Author: Yannick Fradette

$250,000 Donation to University of New Brunswick

 

(Toronto – October 10, 2018) Osisko Mining Inc. (the “Company” or “Osisko”) (TSX:OSK) is pleased to announce that together with Osisko Gold Royalties and Osisko Metals Inc. have created the Osisko Field Education Fund in collaboration with the Earth Sciences Department at the University of New Brunswick (“UNB”).  Together the three companies have committed to donate a total of $250,000 to the program over the next five years.

 

The Osisko Field Education Fund is an effort that will yield a direct benefit to students within the Earth Sciences program, helping to fund UNB’s stratigraphy and geological mapping field school courses.

 

From Left to Right: Dr. Bob Quartermain Campaign Co-Chair, Dr. Mac Watson Campaign Cabinet Member, Jeff Hussey Osisko Metals, President & CEO and UNB Alumnus, and UNB President and Vice-Chancellor Eddy Campbell

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{4a519b2e1b7ee41c07b52bf609655ec62dee46aaa3d3e6dbc7220444390e11ca} in the high-grade Windfall Lake gold deposit located between Val-d’Or and Chibougamau in Québec and holds a 100{4a519b2e1b7ee41c07b52bf609655ec62dee46aaa3d3e6dbc7220444390e11ca} undivided interest in a large area of claims in the surrounding Urban Barry area and nearby Quevillon area (over 3,300 square kilometres), a 100{4a519b2e1b7ee41c07b52bf609655ec62dee46aaa3d3e6dbc7220444390e11ca} interest in the Marban project located in the heart of Québec’s prolific Abitibi gold mining district, and properties in the Larder Lake Mining Division in northeast Ontario, including the Jonpol and Garrcon deposits on the Garrison property, the Buffonta past producing mine and the Gold Pike mine property. The Corporation also holds interests and options in a number of additional properties in northern Québec and Ontario.

 

For further information please contact:

John Burzynski
President and Chief Executive Officer

Telephone: (416) 363-8653

Windfall Infill Drilling Continues to Confirm High-Grade

(Toronto, October 2, 2018)  Osisko Mining Inc. (OSK:TSX. “Osisko” or the “Corporation”) is pleased to provide new infill drilling results from the ongoing drill definition and expansion program at its 100% owned Windfall Lake gold project located in the Abitibi greenstone belt, Urban Township, Eeyou Istchee James Bay, Québec. The 800,000 metre drill program commenced in late 2015. The program is currently focussed on infill drilling within the main Windfall gold deposit and the adjacent Lynx deposit (located immediately NE of Windfall), exploration and expansion drilling on the main mineralized zones, and deep hole exploration in the central areas of the intrusive system.

 

Significant new analytical results from 63 intercepts in 39 drill holes and one wedge focused on infill drilling are presented below.

Highlights from the new results include: 49.1 g/t Au over 6.6 metres in OSK-W-18-1551; 79.9 g/t Au over 2.0 metres in OSK-W-18-1672; 57.6 g/t Au over 2.7 metres in OSK-W-18-1698; 45.5 g/t Au over 3.3 metres in OSK-W-18-1638 and 57.7 g/t Au over 2.1 metres in OSK-W-18-1536-W1. 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	Type	Mineralized Zone
OSK-W-17-852	712.0	714.0	2.0	10.0		infill	Caribou
including	712.5	715.8	0.3	42.4
OSK-W-18-1454	486.8	490.1	3.3	45.5		infill	Lynx
including	486.8	487.6	0.8	97.1
and	489.6	490.1	0.5	79.4
OSK-W-18-1522	271.2	275.8	4.6	11.5		infill	Lynx
including	271.2	271.8	0.6	58.1
OSK-W-18-1536-W1	341.7	343.8	2.1	57.7	53.1	infill	Lynx
including	341.7	342.8	1.1	109	100
OSK-W-18-1543	269.0	271.1	2.1	3.41		infill	Zone 27
OSK-W-18-1551	249.7	256.3	6.6	49.1	33.8	infill	Lynx
including	253.8	255.6	1.8	154	97.5
OSK-W-18-1587	345.8	347.8	2.0	21.3		infill	Lynx
including	345.8	346.8	1.0	40.7
OSK-W-18-1627	439.6	442.0	2.4	15.2		Infill	Lynx
OSK-W-18-1630	41.9	44.0	2.1	3.59		infill	Caribou
including	41.9	42.4	0.5	14.3
OSK-W-18-1632	47.0	49.8	2.8	5.51		infill	Caribou
OSK-W-18-1655	285.0	287.0	2.0	21.5	20.1	infill	Caribou
including	285.6	286.0	0.4	107	100
OSK-W-18-1661	246.8	249.0	2.2	6.23		infill	Caribou
including	247.2	247.6	0.4	29.1
OSK-W-18-1662	237.0	239.0	2.0	3.55		infill	Zone 27
OSK-W-18-1665	68.7	71.3	2.6	3.60		infill	Caribou
including	71.0	71.3	0.3	15.9
OSK-W-18-1667	556.8	559.0	2.2	21.7		infill	Lynx
including	557.1	558.0	0.9	53.1
OSK-W-18-1669	54.0	56.1	2.1	4.15		infill	Caribou
including	55.3	55.8	0.5	16.0
OSK-W-18-1672	55.8	58.0	2.2	4.31		infill	Caribou
	307.1	309.1	2.0	79.9	27.1	infill	Zone 27
including	308.6	309.1	0.5	311	100
OSK-W-18-1673	464.0	466.0	2.0	20.4		infill	Lynx
including	465.0	465.6	0.6	66.1
	473.0	476.0	3.0	7.23		infill	Lynx
including	473.7	474.4	0.7	21.9
	479.0	481.5	2.5	7.34		infill	Lynx
including	479.7	480.8	1.1	15.4
	518.7	521.1	2.4	25.2		infill	Lynx
including	519.1	519.9	0.8	73.4
OSK-W-18-1674	340.4	343.0	2.6	3.53		infill	Zone 27
OSK-W-18-1675	193.8	195.8	2.0	3.63		infill	Lynx
OSK-W-18-1680	91.0	94.0	3.0	10.9		infill	Caribou
including	91.0	92.0	1.0	23.1
	101.2	104.0	2.8	5.13		infill	Caribou
	261.0	263.0	2.0	3.84		infill	Caribou
	279.6	281.6	2.0	14.4		infill	Zone 27
including	279.6	280.1	0.5	52.1
	299.1	306.6	7.5	3.21		infill	Zone 27
including	304.3	306.6	2.3	5.85
OSK-W-18-1681	517.0	519.0	2.0	11.9		infill	Lynx
including	517.5	517.8	0.3	76.9
	538.5	541.0	2.5	8.06		infill	Lynx
including	540.0	541.0	1.0	18.9
OSK-W-18-1684	312.5	314.6	2.1	3.73		infill	Lynx
OSK-W-18-1685	361.0	365.1	4.1	7.01		infill	Zone 27
including	361.0	363.0	2.0	11.9
	368.7	371.8	3.1	7.56		infill	Zone 27
including	369.5	370.5	1.0	19.7
	377.5	380.0	2.5	32.3		infill	Zone 27
including	378.8	380.0	1.2	56.9
OSK-W-18-1686	124.0	126.4	2.4	9.95		infill	Zone 27
including	125.5	125.8	0.3	47.2
OSK-W-18-1687	552.8	556.0	3.2	3.49		infill	Lynx
OSK-W-18-1689	67.4	70.7	3.3	6.78		infill	Zone 27
including	67.4	68.4	1.0	16.9
	86.4	88.4	2.0	3.62		infill	Zone 27
OSK-W-18-1690	17.5	20.0	2.5	6.51		infill	Zone 27
including	17.9	18.3	0.4	24.7
OSK-W-18-1691	44.9	47.0	2.1	3.30		infill	Caribou
OSK-W-18-1692	114.0	116.0	2.0	18.5		infill	Caribou
including	114.4	115.0	0.6	57.9
	176.3	178.8	2.5	4.30		infill	Caribou
including	178.0	178.8	0.8	11.4
OSK-W-18-1695	321.3	323.9	2.6	3.01		infill	Caribou
including	321.3	321.9	0.6	9.45
	330.0	332.3	2.3	5.39		infill	Caribou
including	330.7	331.6	0.9	13.5
	510.1	512.2	2.1	4.57		infill	Zone 27
OSK-W-18-1696	127.5	131.9	4.4	3.48		infill	Lynx
including	127.5	127.8	0.3	11.9
	348.9	351.0	2.1	4.77		infill	Lynx
OSK-W-18-1697	108.9	111.1	2.2	4.24		infill	Lynx
including	109.5	110.1	0.6	15.3
OSK-W-18-1698	241.8	243.8	2.0	5.75		infill	Caribou
	246.1	248.8	2.7	57.6	50	infill	Caribou
including	247.2	248.0	0.8	126	100
OSK-W-18-1699	82.0	84.0	2.0	5.05		infill	Lynx
	97.9	101.4	3.5	7.26		infill	Lynx
	126.3	131.9	5.6	7.25		infill	Bobcat
	138.7	140.7	2.0	18.4		infill	Bobcat
including	139.7	140.7	1.0	36.6
OSK-W-18-1701	186.6	188.6	2.0	29.0		infill	Bobcat
OSK-W-18-1702	293.0	295.0	2.0	30.3		infill	Caribou
including	294.0	295.0	1.0	60.5
	307.8	310.1	2.3	3.21		infill	Caribou
including	307.8	308.4	0.6	12.1
	349.8	351.8	2.0	7.51		infill	Caribou
including	350.8	351.8	1.0	15.0
	498.0	502.8	4.8	5.58		infill	Zone 27
OSK-W-18-1704	577.0	579.0	2.0	14.2		infill	Lynx
OSK-W-18-1707	268.0	270.4	2.4	3.02		infill	Caribou
OSK-W-18-1709	499.0	501.0	2.0	17.4		infill	Zone 27

 

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

 

 

