	2.5	3.00		Lynx SW	Lynx SW
WST-20-0506	123.2	125.5	2.3	7.83		Lynx_304	Lynx
including	123.9	124.7	0.8	22.4		Lynx_304	Lynx
WST-20-0509	94.4	96.5	2.1	4.24		Lynx_304	Lynx
including	94.4	94.7	0.3	13.9		Lynx_304	Lynx
WST-20-0512	48.2	50.2	2.0	8.84		Lynx_303	Lynx
including	49.3	49.9	0.6	29.1		Lynx_303	Lynx
	54.0	56.0	2.0	21.1		Lynx_311	Lynx
including	54.9	55.4	0.5	83.8		Lynx_311	Lynx
WST-20-0513	138.0	140.8	2.8	52.9	44.5	Lynx_323	Lynx
including	139.0	139.9	0.9	126	100	Lynx_323	Lynx
	151.8	154.0	2.2	3.67		Lynx_304	Lynx
WST-20-0514	141.0	143.0	2.0	20.9		Lynx_323	Lynx
including	141.0	142.0	1.0	32.5		Lynx_323	Lynx
WST-20-0523A	67.2	69.4	2.2	14.8		Lynx_311	Lynx
including	67.7	68.4	0.7	44.8		Lynx_311	Lynx
	72.0	74.3	2.3	42.4		Lynx_311	Lynx
including	73.5	74.3	0.8	90.4		Lynx_311	Lynx
WST-20-0525	142.0	144.0	2.0	13.3		Lynx_323	Lynx
including	142.0	143.0	1.0	26.4		Lynx_323	Lynx
WST-20-0537	84.9	87.1	2.2	6.49		Lynx	Lynx
including	86.4	87.1	0.7	16.1		Lynx	Lynx
WST-20-0538	105.0	107.2	2.2	15.0		Lynx_304	Lynx
including	105.3	105.8	0.5	64.4		Lynx_304	Lynx
	117.0	120.0	3.0	4.15		Lynx	Lynx
WST-20-0539	45.9	48.2	2.3	6.89		Lynx_303	Lynx
	96.6	98.6	2.0	20.6		Lynx_304	Lynx
including	97.0	97.5	0.5	80.2		Lynx_304	Lynx
WST-20-0540	51.3	53.5	2.2	3.12		Lynx_303	Lynx
	111.0	113.2	2.2	7.86		Lynx_304	Lynx
including	111.0	111.3	0.3	47.2		Lynx_304	Lynx
WST-20-0541	45.8	48.1	2.3	10.0		Lynx_303	Lynx
including	46.4	47.2	0.8	25.6		Lynx_303	Lynx
	60.1	62.3	2.2	13.8		Lynx	Lynx
including	60.9	61.7	0.8	34.3		Lynx	Lynx
	98.0	100.0	2.0	15.7		Lynx_304	Lynx
including	99.0	99.5	0.5	36.3		Lynx_304	Lynx
WST-20-0544	52.7	55.5	2.8	72.0	55.8	Lynx_303	Lynx
including	52.7	54.1	1.4	132	100	Lynx_303	Lynx
WST-20-0563	129.4	131.5	2.1	4.72		Lynx_365	Triple Lynx
including	129.4	130.0	0.6	15.1		Lynx_365	Triple Lynx
WST-20-0579	58.0	60.5	2.5	5.62		Lynx_303	Lynx
WST-20-0581	268.4	274.0	5.6	4.56		Lynx SW	Lynx SW
	283.0	285.0	2.0	206	45.4	Lynx SW	Lynx SW
including	283.0	283.9	0.9	458	100	Lynx SW	Lynx SW

Notes: True widths are estimated at 55 – 80% of the reported core length interval. See “Quality Control and Reporting Protocols” below.

Drill hole location

Hole Number	Azimuth (°)	Dip (°)	Length (m)	UTM E	UTM N	Elevation	Section
OSK-W-20-2133-W4	118	-49	987	453080	5435531	417	3525
OSK-W-20-2243-W6	122	-54	965	453086	5435526	417	3550
OSK-W-20-2252-W7	129	-54	1191	453241	5435694	415	3750
OSK-W-20-2256-W4	125	-51	1122	453160	5435686	411	3675
OSK-W-20-2256-W6	125	-51	1157	453160	5435686	411	3675
OSK-W-20-2256-W7	125	-51	1005	453160	5435686	411	3675
OSK-W-20-2264	292	-74	1119	454127	5435062	396	4225
OSK-W-20-2271-W1	120	-53	1200	453462	5435683	410	3950
OSK-W-20-2271-W2	120	-53	1223	453462	5435683	410	3950
OSK-W-20-2275-W3	127	-49	1050	452888	5435583	409	3400
OSK-W-20-2275-W4	127	-49	1052	452888	5435583	409	3400
OSK-W-20-2280-W2	127	-58	1211	453304	5435639	415	3775
OSK-W-20-2280-W3	127	-58	1191	453304	5435639	415	3775
OSK-W-20-2280-W4	127	-58	1215	453304	5435639	415	3775
OSK-W-20-2280-W5	127	-58	1134	453304	5435639	415	3775
OSK-W-20-2283-W1	135	-50	1035	452997	5435607	425	3500
OSK-W-20-2283-W2	135	-50	1011	452997	5435607	425	3500
OSK-W-20-2283-W6	135	-50	957	452997	5435607	425	3500
OSK-W-20-2292-W4	125	-54	984	453035	5435561	420	3525
OSK-W-20-2295-W2	132	-51	963	452933	5435473	415	3375
OSK-W-20-2295-W3	132	-51	969	452933	5435473	415	3375
OSK-W-20-2295-W4	132	-51	1082	452933	5435473	415	3375
OSK-W-20-2313-W5	134	-52	1086	452965	5435583	420	3450
OSK-W-20-2322-W1	130	-54	1233	453608	5435715	403	4075
OSK-W-20-2334	125	-53	1166	453397	5435557	413	3825
OSK-W-20-2367	349	-46	279	452742	5434761	398	2875
WST-20-0406	135	-8	202	453494	5435287	117	3775
WST-20-0486	130	-37	162	453359	5435209	154	3625
WST-20-0498	132	-11	169	453228	5435126	136	3475
WST-20-0502	144	-40	115	453105	5435065	231	3325
WST-20-0503	148	6	99	453105	5435065	232	3325
WST-20-0505A	183	-45	331	453227	5435125	134	3475
WST-20-0506	175	20	141	453357	5435208	156	3625
WST-20-0509	126	-20	148	453316	5435166	124	3575
WST-20-0512	159	-10	139	453315	5435164	125	3575
WST-20-0513	147	-25	184	453418	5435305	69	3725
WST-20-0514	154	-26	181	453418	5435305	69	3725
WST-20-0523A	166	-46	387	453104	5435065	231	3325
WST-20-0525	165	-20	187	453418	5435305	69	3725
WST-20-0537	132	-32	139	453316	5435166	124	3575
WST-20-0538	130	-37	142	453316	5435166	124	3575
WST-20-0539	122	-29	139	453316	5435166	124	3575
WST-20-0540	129	-42	147	453316	5435166	124	3575
WST-20-0541	150	-28	138	453315	5435165	124	3575
WST-20-0544	144	-43	144	453315	5435165	124	3575
WST-20-0563	324	-40	248	453255	5435214	96	3525
WST-20-0579	162	-38	144	453315	5435165	124	3575
WST-20-0581	181	-60	474	453177	5435126	173	3425

Lynx Zone

Triple Lynx

Qualified Person

Quality Control and Reporting Protocols

About the Windfall Gold Deposit

The Windfall gold deposit is located between Val-d’Or and Chibougamau in Eeyou Istchee James Bay, Québec, Canada. The mineral resource defined by Osisko, as disclosed in the news release dated February 19, 2020 and supported by the technical report entitled “An updated mineral resource estimate for the Windfall Lake Project, Located in the Abitibi Greenstone Belt, Urban Township, Eeyou Istchee James Bay, Québec, Canada” and dated April 3, 2020 (with an effective date of January 3, 2020), and assuming a cut-off grade of 3.5 g/t, comprises 4,127,000 tonnes at 9.1 g/t Au (1,206,000 ounces) in the indicated mineral resource category and 14,532,000 tonnes at 8.40 g/t Au (3,938,000 ounces) in the inferred mineral resource category. The key assumptions, parameters and methods used to estimate the mineral resource estimate disclosed in the February 19,2020 news release are further described in the full technical report prepared by Micon International Limited (“Micon”) and BBA Inc (“BBA”), in accordance with NI 43-101 available on SEDAR (www.sedar.com) under the Corporation’s issuer profile. The Windfall gold deposit is currently one of the highest-grade resource-stage gold projects in Canada and has world-class scale. Mineralization occurs in three principal zones: Lynx, Main Zone, and Underdog. Mineralization is generally comprised of deformed sub-vertical zones plunging to the northeast. Vein-type or pyrite replacement-type styles of mineralization crosscut syn-volcanic host rocks and syn-deformation felsic porphyry intrusions and are spatially associated with the contacts of the intrusions. The deposit is well defined from surface to a depth of 1,200 metres and remains open along strike and at depth. Mineralization has been identified 30 metres from surface in some areas and as deep as 2,000 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% interest in the high-grade Windfall 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 2,700 square kilometres).

Cautionary Note Regarding Forward-Looking Information

CONTACT INFORMATION:

John Burzynski
Chief Executive Officer
Telephone (416) 363-8653

OSISKO WINDFALL INFILL DRILL PROGRAM 2020 TOP 20 HIT PARADE

Posted on December 3, 2020November 8, 2023 by Yannick Fradette

(Toronto, December 3, 2020) Osisko Mining Inc. (OSK:TSX. “Osisko” or the “Corporation”) is pleased to provide a recap of the top 20 previously released intercepts of 2020 from its 100% owned Windfall gold project located in the Abitibi greenstone belt, Urban Township, Eeyou Istchee James Bay, Québec.

Since the release of the February 2020 mineral resource estimate (see Osisko news release dated February 19, 2020), approximately 250,000 metres of new drilling has been completed, focused on infill and expansion drilling of the known mineralized zones at Windfall.

Osisko Chief Executive Officer John Burzynski commented: “It has been a very busy year for the Osisko exploration team, complicated by global events. The Corporation has managed to maintain a steady pace at Windfall, significantly growing the deposit with the resource update released in February, and we expect this year’s program to further grow the deposit. Our exploration team successfully completed the Discovery One drill hole, providing solid extensions to the Underdog and Triple 8 zones, while providing strong indications for further discovery at depth in the deposit. The pace of drilling has increased throughout the year, with over 30 surface and underground drills on site to complete the infill program and explore extensions of the principal mineralized zones, all of which remain open down plunge. The exploration ramp has continued to advance towards Triple Lynx for the next planned bulk sample, and at present we have eight underground rigs on the Lynx infill program. Drilling began in November on promising near-deposit exploration targets with three additional drills, and we expect to be shifting more rigs to these targets in the New Year. Our cash balance remains very strong, with approximately $300M in cash and equity positions.”

“Osisko recognizes the essential contribution of our employees and contractors, and we wish to thank our hosts and partners in the community of Waswanipi, the Cree Nation government, the municipality of Lebel-sur-Quevillon, the Quebec government and all of our stakeholders for their strong support through what has been an unusual year. Our achievements and success are attributable to our working relationship with our partners, and the dedication and commitment of our employees to maintaining a safe work environment.”

Osisko anticipates a busy 2021, steadily working towards the delivery of the next resource update and advancing the feasibility work for the Windfall project.

The table below presents the previously released 2020 top 20 drill intercepts from Lynx.