Hole Number	Azimuth (°)	Dip (°)	Length (m)	UTM E	UTM N	Section
OSK-W-17-852	330	-55	1356	452874	5434552	2875
OSK-W-18-1454	145	-53	1089	453376	5435452	3750
OSK-W-18-1522	331	-58	360	453413	5434904	3525
OSK-W-18-1536-W1	337	-65	417	453428	5434975	3575
OSK-W-18-1543	327	-52	294	452252	5434639	2375
OSK-W-18-1551	335	-53	291	453422	5434924	3550
OSK-W-18-1587	332	-62	360	453451	5435009	3600
OSK-W-18-1627	141	-51	513	453229	5435372	3600
OSK-W-18-1630	330	-45	207	452306	5434658	2425
OSK-W-18-1632	329	-47	390	452341	5434668	2475
OSK-W-18-1655	351	-45	375	452088	5434441	2150
OSK-W-18-1661	353	-45	393	452104	5434436	2150
OSK-W-18-1662	6	-52	303	452016	5434501	2100
OSK-W-18-1665	347	-46	375	452104	5434436	2150
OSK-W-18-1667	141	-48	573	453260	5435472	3675
OSK-W-18-1669	3	-47	405	452059	5434455	2125
OSK-W-18-1672	345	-46	333	452039	5434455	2100
OSK-W-18-1673	135	-46	567	453260	5435472	3675
OSK-W-18-1674	345	-45	378	452102	5434436	2150
OSK-W-18-1675	136	-45	420	453306	5435331	3625
OSK-W-18-1680	332	-48	372	452350	5434621	2450
OSK-W-18-1681	143	-46	570	453259	5435473	3675
OSK-W-18-1684	143	-46	390	453493	5435405	3825
OSK-W-18-1685	330	-52	414	452350	5434621	2450
OSK-W-18-1686	141	-50	159	452098	5434820	2325
OSK-W-18-1687	141	-49	588	453344	5435502	3750
OSK-W-18-1689	150	-54	135	452177	5434814	2400
OSK-W-18-1690	142	-49	141	452190	5434821	2400
OSK-W-18-1691	338	-59	78	452251	5434568	2350
OSK-W-18-1692	329	-52	450	452407	5434632	2500
OSK-W-18-1695	329	-52	520	452418	5434562	2475
OSK-W-18-1696	142	-45	453	453481	5435423	3825
OSK-W-18-1697	328	-61	231	453022	5434874	3175
OSK-W-18-1698	329	-53	513	452430	5434608	2525
OSK-W-18-1699	327	-64	174	452970	5434884	3125
OSK-W-18-1701	328	-66	207	452968	5434844	3100
OSK-W-18-1702	330	-50	534	452418	5434561	2475
OSK-W-18-1704	137	-50	627	453349	5435524	3775
OSK-W-18-1707	329	-49	447	452450	5434658	2550
OSK-W-18-1709	330	-51	525	452399	5434512	2450

 

OSK-W-17-852 intersected 10.0 g/t Au over 2.0 metres in Caribou. Mineralization consists of local visible gold, traces pyrite and quartz-carbonate veins hosted in a sericite altered andesite in contact with a felsic porphyritic dike.

 

OSK-W-18-1454 intersected 45.5 g/t Au over 3.3 metres in Lynx. Mineralization consists of up to 8% pyrite-silica flooding, quartz-tourmaline veins and local visible gold within a sericite, fuchsite and silica altered rhyolite.

 

OSK-W-18-1522 intersected 11.5 g/t Au over 4.6 metres in Lynx. Mineralization consists of 2% pyrite stringers, trace pyrite clusters and local visible gold within weak pervasive silica flooding hosted in a sericite, silica and fuchsite altered rhyolite.

 

OSK-W-18-1536-W1 intersected 57.7 g/t Au over 2.1 metres in Lynx. Mineralization consists of 3% pyrite at the contact of quartz-carbonate vein hosted in a chloritized gabbro.

 

OSK-W-18-1543 intersected 3.41 g/t Au over 2.1 metres in Zone 27. Mineralization consists of local visible gold in a quartz-carbonate vein cross-cutting a large pyrite stringer, 5-7% pyrite stringers hosted in a strongly bleached andesite.

 

OSK-W-18-1551 intersected 49.1 g/t Au over 6.6 metres in Lynx. Mineralization consists of up to 5% pyrite stringers, 5% disseminated pyrite, pyrite-silica flooding and local visible gold at the contact between a strong silica and moderate fuchsite altered rhyolite and a fragmental felsic dike.

 

OSK-W-18-1587 intersected 21.3 g/t Au over 2.0 metres in Lynx. Mineralization consists of 10% pyrite-silica flooding, 3% pyrite clusters and quartz-tourmaline veins within strong sericite altered gabbro.

 

OSK-W-18-1627 intersected 15.2 g/t Au over 2.4 metres in Lynx. Mineralization consists of 1% pyrite stringers, trace disseminated pyrite and quartz-carbonate veins hosted in strong carbonate, weak chlorite altered gabbro.

 

OSK-W-18-1630 intersected 3.59 g/t Au over 2.1 metres in Caribou. Mineralization consists of 10% semi massive pyrite over 50 centimetres, 3% pyrite stringers, 1% disseminated pyrite hosted in a sericite and silica altered rhyolite.

 

OSK-W-18-1632 intersected 5.51 g/t Au over 2.8 metres in Caribou. Mineralization consists of 10% pyrite stringer within silica patches and 5% pyrite clusters hosted in a sericite altered felsic porphyritic intrusion.

 

OSK-W-18-1655 intersected 21.5 g/t Au over 2.0 metres in Caribou. Mineralization consists of 10% disseminated pyrite hosted in a moderate sericite and carbonate altered felsic porphyritic dike.

 

OSK-W-18-1661 intersected 6.23 g/t Au over 2.2 metres in Caribou. Mineralization consists of up to 20% pyrite stringers, 10% ptygmatic tourmaline veins, and trace sphalerite within a moderate sericite, chlorite and carbonate altered felsic dike.

 

OSK-W-18-1662 intersected 3.55 g/t Au over 2.0 metres in Zone 27. Mineralization consists of 10% pyrite-tourmaline stringers within a sericite and silica altered rhyolite.

 

OSK-W-18-1665 intersected 3.60 g/t Au over 2.6 metres in Caribou. Mineralization consists of up to 15% pyrite stringers, 1% pyrite-silica flooding, trace sphalerite and crustiform quartz veins hosted in moderate sericite and chlorite altered rhyolite.

 

OSK-W-18-1667 intersected 21.7 g/t Au over 2.2 metres in Lynx. Mineralization consists of local visible gold, up to 5% disseminated pyrite stringer with pervasive silica flooding and a crustiform vein hosted in a strong silica and moderate fuchsite altered gabbro.

 

OSK-W-18-1669 intersected 4.15 g/t Au over 2.1 metres in Caribou. Mineralization consists of 3% pyrite stringers and trace sphalerite within a moderate sericite and silica altered porphyritic felsic dike.

 

OSK-W-18-1672 intersected 4.31 g/t Au over 2.2 metres in Caribou and 79.9 g/t Au over 2.0 metres in Zone 27. The first interval is composed of trace disseminated pyrite clusters, a 60 centimetre quartz vein hosted in a sericitized porphyritic felsic dike. The second interval is composed of local visible gold with massive pyrite, intense silica flooding, 3% pyrite clusters and 3% pyrite in quartz-tourmaline veins. Mineralization is hosted in a bleached, silicified and strongly sericitized fragmental intrusion.

 

OSK-W-18-1673 intersected 20.4 g/t Au over 2.0 metres, 7.23 g/t Au over 3.0 metres, 7.34 g/t Au over 2.5 metres and 25.2 g/t Au over 2.4 metres in Lynx. The first interval contains 10% pyrite stringers and 5% pyrite clusters hosted in a strong sericite altered rhyolite. The second interval is composed of 2% pyrite stringers with local pervasive silica flooding at the contact between a gabbro and a rhyolite. The third interval is composed of 4% disseminated pyrite with pervasive silica flooding within a sericite and silica altered rhyolite. The last interval contains 3% disseminated pyrite in pervasive silica flooding, 2% pyrite clusters, 1% pyrite stringers and trace pyrite in a crustiform quartz vein. Mineralization is hosted in a strong silica and weak fuchsite altered gabbro.

 

OSK-W-18-1674 intersected 3.53 g/t Au over 2.6 metres in Zone 27. Mineralization consists of up to 25% pyrite with tourmaline stringers hosted in a strongly sericitized and bleached andesite.

 

OSK-W-18-1675 intersected 3.63 g/t Au over 2.0 metres in Lynx. The interval contains up to 10% disseminated pyrite, stringers and clusters with pervasive silica flooding in a strong silica and moderate sericite altered fragmental felsic intrusion.

 

OSK-W-18-1680 intersected five intervals: 10.9 g/t Au over 3.0 metres, 5.13 g/t Au over 2.8 metres and 3.84 g/t Au over 2.0 metres in Caribou; 14.4 g/t Au over 2.0 metres and 3.21 g/t Au over 7.5 metres in Zone 27. The first interval is composed of 5% pyrite in fracture filling, 1% pyrite and trace sphalerite with quartz-carbonate veins and traces disseminated pyrite hosted in a faulted, moderate fuchsite and patchy silica altered rhyolite. The second interval contains 25% pyrite in a semi-massive band, 2% pyrite with pervasive silica flooding in a silicified rhyolite. The third interval is composed of 1% pyrite-tourmaline stringers, trace pyrite with quartz clusters hosted in a sericite altered porphyritic felsic dike. The fourth interval is composed of 2% disseminated pyrite and tourmaline within a moderate to strong sericite altered rhyolite. The last interval contains 8% pyrite disseminated and clusters, 3% pyrite stringers and trace chalcopyrite within quartz-carbonate veins hosted in strong sericite altered rhyolite and felsic porphyritic dike.

 

OSK-W-18-1681 intersected 11.9 g/t Au over 2.0 metres and 8.06 g/t Au over 2.5 metres in Lynx. The first interval contains up to 5% disseminated pyrite in quartz-tourmaline veins and ptygmatic tourmaline veinlets hosted in a silicified gabbro. The second interval contains up to 3% pyrite-silica flooding within strong silica and moderate fuchsite altered gabbro.

 

OSK-W-18-1684 intersected 3.73 g/t Au over 2.1 metres in Lynx. Mineralization consists of 5% disseminated pyrite with 10% quartz clusters hosted in a moderate chlorite and carbonate altered gabbro.

 

OSK-W-18-1685 intersected three intervals in Zone 27: 7.01 g/t Au over 4.1 metres, 7.56 g/t Au over 3.1 metres and 32.3 g/t Au over 2.5 metres. The first interval consists of 7% disseminated pyrite and trace pyrite stringer in a strongly bleached and sericitized andesite. The second interval is composed of 7% disseminated pyrite and trace pyrite stringers hosted in a moderate sericite altered felsic porphyritic intrusion. The last interval contains 10% pyrite clusters, 1% pyrite stingers and trace pyrite-tourmaline stringers hosted in a moderate chlorite and sericite altered andesite.

 

OSK-W-18-1686 intersected 9.95 g/t Au over 2.4 metres in Zone 27. Mineralization consists of 50% semi-massive pyrite and 5% disseminated sphalerite with fragmental quartz-carbonate veinlets hosted in a sericitized and silicified fragmental felsic dike and rhyolite.

 

OSK-W-18-1687 intersected 3.49 g/t Au over 3.2 metres in Lynx. Mineralization consists of up to 5% pyrite hosted in two crustiform veins of 10 and 20 centimetres wide within a moderate sericite and moderate fuchsite altered gabbro.

 

OSK-W-18-1689 intersected 6.78 g/t Au over 3.3 metres and 3.62 g/t Au over 2.0 metres in Zone 27. Both intervals contain up to 30% pyrite and pyrite-tourmaline stringers hosted in silica and sericite altered felsic porphyritic intrusion in contact with a rhyolite.

 

OSK-W-18-1690 intersected 6.51 g/t Au over 2.5 metres in Zone 27. Mineralization consists of up to 15% pyrite stringers with disseminated tourmaline hosted in silicified rhyolite.

 

OSK-W-18-1691 intersected 3.30 g/t Au over 2.1 metres in Caribou. Mineralization is composed of 1% pyrite stringers and traces disseminated pyrite in a bleached and sericitized andesite.

 

OSK-W-18-1692 intersected 18.5 g/t Au over 2.0 metres and 4.30 g/t Au 2.5 metres in Caribou. The first interval contains 7% pyrite and trace sphalerite infilling fractures within a fault zone hosted in a felsic porphyritic intrusion. The second interval contains up to 5% pyrite stringers, 1% pyrite associated with pervasive silica flooding, 1% pyrite in fractures filling within faulted, moderate sericite altered rhyolite.

 

OSK-W-18-1695 intersected three intervals: 3.01 g/t Au over 2.6 metres, 5.39 g/t Au over 2.3 metres in Caribou and 4.57 g/t Au over 2.1 metres in Zone 27. The first interval contains 5% pyrite stringers and 30% massive pyrite in a decimetre-scale band hosted in a silica and sericite altered rhyolite in contact with a bleached andesite. The second interval is composed of 10% pyrite stringers hosted in moderate bleach, weak chlorite and silica altered andesite. The last interval contains 10% pyrite with pervasive silica flooding, pyrite stockwork with disseminated tourmaline and 15% massive pyrite over 25 centimetres hosted in strongly silicified and bleached andesite.

 

OSK-W-18-1696 intersected 3.48 g/t Au over 4.4 metres and 4.77 g/t Au over 2.1 metres in Lynx. The first interval contains up to 7% pyrite with quartz carbonate veins, up to 5% pyrite stringers, 3% disseminated pyrite and 3% pyrite fragments hosted in a bleached, sericitized and fuchsite altered gabbro. The second interval contains up to 15% fine-grained pyrite stringers, trace pyrite-tourmaline stringers, 2% pyrite clusters with local quartz-carbonate veinlets hosted in a moderate chlorite, sericite and fuchsite altered gabbro.

 

OSK-W-18-1697 intersected 4.24 g/t Au over 2.2 metres in Lynx. Mineralization consists of up to 5% disseminated pyrite in strong pervasive silica alteration and within 20 centimetre wide crustiform vein hosted in a porphyritic felsic dike.

 

OSK-W-18-1698 intersected two intervals in Caribou: 5.75 g/t Au over 2.0 metres and 57.6 g/t Au over 2.7 metres. The first interval contains up to 5% pyrite stringers with pervasive silica flooding and 1% disseminated pyrite within strong silica and sericite altered rhyolite in contact with a felsic dike. The second interval contains up to 5% interstitial pyrite with pervasive silica flooding hosted in a moderate sericite altered porphyritic felsic dike.

 

OSK-W-18-1699 intersected four intervals: 5.05 g/t Au over 2.0 metres and 7.26 g/t Au over 3.5 metres in Lynx; 7.25 g/t Au over 5.6 metres and 18.4 g/t au over 2.0 metres in Bobcat. The first interval is composed of up to 5% disseminated pyrite and clusters with moderate pervasive silica alteration in 2 metre wide crustiform vein at the contact with a felsic dike. The second interval contains up to 10% pyrite-silica flooding, and quartz crustiform veins within a strong silica altered felsic dike. The third interval contains up to 10% disseminated pyrite in a strong silica alteration overprinted by quartz crustiform vein in a gabbro. The last interval contains trace disseminated pyrite and quartz-carbonate vein in a strongly chloritized gabbro.

 

OSK-W-18-1701 intersected 29.0 g/t Au over 2.0 metres in Bobcat. Mineralization consists of up to 5% pyrite-silica flooding within a strong silica altered felsic porphyritic intrusion.

 

OSK-W-18-1702 intersected four intervals: 30.3 g/t Au over 2.0 metres, 3.21 g/t Au over 2.3 metres and 7.51 g/t Au over 2.0 metres in Caribou; and 5.58 g/t au over 4.8 metres in Zone 27. The first interval is composed of traces pyrite stringer and pyrite-tourmaline stringer in a moderate sericite altered rhyolite. The second interval contains 8% disseminated pyrite within a moderate chlorite altered rhyolite. The third interval contains 1% disseminated pyrite within weak sericite altered andesite. The last interval contains up to 10% pyrite stringers, 2% ptygmatic tourmaline veins and local visible gold hosted at the contact between a moderate bleach, sericite and silica altered andesite and a felsic dike.

 

OSK-W-18-1704 intersected 14.2 g/t Au over 2.0 metres in Lynx. Mineralization consists of up to 10% disseminated pyrite and 2% pyrite stringers within moderate chlorite, weak silica and sericite altered gabbro.

 

OSK-W-18-1707 intersected 3.02 g/t Au over 2.4 metres in Caribou. Mineralization consists of up to 10% pyrite with quartz veins hosted in a moderate chlorite altered gabbro.

 

OSK-W-18-1709 intersected 17.4 g/t Au over 2.0 metres in Zone 27. Mineralization consists of 10% pyrite clusters and 3% pyrite stringers within a moderate sericite and weak silica altered felsic porphyritic intrusion.

Qualified Person

The scientific and technical content of this news release has been reviewed, prepared and approved by Mr. Louis Grenier, M.Sc.A., P.Geo. (OGQ 800), Project Manager of 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

True width determination is currently unknown but is estimated at 65-80% 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 or present a higher percentage of pyrite than surrounding intervals. Selected samples are also analyzed for multi-elements, including silver, using an Aqua Regia-ICP-AES method at ALS Laboratories. Drill program design, Quality Assurance/Quality Control (“QA/QC”) and interpretation of results is performed by qualified persons employing a QA/QC program consistent with NI 43-101 and industry best practices. Standards and blanks are included with every 20 samples for QA/QC purposes by the Corporation as well as the lab. Approximately 5% of sample pulps are sent to secondary laboratories for check assay.

 

About the Windfall Lake Gold Deposit

The Windfall Lake gold deposit is located between Val-d’Or and Chibougamau in the Abitibi region of Québec, Canada. The mineral resource defined by Osisko, as disclosed in the Windfall Lake Technical Report (as defined below), comprises 2,382,000 tonnes at 7.85 g/t Au (601,000 ounces) in the indicated mineral resource category and 10,605,000 tonnes at 6.70 g/t Au (2,284,000 ounces) in the inferred mineral resource category. For details regarding the key assumptions, parameters and methods used to estimate the mineral resources presented in respect of the Windfall Lake gold project, please see the technical report entitled “Technical Report and Mineral Resource Estimate for the Windfall Lake Project, Windfall Lake and Urban-Barry Properties” and dated June 12, 2018 (effective date of May 14, 2018), which has been prepared by InnovExplo Inc. from Val-d’Or, Québec (the “Windfall Lake Technical Report”). The Windfall Lake Technical Report is available on Osisko’s website at www.osiskomining.com and on SEDAR under Osisko’s issuer profile at www.sedar.com). The Windfall Lake gold deposit is currently one of the highest grade resource-stage gold projects in Canada. Mineralization occurs in four principal zones: Lynx, Zone 27, Caribou and Underdog. All zones comprise sub-vertical lenses following intrusive porphyry contacts plunging to the northeast. The deposit is well defined from surface to a depth of 900 metres and remains open along strike and at depth. Mineralization has been identified 30 metres from surface in some areas and as deep as 2000 metres in others, with significant potential to extend mineralization down-plunge and at depth.

About Osisko Mining Inc.

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

Cautionary Note Regarding Forward-Looking Information

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

 

For further information please contact:

John Burzynski
President and Chief Executive Officer

Telephone: (416) 363-8653

Infill Drilling Continues to Confirm High-Grade

 

(Toronto, September 28, 2018)  Osisko Mining Inc. (OSK:TSX. “Osisko” or the “Corporation”) is pleased to provide new results from the ongoing infill drilling program at its 100% owned Osborne-Bell gold deposit located 15 kilometres northwest of the town of Lebel-sur-Quévillon, Québec. The 50,000-metre program combines definition and expansion drilling at Osborne-Bell and the surrounding Quévillon property area.  The Osborne-Bell deposit remains open at depth.  To date approximately 24,100 metres of infill drilling have been completed over the main Osborne-Bell deposit.

 

Significant new analytical results from 22 intercepts in 18 drill holes are presented below. Highlights from the new results include: 37.0 g/t Au over 5.4 metres in OSK-OB-18-051; 38.6 g/t Au over 2.5 metres in OSK-OB-18-011; 41.1 g/t Au over 2.4 metres in OSK-OB-18-086 and 26.6 g/t Au over 4.6 metres in OSK-OB-18-010. 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	Type	Mineralized Zone
OSK-OB-18-010	144.7	149.3	4.6	26.6		infill	2-650
including	144.7	146.0	1.3	43.8
OSK-OB-18-011	171.0	176.3	5.3	5.25		infill	2-650
including	174.0	175.0	1.0	12.3
OSK-OB-18-011	195.7	198.2	2.5	38.6	29.0	infill	2-650
including	195.7	196.4	0.7	135	100
OSK-OB-18-019	425.0	428.0	3.0	15.2		infill	2-652
OSK-OB-18-023	287.0	289.0	2.0	13.0		Infill	2-651
OSK-OB-18-043	149.5	155.8	6.3	10.9		infill	2-650
including	155.0	155.8	0.8	52.3
OSK-OB-18-051	167.6	173.0	5.4	37.0	34.7	infill	2-652
including	170.0	171.0	1.0	113	100
OSK-OB-18-055	59.9	62.9	3.0	11.8		infill	2-651
including	59.9	60.9	1.0	18.8
OSK-OB-18-057	105.6	107.7	2.1	26.4		infill	2-650
OSK-OB-18-064	117.6	121.0	3.4	7.26		infill	2-651
including	117.6	118.6	1.0	19.8
OSK-OB-18-069	129.0	138.0	9.0	6.18		infill	2-652
including	131.1	132.2	1.1	26.9
OSK-OB-18-070	134.0	136.1	2.1	38.0		infill	2-652
OSK-OB-18-070	138.9	142.2	3.3	14.2		infill	2-652
OSK-OB-18-073	128.2	132.3	4.1	8.20		infill	2-652
including	130.4	131.0	0.6	38.0
OSK-OB-18-073	136.7	139.3	2.6	29.4		infill	2-652
including	137.0	137.3	0.3	92.4
OSK-OB-18-075	175.0	178.0	3.0	19.6		infill	2-652
including	175.0	175.8	0.8	52.5
OSK-OB-18-077	132.2	134.5	2.3	8.28		infill	3-653
including	132.5	133.0	0.5	18.4
OSK-OB-18-082	168.5	174.5	6.0	3.32		infill	3-653
OSK-OB-18-086	208	210.4	2.4	41.1	39.1	infill	3-551
including	208.0	209.0	1.0	95.0	90.2
OSK-OB-18-088	102.7	109.4	6.7	3.90		infill	3-654
including	103.9	104.4	0.5	21.8
OSK-OB-18-088	152.9	156.0	3.1	11.0		infill	3-653
including	152.9	153.3	0.4	79.6
OSK-OB-18-098	15.9	18.3	2.4	13.4		infill	3-652
including	15.9	17.0	1.1	27.2