WINDFALL TOP 20 INTERCEPTS BY METAL FACTOR

Hole No.	From (m)	To (m)	Interval (m)	Au (g/t) uncut	*gmetres uncut**	Zone
WST-20-0543	74.0	76.0	2.0	13,634	27,268	Lynx_323
OSK-W-19-1731-W2	882.7	887.3	4.6	1,475	6,785	Lynx_348
OSK-W-20-2059-W4	1038.1	1066.1	28.0	202	5,643	Lynx_348
OSK-W-19-2226	55.7	58.1	2.4	948	2,275	Lynx_311
OSK-W-20-2256-W5	858.5	873.0	14.5	86	1,250	Lynx_361
WST-20-0312	105.0	110.0	5.0	199	993	Lynx_304
OSK-W-20-2260-W1	843.0	846.0	3.0	314	941	Lynx_361
OSK-W-20-2133-W2	783.6	786	2.4	391	939	Lynx_361
OSK-W-20-2264	766.5	778.8	12.3	76	931	Lynx_334
OSK-W-20-2133-W4	928.8	939.6	10.8	85	918	Triple Lynx
OSK-W-20-2292-W1	1040.7	1043.0	2.3	395	909	Lynx_374
OSK-W-20-2170-W2	971	976.6	5.6	149	835	Lynx_363
OSK-W-20-2100-W7	933.0	935.0	2.0	415	830	Lynx_361
WST-20-0310	63.7	65.7	2.0	376	751	Lynx_311
WST-20-0569	310.5	312.7	2.2	327	719	Lynx_356
WST-20-0295	142.0	144.0	2.0	337	675	Lynx_304
OSK-W-20-2256-W2	874.7	880.3	5.6	115	642	Lynx_361
OSK-W-20-2256-W4	862.0	871.2	9.2	62	566	Lynx_361
WST-19-0234	69.2	72.6	3.4	153	520	Lynx_311
WST-20-0295	134.0	136.0	2.0	243	485	Lynx_304

Qualified Person

Quality Control and Reporting Protocols

True width determination is estimated at 55-80% of the reported core length interval for the zone. 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, present a higher percentage of pyrite than surrounding intervals or any samples exceeding 10 g/t Au. A 1-kilogram split is passed through a 75-um stainless steel screen to separate the oversize fraction. Any +75-μm material remaining on the screen is retained and analyzed in its entirety by fire assay with gravimetric finish and reported as the Au (+) fraction results. The 75μm fraction is homogenized and two 50-gram sub-samples are analyzed by fire assay with Atomic absorption finish. The average of the two atomic absorption finish is taken and reported as the Au (-) fraction result. As of August 7, 2019, the -75μm fractions have been analyzed using gravimetric finish. All three values are used in calculating the combined gold content of the plus and minus fractions. Selected samples are also analyzed for multi-elements, including silver, using a four acids digestion -MS61 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 Gold Deposit

The Windfall gold deposit is located between Val-d’Or and Chibougamau in Eeyou Istchee James Bay, Québec, Canada. The mineral resource defined by Osisko, as disclosed in the news release dated February 19, 2020 and supported by the technical report entitled “An updated mineral resource estimate for the Windfall Lake Project, Located in the Abitibi Greenstone Belt, Urban Township, Eeyou Istchee James Bay, Québec, Canada” and dated April 3, 2020 (with an effective date of January 3, 2020), and assuming a cut-off grade of 3.5 g/t, comprises 4,127,000 tonnes at 9.1 g/t Au (1,206,000 ounces) in the indicated mineral resource category and 14,532,000 tonnes at 8.40 g/t Au (3,938,000 ounces) in the inferred mineral resource category. The key assumptions, parameters and methods used to estimate the mineral resource estimate disclosed in the February 19,2020 news release are further described in the full technical report prepared by Micon International Limited (“Micon”) and BBA Inc (“BBA”), in accordance with NI 43-101 available on SEDAR (www.sedar.com) under the Corporation’s issuer profile. The Windfall gold deposit is currently one of the highest-grade resource-stage gold projects in Canada and has world-class scale. Mineralization occurs in three principal zones: Lynx, Main Zone, and Underdog. Mineralization is generally comprised of deformed sub-vertical zones plunging to the northeast. Vein-type or pyrite replacement-type styles of mineralization crosscut syn-volcanic host rocks and syn-deformation felsic porphyry intrusions and are spatially associated with the contacts of the intrusions. The deposit is well defined from surface to a depth of 1,200 metres and remains open along strike and at depth. Mineralization has been identified 30 metres from surface in some areas and as deep as 2,000 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% interest in the high-grade Windfall 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 2,700 square kilometres).

Cautionary Note Regarding Forward-Looking Information

CONTACT INFORMATION:

John Burzynski
Chief Executive Officer
Telephone (416) 363-8653

OSISKO WINDFALL INFILL DRILLING: VERY GOOD

Posted on December 1, 2020November 8, 2023 by Yannick Fradette

Record Intercept of 13,634 g/t Au over 2.0 Metres

(Toronto, December 1, 2020) Osisko Mining Inc. (OSK:TSX. “Osisko” or the “Corporation”) is pleased to provide new analytical results from the ongoing expansion and definition drill program at its 100% owned Windfall gold project located in the Abitibi greenstone belt, Urban Township, Eeyou Istchee James Bay, Québec.

Infill drilling at Lynx has returned the highest-grade result at Windfall to date of 13,634 g/t Au over 2.0 metres including 90,700 g/t Au over 0.3 metres in hole WST-20-0543. This infill hole from the definition program is located 70 metres down plunge from WST-20-0310 (376 g/t Au over 2.0 metres, see Osisko news release dated June 23, 2020) and confirms the continuity of the Lynx 323 wireframe.

Osisko Chief Executive Officer John Burzynski commented: “Today’s spectacular result, certainly one the highest gold grades in terms of metal factor (grade x width) ever reported, continues to demonstrate the exceptional high-grade characteristics of Lynx. Our infill drilling program continues to show the strength of our deposit, and is confirming both the continuity and high-grade nature of Windfall. We encourage people to go to our social media page or website and view some of the recent photos of the spectacular visible gold in this sample and other recent drill core coming from the ongoing work at Windfall.”

Hole No.	From (m)	To (m)	Interval (m)	Au (g/t) uncut	Au (g/t) cut to 100 g/t	Zone	Corridor
WST-20-0543	74.0	76.0	2.0	13,634	30.0	Lynx	Lynx_323
including	74.3	74.6	0.3	90,700	100	Lynx	Lynx_323

Drill hole location

Hole Number	Azimuth (°)	Dip (°)	Length (m)	UTM E	UTM N	Elevation	Section
WST-20-0543	150	-40	144	453315	5435165	123	3575

WST-20-0543 intersected 13,634 g/t Au over 2.0 metres. Mineralization consists of up to 15% local visible gold and up to 5% disseminated pyrite hosted in an intensely silica flooded, sericitized, and strongly fuchsite altered gabbro.

Lynx Zone

Mineralization typically occurs as grey to translucent quartz-carbonate-pyrite-tourmaline veins and pyrite replacement zones and stockworks. The vein-type is associated with haloes of pervasive sericite-pyrite ± silica alteration and contain sulphides (predominantly pyrite with occasional minor amounts of chalcopyrite, sphalerite, galena, arsenopyrite, and pyrrhotite) and local visible gold. Replacement mineralization is associated with strong pervasive silica-sericite-ankerite ± tourmaline alteration and contains disseminated pyrite from trace to 80% with local visible gold. Pyrite stockworks can form envelopes that reach several tens of metres thick. Fuchsite alteration is common and is spatially constrained to near the gabbros. Mineralization occurs at or near geological contacts between felsic porphyritic or fragmental intrusions and the host rhyolites or gabbros and locally can be hosted along the gabbro-rhyolite contact.

Qualified Person

Quality Control and Reporting Protocols

About the Windfall Gold Deposit

The Windfall gold deposit is located between Val-d’Or and Chibougamau in Eeyou Istchee James Bay, Québec, Canada. The mineral resource defined by Osisko, as disclosed in the news release dated February 19, 2020 and supported by the technical report entitled “An updated mineral resource estimate for the Windfall Lake Project, Located in the Abitibi Greenstone Belt, Urban Township, Eeyou Istchee James Bay, Québec, Canada” and dated April 3, 2020 (with an effective date of January 3, 2020), and assuming a cut-off grade of 3.5 g/t, comprises 4,127,000 tonnes at 9.1 g/t Au (1,206,000 ounces) in the indicated mineral resource category and 14,532,000 tonnes at 8.40 g/t Au (3,938,000 ounces) in the inferred mineral resource category. The key assumptions, parameters and methods used to estimate the mineral resource estimate disclosed in the February 19,2020 news release are further described in the full technical report prepared by Micon International Limited (“Micon”) and BBA Inc (“BBA”), in accordance with NI 43-101 available on SEDAR (www.sedar.com) under the Corporation’s issuer profile. The Windfall gold deposit is currently one of the highest-grade resource-stage gold projects in Canada and has world-class scale. Mineralization occurs in three principal zones: Lynx, Main Zone, and Underdog. Mineralization is generally comprised of deformed sub-vertical zones plunging to the northeast. Vein-type or pyrite replacement-type styles of mineralization crosscut syn-volcanic host rocks and syn-deformation felsic porphyry intrusions and are spatially associated with the contacts of the intrusions. The deposit is well defined from surface to a depth of 1,200 metres and remains open along strike and at depth. Mineralization has been identified 30 metres from surface in some areas and as deep as 2,000 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% interest in the high-grade Windfall 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 2,700 square kilometres).

Cautionary Note Regarding Forward-Looking Information

CONTACT INFORMATION:

John Burzynski
Chief Executive Officer
Telephone (416) 363-8653

OSISKO INFILL DRILLING WINDFALL. GOOD.

Posted on November 24, 2020November 8, 2023 by Yannick Fradette

Results Include 86.2 g/t Au over 14.5 Metres and 327 g/t Au over 2.2 Metres

(Toronto, November 24, 2020) Osisko Mining Inc. (OSK:TSX. “Osisko” or the “Corporation”) is pleased to provide new analytical results from the ongoing expansion and definition drill program at its 100% owned Windfall gold project located in the Abitibi greenstone belt, Urban Township, Eeyou Istchee James Bay, Québec.

Drilling is currently focused on the Lynx deposit. Osisko Chief Executive Officer John Burzynski commented: “We remain very pleased with Lynx’s consistent good results on grade and widths.”

Selected high-grade intercepts from the new results include: 86.2 g/t Au over 14.5 metres in OSK-W-2256-W5; 327 g/t Au over 2.2 metres in WST-20-0569; 85.0 g/t Au over 10.8 metres in OSK-W-20-2133-W4; 94.9 g/t Au over 2.1 metres in WST-20-0508; and 71.3 g/t Au over 4.0 metres in OSK-W-2252-W5. 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-W-20-2133-W4	928.8	939.6	10.8	85.0	22.7	Lynx_331	Triple Lynx
including	931.0	933.1	2.1	420	100	Lynx_331	Triple Lynx
OSK-W-20-2252-W5	854.7	856.9	2.2	18.6		Lynx_371	Triple Lynx
including	855.6	856.0	0.4	97.3		Lynx_371	Triple Lynx
	882.3	886.3	4.0	71.3	43.8	Lynx_371	Triple Lynx
including	884.1	884.6	0.5	234	100
and	885.9	886.3	0.4	375	100
OSK-W-20-2252-W7	943.6	950.1	6.5	36.0	25.8	Lynx_368	Triple Lynx
including	943.9	945.2	1.3	151	100	Lynx_368	Triple Lynx
OSK-W-20-2256-W5	858.5	873.0	14.5	86.2	16.4	Lynx_361	Triple Lynx
including	868.1	868.4	0.3	230	100
and	868.4	868.7	0.3	3120	100
and	869.0	869.3	0.3	321	100
OSK-W-20-2275-W2	906.6	910.3	3.7	7.56		Triple Lynx	Triple Lynx
including	909.0	909.5	0.5	25.7		Triple Lynx	Triple Lynx
OSK-W-20-2280-W2	998.4	1001.1	2.7	11.2		Lynx_368	Triple Lynx
	1027.9	1031.3	3.4	5.60		Lynx_363	Triple Lynx
including	1027.9	1028.3	0.4	28.3		Lynx_363	Triple Lynx
OSK-W-20-2295-W2	654.0	656.0	2.0	16.1		Lynx_376	Triple Lynx
including	654.5	655.0	0.5	51.9		Lynx_376	Triple Lynx
OSK-W-20-2295-W3	697.0	699.0	2.0	5.11		Triple Lynx	Triple Lynx
including	698.1	698.5	0.4	22.8		Triple Lynx	Triple Lynx
OSK-W-20-2313-W2	986.3	988.3	2.0	6.69		Triple Lynx	Triple Lynx
OSK-W-20-2339	608.3	610.5	2.2	8.59		Triple Lynx	Triple Lynx
WST-20-0473	101.0	103.0	2.0	12.3		Lynx_304	Lynx
including	102.5	103.0	0.5	48.6		Lynx_304	Lynx
WST-20-0486	93.0	95.0	2.0	5.03		Lynx_323	Lynx
WST-20-0487	103.7	106.0	2.3	25.2		Lynx_359	Lynx
including	104.4	105.0	0.6	53.2		Lynx_359	Lynx
WST-20-0500	132.0	134.5	2.5	10.1		Lynx_304	Lynx
including	132.9	133.6	0.7	35.9		Lynx_304	Lynx
WST-20-0506	82.7	85.1	2.4	6.21		Lynx_311	Lynx
WST-20-0508	51.4	53.5	2.1	6.01		Lynx_311	Lynx
including	52.8	53.1	0.3	37.7		Lynx_311	Lynx
	70.5	72.8	2.3	9.05		Lynx_323	Lynx
	77.4	80.0	2.6	4.45		Lynx_308	Lynx
including	77.7	78.1	0.4	21.9		Lynx_308	Lynx
	93.9	96.0	2.1	94.9	22.0	Lynx_304	Lynx
including	93.9	94.3	0.4	483	100	Lynx_304	Lynx
	109.0	111.2	2.2	19.2		Lynx_359	Lynx
including	110.7	111.2	0.5	71.7		Lynx_359	Lynx
WST-20-0511	82.5	88.4	5.9	15.6		Lynx_308	Lynx
including	83.4	84.0	0.6	79.7		Lynx_308	Lynx
	92.0	94.0	2.0	9.36		Lynx_304	Lynx
including	93.6	94.0	0.4	45.0		Lynx_304	Lynx
WST-20-0515	156.0	158.0	2.0	24.4	20.4	Lynx_323	Lynx
including	157.0	157.4	0.4	120	100	Lynx_323	Lynx
	169.0	171.0	2.0	25.0	21.0	Lynx_304	Lynx
including	169.0	169.4	0.4	120	100	Lynx_304	Lynx
WST-20-0569	310.5	312.7	2.2	327	28.2	Lynx_356	Lynx
including	310.5	311.1	0.6	1195	100	Lynx_356	Lynx

Notes: True widths are estimated at 55 – 80% of the reported core length interval. See “Quality Control and Reporting Protocols” below.

Drill hole location

Hole Number	Azimuth (°)	Dip (°)	Length (m)	UTM E	UTM N	Elevation	Section
OSK-W-20-2133-W4	118	-49	987	453080	5435531	417	3525
OSK-W-20-2252-W5	129	-54	1092	453241	5435694	415	3750
OSK-W-20-2252-W7	129	-54	1089	453241	5435694	415	3750
OSK-W-20-2256-W5	125	-51	1022	453160	5435686	414	3675
OSK-W-20-2275-W2	127	-49	1035	452886	5435584	409	3400
OSK-W-20-2280-W2	127	-58	1211	453304	5435639	415	3775
OSK-W-20-2295-W2	132	-51	963	452938	5435472	415	3375
OSK-W-20-2295-W3	132	-51	969	452938	5435472	415	3375
OSK-W-20-2313-W2	134	-52	1047	452965	5435583	420	3450
OSK-W-20-2339	144	-50	1025	452960	5435442	415	3400
WST-20-0473	149	-16	202	453493	5435287	117	3775
WST-20-0486	130	-37	162	453359	5435209	154	3625
WST-20-0487	140	-5	177	453358	5435208	155	3625
WST-20-0500	139	-30	166	453228	5435126	135	3475
WST-20-0506	175	20	141	453357	5435208	156	3625
WST-20-0508	136	-12	138	453316	5435165	124	3575
WST-20-0511	137	8	162	453316	5435165	125	3575
WST-20-0515	158	-33	186	453418	5435305	68	3725
WST-20-0569	165	-59	526	453104	5435065	231	3325

Lynx Zone

Triple Lynx

Qualified Person

Quality Control and Reporting Protocols

About the Windfall Gold Deposit

The Windfall gold deposit is located between Val-d’Or and Chibougamau in Eeyou Istchee James Bay, Québec, Canada. The mineral resource defined by Osisko, as disclosed in the news release dated February 19, 2020 and supported by the technical report entitled “An updated mineral resource estimate for the Windfall Lake Project, Located in the Abitibi Greenstone Belt, Urban Township, Eeyou Istchee James Bay, Québec, Canada” and dated April 3, 2020 (with an effective date of January 3, 2020), and assuming a cut-off grade of 3.5 g/t, comprises 4,127,000 tonnes at 9.1 g/t Au (1,206,000 ounces) in the indicated mineral resource category and 14,532,000 tonnes at 8.40 g/t Au (3,938,000 ounces) in the inferred mineral resource category. The key assumptions, parameters and methods used to estimate the mineral resource estimate disclosed in the February 19,2020 news release are further described in the full technical report prepared by Micon International Limited (“Micon”) and BBA Inc (“BBA”), in accordance with NI 43-101 available on SEDAR (www.sedar.com) under the Corporation’s issuer profile. The Windfall gold deposit is currently one of the highest-grade resource-stage gold projects in Canada and has world-class scale. Mineralization occurs in three principal zones: Lynx, Main Zone, and Underdog. Mineralization is generally comprised of deformed sub-vertical zones plunging to the northeast. Vein-type or pyrite replacement-type styles of mineralization crosscut syn-volcanic host rocks and syn-deformation felsic porphyry intrusions and are spatially associated with the contacts of the intrusions. The deposit is well defined from surface to a depth of 1,200 metres and remains open along strike and at depth. Mineralization has been identified 30 metres from surface in some areas and as deep as 2,000 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% interest in the high-grade Windfall 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 2,700 square kilometres).

Cautionary Note Regarding Forward-Looking Information

CONTACT INFORMATION:

John Burzynski
Chief Executive Officer
Telephone (416) 363-8653

OSISKO WINDFALL INFILL DRILLING INTERSECTS SOME MORE GOLD

Posted on November 17, 2020November 8, 2023 by Yannick Fradette

Including 75.7 g/t Au Over 12.3 Metres and 193 g/t Au Over 2.3 Metres

(Toronto, November 17, 2020) Osisko Mining Inc. (OSK:TSX. “Osisko” or the “Corporation”) is pleased to provide new analytical results from the ongoing expansion and definition drill program at its 100% owned Windfall gold project located in the Abitibi greenstone belt, Urban Township, Eeyou Istchee James Bay, Québec.

Drilling is currently focused on the Lynx deposit. Osisko Chief Executive Officer John Burzynski commented: “Lynx continues to deliver on high-grade and width with consistency, as illustrated by today’s headline intercepts of 193 g/t Au over 2.3 metres and 75.7 g/t Au over 12.3 metres.”

Selected high-grade intercepts from the new results include: 75.7 g/t Au over 12.3 metres in OSK-W-20-2264; 193 g/t Au over 2.3 metres in OSK-W-20-2133-W3; and 37.6 g/t Au over 2.0 metres in OSK-W-20-2275-W3. 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-W-20-2133-W2	901.3	903.5	2.2	9.27		Lynx_331	Lynx
including	901.7	902.0	0.3	59.4		Lynx_331	Lynx
OSK-W-20-2133-W3	791.2	793.5	2.3	193	41.7	Triple Lynx	Triple Lynx
including	792.7	793.1	0.4	972	100	Triple Lynx	Triple Lynx
	874.8	877.0	2.2	9.52		Triple Lynx	Triple Lynx
including	875.8	876.3	0.5	32.5		Triple Lynx	Triple Lynx
	931.1	933.2	2.1	8.05		Triple Lynx	Triple Lynx
including	932.7	933.2	0.5	20.2		Triple Lynx	Triple Lynx
OSK-W-20-2139-W11	882.9	885.0	2.1	8.33		Lynx_361	Triple Lynx
	896.3	898.6	2.3	13.6		Lynx_361	Triple Lynx
including	896.3	896.6	0.3	35.3		Lynx_361	Triple Lynx
	912.2	914.4	2.2	4.36		Lynx_363	Triple Lynx
including	914.0	914.4	0.4	13.7		Lynx_363	Triple Lynx
	954.0	956.0	2.0	7.91		Lynx_369	Triple Lynx
including	954.5	955.2	0.7	20.4		Lynx_369	Triple Lynx
OSK-W-20-2256-W5	892.1	894.1	2.0	4.85		Lynx_368	Triple Lynx
OSK-W-20-2264	766.5	778.8	12.3	75.7	21	Lynx_334	Lynx
including	773.8	774.4	0.6	1085	100
and	774.4	775.3	0.9	190	100
OSK-W-20-2275-W3	669.5	672.3	2.8	11.8		Triple Lynx	Triple Lynx
including	669.5	670.2	0.7	46.5		Triple Lynx	Triple Lynx
	776.7	781.0	4.3	9.73		Lynx_376	Triple Lynx
	807.5	809.5	2.0	37.6	15.5	Triple Lynx	Triple Lynx
including	807.5	807.8	0.3	247	100
OSK-W-20-2280-W2	1012.2	1014.9	2.7	7.72		Lynx_368	Triple Lynx
	1073.6	1075.6	2.0	13.9		Lynx_364	Triple Lynx
including	1074.2	1074.9	0.7	35.9		Lynx_364	Triple Lynx
	1083.0	1086.0	3.0	9.71		Lynx_364	Triple Lynx
	1113.4	1115.4	2.0	4.29		Lynx_370	Triple Lynx
including	1113.7	1114.0	0.3	19.1		Lynx_370	Triple Lynx
OSK-W-20-2280-W3	1011.0	1013.0	2.0	9.31		Lynx_368	Triple Lynx
	1075.0	1078.0	3.0	10.1		Lynx_364	Triple Lynx
OSK-W-20-2283-W1	553.9	556.0	2.1	7.37		Lynx_365	Triple Lynx
including	554.5	555.3	0.8	16.7		Lynx_365	Triple Lynx
	794.5	797.7	3.2	22.1		Triple Lynx	Triple Lynx
	818.0	822.0	4.0	6.80		Triple Lynx	Triple Lynx
OSK-W-20-2292-W3	817.0	819.0	2.0	4.11		Lynx_361	Triple Lynx
OSK-W-20-2295-W2	885.7	888.0	2.3	4.53		Triple Lynx	Triple Lynx
OSK-W-20-2295-W3	890.7	892.7	2.0	12.7		Triple Lynx	Triple Lynx
including	891.7	892.2	0.5	45.2		Triple Lynx	Triple Lynx
WST-20-0404	109.1	111.1	2.0	5.90		Lynx_304	Lynx
including	110.4	111.1	0.7	16.0		Lynx_304	Lynx
	137.5	139.6	2.1	6.17		Lynx_321	Lynx
WST-20-0407	178.4	180.5	2.1	4.24		Lynx_315	Lynx
WST-20-0425	66.6	70.5	3.9	7.09		Lynx_311	Lynx
including	66.6	67.6	1.0	16.5		Lynx_311	Lynx
	109.0	111.3	2.3	3.55		Lynx_304	Lynx
WST-20-0483	98.0	100.0	2.0	4.93		Lynx_304	Lynx
including	98.4	98.7	0.3	24.1		Lynx_304	Lynx
WST-20-0487	89.0	91.5	2.5	6.87		Lynx_304	Lynx
including	91.1	91.5	0.4	36.4		Lynx_304	Lynx
WST-20-0494	164.4	166.4	2.0	10.8		Lynx_301	Lynx
including	165.2	165.5	0.3	64.8		Lynx_301	Lynx
WST-20-0495	119.0	121.0	2.0	6.89		Lynx_304	Lynx
including	120.6	121.0	0.4	20.8		Lynx_304	Lynx
	131.2	133.5	2.3	3.67		Lynx_321	Lynx
including	133.1	133.5	0.4	16.9		Lynx_321	Lynx
WST-20-0498	108.0	110.0	2.0	3.23		Lynx_320	Lynx
including	108.5	109.0	0.5	12.9		Lynx_320	Lynx
WST-20-0499	56.0	58.2	2.2	16.5		Lynx_311	Lynx
including	57.0	57.4	0.4	83.5		Lynx_311	Lynx
WST-20-0500	56.1	58.4	2.3	10.2		Lynx_311	Lynx
including	57.0	57.4	0.4	43.0		Lynx_311	Lynx

Notes: True widths are estimated at 55 – 80% of the reported core length interval. See “Quality Control and Reporting Protocols” below.