 

 

 

Hole Number	Azimuth (°)	Dip (°)	Length (m)	UTM E	UTM N	Section
OSK-OB-18-010	204	-63	232	340985	5444043	1975E
OSK-OB-18-011	196	-53	274	341027	5444098	2000E
OSK-OB-18-019	196	-62	565	341140	5444258	2075E
OSK-OB-18-023	189	-53	450	341057	5444209	2000E
OSK-OB-18-043	199	-65	210	341005	5444053	2000E
OSK-OB-18-051	181	-60.	204	341098	5444097	2075E
OSK-OB-18-055	196	-49.	136	340953	5444027	1950E
OSK-OB-18-057	187	-58	126	340922	5444024	1925E
OSK-OB-18-064	196	-47	204	340967	5444091	1950E
OSK-OB-18-069	194	-51	200	341069	5444124	2025E
OSK-OB-18-070	194	-52	168	341088	5444119	2050E
OSK-OB-18-073	193	-55	182	341115	5444096	2075E
OSK-OB-18-075	194	-50	210	341217	5444117	2175E
OSK-OB-18-077	196	-48	216	341265	5444131	2225E
OSK-OB-18-082	196	-47	209	341447	5444042	2425E
OSK-OB-18-086	182	-47	303	341464	5444076	2425E
OSK-OB-18-088	195	-47	192	341461	5444017	2425E
OSK-OB-18-098	191	-45	71	341239	5443973	2250E

 

OSK-OB-18-010 intersected zone 2-650 averaging 26.6 g/t Au over 4.6 metres. Mineralization consists of local visible gold, up to 5% finely disseminated pyrite and trace pyrrhotite in an andesite with weak carbonate alteration.

 

OSK-OB-18-011 intersected 5.25 g/t Au over 5.3 metres and 38.6 g/t Au over 2.5 metres in zone 2-650. Mineralization consist of up to 10% clustered pyrite in a fragmented andesite with irregular felsic fragments.

 

OSK-OB-18-019 intersected 15.2 g/t Au over 3.0 metres in zone 2-652. The interval contains 2% disseminated pyrite in a felsic volcanic rock with moderate sericite and potassic alteration.

 

OSK-OB-18-023 intersected 13.0 g/t Au over 2.0 metres in zone 2-651. Mineralization consists of 5% disseminated pyrite and up to 3% pyrrhotite in a silica-biotite-sericite altered andesite.

 

OSK-OB-18-043 intersected 10.9 g/t Au over 6.3 metres in zone 2-650. Mineralization consists of local visible gold on the margin of quartz-carbonate-chlorite veins, up to 7% disseminated pyrite, trace chalcopyrite and sphalerite in an andesite with a penetrative silica and potassic alteration.

OSK-OB-18-051 intersected 37.0 g/t Au over 5.4 metres in zone 2-652. Mineralization consists of 2% pyrite stringers and trace chalcopyrite stringers in a strongly sericitized porphyritic rhyodacite with weak chloritization.

OSK-OB-18-055 intersected 11.8 g/t Au over 3.0 metres in zone 2-651. Mineralization includes up to 5% pyrite clusters in association with dismembered quartz-chlorite-carbonate veinlets, 2% pyrite stringers, 2% pyrrhotite clusters and trace chalcopyrite in an andesite with moderate sericitization and carbonatation.

OSK-OB-18-057 intersected 26.4 g/t Au over 2.1 metres in zone 2-650. Mineralization consists of up to 6% disseminated pyrite in an andesite strongly altered in sericite, biotite and chlorite.

OSK-OB-18-064 intersected 7.26 g/t Au over 3.4 metres in zone 2-651. Mineralization consists of up to 4% pyrite and 1% pyrrhotite in clusters and stringers and trace pyrite associated with dismembered quartz-chlorite-carbonates veinlets in a strongly sericitized andesite.

OSK-OB-18-069 intersected 6.18 g/t Au over 9.0 metres in zone 2-652. Mineralization consists of 3% pyrite, trace pyrrhotite and trace chalcopyrite as clusters and in association with quartz-carbonate veins. Mineralization is hosted in silica and sericite altered quartz-phyric rhyodacite.

OSK-OB-18-070 intersected 14.2 g/t Au over 3.3 metres and 38.0 g/t Au over 2.1 metres in zone 2-652. Mineralization consists of 2% pyrite dissemination, 1% sphalerite at the margin of quartz-carbonate veins in a moderately sericitized rhyodacite.

OSK-OB-18-073 intersected two intervals: 8.20 g/t Au over 4.1 metres and 29.4 g/t Au over 2.6 metres in zone 2-652.  The first interval contains 5% of interstitial pyrite, locally trace to 20% chalcopyrite at the contact between a sericitized rhyodacite and a chloritized andesite. The second interval contains local visible gold associated with 2% pyrite and 1% chalcopyrite in stringers and clusters in a quartz-phyric rhyodacite with sericite and biotite alteration.

OSK-OB-18-075 intersected 19.6 g/t Au over 3.0 metres in zone 2-652.  Mineralization consists of local visible gold, 8% pyrite, 1% sphalerite and trace disseminated chalcopyrite in a strongly sericitized and silicified porphyritic rhyodacite.

OSK-OB-18-077 intersected 8.28 g/t Au over 2.3 metres in zone 3-653.  Mineralization consists of 5% chalcopyrite, 2% pyrite and trace sphalerite in a sericitized andesite.

OSK-OB-18-082 intersected 3.32 g/t Au over 6.0 metres in zone 3-653.  Mineralization consists of 3% pyrite stringers and clusters, trace chalcopyrite in stringers hosted in quartz porphyritic rhyodacite.

OSK-OB-18-086 intersected 41.1 g/t Au over 2.4 metres in zone 3-551. Mineralization consists of up to 5% pyrite stringers, 1% disseminated chalcopyrite and trace sphalerite in a strongly sericitized quartz-phyric rhyodacite.

 

OSK-OB-18-088 intersected 3.90 g/t Au over 6.7 metres in zone 3-654 and 11.0 g/t Au over 3.1 metres in zone 3-653.  The first interval contains up to 6% pyrite and 2% chalcopyrite in stringers hosted in an andesite altered in biotite and sericite.  The second interval contains local visible gold, 2% pyrite stringers and 1% sphalerite in chlorite-carbonate veinlets. Mineralization is hosted in a strongly sericitized and silicified porphyritic rhyodacite.

OSK-OB-18-098 intersected 13.4 g/t Au over 2.4 metres in zone 3-652.  Mineralization consists of 1% disseminated pyrite and stringers in sericite and chlorite altered quartz-phyric rhyodacite.

Qualified Person

The scientific and technical content of this news release has been reviewed, prepared and approved by Mr. Pascal Simard, P.Eng. (OIQ 5002937), Director of Northern Exploration for projects in Quebec, who is a “qualified person” as defined by National Instrument 43-101 – Standards of Disclosure for Mineral Projects (“NI 43-101”).

 

Quality Control and Reporting Protocols

True width determination is currently unknown but is estimated at 65-80% 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 Columbia. The 1-kilogram screen assay method is selected by the geologist when samples contain coarse gold or present a higher percentage of pyrite than surrounding intervals. All samples are also analyzed for multi-elements, using an Aqua Regia-ICP-AES method at ALS Laboratories. Drill program design, Quality Assurance/Quality Control (“QA/QC”) and interpretation of results is performed by qualified persons employing a QA/QC program consistent with NI 43-101 and industry best practices. Standards and blanks are included with every 20 samples for QA/QC purposes by the Corporation as well as the lab.

 

About the Osborne-Bell Gold Deposit

The Osborne-Bell gold deposit is located 15 kilometres northwest of the town of Lebel-sur-Quevillon in the Abitibi region of Québec, Canada. The mineral resource defined by Osisko, as disclosed in the Osborne-Bell Technical Report (as defined below), comprises 2,587,000 tonnes at 6.13 g/t Au (510,000 ounces) in the inferred mineral resource. Mineralization occurs in nine (9) individuals mineralized zones:1-551, 1-651, 1-653, 2-650, 2-652, 3-551, 3-552, 3-652, 3-653. All zones comprise sub-vertical lenses following intermediate and felsic volcanic rocks plunging to the northeast. The deposit is well defined from surface to a depth of 300 metres. For details regarding the key assumptions, parameters and methods used to estimate the mineral resources presented in respect of the Osborne-Bell gold project, please see the technical report entitled “Technical Report and Mineral Resource Estimate – Osborne-Bell deposit, Quévillon property ” and dated April 23, 2018 (effective date of March 2, 2018), which has been prepared by InnovExplo Inc. from Val-d’Or, Québec (the “Osborne-Bell Technical Report”). The Osborne-Bell Technical Report is available on Osisko’s website at www.osiskomining.com and on SEDAR under Osisko’s issuer profile at www.sedar.com. For details regarding the PEA refer to “Preliminary Economic Assessment of the Windfall Lake Project, Lebel-sur-Quévillon, Québec, Canada” and dated August 1, 2018 (effective date of July 12, 2018), has been prepared for Osisko by BBA Inc., InnovExplo Inc., Golder Associates Ltd., WSP Canada Inc. and SNC-Lavalin Stavibel Inc. (the Windfall PEA). The Windfall PEA which includes the Osborne Bell Deposit is available on SEDAR (www.sedar.com) under Osisko’s issuer profile.