Drill hole location

Hole Number	Azimuth (°)	Dip (°)	Length (m)	UTM E	UTM N	Elevation	Section
OSK-W-20-2133-W2	118	-49	1139	453080	5435531	417	3525
OSK-W-20-2133-W3	118	-49	965	453080	5435531	417	3525
OSK-W-20-2139-W11	115	-52	995	452980	5435549	420	3450
OSK-W-20-2256-W5	125	-51	1022	453160	5435686	414	3675
OSK-W-20-2264	292	-74	1119	454127	5435062	396	4225
OSK-W-20-2275-W3	127	-49	1050	452886	5435584	409	3400
OSK-W-20-2280-W2	127	-58	1211	453304	5435639	415	3775
OSK-W-20-2280-W3	127	-58	1191	453304	5435639	415	3775
OSK-W-20-2283-W1	135	-50	1035	452997	5435607	425	3500
OSK-W-20-2292-W3	125	-54	943	453037	5435563	420	3525
OSK-W-20-2295-W2	132	-51	963	452938	5435472	415	3375
OSK-W-20-2295-W3	132	-51	969	452938	5435472	415	3375
WST-20-0404	163	-4	192	453493	5435286	117	3775
WST-20-0407	106	9	202	453495	5435288	118	3775
WST-20-0425	161	18	166	453358	5435208	156	3625
WST-20-0483	170	2	193	453449	5435264	116	3725
WST-20-0487	140	-5	177	453358	5435208	155	3625
WST-20-0494	124	0	189	453495	5435288	117	3775
WST-20-0495	165	2	184	453495	5435288	117	3775
WST-20-0498	132	-11	169	453228	5435126	136	3475
WST-20-0499	131	-21	163	453228	5435126	135	3475
WST-20-0500	139	-30	166	453228	5435126	135	3475

Lynx Zone

Triple Lynx

Qualified Person

Quality Control and Reporting Protocols

About the Windfall Gold Deposit

The Windfall gold deposit is located between Val-d’Or and Chibougamau in Eeyou Istchee James Bay, Québec, Canada. The mineral resource defined by Osisko, as disclosed in the news release dated February 19, 2020 and supported by the technical report entitled “An updated mineral resource estimate for the Windfall Lake Project, Located in the Abitibi Greenstone Belt, Urban Township, Eeyou Istchee James Bay, Québec, Canada” and dated April 3, 2020 (with an effective date of January 3, 2020), and assuming a cut-off grade of 3.5 g/t, comprises 4,127,000 tonnes at 9.1 g/t Au (1,206,000 ounces) in the indicated mineral resource category and 14,532,000 tonnes at 8.40 g/t Au (3,938,000 ounces) in the inferred mineral resource category. The key assumptions, parameters and methods used to estimate the mineral resource estimate disclosed in the February 19,2020 news release are further described in the full technical report prepared by Micon International Limited (“Micon”) and BBA Inc (“BBA”), in accordance with NI 43-101 available on SEDAR (www.sedar.com) under the Corporation’s issuer profile. The Windfall gold deposit is currently one of the highest-grade resource-stage gold projects in Canada and has world-class scale. Mineralization occurs in three principal zones: Lynx, Main Zone, and Underdog. Mineralization is generally comprised of deformed sub-vertical zones plunging to the northeast. Vein-type or pyrite replacement-type styles of mineralization crosscut syn-volcanic host rocks and syn-deformation felsic porphyry intrusions and are spatially associated with the contacts of the intrusions. The deposit is well defined from surface to a depth of 1,200 metres and remains open along strike and at depth. Mineralization has been identified 30 metres from surface in some areas and as deep as 2,000 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% interest in the high-grade Windfall 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 2,700 square kilometres).

Cautionary Note Regarding Forward-Looking Information

CONTACT INFORMATION:

John Burzynski
Chief Executive Officer
Telephone (416) 363-8653

OSISKO WINDFALL INFILL DRILLING RETURNS MORE OF THE SAME

Posted on November 5, 2020November 8, 2023 by Yannick Fradette

395 g/t Au Over 2.3 Metres and 61.5 g/t Au Over 9.2 Metres

(Toronto, November 5, 2020) Osisko Mining Inc. (OSK:TSX. “Osisko” or the “Corporation”) is pleased to provide new analytical results from the ongoing expansion and definition drill program at its 100% owned Windfall gold project located in the Abitibi greenstone belt, Urban Township, Eeyou Istchee James Bay, Québec.

Drilling is currently focused on the Lynx deposit. Osisko Chief Executive Officer John Burzynski commented: “Infill drilling at Windfall, and in particular Lynx, continues to progress well. Predictably, and with a familiar consistency, once again Lynx delivered on high-grade with our headline intercept of 395 g/t Au over 2.3 metres, and also on width with the very nice intercept of 61.5 g/t Au over 9.2 metres.”

Selected high-grade intercepts from the new results include: 395 g/t Au over 2.3 metres OSK-W-20-2292-W1; 61.5 g/t Au over 9.2 metres and 37.0 g/t Au over 3.0 metres in OSK-W-20-2256-W4; 55.5 g/t Au over 2.5 metres in WST-20-0350 and 40.1 g/t Au over 2.8 metres in WST-20-0013. 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-W-20-2139-W12	905.3	907.9	2.6	28.5		Lynx_371	Triple Lynx
including	906.2	906.8	0.6	88.3		Lynx_371	Triple Lynx
OSK-W-20-2139-W9	886.7	893.0	6.3	15.4		Lynx_371	Triple Lynx
OSK-W-20-2252-W3	865.7	867.7	2.0	11.7		Lynx_371	Triple Lynx
including	865.7	866.0	0.3	58.6		Lynx_371	Triple Lynx
OSK-W-20-2256-W4	862.0	871.2	9.2	61.5	32.6	Lynx_361	Triple Lynx
including	863.0	864.0	1.0	281	100
and	870.0	871.2	1.2	171	100
	881.0	884.0	3.0	37.0		Lynx_361	Triple Lynx
including	882.0	883.0	1.0	86.2		Lynx_361	Triple Lynx
OSK-W-20-2275-W2	628.9	631.0	2.1	8.18		Lynx_365	Triple Lynx
including	628.9	629.8	0.9	18.5		Lynx_365	Triple Lynx
	800.0	802.3	2.3	3.65		Lynx_376	Triple Lynx
including	800.0	800.6	0.6	10.9		Lynx_376	Triple Lynx
OSK-W-20-2283	935.0	937.0	2.0	18.5		Triple Lynx	Triple Lynx
including	936.0	936.7	0.7	49.6		Triple Lynx	Triple Lynx
OSK-W-20-2292-W1	1040.7	1043.0	2.3	395	15.4	Lynx_374	Triple Lynx
including	1041.3	1041.6	0.3	3010	100	Lynx_374	Triple Lynx
OSK-W-20-2292-W2	909.3	913.0	3.7	3.64		Lynx_375	Triple Lynx
OSK-W-20-2322	1090.3	1094.1	3.8	28.9		Lynx_334	Lynx
including	1090.3	1091.3	1.0	81.9		Lynx_334	Lynx
WST-20-0011	74.3	76.4	2.1	4.68		Lynx_311	Lynx
WST-20-0012D	81.0	83.0	2.0	3.14		Lynx_311	Lynx
including	82.5	83.0	0.5	8.68		Lynx_311	Lynx
WST-20-0013	140.0	142.8	2.8	40.1	31.5	Lynx_304	Lynx
including	140.7	141.5	0.8	130	100	Lynx_304	Lynx
WST-20-0014A	100.2	102.2	2.0	5.40		Lynx_304	Lynx
WST-20-0350	128.5	131.0	2.5	55.5		Lynx_359	Lynx
including	129.2	129.9	0.7	98.8		Lynx_359	Lynx
WST-20-0352	32.3	36.0	3.7	16.2		Lynx_325	Lynx
including	35.0	36.0	1.0	46.8		Lynx_325	Lynx
	97.0	99.0	2.0	5.95		Lynx_304	Lynx
WST-20-0394	35.1	37.3	2.2	11.7		Lynx_325	Lynx
	70.8	72.8	2.0	4.15		Lynx_311	Lynx
	107.0	109.3	2.3	24.2	23.2	Lynx_304	Lynx
including	107.0	107.7	0.7	78.9	75.7	Lynx_304	Lynx
WST-20-0395	50.0	52.0	2.0	6.45		Lynx_303	Lynx
WST-20-0420	79.4	81.7	2.3	4.11		Lynx_323	Lynx
including	81.4	81.7	0.3	29.1		Lynx_323	Lynx
	150.0	152.1	2.1	19.0		Lynx_321	Lynx
including	151.2	152.1	0.9	43.5		Lynx_321	Lynx
WST-20-0422	160	162	2.0	5.90		Lynx_328	Lynx
WST-20-0482	87.9	90.0	2.1	6.00		Lynx_323	Lynx
WST-20-0484	43.1	45.5	2.4	4.80		Lynx_325	Lynx
including	43.7	44.0	0.3	33.1		Lynx_325	Lynx
	94.2	96.3	2.1	13.5		Lynx_304	Lynx
including	94.8	95.2	0.4	31.0		Lynx_304	Lynx
WST-20-0485	106.3	108.3	2.0	5.55		Lynx_323	Lynx
including	107.9	108.3	0.4	27.2		Lynx_323	Lynx
	119.3	122.0	2.7	12.6		Lynx_304	Lynx
including	119.3	119.7	0.4	60.5		Lynx_304	Lynx
	143.2	145.3	2.1	16.3		Lynx_359	Lynx
including	144.3	145.0	0.7	48.4		Lynx_359	Lynx
WST-20-0486	44.9	47.3	2.4	11.2		Lynx_325	Lynx
Including	46.8	47.3	0.5	34.8		Lynx_325	Lynx
	51.5	54.5	3.0	14.9		Lynx_303	Lynx

Notes: True widths are estimated at 55 – 80% of the reported core length interval. See “Quality Control and Reporting Protocols” below.