About Osisko Mining Inc.

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

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 discussions with respect to predictions, expectations, interpretations, beliefs, plans, projections, objectives, assumptions, future events or performance (often but not always using phrases such as “expects”, or “does not expect”, “is expected”, “interpreted”, “management’s view”, “anticipates” or “does not anticipate”, “plans”, “budget”, “scheduled”, “forecasts”, “estimates”, “believes” or “intends” or variations of such words and phrases or stating that certain actions, events or results “may” or “could”, “would”, “might” or “will” be taken to occur or be achieved) are not statements of historical fact and may be forward-looking information and are intended to identify forward-looking information. This news release contains the forward-looking information pertaining to, among other things, the timing and ability of Osisko to file a technical report in respect of this resource estimate; the prospects of the Osborne-Bell gold deposit; the potential for the Osborne-Bell gold deposit being a significant deposit; the potential future mill site for the Windfall Lake gold deposit; the timing and ability of Osisko, if at all, to publish a resource update for Windfall-Lynx; the projected capital expenditures of mining activities at the Osborne-Bell gold deposit; upgrading a inferred mineral resource to a measured mineral resource or indicated mineral resource categories; the significance of historic exploration activities and results. This forward-looking information is based on reasonable assumptions and estimates of management of the Corporation, at the time it was made, involves known and unknown risks, uncertainties and other factors which may cause the actual results, performance or achievements of Osisko to be materially different from any future results, performance or achievements expressed or implied by such forward-looking information. Such factors include, among others, risks relating to the ability of exploration activities (including drill results) to accurately predict mineralization; errors in management’s geological modelling; the ability of Osisko to complete further exploration activities, including drilling; property interests in the Quévillon project and the Osborne-Bell 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.

For further information please contact:

John Burzynski
President and Chief Executive Officer

Telephone: (416) 363-8653

(Toronto, September 27, 2018)  Osisko Mining Inc. (OSK:TSX. “Osisko” or the “Corporation”) is proud to recognize and congratulate Robert Wares, one of the original founders of the Osisko group companies on the announcement of his donation of $5 million to McGill University in Montréal, Québec.  The following is an excerpt from yesterday’s McGill press release.

 

As an entrepreneurial geologist, Bob Wares, (BSc’79, DSc’12), became a mining rock star when he discovered one of Canada’s largest gold deposits in the Abitibi region of Quebec. Now, he is bringing that Midas touch to his alma mater in the form of a landmark $5 million gift that will support research programs, fellowships, innovative research, a lecture series and outreach efforts in McGill University’s Faculty of Science, with a particular focus on his home department, Earth and Planetary Sciences (EPS).

 

The gift will provide immediate impact for students and faculty in five targeted areas:

 

– the Wares Science Innovation Prospectors Fund, designed to support innovative, high-risk research by funding up to four promising projects a year from researchers across the Faculty of Science;

 

– a Recruitment and Outreach Coordinator Fund, supporting the activities of a coordinator to liaise with CEGEPs and high schools in an effort to attract more students to EPS studies at McGill;

 

– the Wares Field Study Fund, supporting field studies in Canada and abroad for EPS students;

 

– the Wares Postdoctoral Fellowships, which will provide funding for up to four EPS postdoctoral fellows each year pursuing earth science research.

 

– an Annual Lecture Fund, to bring globally renowned keynote speakers to Montreal to discuss earth science topics or areas of research.

 

“We would like to thank Bob Wares for this exceptional gift and for his continued support of McGill,” said Suzanne Fortier, Principal and Vice-Chancellor of McGill University. “This donation will make an immediate impact on our Faculty of Science and will greatly enhance important research, education and out-of-classroom student experiences in the Department of Earth and Planetary Sciences.

 

A graduate of EPS, Wares has been a longtime supporter of McGill, contributing to the Faculties of Science and Medicine. In 2009, Wares and his company, Osisko Mining Corporation, contributed $4.1 million to endow two faculty research awards, undergraduate and graduate level scholarships and a field trip fund in the Department of Earth and Planetary Sciences, with part of the gift matched by the J.W. McConnell Family Foundation. Wares has supported McGill every year since 2009 and his latest gift brings his total McGill support to date to over $10 million. As a volunteer and member of the Faculty of Science Advisory Board, he has also been exceptionally generous with his time and insights.

 

“Bob has had a tremendous impact on our Faculty and I am grateful for his involvement, his ideas, and his perspective as a business leader,” said Bruce Lennox, Dean of the Faculty of Science. “His continuing commitment to our students and researchers is an invaluable asset, particularly to Earth and Planetary Sciences.”

 

A mining industry leader and innovator, Wares has been dubbed a ‘rock star’ in the field because of his remarkable success in assessing, finding and launching various mining exploration projects over the course of his 40-year career. Together with two associates, he founded Osisko Mining Corporation in 2003, and, against all odds, the fledging company eventually developed the Canadian Malartic mine, which, to this day, remains the largest single gold producer in Canada, with initial reserves of 11 million ounces of gold. In 2012, Wares received an Honorary Doctorate from McGill in recognition of his achievements in the field of applied economic geology.

 

“I’m very pleased to have this opportunity to support McGill, the Faculty of Science and EPS,” said Wares, who is currently Executive Vice-President of the new Osisko Mining and Executive Chairman of Osisko Metals. “I’m particularly pleased to support field trips and experiential education, which are so important to students in Earth and Planetary Sciences.”

NOT FOR DISTRIBUTION TO U.S. NEWS WIRE SERVICES OR FOR DISSEMINATION IN THE UNITED STATES

(Toronto, September 18, 2018) – Osisko Mining Inc. (TSX:OSK) (“Osisko” or the “Corporation”) is pleased to announce, further to its announcements on August 15, 2018 and August 16, 2018, that it has completed a “bought deal” brokered private placement of (i) an aggregate of 27,046,031 common shares of the Corporation that will qualify as “flow-through shares” (within the meaning of subsection 66(15) of the Income Tax Act (Canada) and, where applicable, section 359.1 of the Taxation Act (Québec)) (“Flow-Through Shares”) for aggregate gross proceeds of approximately $69.9 million, and (ii) an aggregate of 3,823,000 common shares of the Corporation (“Common Shares”) at an issue price of $1.70 per Common Share for aggregate gross proceeds of approximately $6.5 million, including the exercise in full of the underwriters’ option (the “Offering”). The Flow-Through Shares were issued in two tranches, whereby the first tranche consisted of 14,035,088 Flow-Through Shares at an issue price of $2.85 per “tranche one” Flow-Through Share and the second tranche consisted of 13,010,943 “tranche two” Flow-Through Shares at an issue price of $2.30 per Flow-Through Share. The total proceeds of the Offering are approximately $76.4 million.

The Offering was led by Canaccord Genuity Corp. on behalf of a syndicate of underwriters that included Haywood Securities Inc., Macquarie Capital Markets Canada Ltd. and National Bank Financial Inc.

The gross proceeds from the sale of Flow-Through Shares will be used by the Corporation to incur eligible “Canadian exploration expenses” that will qualify as “flow-through mining expenditures” (within the meaning of Income Tax Act (Canada)) related to Osisko’s projects in Québec on or prior to December 31, 2019 for renunciation to subscribers of Flow-Through Shares effective December 31, 2018. The net proceeds from the sale of Common Shares will be used to fund exploration activities and for general corporate purposes.

All securities issued under the Offering will be subject to a hold period expiring four months and one day from the date hereof. The securities offered have not been registered under the U.S. Securities Act of 1933, as amended, and may not be offered or sold in the United States absent registration or an applicable exemption from the registration requirements. This press release shall not constitute an offer to sell or the solicitation of an offer to buy nor shall there be any sale of the securities in any State in which such offer, solicitation or sale would be unlawful.

 

 

The following “insiders” of the Corporation have subscribed for Flow-Through Shares under the Offering:

Insider	Insider Relationship	Flow-Through Shares Purchased (#)	Subscription Amount ($)
John Burzynski	Director and Senior Officer of Osisko; Director of 10% Securityholder of Osisko	25,000	$57,500
Sean Roosen	Director of Osisko; Director and Senior Officer of 10% Securityholder of Osisko	75,000	$172,500
José Vizquerra	Director and Senior Officer of Osisko	25,000	$57,500
Robert Wares	Senior Officer of Osisko	500,000	$1,150,000
Bryan Coates	Senior Officer of 10% Securityholder of Osisko	65,500	$150,650
Mathieu Savard	Senior Officer of Osisko	10,000	23,000
André Gaumond	Director of 10% Securityholder of Osisko	122,310	$281,313
	Totals	822,810	$1,892,463

Each subscription by an “insider” is considered to be a “related party transaction” for purposes of Multilateral Instrument 61-101 – Protection of Minority Security Holders in Special Transactions (“MI 61-101“). Pursuant to MI 61-101, the Corporation has filed a material change report providing disclosure in relation to each “related party transaction” on SEDAR under Osisko’s issuer profile at www.sedar.com. The Corporation did not file the material change report more than 21 days before the expected closing date of the Offering as the details of the Offering and the participation therein by each “related party” of the Corporation were not settled until shortly prior to the closing of the Offering, and the Corporation wished to close the Offering on an expedited basis for sound business reasons. The Corporation is relying on exemptions from the formal valuation and minority shareholder approval requirements available under MI 61-101. The Corporation is exempt from the formal valuation requirement in section 5.4 of MI 61-101 in reliance on section 5.5(a) of MI 61-101 as the fair market value of the transaction, insofar as it involves interested parties, is not more than the 25% of the Corporation’s market capitalization. Additionally, the Corporation is exempt from minority shareholder approval requirement in section 5.6 of MI 61-101 in reliance on section 5.7(b) of MI 61-101 as the fair market value of the transaction, insofar as it involves interested parties, is not more than the 25% of the Corporation’s market capitalization.

About Osisko Mining Inc.

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

 

 

Cautionary Note Regarding Forward-Looking Information

This news release contains “forward-looking information” within the meaning of applicable Canadian securities legislation based on expectations, estimates and projections as at the date of this news release. Forward-looking information involves risks, uncertainties and other factors that could cause actual events, results, performance, prospects and opportunities to differ materially from those expressed or implied by such forward-looking information. Forward-looking information in this news release includes, but is not limited to, the use of proceeds of the Offering; the timing and ability of the Corporation, if at all, to obtain final approval of the Offering from the Toronto Stock Exchange; the tax treatment of the Flow-Through Shares; the timing of the tax renunciation to the subscribers; objectives, goals or future plans; statements regarding exploration results and exploration plans. Factors that could cause actual results to differ materially from such forward-looking information include, but are not limited to, capital and operating costs varying significantly from estimates; the preliminary nature of metallurgical test results; delays in obtaining or failures to obtain required governmental, environmental or other project approvals; uncertainties relating to the availability and costs of financing needed in the future; changes in equity markets; inflation; fluctuations in commodity prices; delays in the development of projects; the other risks involved in the mineral exploration and development industry; and those risks set out in the Corporation’s public documents filed on SEDAR at www.sedar.com. Although the Corporation believes that the assumptions and factors used in preparing the forward-looking information in this news release are reasonable, undue reliance should not be placed on such information, which only applies as of the date of this news release, and no assurance can be given that such events will occur in the disclosed time frames or at all. The Corporation disclaims any intention or obligation to update or revise any forward-looking information, whether as a result of new information, future events or otherwise, other than as required by law.

For further information please contact:

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

17.4 g/t Au Over 13.7 Metres (including 26.3 g/t Au over 6.5 Metres)

6.31 g/t Au Over 12.5 Metres (including 21.1 g/t Au Over 3.2 Metres)

(Toronto, September 13, 2018)  Osisko Mining Inc. (OSK:TSX. “Osisko” or the “Corporation”) is pleased to provide new results from the ongoing deep-hole program at its 100% owned Windfall Lake gold project located in the Abitibi greenstone belt, Urban Township, Eeyou Istchee James Bay, Québec.

 

In May 2018 Osisko commenced two deep exploration drill holes (“Deep Underdog” and “Deep Lynx”) to investigate the potential for depth extensions of the Lynx and Underdog mineralized zones, as well as to further test the intrusion-related geological model for the Windfall deposit at depths of approximately 2000 metres to 2500 metres from surface.

 

New drilling has confirmed and expanded the Triple 8 discovery (see Osisko news release dated July 11^th, 2018). Wedge hole OSK-W-18-1603-W2 intersected a zone of sericite and silica alteration over 85 metres containing sulfides and zones of gold mineralization from approximately 1485 metres to approximately 1570 metres downhole.  This alteration zone includes two significant gold bearing intervals located between approximately 1510 to 1554 metres downhole. The new wedge extends the Triple 8 zone by 50 metres to the south from the discovery hole OSK-W18-1603.  Triple 8 geometry is still being interpreted, however the zone appears to remain open in all directions.  Previously drilled wedge OSK-W-18-1603-W1 intersected a fault zone and porphyritic intrusive in the anticipated Triple 8 area.  Maps and sections showing the location of the two new wedges and their relation to the Triple 8 discovery are provided on the Corporation’s website. The Triple 8 Zone falls well outside the area of the recently announced Windfall mineral resource estimate (see Osisko news release dated May 14^th, 2018).

 

Osisko President and CEO John Burzynski commented:  “Today’s follow-up results from the new wedge hole in the Triple 8 discovery are a great confirmation that there is significant high-grade gold at depth in the Windfall intrusive system.  What we find very exciting is that the Triple 8 alteration zone now extends over 85 metres wide, on a scale we haven’t seen before at Windfall, indicating that we may be approaching a main source of the mineralizing system.  We are confident that as we progress with drilling the deeper sections of the Windfall deposit we will continue to have discovery success.”

 

Sericite and silica alteration begins within the host andesite and gabbro package at approximately 1434 metres, increasing in intensity to a strongly altered zone between 1485 metres to 1570 metres. Alteration is found peripheral to a felsic stock dipping 40° to the north-east and shows the same chlorite – biotite +/- garnet alteration encountered in the Triple 8 discovery hole.  Exact geometries and relationships between the mineralization and the emplacement of the felsic stock have yet to be determined. The Triple 8 Zone appears to be sub-vertical with a 70 degree dip and is oriented NNE at 030 degrees. Mineralization consists of semi-massive and stringer pyrite with local visible gold and strong silica alteration. The zones contain minor sphalerite, chalcopyrite, pyrrhotite, and trace arsenopyrite. A number of minor mineralized intervals were encountered in the hanging wall and the footwall of the main mineralized corridor (assays pending).

 

Today’s results include the currently available significant analytical results from OSK-18-1603-W2.  Maps showing the drill hole location and analytical results are available at www.osiskomining.com.

 

Hole No.	From (m)	To (m)	Interval (m)	Au (g/t) uncut	Au (g/t) cut to 100 g/t	Mineralized Area
OSK-W-18-1603-W2	1510.3	1524.0	13.7	17.4		Triple 8
including	1510.3	1512.8	2.5	23.2
including	1517.5	1524.0	6.5	26.3
OSK-W-18-1603-W2	1538.4	1550.9	12.5	6.31		Triple 8
including	1547.7	1550.9	3.2	21.1

 

Hole Number	Azimuth (°)	Dip (°)	Length (m)	UTM E	UTM N	Section
OSK-W-18-1603-W2	35	-80	1741.0	453340	5434543	3275

 

OSK-W-18-1603-W2

Gold mineralization in the main alteration corridor (1485 metres to 1570 metres downhole) is hosted in a pervasive altered andesite and is subdivided into two intervals which correspond to the Triple 8 Zone. The first interval, from 1510.3 metres to 1524.0 metres is hosted in strong pervasive silica and moderate sericite alteration. Mineralization consists of up to 35% pyrite stringers, local semi-massive pyrite, trace chalcopyrite, sphalerite, arsenopyrite and local visible gold. The second interval extends from 1538.4 metres to 1550.9 metres and contains up to 30% pyrite stringers, up to 20% pyrite-tourmaline veins, trace sphalerite and local visible gold within a strong silica and moderate sericite altered andesite.

 

Qualified Person

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

 

Quality Control and Reporting Protocols

True width determination for the Triple 8 Zone is currently undetermined but is estimated at 65-80% of the reported core length intervals. Assays are uncut except where indicated. Intercepts occur within geological confines of a major zone but have not been correlated to individual vein domain at this time. All NQ core assays reported were obtained by either 1-kilogram screen fire assay or standard 50-gram fire-assaying-AA finish or gravimetric finish at (i) ALS Laboratories in Val d’Or, Québec, Thunder Bay, Ontario, Sudbury, Ontario or Vancouver, British Colombia, or (ii) Bureau Veritas in Timmins, Ontario. The 1-kilogram screen assay method is selected by the geologist when samples contain coarse gold or present a higher percentage of pyrite than surrounding intervals. Selected samples are also analyzed for multi-elements, including silver, using an Aqua Regia-ICP-AES method at ALS Laboratories. Drill program design, Quality Assurance/Quality Control (“QA/QC”) and interpretation of results are performed by a “qualified person” employing a QA/QC program consistent with NI 43-101 and industry best practices. Standards and blanks are included with every 20 samples for QA/QC purposes by the Corporation as well as the lab. Approximately 5% of sample pulps are sent to secondary laboratories for check assay.

 

About the Windfall Lake Gold Deposit

The Windfall Lake gold deposit is located between Val-d’Or and Chibougamau in the Abitibi region of Québec, Canada. The mineral resource defined by Osisko comprises 2,382,000 tonnes at 7.85 g/t Au (601,000 ounces) in the indicated resource category and 10,605,000 tonnes at 6.70 g/t Au (2,284,000 ounces) in the inferred resource category. See the technical report, entitled “Technical Report and Mineral Resource Estimate for the Windfall Lake Project, Windfall Lake and Urban-Barry Properties” and dated June 12, 2018 (effective date of May 14, 2018), which has been prepared for Osisko by InnovExplo Inc. from Vald’Or, Québec, and is available on SEDAR (www.sedar.com) under Osisko’s issuer profile. The Windfall Lake gold deposit is currently one of the highest grade resource-stage gold projects in Canada. Mineralization occurs in four principal zones: Lynx, Zone 27, Caribou, and Underdog. All zones comprise sub-vertical lenses following intrusive porphyry contacts plunging to the northeast. The deposit is well defined from surface to a depth of 900 metres and remains open along strike and at depth. Mineralization has been identified only 30 metres from surface in some areas and as deep as 1,200 metres in others, with significant potential to extend mineralization down-plunge and at depth.

About Osisko Mining Inc.

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

Cautionary Note Regarding Forward-Looking Information

This news release contains “forward-looking information” within the meaning of the applicable Canadian securities legislation that is based on expectations, estimates, projections and interpretations as at the date of this news release. The information in this news release about the Windfall Lake gold deposit being one of the highest grade resource-stage gold projects in Canada; the discovery, grade, mineralization and potential of the Triple 8 Zone, if any; the significance of the deep exploration drill holes,(including the new wedge holes described in this news release, if any; the openness of the Triple 8 Zone; the correlation with the Triple 8 Zone with any known zone; the significance of management’s geological modelling and interpretation of interim drill results; the significance of new results from the ongoing drill program at the Windfall Lake gold project; the significance of assay results presented in this news release; the type of drilling included in the drill program (definition, expansion and exploration drilling in and around the main Windfall Lake gold deposit and the adjacent Lynx deposit, and exploration drilling on the greater deposit and Urban-Barry project area); potential mineralization; the potential to extend mineralization up and down-plunge and at depth at the Windfall Lake gold deposit; the ability to realize upon any mineralization in a manner that is economic; the ability to complete any proposed exploration activities and the results of such activities, including the continuity or extension of any mineralization; and any other information herein that is not a historical fact may be “forward-looking information”. Any statement that involves discussions with respect to predictions, expectations, interpretations, beliefs, plans, projections, objectives, assumptions, future events or performance (often but not always using phrases such as “expects”, or “does not expect”, “is expected”, “interpreted”, “management’s view”, “anticipates” or “does not anticipate”, “plans”, “budget”, “scheduled”, “forecasts”, “estimates”, “believes” or “intends” or variations of such words and phrases or stating that certain actions, events or results “may” or “could”, “would”, “might” or “will” be taken to occur or be achieved) are not statements of historical fact and may be forward-looking information and are intended to identify forward-looking information. While this forward-looking information is based on reasonable assumptions and estimates of management as of the date hereof, such forward-looking information inherently involves known and unknown risks, uncertainties and other factors which may cause the actual results, performance or achievements of Osisko to be materially different from any future results, performance or achievements expressed or implied by such forward-looking information. Such factors include, among others, risks relating to the ability of exploration activities (including drill results) to accurately predict mineralization; errors in management’s geological modelling; the ability of Osisko to complete further exploration activities, including drilling; property interests in the Windfall Lake gold project; the ability of the Corporation to obtain required approvals and complete transactions on terms announced; the results of exploration activities; risks relating to mining activities; the global economic climate; metal prices; dilution; environmental risks; and community and non-governmental actions. Although the forward-looking information contained in this news release is based upon what management believes, or believed at the time, to be reasonable assumptions. Osisko cannot assure shareholders and prospective purchasers of securities of the Corporation that actual results will be consistent with such forward-looking information, as there may be other factors that cause results not to be as anticipated, estimated or intended, and neither Osisko nor any other person assumes responsibility for the accuracy and completeness of any such forward-looking information, Osisko does not undertake, and assumes no obligation, to update or revise any such forward-looking statements or forward-looking information contained herein to reflect new events or circumstances, except as may be required by law.