Drill hole location

Hole Number	Azimuth (°)	Dip (°)	Length (m)	UTM E	UTM N	Elevation	Section
OSK-W-20-2139-W12	115	-52	1038	452980	5435549	420	3450
OSK-W-20-2139-W9	115	-52	1152	452980	5435549	420	3450
OSK-W-20-2252-W3	129	-53	1062	453241	5435694	415	3750
OSK-W-20-2256-W4	125	-51	1122	453160	5435686	414	3675
OSK-W-20-2275-W2	127	-49	1035	452886	5435584	409	3400
OSK-W-20-2283	135	-50	1151	452997	5435607	425	3500
OSK-W-20-2292-W1	125	-54	1149	453037	5435563	420	3525
OSK-W-20-2292-W2	125	-54	1002	453037	5435563	420	3525
OSK-W-20-2322	130	-54	1191	453608	5435713	404	4075
WST-20-0011	157	-54	451	453105	5435065	231	3325
WST-20-0012D	174	-62	465	453226	5435126	134	3475
WST-20-0013	171	-42	169	453357	5435208	154	3625
WST-20-0014A	137	1	124	453359	5435209	155	3625
WST-20-0350	142	-31	175	453359	5435209	154	3625
WST-20-0352	140	-10	177	453359	5435209	155	3625
WST-20-0394	152	-26	172	453358	5435208	154	3625
WST-20-0395	153	-16	169	453358	5435208	155	3625
WST-20-0420	155	-10	166	453450	5435264	116	3725
WST-20-0422	171	-26	177	453449	5435264	117	3725
WST-20-0482	165	-9	181	453449	5435264	117	3725
WST-20-0484	138	-26	160	453359	5435209	154	3625
WST-20-0485	148	-44	181	453359	5435209	154	3625
WST-20-0486	130	-37	162	453359	5435209	154	3625

Lynx Zone

Triple Lynx

Qualified Person

Quality Control and Reporting Protocols

About the Windfall Gold Deposit

The Windfall gold deposit is located between Val-d’Or and Chibougamau in Eeyou Istchee James Bay, Québec, Canada. The mineral resource defined by Osisko, as disclosed in the news release dated February 19, 2020 and supported by the technical report entitled “An updated mineral resource estimate for the Windfall Lake Project, Located in the Abitibi Greenstone Belt, Urban Township, Eeyou Istchee James Bay, Québec, Canada” and dated April 3, 2020 (with an effective date of January 3, 2020), and assuming a cut-off grade of 3.5 g/t, comprises 4,127,000 tonnes at 9.1 g/t Au (1,206,000 ounces) in the indicated mineral resource category and 14,532,000 tonnes at 8.40 g/t Au (3,938,000 ounces) in the inferred mineral resource category. The key assumptions, parameters and methods used to estimate the mineral resource estimate disclosed in the February 19,2020 news release are further described in the full technical report prepared by Micon International Limited (“Micon”) and BBA Inc (“BBA”), in accordance with NI 43-101 available on SEDAR (www.sedar.com) under the Corporation’s issuer profile. The Windfall gold deposit is currently one of the highest-grade resource-stage gold projects in Canada and has world-class scale. Mineralization occurs in three principal zones: Lynx, Main Zone, and Underdog. Mineralization is generally comprised of deformed sub-vertical zones plunging to the northeast. Vein-type or pyrite replacement-type styles of mineralization crosscut syn-volcanic host rocks and syn-deformation felsic porphyry intrusions and are spatially associated with the contacts of the intrusions. The deposit is well defined from surface to a depth of 1,200 metres and remains open along strike and at depth. Mineralization has been identified 30 metres from surface in some areas and as deep as 2,000 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% interest in the high-grade Windfall 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 2,700 square kilometres).

Cautionary Note Regarding Forward-Looking Information

CONTACT INFORMATION:

John Burzynski
Chief Executive Officer
Telephone (416) 363-8653

OSISKO INFILL DRILLING RETURNS HIGH GRADE AT WINDFALL

Posted on October 8, 2020November 8, 2023 by Yannick Fradette

Including 22.3 g/t Au Over 15.9 Metres

(Toronto, October 8, 2020) Osisko Mining Inc. (OSK:TSX. “Osisko” or the “Corporation”) is pleased to provide new analytical results from the ongoing expansion and definition drill program at its 100% owned Windfall gold project located in the Abitibi greenstone belt, Urban Township, Eeyou Istchee James Bay, Québec.

Drilling is currently focused on the Lynx deposit. Osisko Chief Executive Officer John Burzynski commented: “Infill drilling is progressing very well, daily increasing our confidence in the continuity and prevalence of high-grade mineralization at Windfall. Today’s infill results contain 18 intercepts with uncut average grades of over half an ounce per tonne, including the spectacular 22.3 g/t Au over 15.9 metres, showing that Lynx not only has grade but can also deliver width.”

Selected high-grade intercepts from the new results include: 314 g/t Au over 3.0 metres in OSK-W-20-2260-W1; 22.3 g/t Au over 15.9 metres in OSK-W-20-2139-W10; 33.6 g/t Au over 9.8 metres in OSK-W-20-2280-W1; 127 g/t Au over 2.3 metres in OSK-W-20-2256; 97.8 g/t Au over 2.5 metres in OSK-W-20-2292-W1; and 53.4 g/t Au over 2.1 metres in OSK-W-20-2252-W4. Maps showing hole locations and full analytical results are available at www.osiskomining.com

Infill Drilling

Hole No.	From (m)	To (m)	Interval (m)	Au (g/t) uncut	Au (g/t) cut to 100 g/t	Zone	Corridor
OSK-W-20-2139-W10	899.0	914.9	15.9	22.3		LYNX_371	TRIPLE LYNX
including	907.1	907.6	0.5	80.2		LYNX_371	TRIPLE LYNX
	941.9	944.0	2.1	17.4		Lynx_363	Triple Lynx
OSK-W-20-2197-W2	780.0	782.0	2.0	10.1		Lynx_363	Triple Lynx
including	780.8	781.7	0.9	22.1		Lynx_363	Triple Lynx
OSK-W-20-2252-W2	826.0	828.0	2.0	4.03		Lynx_371	Triple Lynx
	833.0	835.0	2.0	4.41		Lynx_371	Triple Lynx
OSK-W-20-2252-W4	880.5	882.6	2.1	53.4	33.2	Lynx_371	Triple Lynx
including	882.0	882.6	0.6	171	100	Lynx_371	Triple Lynx
	889.0	892.0	3.0	3.24		Lynx_361	Triple Lynx
	902.0	904.0	2.0	41.5		Lynx_361	Triple Lynx
including	903.0	904.0	1.0	82.1		Lynx_361	Triple Lynx
OSK-W-20-2256	852.8	855.0	2.2	44.4	19.7	Lynx_371	Triple Lynx
including	853.2	853.6	0.4	236	100	Lynx_371	Triple Lynx
	881.1	883.4	2.3	127	51.1	Lynx_361	Triple Lynx
including	882.2	882.8	0.6	390	100	Lynx_361	Triple Lynx
	894.0	896.2	2.2	4.63		Lynx_361	Triple Lynx
	898.0	900.0	2.0	11.3		Lynx_361	Triple Lynx
	978.9	982.9	4.0	4.44		Lynx_369	Triple Lynx
including	982.2	982.9	0.7	10.5		Lynx_369	Triple Lynx
OSK-W-20-2256-W4	930.0	934.0	4.0	5.63		Lynx_364	Triple Lynx
	963.0	965.0	2.0	19.3		Lynx_369	Triple Lynx
including	964.0	964.5	0.5	76.4		Lynx_369	Triple Lynx
OSK-W-20-2260-W1	843.0	846.0	3.0	314	38.0	Lynx_361	Triple Lynx
including	843.4	844.4	1.0	927	100	Lynx_361	Triple Lynx
OSK-W-20-2272	613.0	615.0	2.0	3.45		Lynx_356	Lynx
OSK-W-20-2275	796.0	798.0	2.0	4.38		Lynx_365	Triple Lynx
including	796.0	796.6	0.6	11.3		Lynx_365	Triple Lynx
	837.0	839.2	2.2	23.4	22.8	Lynx_365	Triple Lynx
including	837.7	838.2	0.5	102	100	Lynx_365	Triple Lynx
OSK-W-20-2280	1003.7	1006.3	2.6	4.94		Lynx_368	Triple Lynx
including	1003.7	1004.0	0.3	11.1
and	1004.0	1004.4	0.4	10.5
	1025.9	1030.1	4.2	8.13		Lynx_363	Triple Lynx
including	1027.0	1027.5	0.5	25.5		Lynx_363	Triple Lynx
	1038.0	1040.0	2.0	3.76		Lynx_363	Triple Lynx
including	1039.4	1040.0	0.6	8.10		Lynx_363	Triple Lynx
	1067.0	1069.0	2.0	12.5		Lynx_364	Triple Lynx
including	1067.8	1068.1	0.3	52.1		Lynx_364	Triple Lynx
	1079.0	1081.0	2.0	4.09		Lynx_364	Triple Lynx
	1088.7	1094.4	5.7	16.8	12.9	Lynx_369	Triple Lynx
including	1093.2	1093.5	0.3	173	100	Lynx_369	Triple Lynx
	1109.0	1111.0	2.0	4.64		Lynx_370	Triple Lynx
OSK-W-20-2280-W1	1006.0	1008.0	2.0	4.22		Lynx_368	Triple Lynx
including	1006.0	1007.0	1.0	8.08		Lynx_368	Triple Lynx
	1013.0	1016.0	3.0	4.82		Lynx_368	Triple Lynx
	1021.9	1024.1	2.2	20.3		Lynx_363	Triple Lynx
	1043.4	1047.6	4.2	27.7		Lynx_363	Triple Lynx
including	1043.7	1044.7	1.0	78.6		Lynx_363	Triple Lynx
	1080.8	1083.0	2.2	4.81		Lynx_364	Triple Lynx
	1097.0	1106.8	9.8	33.6	27.6	Lynx_370	Triple Lynx
including	1102.0	1104.0	2.0	129	100
and	1106.5	1106.8	0.3	108	100
OSK-W-20-2288	624.4	633.9	9.5	12.0		Lynx_356	Lynx
including	629.4	630.0	0.6	27.9
and	632.7	633.3	0.6	28.8
OSK-W-20-2292	852.0	854.0	2.0	3.87		Lynx_363	Triple Lynx
including	852.0	852.7	0.7	10.9		Lynx_363	Triple Lynx
OSK-W-20-2292-W1	835.9	838.0	2.1	3.39		Lynx_361	Triple Lynx
	840.0	843.5	3.5	3.65		Lynx_361	Triple Lynx
including	840.0	840.4	0.4	7.83
and	843.0	843.5	0.5	9.84
	857.0	859.3	2.3	26.0		Lynx_363	Triple Lynx
including	858.3	859.3	1.0	57.6		Lynx_363	Triple Lynx
	889.5	892.0	2.5	97.8	32.2	Lynx_364	Triple Lynx
including	890.3	891.1	0.8	305	100	Lynx_364	Triple Lynx
OSK-W-20-2293	139.9	142.4	2.5	5.25		F17_6005	F-17
including	142.0	142.4	0.4	18.0		F17_6005	F-17
OSK-W-20-2297	128.0	131.0	3.0	29.3	24.2	F17_6003	F-17
including	128.0	128.4	0.4	138	100	F17_6003	F-17
	166.5	168.8	2.3	5.82		F17_6005	F-17
OSK-W-20-2300	149.7	154.0	4.3	7.42		F17_6005	F-17
including	151.0	152.0	1.0	15.6		F17_6005	F-17
OSK-W-20-2312	126.0	128.0	2.0	7.26		Mallard_5200	Mallard
including	127.0	127.6	0.6	22.6		Mallard_5200	Mallard
OSK-W-20-2315	127.0	129.0	2.0	5.59		Mallard_5200	Mallard
	157.0	159.0	2.0	4.13		Mallard_5213	Mallard
OSK-W-20-2321	166.3	168.5	2.2	6.40		Mallard_5213	Mallard
including	167.2	167.8	0.6	21.2		Mallard_5213	Mallard
OSK-W-20-2323	153.0	155.0	2.0	3.88		Mallard_5213	Mallard
including	154.7	155.0	0.3	24.1		Mallard_5213	Mallard
OSK-W-20-2327	105.3	111.4	6.1	13.6		Mallard_5213	Mallard
including	109.0	110.0	1.0	48.9		Mallard_5213	Mallard
WST-20-0135	72.0	74.3	2.3	4.20		Lynx_311	Lynx
including	73.9	74.3	0.4	14.6		Lynx_311	Lynx
WST-20-0318	65.0	68.5	3.5	36.2		Lynx_311	Lynx
including	66.0	66.7	0.7	91.0		Lynx_311	Lynx
WST-20-0389A	192.0	194.3	2.3	9.23		Lynx_341	Lynx
including	192.0	192.6	0.6	23.5		Lynx_341	Lynx
	553.9	555.9	2.0	3.44		Lynx_340	Lynx
including	553.9	554.3	0.4	15.7		Lynx_340	Lynx
WST-20-0391A	91.6	94.1	2.5	6.21		Lynx_304	Lynx
including	93.4	94.1	0.7	17.6		Lynx_304	Lynx
	98.3	100.5	2.2	3.47		Lynx_304	Lynx
WST-20-0392	82.8	84.8	2.0	8.12		Lynx_323	Lynx
including	83.4	83.8	0.4	26.3		Lynx_323	Lynx
	88.0	90.2	2.2	5.49		Lynx_323	Lynx
	107.0	109.7	2.7	11.2		Lynx_304	Lynx
including	108.4	108.8	0.4	70.9		Lynx_304	Lynx
WST-20-0393	48.9	51.5	2.6	4.68		Lynx_325	Lynx
including	50.0	50.7	0.7	10.2		Lynx_325	Lynx
	113.2	115.9	2.7	5.34		Lynx_304	Lynx
including	114.3	114.8	0.5	18.8		Lynx_304	Lynx
WST-20-0402	142.1	144.4	2.3	25.8	14.3	Lynx_301	Lynx
including	142.1	142.4	0.3	189	100	Lynx_301	Lynx
WST-20-0409	85.4	87.4	2.0	3.37		Lynx_323	Lynx
WST-20-0412	97.6	99.9	2.3	9.21		Lynx_323	Lynx
including	99.6	99.9	0.3	48.5		Lynx_323	Lynx
WST-20-0421	87.6	90.0	2.4	3.87		Lynx_323	Lynx
including	88.2	88.5	0.3	28.3		Lynx_323	Lynx
	151.0	153.2	2.2	4.96		Lynx_321	Lynx
including	152.3	153.2	0.9	11.2		Lynx_321	Lynx
WST-20-0423	101.0	103.7	2.7	5.56		Lynx_304	Lynx
	109.0	112.0	3.0	9.95		Lynx_359	Lynx
WST-20-0424	115.0	117.0	2.0	8.3		Lynx_359	Lynx
including	116.0	117.0	1.0	15.4		Lynx_359	Lynx