 

For further information please contact:

John Burzynski. President and Chief Executive Officer

Telephone: (416) 363-8653

 

NOT FOR DISTRIBUTION TO UNITED STATES NEWSWIRE SERVICES OR FOR DISSEMINATION IN THE UNITED STATES

 

Montréal, Québec and Toronto, Ontario (September 7, 2018) – Beaufield Resources Inc. (TSX-V: BFD) (“Beaufield“) and Osisko Mining Inc. (TSX: OSK) (“Osisko“) are pleased to announce that Beaufield has obtained an interim order from the Superior Court of Québec (the “Interim Order“) today in support of Osisko’s acquisition of Beaufield, which will be completed by way of a plan of arrangement under the Canada Business Corporations Act (the “Arrangement“). Details of the Arrangement are included in a joint press release of Beaufield and Osisko disseminated on August 14, 2018 (entitled “Osisko Mining to Acquire Beaufield Resources”).

The Interim Order, among other things, authorizes Beaufield to call and hold a special meeting of shareholders (the “Meeting“) to adopt a special resolution approving the Arrangement in accordance with the Canada Business Corporations Act. The Meeting will be held at 11:00 a.m. (EDT) on October 12, 2018 at the offices of Lavery, de Billy L.L.P., 1, Place Ville Marie, Suite 4000, Montréal, Québec.

Full details of the Arrangement will be included in Beaufield’s management information circular (the “Beaufield Circular“) expected to be mailed to shareholders of Beaufield the week of September 17, 2018 in connection with the Meeting. The Beaufield Circular, letter of transmittal and related proxy materials will, in due course, be available on SEDAR (www.sedar.com) under Beaufield’s issuer profile.

About Beaufield Resources Inc.

Beaufield is a mineral exploration company with its exploration activity focused in Québec and Ontario. Please refer to Beaufield’s website at www.beaufield.com to view the Beaufield’s properties in Urban, Eléonore-Opinaca, Tortigny, Hemlo and Launay.

 

For further information about Beaufield please contact:
Ronald Stewart
President and Chief Executive Officer
Telephone: (514) 842 3443

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{4a519b2e1b7ee41c07b52bf609655ec62dee46aaa3d3e6dbc7220444390e11ca} in the high-grade Windfall Lake gold deposit located between Val-d’Or and Chibougamau in Québec and holds a 100{4a519b2e1b7ee41c07b52bf609655ec62dee46aaa3d3e6dbc7220444390e11ca} undivided interest in a large area of claims in the surrounding Urban Barry area and nearby Quevillon area (over 3,300 square kilometres), a 100{4a519b2e1b7ee41c07b52bf609655ec62dee46aaa3d3e6dbc7220444390e11ca} interest in the Marban project located in the heart of Québec’s prolific Abitibi gold mining district, and properties in the Larder Lake mining division in northeast Ontario, including the Jonpol and Garrcon deposits on the Garrison property, the Buffonta past producing mine and the Gold Pike mine property. Osisko also holds interests and options in a number of additional properties in northern Québec and Ontario.

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

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this news release. No stock exchange, securities commission or other regulatory authority has approved or disapproved of the information contained herein.

(Toronto, August 27, 2018) Osisko Mining Inc. (TSX:OSK) (the “Corporation” or “Osisko“) today announces that it has filed an early earning report in respect of its holdings in Kilo Goldmines Inc. (“Kilo“) as a result of the expiry, on August 25, 2018, of 5,000,000 common shares purchase warrants of Kilo (“Warrants“) held by the Corporation (the “Warrant Expiration“).

Prior to giving effect to the Warrant Expiration, the Corporation owned or controlled 19,100,000 Warrants, representing approximately 10.1% of the issued and outstanding common shares of Kilo (“Common Shares“) on a partially-diluted basis, after giving effect only to the exercise of the 19,100,000 Warrants held by the Corporation.

After giving effect to the Warrant Expiration, the Corporation owns or controls 14,100,000 Warrants, representing approximately 7.7% of the issued and outstanding Common Shares on a partially-diluted basis, after giving effect only to the exercise of the 14,100,000 Warrants held by the Corporation.

Osisko reviews its holdings from time to time and may increase or decrease its position as future circumstances may dictate. Osisko, after reviewing market and other conditions, permitted the 5,000,000 Warrants to expire, unexercised. The 5,000,000 Warrants were “out-of-the money”.

This news release is being issued in accordance with National Instrument 62-103 – The Early Warning System and Related Take-Over Bid and Insider Reporting Issues in connection with the filing of an early warning report dated August 27, 2018. The early warning report has been filed on the System for Electronic Document Analysis and Review (“SEDAR“) under Kilo’s issuer profile at www.sedar.com. To obtain a copy of the early warning report filed by Osisko, please contact John Burzynski at (416) 363-8653 or refer to SEDAR under Kilo’s issuer profile at www.sedar.com.

For further information, please contact Osisko Mining Inc.:

 

John Burzynski President and Chief Executive Officer Osisko Mining Inc. 155 University Avenue Toronto, ON M5H 3B7 Telephone: (416) 363-8653

510 g/t Au Over 5.2 Metres in Lynx
742 g/t Au Over 2.2 Metres in Zone 27

NOT FOR DISTRIBUTION TO UNITED STATES NEWSWIRE SERVICES OR FOR DISSEMINATION IN THE UNITED STATES

(Toronto, August 22, 2018)  Osisko Mining Inc. (OSK:TSX. “Osisko” or the “Corporation”) is pleased to provide new infill drilling results from the ongoing drill definition and expansion program at its 100% owned Windfall Lake gold project located in the Abitibi greenstone belt, Urban Township, Eeyou Istchee James Bay, Québec. The 800,000 metre drill program commenced in late 2015. The program is now focussed on infill drilling within the main Windfall gold deposit and the adjacent Lynx deposit (located immediately NE of Windfall), and exploration and expansion drilling on main mineralized zones with several deep holes in progress to investigate the down-plunge areas in and around the Underdog and Lynx zones.

 

Significant new analytical results from 80 intercepts in 53 drill holes and one wedge focused on infill of the Main Windfall Lake and Lynx deposits and on deep-exploration targets are presented below.