Notes: True widths are estimated at 55 – 80% of the reported core length interval. See “Quality Control and Reporting Protocols” below.

DRILL HOLE LOCATION

Hole Number	Azimuth (°)	Dip (°)	Length (m)	UTM E	UTM N	Elevation	Section
OSK-W-20-2139-W10	115	-52	1212	452980	5435549	420	3450
OSK-W-20-2197-W2	121	-48	1064	453087	5435526	417	3550
OSK-W-20-2252-W2	129	-54	1194	453241	5435694	415	3750
OSK-W-20-2252-W4	129	-54	1143	453241	5435694	415	3750
OSK-W-20-2256	125	-51	1179	453160	5435686	414	3675
OSK-W-20-2256-W4	125	-51	1122	453160	5435686	414	3675
OSK-W-20-2260-W1	127	-48	1140	453201	5435667	413	3700
OSK-W-20-2272	149	-45	1004	452967	5435265	412	3300
OSK-W-20-2275	127	-49	1094	452886	5435584	409	3400
OSK-W-20-2280	127	-58	1161	453304	5435639	415	3775
OSK-W-20-2280-W1	127	-58	1170	453304	5435639	415	3775
OSK-W-20-2288	146	-51	749	452875	5435181	409	3175
OSK-W-20-2292	125	-54	1059	453037	5435563	420	3525
OSK-W-20-2292-W1	125	-54	1149	453037	5435563	420	3525
OSK-W-20-2293	145	-44	183	452658	5435549	406	3175
OSK-W-20-2297	149	-47	180	452652	5435567	405	3175
OSK-W-20-2300	152	-45	192	452699	5435578	406	3225
OSK-W-20-2312	334	-51	192	451964	5434816	408	2225
OSK-W-20-2315	334	-52	192	451979	5434805	407	2225
OSK-W-20-2321	332	-51	176	451958	5434790	407	2200
OSK-W-20-2323	335	-49	171	451936	5434791	405	2175
OSK-W-20-2327	334	-49	132	451901	5434810	401	2150
WST-20-0135	187	-58	444	453226	5435125	134	3475
WST-20-0318	148	-52	502	453228	5435127	134	3475
WST-20-0389A	115	-46	616	453452	5435266	115	3725
WST-20-0391A	135	8	174	453359	5435209	155	3625
WST-20-0392	126	2	181	453359	5435209	155	3625
WST-20-0393	153	-37	175	453358	5435208	154	3625
WST-20-0402	147	32	162	453493	5435287	119	3775
WST-20-0409	155	21	169	453450	5435264	117	3725
WST-20-0412	164	24	165	453450	5435264	117	3725
WST-20-0421	162	16	168	453450	5435264	117	3725
WST-20-0423	134	-18	142	453359	5435209	154	3625
WST-20-0424	160	5	178	453358	5435208	155	3625

Lynx Zone

F-Zone

Mineralization is hosted in sheared andesites with carbonate replacement or quartz veining and occurs as quartz ± ankerite veinlets or in shear zones as replacement, characterised by trace to 10% pyrite with local visible gold. Alteration is dominated by sericite-fuchsite-tourmaline-pyrite.

Mallard

Mineralization is hosted in sheared mafic volcanics with felsic porphyritic intrusions and occurs as veins associated with sericite-pyrite ± silica ± chlorite alteration and contains pyrite ranging from trace to 30% and local visible gold.

Qualified Person

Quality Control and Reporting Protocols

About the Windfall Gold Deposit

About Osisko Mining Inc.

Cautionary Note Regarding Forward-Looking Information

CONTACT INFORMATION:

John Burzynski
Chief Executive Officer
Telephone (416) 363-8653

OSISKO STEP-OUT DRILLING EXPANDS HIGH GRADE AT WINDFALL

Posted on October 7, 2020November 8, 2023 by Yannick Fradette

Including 391 g/t Au Over 2.4 Metres in Triple Lynx

(Toronto, October 7, 2020) Osisko Mining Inc. (OSK:TSX. “Osisko” or the “Corporation”) is pleased to provide new analytical results from the ongoing drill program at its 100% owned Windfall gold project located in the Abitibi greenstone belt, Urban Township, Eeyou Istchee James Bay, Québec.

Drilling is currently focused on the Lynx deposit. Osisko Chief Executive Officer John Burzynski commented: “Windfall continues to grow in scale with impressive results flowing in from the Lynx deposit. Today’s new intersections are all from outside the published resource area and include 15 intercepts with uncut average grades of over one oz/t. The ongoing expansion drilling continues to show the incredible upside growth potential of our deposit.”

Selected high-grade intercepts from the new results include: 391 g/t Au over 2.4 metres, 70 metres toward surface from wireframe Lynx_361, in OSK-W-20-2133-W2; 142 g/t Au over 2.3 metres in OSK-W-20-2307; 86.0 g/t Au over 2.1 metres in WST-20-0341A; 73.8 g/t Au over 2.0 metres in WST-20-0470; 54.4 g/t Au over 4.8 metres in OSK-W-20-2252-W2; and 49.8 g/t Au over 2.2 metres in OSK-W-20-2292. Maps showing hole locations and full analytical results are available at www.osiskomining.com

Expansion Drilling

Hole No.	From (m)	To (m)	Interval (m)	Au (g/t) uncut	Au (g/t) cut to 100 g/t	Zone	Corridor
OSK-W-17-1258	971.7	973.7	2.0	3.33		LYNX 4	LYNX
including	971.7	972.7	1.0	6.56		LYNX 4	LYNX
OSK-W-18-1727	782.9	784.9	2.0	12.7		Lynx	Lynx
OSK-W-19-1857-W11	1301.8	1304.6	2.8	7.39		Lynx 4	Lynx
OSK-W-19-2100-W4	1212.5	1214.7	2.2	5.22		Triple Lynx	Triple Lynx
	1242.0	1244.0	2.0	6.47		Triple Lynx	Triple Lynx
OSK-W-19-2101	664.4	667.0	2.6	5.48		Triple Lynx	Triple Lynx
OSK-W-20-2133-W2	783.6	786.0	2.4	391	31.1	Lynx_361	Triple Lynx
including	784.2	784.6	0.4	2260	100	Lynx_361	Triple Lynx
OSK-W-20-2139-W7	1081.0	1083.5	2.5	9.53		Triple Lynx	Triple Lynx
including	1081.0	1081.9	0.9	26.1		Triple Lynx	Triple Lynx
OSK-W-20-2139-W8	543.0	545.0	2.0	6.68		Triple Lynx	Triple Lynx
including	543.5	544.4	0.9	14.5		Triple Lynx	Triple Lynx
OSK-W-20-2139-W10	1196.0	1198.0	2.0	11.7		Triple Lynx	Triple Lynx
including	1196.0	1197.1	1.1	21.3		Triple Lynx	Triple Lynx
OSK-W-19-2169	893.9	895.9	2.0	5.59		Lynx 4	Lynx
including	894.7	895.3	0.6	18.2		Lynx 4	Lynx
	1256.3	1258.4	2.1	15.8		Lynx 4	Lynx
including	1257.5	1258.4	0.9	36.2		Lynx 4	Lynx
OSK-W-20-2170-W6	1384.0	1386.4	2.4	6.70		Lynx 4	Lynx
OSK-W-19-2173	29.0	31.0	2.0	3.07		F11	F11
OSK-W-19-2177	200.0	202.0	2.0	3.10		F11	F11
OSK-W-20-2197-W2	768.7	771.4	2.7	10.3		Lynx_361	Triple Lynx
including	769.7	770.7	1.0	26.0		Lynx_361	Triple Lynx
	1045.0	1047.0	2.0	5.66		Lynx 4	Lynx
OSK-W-20-2217-W2	860.0	862.0	2.0	14.0		Triple Lynx	Triple Lynx
including	860.0	860.5	0.5	55.6		Triple Lynx	Triple Lynx
OSK-W-20-2217-W3	830.0	832.3	2.3	7.53		Lynx_363	Triple Lynx
including	831.0	831.4	0.4	26.8		Lynx_363	Triple Lynx
	1111.7	1114.0	2.3	16.4		Triple Lynx	Triple Lynx
including	1113.5	1114.0	0.5	66.3		Triple Lynx	Triple Lynx
OSK-W-20-2249	730.0	732.0	2.0	5.66		Lynx SW	Lynx
including	730.5	730.9	0.4	22.8		Lynx SW	Lynx
OSK-W-20-2250	1002.2	1005.0	2.8	18.1	15.6	Triple Lynx	Triple Lynx
including	1002.2	1002.5	0.3	123	100	Triple Lynx	Triple Lynx
OSK-W-20-2250-W1	1009.0	1011.1	2.1	5.08		Triple Lynx	Triple Lynx
OSK-W-20-2250-W2	1024.7	1028.0	3.3	28.8		Triple Lynx	Triple Lynx
including	1026.4	1027.0	0.6	63.0		Triple Lynx	Triple Lynx
OSK-W-20-2250-W3	714.0	716.5	2.5	14.7		Triple Lynx	Triple Lynx
OSK-W-20-2250-W4	727.7	734.5	6.8	4.58		Triple Lynx	Triple Lynx
including	727.7	728.4	0.7	10.3
and	730.5	731.0	0.5	12.0
	855.4	858.0	2.6	6.29		Triple Lynx	Triple Lynx
including	857.2	858.0	0.8	18.6		Triple Lynx	Triple Lynx
OSK-W-20-2252-W2	812.0	814.0	2.0	7.64		Triple Lynx	Triple Lynx
	817.2	822.0	4.8	54.4	10.4	Triple Lynx	Triple Lynx
including	817.2	817.5	0.3	804	100	Triple Lynx	Triple Lynx
OSK-W-20-2252-W3	824.3	829.7	5.4	3.58		Triple Lynx	Triple Lynx
	845.1	847.1	2.0	4.01		Triple Lynx	Triple Lynx
OSK-W-20-2253	387.5	389.5	2.0	4.30		Caribou Corridor	Caribou
OSK-W-20-2256	870.0	872.8	2.8	9.81		Triple Lynx	Triple Lynx
OSK-W-20-2256-W2	815.0	817.0	2.0	3.17		Triple Lynx	Triple Lynx
OSK-W-20-2260-W2	1091.0	1093.0	2.0	6.47		Triple Lynx	Triple Lynx
including	1091.4	1092.1	0.7	18.1		Triple Lynx	Triple Lynx
	1174.4	1176.5	2.1	9.43		Triple Lynx	Triple Lynx
including	1176.0	1176.5	0.5	28.0		Triple Lynx	Triple Lynx
OSK-W-20-2263	94.0	96.0	2.0	8.58		Bobcat	Bobcat
including	94.0	95.0	1.0	16.9		Bobcat	Bobcat
	106.7	108.8	2.1	6.12		Bobcat	Bobcat
including	108.0	108.8	0.8	14.1		Bobcat	Bobcat
	710.0	712.0	2.0	42.6	21.4	Lynx SW	Lynx
including	711.2	711.6	0.4	206	100	Lynx SW	Lynx
OSK-W-20-2266	1027.4	1029.5	2.1	5.58		Triple Lynx	Triple Lynx
including	1028.7	1029.0	0.3	33.1		Triple Lynx	Triple Lynx
OSK-W-20-2266-W1	776.8	779.2	2.4	5.73		Triple Lynx	Triple Lynx
including	778.0	779.2	1.2	11.1		Triple Lynx	Triple Lynx
	797.3	799.3	2.0	3.08		Lynx_364	Triple Lynx
OSK-W-20-2266-W2	717.4	719.4	2.0	19.9		Lynx_363	Triple Lynx
OSK-W-20-2267	50.4	52.8	2.4	15.4		Bobcat	Bobcat
including	51.0	51.5	0.5	46.4		Bobcat	Bobcat
OSK-W-20-2268-W1	737.1	739.3	2.2	7.46		Triple Lynx	Triple Lynx
including	738.3	739.0	0.7	19.0		Triple Lynx	Triple Lynx
	819.0	821.3	2.3	27.4		Triple Lynx	Triple Lynx
including	819.0	820.0	1.0	45.7		Triple Lynx	Triple Lynx
	1027.0	1029.0	2.0	6.70		Triple Lynx	Triple Lynx
including	1027.4	1028.2	0.8	16.5		Triple Lynx	Triple Lynx
OSK-W-20-2268-W2	999.0	1001.0	2.0	5.08		Triple Lynx	Triple Lynx
OSK-W-20-2269	97.3	99.5	2.2	8.21		Bobcat	Bobcat
including	98.0	98.4	0.4	30.8		Bobcat	Bobcat
	518.2	520.6	2.4	3.37		Lynx SW	Lynx
	886.0	888.0	2.0	14.0		Lynx SW	Lynx
including	886.5	886.8	0.3	92.5		Lynx SW	Lynx
OSK-W-20-2271	809.6	815.2	5.6	6.69		Lynx	Lynx
including	814.2	815.2	1.0	17.4		Lynx	Lynx
	841.1	843.1	2.0	18.2		Lynx	Lynx
including	842.1	843.1	1.0	35.0		Lynx	Lynx
	877.0	879.0	2.0	5.36		Lynx	Lynx
including	877.9	878.2	0.3	27.8		Lynx	Lynx
OSK-W-20-2272	683.0	685.1	2.1	13.0		Triple Lynx	Triple Lynx
including	683.0	683.9	0.9	29.7		Triple Lynx	Triple Lynx
OSK-W-20-2273	706.7	708.7	2.0	8.32		Lynx_363	Triple Lynx
including	706.7	707.2	0.5	22.4		Lynx_363	Triple Lynx
	1013.8	1017.3	3.5	4.78		Triple Lynx	Triple Lynx
including	1015.1	1015.5	0.4	16.1		Triple Lynx	Triple Lynx
OSK-W-20-2280	1013.2	1016.7	3.5	5.23		Triple Lynx	Triple Lynx
including	1013.8	1014.2	0.4	26.7
and	1016.4	1016.7	0.3	11.3
	1084.7	1087.0	2.3	4.27		Triple Lynx	Triple Lynx
OSK-W-20-2280-W1	1090.0	1092.0	2.0	11.8		Triple Lynx	Triple Lynx
OSK-W-20-2282	308.4	310.8	2.4	6.13		Bobcat	Bobcat
including	309.0	309.5	0.5	16.6		Bobcat	Bobcat
OSK-W-20-2283	808.0	813.4	5.4	33.5	29.0	Triple Lynx	Triple Lynx
including	810.8	811.3	0.5	73.1
and	811.7	812.0	0.3	182	100
	819.0	821.0	2.0	7.27		Triple Lynx	Triple Lynx
including	819.6	820.0	0.4	24.1		Triple Lynx	Triple Lynx
	823.2	825.5	2.3	4.30		Triple Lynx	Triple Lynx
including	823.6	824.4	0.8	10.6		Triple Lynx	Triple Lynx
	1001.0	1003.2	2.2	44.8	23.6	Triple Lynx	Triple Lynx
including	1002.7	1003.2	0.5	194	100	Triple Lynx	Triple Lynx
	1018.0	1020.0	2.0	19.3		Triple Lynx	Triple Lynx
including	1018.9	1019.5	0.6	54.4		Triple Lynx	Triple Lynx
OSK-W-20-2288	467.0	469.8	2.8	8.13		Lynx SW	Lynx
including	467.0	467.4	0.4	38.9		Lynx SW	Lynx
OSK-W-20-2292	390.0	392.0	2.0	7.18		Lynx	Lynx
including	391.7	392.0	0.3	19.3		Lynx	Lynx
	835.4	837.8	2.4	4.47		Triple Lynx	Triple Lynx
	845.0	847.0	2.0	11.8		Lynx_361	Triple Lynx
including	845.8	846.3	0.5	41.0		Lynx_361	Triple Lynx
	882.0	884.0	2.0	8.01		Lynx_364	Triple Lynx
including	883.0	884.0	1.0	15.7		Lynx_364	Triple Lynx
	1007.2	1009.2	2.0	49.8	21	Lynx_372	Triple Lynx
including	1008.8	1009.2	0.4	244	100	Lynx_372	Triple Lynx
OSK-W-20-2295	651.2	658.0	6.8	12.4		Triple Lynx	Triple Lynx
including	652.4	652.7	0.3	28.7
and	653.4	654.0	0.6	45.9
and	656.1	656.7	0.6	56.9
	891.7	893.7	2.0	11.6		Lynx SW	Triple Lynx
including	891.7	892.7	1.0	23.0		Lynx SW	Triple Lynx
OSK-W-20-2295-W1	648.6	651.4	2.8	45.1	30.1	Triple Lynx	Triple Lynx
including	650.0	650.7	0.7	160	100	Triple Lynx	Triple Lynx
OSK-W-20-2298	169.0	171.7	2.7	7.41		Bobcat	Bobcat
including	169.0	169.7	0.7	20.2		Bobcat	Bobcat
	245.0	247.0	2.0	6.59		Bobcat	Bobcat
including	245.0	245.7	0.7	18.4		Bobcat	Bobcat
	373.0	375.0	2.0	16.7		Lynx SW	Lynx
including	373.8	374.3	0.5	65.2		Lynx SW	Lynx
OSK-W-20-2305	630.8	635.0	4.2	4.47		Triple Lynx	Triple Lynx
including	634.0	635.0	1.0	9.32		Triple Lynx	Triple Lynx
	876.0	878.3	2.3	10.7		Triple Lynx	Triple Lynx
including	877.6	878.3	0.7	31.6		Triple Lynx	Triple Lynx
	882.2	884.6	2.4	43.0	18.0	Triple Lynx	Triple Lynx
including	883.4	883.8	0.4	250	100	Triple Lynx	Triple Lynx
OSK-W-20-2306	137.8	140.0	2.2	4.30		Bobcat	Bobcat
	147.1	149.4	2.3	3.12		Bobcat	Bobcat
	275.0	277.3	2.3	8.58		Bobcat	Bobcat
including	275.8	276.5	0.7	20.7		Bobcat	Bobcat
	386.1	388.3	2.2	3.94		Lynx SW	Lynx
including	386.6	387.0	0.4	11.5		Lynx SW	Lynx
OSK-W-20-2307	689.6	691.9	2.3	142	75.8	Lynx_341	Lynx
including	690.0	690.4	0.4	413	100	Lynx_341	Lynx
OSK-W-20-2310	69.7	72.0	2.3	35.6	13.8	Mallard_5200	Mallard
including	70.8	71.1	0.3	267	100	Mallard_5200	Mallard
OSK-W-20-2312	85.0	87.3	2.3	7.19		Mallard	Mallard
including	85.7	86.2	0.5	25.4		Mallard	Mallard
OSK-W-20-2324	90.0	92.5	2.5	8.43		Mallard	Mallard
WST-20-0135	293.0	295.1	2.1	35.1	19.2	Lynx SW	Lynx
including	293.7	294.1	0.4	184	100	Lynx SW	Lynx
	351.8	354.7	2.9	3.15		Lynx SW	Lynx
including	351.8	352.3	0.5	8.55
and	354.1	354.7	0.6	7.76
	360.4	362.6	2.2	13.4		Triple Lynx	Triple Lynx
including	360.4	361.4	1.0	28.9		Triple Lynx	Triple Lynx
	397.3	399.4	2.1	23.6	14.5	Lynx SW	Lynx
including	397.8	398.1	0.3	164	100	Lynx SW	Lynx
WST-20-0318	377.4	379.6	2.2	8.05		Lynx SW	Lynx
	463.3	466.0	2.7	9.06		Lynx 4	Lynx
WST-20-0339	199.1	202.2	3.1	4.57		Lynx HW	Lynx
WST-20-0341A	306.1	308.2	2.1	86.0	19.9	Lynx SW	Lynx
including	306.1	306.5	0.4	447	100	Lynx SW	Lynx
	346.1	348.1	2.0	10.6		Lynx SW	Lynx
including	347.3	347.7	0.4	50.2		Lynx SW	Lynx
WST-20-0345	361.7	363.9	2.2	3.75		Caribou corridor	Caribou
including	362.3	363.1	0.8	9.43		Caribou corridor	Caribou
WST-20-0400	158.0	160.2	2.2	11.2		Lynx_301	Lynx
including	159.0	160.2	1.2	19.7		Lynx_301	Lynx
WST-20-0411	148.2	150.4	2.2	38.1	36.1	Lynx HW	Lynx
including	149.2	149.9	0.7	107	100	Lynx HW	Lynx
WST-20-0412	155.0	157.2	2.2	3.06		Lynx_328	Lynx
including	156.9	157.2	0.3	11.2		Lynx_328	Lynx
WST-20-0417	190.6	192.6	2.0	22.4		Lynx	Lynx
including	190.6	191.2	0.6	41.5		Lynx	Lynx
	428.2	430.2	2.0	4.06		Lynx 4	Lynx
WST-20-0423	125.0	127.0	2.0	5.23		Lynx	Lynx
including	125.0	125.7	0.7	14.9		Lynx	Lynx
WST-20-0459	204.3	206.4	2.1	20.6		Lynx SW	Lynx
including	205.9	206.4	0.5	76.2		Lynx SW	Lynx
WST-20-0462	171.0	173.0	2.0	40.4		Lynx	Lynx
including	171.5	172.5	1.0	79.1		Lynx	Lynx
	454.0	456.0	2.0	3.50		Lynx_336	Lynx
including	454.0	454.8	0.8	8.19		Lynx_336	Lynx
	638.9	643.2	4.3	3.82		Lynx	Lynx
including	638.9	639.6	0.7	12.6		Lynx	Lynx
WST-20-0470	86.2	88.2	2.0	73.8	15.0	Lynx	Lynx
including	87.5	87.8	0.3	492	100	Lynx	Lynx

Notes: True widths are estimated at 55 – 80% of the reported core length interval. See “Quality Control and Reporting Protocols” below. SW = Southwest.

DRILL HOLE LOCATION

Hole Number	Azimuth (°)	Dip (°)	Length (m)	UTM E	UTM N	Elevation	Section
OSK-W-17-1258	126	-51	1128	452972	5435211	416	3275
OSK-W-18-1727	331	-61	810	453461	5435040	396	3625
OSK-W-19-1857-W11	108	-58	1385	453525	5435704	405	4000
OSK-W-19-2100-W4	122	-47	1260	453095	5435726	423	3650
OSK-W-19-2101	18	-68	909	453426	5434779	396	3475
OSK-W-19-2169	130	-50	1268	453215	5435512	410	3650
OSK-W-19-2173	156	-46	234	452182	5435722	407	2850
OSK-W-19-2177	153	-51	396	452454	5435997	406	3225
OSK-W-20-2133-W2	118	-49	1139	453080	5435531	417	3525
OSK-W-20-2139-W7	115	-52	1164	452980	5435549	420	3450
OSK-W-20-2139-W8	115	-52	1125	452980	5435549	420	3450
OSK-W-20-2139-W10	115	-52	1212	452980	5435549	420	3450
OSK-W-20-2170-W6	128	-59	1407	453425	5435657	413	3900
OSK-W-20-2197-W2	121	-48	1064	453087	5435526	417	3550
OSK-W-20-2217-W2	134	-48	893	452944	5435565	418	3425
OSK-W-20-2217-W3	134	-48	1128	452944	5435565	418	3425
OSK-W-20-2249	132	-56	759	452775	5435192	411	3100
OSK-W-20-2250	132	-57	1064	453129	5435505	419	3575
OSK-W-20-2250-W1	132	-57	1060	453129	5435505	419	3575
OSK-W-20-2250-W2	132	-57	1134	453129	5435505	419	3575
OSK-W-20-2250-W3	132	-57	1170	453129	5435505	419	3575
OSK-W-20-2250-W4	132	-57	1005	453129	5435505	419	3575
OSK-W-20-2252-W2	129	-54	1194	453241	5435694	415	3750
OSK-W-20-2252-W3	129	-53	1062	453241	5435694	415	3750
OSK-W-20-2253	128	-54	924	452831	5435326	413	3225
OSK-W-20-2256	125	-51	1179	453160	5435686	414	3675
OSK-W-20-2256-W2	125	-51	957	453160	5435686	414	3675
OSK-W-20-2260-W2	127	-48	1191	453201	5435667	413	3700
OSK-W-20-2263	128	-49	1029	452926	5435187	413	3225
OSK-W-20-2266	128	-55	1050	453067	5435478	418	3500
OSK-W-20-2266-W1	128	-55	1116	453067	5435478	418	3500
OSK-W-20-2266-W2	128	-55	1131	453067	5435478	418	3500
OSK-W-20-2267	135	-52	66	452972	5435210	416	3275
OSK-W-20-2268-W1	127	-55	1073	453148	5435488	418	3575
OSK-W-20-2268-W2	127	-55	1038	453148	5435488	418	3575
OSK-W-20-2269	133	-50	933	452972	5435210	416	3275
OSK-W-20-2271	120	-53	1247	453462	5435683	410	3950
OSK-W-20-2272	149	-45	1004	452967	5435265	412	3300
OSK-W-20-2273	129	-51	1059	453067	5435478	417	3500
OSK-W-20-2280	127	-58	1161	453304	5435639	415	3775
OSK-W-20-2280-W1	127	-58	1170	453304	5435639	415	3775
OSK-W-20-2282	148	-56	588	452875	5435181	409	3175
OSK-W-20-2283	135	-50	1151	452997	5435607	425	3500
OSK-W-20-2288	146	-51	749	452875	5435181	409	3175
OSK-W-20-2292	125	-54	1059	453037	5435563	420	3525
OSK-W-20-2295	132	-51	987	452938	5435472	415	3375
OSK-W-20-2295-W1	132	-51	960	452938	5435472	415	3375
OSK-W-20-2298	137	-50	596	452847	5435059	407	3100
OSK-W-20-2305	124	-55	911	453026	5435408	413	3425
OSK-W-20-2306	152	-55	531	452872	5435155	407	3175
OSK-W-20-2307	124	-54	878	453397	5435557	413	3825
OSK-W-20-2310	333	-51	144	451970	5434835	407	2225
OSK-W-20-2312	334	-51	192	451964	5434816	408	2225
OSK-W-20-2324	334	-51	167	451944	5434811	406	2200
WST-20-0135	187	-58	444	453226	5435125	134	3475
WST-20-0318	148	-52	502	453228	5435127	134	3475
WST-20-0339	146	-18	295	453410	5435229	114	3675
WST-20-0341A	163	-42	493	453228	5435126	134	3475
WST-20-0345	136	-21	401	452282	5434975	263	2575
WST-20-0400	167	16	172	453493	5435287	118	3775
WST-20-0411	156	38	171	453450	5435264	118	3725
WST-20-0412	164	24	165	453450	5435264	117	3725
WST-20-0417	138	-50	759	453228	5435126	134	3475
WST-20-0423	134	-18	142	453359	5435209	154	3625
WST-20-0459	153	-47	579	453227	5435126	135	3475
WST-20-0462	152	-53	680	453227	5435125	134	3475
WST-20-0470	158	9	184	453493	5435287	118	3775

Lynx Zone

Caribou Zone

Mineralization most commonly occurs in gold-bearing pyrite stockworks as well as semi-massive pyrite replacement zones associated with phyllic alteration (sericite-pyrite ± silica) with sulphides, pyrite dominated with minor chalcopyrite and sphalerite ranging from trace to up to 20%, and local visible gold. Mineralization is hosted in rhyolites or mafic-intermediate volcanics frequently at or near faults or the contact with felsic porphyritic intrusions.

F-Zone

Bobcat

Mineralization most commonly occurs in gold-bearing quartz-pyrite veins controlled by northeast trending faults and shears and to a lesser extent in minor crustiform quartz-tourmaline-ankerite-pyrite veins and pyrite replacement zones and stockwork. Mineralization is hosted in sheared mafic volcanics, rhyolites near faults, or at the contact with felsic porphyritic intrusions.

Mallard

Qualified Person

Quality Control and Reporting Protocols

About the Windfall Gold Deposit

The Windfall gold deposit is located between Val-d’Or and Chibougamau in Eeyou Istchee James Bay, Québec, Canada. The mineral resource defined by Osisko, as disclosed in the news release dated February 19, 2020 and supported by the technical report entitled “An updated mineral resource estimate for the Windfall Lake Project, Located in the Abitibi Greenstone Belt, Urban Township, Eeyou Istchee James Bay, Québec, Canada” and dated April 3, 2020 (with an effective date of January 3, 2020), and assuming a cut-off grade of 3.5 g/t, comprises 4,127,000 tonnes at 9.1 g/t Au (1,206,000 ounces) in the indicated mineral resource category and 14,532,000 tonnes at 8.40 g/t Au (3,938,000 ounces) in the inferred mineral resource category. The key assumptions, parameters and methods used to estimate the mineral resource estimate disclosed in the February 19,2020 news release are further described in the full technical report prepared by Micon International Limited (“Micon”) and BBA Inc (“BBA”), in accordance with NI 43-101 available on SEDAR (www.sedar.com) under the Corporation’s issuer profile. The Windfall gold deposit is currently one of the highest-grade resource-stage gold projects in Canada and has world-class scale. Mineralization occurs in three principal zones: Lynx, Main Zone, and Underdog. Mineralization is generally comprised of deformed sub-vertical zones plunging to the northeast. Vein-type or pyrite replacement-type styles of mineralization crosscut syn-volcanic host rocks and syn-deformation felsic porphyry intrusions and are spatially associated with the contacts of the intrusions. The deposit is well defined from surface to a depth of 1,200 metres and remains open along strike and at depth. Mineralization has been identified 30 metres from surface in some areas and as deep as 2,000 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% interest in the high-grade Windfall 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 2,700 square kilometres).

Cautionary Note Regarding Forward-Looking Information

CONTACT INFORMATION:

John Burzynski
Chief Executive Officer
Telephone (416) 363-8653

OSISKO INTERSECTS 115 G/T AU OVER 5.6 METRES AT WINDFALL

Posted on September 1, 2020November 8, 2023 by Yannick Fradette

(Toronto, September 1, 2020) Osisko Mining Inc. (OSK:TSX. “Osisko” or the “Corporation”) is pleased to provide new analytical results from the ongoing definition and expansion drill program at its 100% owned Windfall gold project located in the Abitibi greenstone belt, Urban Township, Eeyou Istchee James Bay, Québec.

Drilling is currently focused on the Lynx deposit, the main mineralized zones, and down plunge exploration in the central areas of the mineralized system. Osisko President and Chief Executive Officer John Burzynski commented: “We continue to be impressed with the strong results from Lynx, and are seeing good possibilities to extend the mineralization in the known zones. While we are focused on completing the infill drilling, the deposit continues to grow in the process.”

Infill results are presented below. Significant new analytical results from 96 intercepts in 38 new drill holes and 26 wedges include: 115 g/t Au over 5.6 metres and 25.6 g/t Au over 5.0 metres in OSK-W-20-2256-W2; 57.9 g/t Au over 3.6 metres in OSK-W-20-2139-W9; 94.4 g/t Au over 2.0 metres in WST-20-0389A; 54.4 g/t Au over 3.3 metres in OSK-W-20-2260-W2; 77.3 g/t Au over 2.3 metres in OSK-W-20-2268-W3; 42.8 g/t Au over 3.1 metresin OSK-W-20-2243-W4; 31.2 g/ Au over 4.1 metres OSK-W-20-2252-W2; 62.2 g/t Au over 2.0 metres in OSK-W-20-2299; and 47.4 g/t Au over 2.5 metres in WST-20-0471. Maps showing hole locations and full analytical results are available at www.osiskomining.com.

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Category: Windfall

OSISKO WINDFALL DRILLING STEPS OUT INTO MORE … GOLD

Drill hole location

OSISKO WINDFALL INFILL DRILLING: STILL GOOD

Drill hole location

OSISKO WINDFALL INFILL DRILL PROGRAM 2020 TOP 20 HIT PARADE

OSISKO WINDFALL INFILL DRILLING: VERY GOOD

Drill hole location

OSISKO INFILL DRILLING WINDFALL. GOOD.

Drill hole location

OSISKO WINDFALL INFILL DRILLING INTERSECTS SOME MORE GOLD

Drill hole location

OSISKO WINDFALL INFILL DRILLING RETURNS MORE OF THE SAME

Drill hole location

OSISKO INFILL DRILLING RETURNS HIGH GRADE AT WINDFALL

DRILL HOLE LOCATION

OSISKO STEP-OUT DRILLING EXPANDS HIGH GRADE AT WINDFALL

DRILL HOLE LOCATION

OSISKO INTERSECTS 115 G/T AU OVER 5.6 METRES AT WINDFALL

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