Highlights from the new results include: 510 g/t Au over 5.2 metres in OSK-W-18-1639; 742 g/t Au over 2.2 metres in OSK-W-18-1589; 21.6 g/t Au over 19.4 metres in OSK-W-18-1655; 198 g/t Au over 2.0 metres in OSK-W-18-1638; 25.7 g/t Au over 8.9 metres in OSK-W-17-1313. 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	Type	Mineralized Zone
OSK-W-17-907	436.7	441.6	4.9	7.56		infill	Lynx
including	440.0	440.7	0.7	31.3
OSK-W-17-936-W2	522.4	524.8	2.4	16.7		infill	Caribou
including	523.4	523.8	0.4	95.0
OSK-W-17-958	480.9	483.0	2.1	36.5	25.9	infill	Lynx
including	481.5	482.0	0.5	145	100
OSK-W-17-1070	21.0	23.8	2.8	8.12		infill	Zone 27
including	22.0	22.7	0.7	32.3
OSK-W-17-1119	548.1	551.0	2.9	5.63		infill	Caribou
including	548.1	549.0	0.9	17.0
OSK-W-17-1143	85.0	87.0	2.0	20.4	15.4	infill	Lynx
including	86.0	86.3	0.3	134	100
OSK-W-17-1158	145.0	147.0	2.0	71.4	50.1	Bobcat	Bobcat
including	146.0	147.0	1.0	143	100
OSK-W-17-1186	770.0	772.0	2.0	18.0	15.3	infill	Underdog
including	771.0	771.3	0.3	118	100
OSK-W-17-1313	351.4	360.3	8.9	25.7		infill	Zone 27
OSK-W-18-1440	144.1	146.5	2.4	6.61		infill	Caribou
including	145.6	146.5	0.9	17.6
OSK-W-18-1518	218.0	221.0	3.0	3.74		infill	Caribou
OSK-W-18-1530	90.0	92.0	2.0	11.4		infill	Lynx
including	91.0	92.0	1.0	22.7
OSK-W-18-1552	316.0	318.0	2.0	3.70		infill	Zone 27
including	316.0	316.3	0.3	19.9
OSK-W-18-1559	303.0	305.0	2.0	4.47		infill	Zone 27
OSK-W-18-1561	195.0	197.2	2.2	7.33		infill	Lynx
including	195.0	196.0	1.0	15.7
OSK-W-18-1564	160.0	162.0	2.0	4.49		infill	Caribou
	279.0	281.0	2.0	4.71		infill	Caribou
OSK-W-18-1589	101.6	103.8	2.2	742	24.0	infill	Zone 27
including	102.9	103.4	0.5	3260	100
OSK-W-18-1594	177.8	180.4	2.6	10.4		infill	Zone 27
OSK-W-18-1598	434.8	437.0	2.2	5.47		infill	Lynx
including	435.4	436.1	0.7	14.7
OSK-W-18-1613	171.7	174.0	2.3	8.12		infill	Lynx
including	173.0	174.0	1.0	18.2
OSK-W-18-1618	160.5	163.0	2.5	3.00		infill	Caribou
including	160.8	161.4	0.6	11.0
OSK-W-18-1622	32.5	34.6	2.1	16.0		infill	Zone 27
OSK-W-18-1623	175.0	177.3	2.3	6.51		Caribou	Caribou
including	175.5	176.0	0.5	19.7
and	177.0	177.3	0.3	14.3
OSK-W-18-1624	62.2	65.1	2.9	6.01		Caribou	Caribou
including	62.2	62.9	0.7	15.5
	181.6	184.0	2.4	7.97		Caribou	Caribou
including	181.6	182.1	0.5	36.1
	306.2	311.0	4.8	4.30		Zone 27	Zone 27
OSK-W-18-1627	406.6	409.0	2.4	9.25		VNCR	VNCR
OSK-W-18-1628	533.1	535.7	2.6	57.5	38.8	infill	Lynx
including	533.1	533.7	0.6	181	100
	555.5	557.6	2.1	23.0		infill	Lynx
including	555.9	556.6	0.7	68.8
OSK-W-18-1631	76.0	81.1	5.1	4.50		infill	Caribou
OSK-W-18-1632	322.0	324.5	2.5	3.28		infill	Zone 27
OSK-W-18-1634	169.0	172.9	3.9	6.29		infill	Caribou
including	169.0	169.3	0.3	32.1
and	170.5	170.9	0.4	23.3
and	172.6	172.9	0.3	14.3
OSK-W-18-1638	515.0	517.0	2.0	198	97.4	infill	Lynx
including	516.0	517.0	1.0	302	100
	538.6	540.6	2.0	14.6		infill	Lynx
including	538.6	539.6	1.0	29.1
OSK-W-18-1639	452.0	455.5	3.5	3.27		infill	Lynx
	475.8	481.0	5.2	510	19.8	infill	Lynx
including	476.8	477.7	0.9	2930	100
	502.0	504.0	2.0	4.87		infill	Lynx
including	502.0	502.7	0.7	13.8
OSK-W-18-1640	106.7	109.0	2.3	6.27		infill	Caribou
including	108.2	108.6	0.4	31.7
	121.2	124.2	3.0	50.0	43.6	infill	Caribou
including	122.4	124.2	1.8	80.6	69.9
OSK-W-18-1642	127.9	131.7	3.8	12.8		infill	Caribou
	372.0	374.3	2.3	5.95		infill	Zone 27
including	372.0	372.3	0.3	23.6
OSK-W-18-1643	155.0	157.7	2.7	5.99		infill	Bobcat
including	156.8	157.7	0.9	17.8
OSK-W-18-1644	197.0	199.6	2.6	3.32		infill	Caribou
	322.5	325.8	3.3	41.1		infill	Zone 27
OSK-W-18-1645	560.0	562.0	2.0	5.39		infill	Lynx
including	560.8	561.5	0.7	15.2
OSK-W-18-1646	152.8	155.2	2.4	7.51		infill	Caribou
	254.3	257.0	2.7	6.28		infill	Zone 27
OSK-W-18-1647	496.3	498.3	2.0	17.4		infill	Lynx
OSK-W-18-1648	50.0	52.0	2.0	3.74		infill	Caribou
	330.0	334.4	4.4	9.19		infill	Zone 27
OSK-W-18-1649	66.8	68.8	2.0	4.61		infill	Caribou
	266.0	268.0	2.0	48.4	45.0	infill	Caribou
including	266.4	267.3	0.9	108	100
	334.9	337.0	2.1	14.9		infill	Zone 27
including	334.9	335.2	0.3	88.6
OSK-W-18-1650	265.9	270.0	4.1	6.11		infill	Zone 27
including	269.0	270.0	1.0	16.1
	295.0	298.2	3.2	4.22		infill	Zone 27
OSK-W-18-1651	226.9	229.1	2.2	4.01		infill	Caribou
	305.0	307.0	2.0	3.68		infill	Caribou
	320.0	322.0	2.0	7.39		infill	Zone 27
including	321.0	322.0	1.0	14.3
	337.3	342.0	4.7	3.45		infill	Zone 27
OSK-W-18-1653	285.4	288.0	2.6	4.15		infill	Zone 27
OSK-W-18-1654	259.0	261.0	2.0	9.10		infill	Zone 27
OSK-W-18-1655	318.8	321.1	2.3	4.99		infill	Zone 27
	343.6	363.0	19.4	21.6	19.9	infill	Zone 27
including	343.6	344.6	1.0	60.5
including	351.0	353.6	2.6	62.2	56.7
including	360.0	360.9	0.9	122	100
	365.8	368.1	2.3	11.1		infill	Zone 27
including	367.6	368.1	0.5	50.3
OSK-W-18-1656	550.9	556.7	5.8	8.28		infill	Lynx
including	553.3	554.3	1.0	28.6
OSK-W-18-1657	391.0	393.3	2.3	5.00		infill	Lynx
	447.0	449.1	2.1	8.41			Lynx
OSK-W-18-1659	260.3	267.1	6.8	4.09		infill	Zone 27
	274.3	279.5	5.2	5.88		infill	Zone 27
including	275.4	275.8	0.4	27.1
OSK-W-18-1660	51.2	53.4	2.2	7.19		infill	Caribou
including	51.8	52.6	0.8	18.3
OSK-W-18-1661	347.2	349.3	2.1	9.28		infill	Zone 27
OSK-W-18-1662	257.9	261.5	3.6	4.08		infill	Zone 27
	269.0	278.0	9.0	14.8	12.2	infill	Zone 27
including	270.9	271.8	0.9	126	100
OSK-W-18-1665	341.2	343.9	2.7	4.65		infill	Zone 27
OSK-W-18-1669	323.6	327.0	3.4	4.75		infill	Zone 27
including	325.2	326.0	0.8	12.8
OSK-W-18-1671	248.0	250.3	2.3	12.7		infill	Zone 27
including	249.0	249.3	0.3	95.0
	253.9	257.8	3.9	5.64		infill	Zone 27
including	256.8	257.4	0.6	22.3
	287.9	290.4	2.5	24.1		infill	Zone 27
including	289.8	290.4	0.6	85.5
	294.5	296.8	2.3	3.52		infill	Zone 27

 

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

 

 

Hole Number	Azimuth (°)	Dip (°)	Length (m)	UTM E	UTM N	Section
OSK-W-17-907	134	-51	1317	453219	5435340	3575
OSK-W-17-1070	141	-49	66	452024	5434701	2200
OSK-W-17-1119	331	-55	609	452540	5434453	2550
OSK-W-17-1143	331	-46	159	453253	5435003	3425
OSK-W-17-1158	331	-59	696	453046	5434870	3175
OSK-W-17-1186	331	-54	984	452417	5434558	2475
OSK-W-17-1313	331	-51	876	452280	5434572	2375
OSK-W-17-936-W2	332	-56	819	452773	5434547	2775
OSK-W-17-958	143	-55	1212	453359	5435437	3725
OSK-W-18-1440	329	-57	870	452418	5434448	2425
OSK-W-18-1518	330	-54	393	452266	5434569	2350
OSK-W-18-1530	329	-46	141	453258	5434988	3425
OSK-W-18-1552	332	-52	366	452308	5434640	2425
OSK-W-18-1559	331	-53	330	452299	5434661	2425
OSK-W-18-1561	334	-52	302	453403	5434957	3550
OSK-W-18-1564	324	-47	366	452429	5434680	2550
OSK-W-18-1589	138	-48	123	452235	5434944	2500
OSK-W-18-1594	140	-50	270	452212	5434966	2500
OSK-W-18-1598	145	-51	525	453345	5435474	3750
OSK-W-18-1613	141	-52	381	453199	5435178	3475
OSK-W-18-1618	326	-45	255	452312	5434665	2450
OSK-W-18-1622	139	-48	303	452159	5434944	2450
OSK-W-18-1623	332	-45	279	452292	5434648	2425
OSK-W-18-1624	330	-47	333	452311	5434665	2450
OSK-W-18-1627	141	-51	513	453228	5435374	3600
OSK-W-18-1628	145	-48	579	453286	5435494	3700
OSK-W-18-1631	330	-45	315	452356	5434670	2475
OSK-W-18-1632	329	-47	390	452341	5434666	2475
OSK-W-18-1634	330	-46	354	452304	5434658	2425
OSK-W-18-1638	147	-49	555	453297	5435476	3700
OSK-W-18-1639	142	-53	519	453266	5435395	3625
OSK-W-18-1640	318	-59	407	452289	5434578	2375
OSK-W-18-1642	331	-55	473	452331	5434629	2450
OSK-W-18-1643	139	-45	377	452868	5435083	3125
OSK-W-18-1644	352	-45	342	452070	5434450	2125
OSK-W-18-1645	141	-50	618	453308	5435500	3725
OSK-W-18-1646	2	-53	330	452014	5434504	2100
OSK-W-18-1647	142	-53	534	453266	5435395	3625
OSK-W-18-1648	343	-47	342	452056	5434462	2125
OSK-W-18-1649	357	-46	369	452070	5434450	2125
OSK-W-18-1650	360	-56	306	452014	5434504	2100
OSK-W-18-1651	2	-45	378	452070	5434450	2125
OSK-W-18-1653	341	-45	336	452056	5434462	2125
OSK-W-18-1654	355	-52	282	452014	5434504	2100
OSK-W-18-1655	351	-45	375	452087	5434442	2150
OSK-W-18-1656	144	-45	573	453260	5435472	3675
OSK-W-18-1657	146	-51	504	453277	5435392	3650
OSK-W-18-1659	4	-55	315	452014	5434504	2100
OSK-W-18-1660	359	-45	387	452056	5434462	2125
OSK-W-18-1661	353	-45	393	452103	5434436	2150
OSK-W-18-1662	6	-52	303	452014	5434504	2100
OSK-W-18-1665	347	-46	375	452103	5434436	2150
OSK-W-18-1669	3	-47	405	452056	5434462	2125
OSK-W-18-1671	359	-52	309	452014	5434504	2100

 

 

OSK-W-17-907 intersected 7.56 g/t Au over 4.9 metres related to a crustiform vein in Lynx.  Mineralization consists of local visible gold, up to 5% pyrite, and 1% molybdenite and sphalerite in quartz-carbonate crustiform veins injected in a gabbro.

 

OSK-W-17-936-W2 intersected 16.7 g/t Au over 2.4 metres in Caribou. Mineralization consists of 5% clustered pyrite and trace pyrite-tourmaline stringers in pervasive silica flooding within a strongly silicified porphyritic felsic dike.

 

OSK-W-17-958 intersected 36.5 g/t Au over 2.1 metres in Lynx. Mineralization consists of up to 5% pyrite-tourmaline stringers and disseminated pyrite in a gabbro with silica and fuchsite alteration.

 

OSK-W-18-1070 intersected 8.12 g/t Au over 2.8 metres in Zone 27. Mineralization consists of trace disseminated pyrite and a centimetre-scale quartz-carbonate vein in a sericitized rhyolite.

 

OSK-W-17-1119 intersected 5.63 g/t Au over 2.9 metres in Caribou.  Interval contains up to 10% pyrite stringers in a strongly chloritized gabbro with weak sericitization and silicification.

 

OSK-W-17-1143 intersected 20.4 g/t Au over 2.0 metres in Lynx. Mineralization contains local visible gold and 5% pyrite with pervasive silica flooding zone in a sericitized fragmental felsic unit.

 

OSK-W-17-1158 intersected 71.4 g/t Au over 2.0 metres in Bobcat. Mineralization consists of trace disseminated pyrite, trace quartz-carbonate veins in a chloritized and sericitized fragmental dike.

 

OSK-W-17-1186 intersected 18.0 g/t Au over 2.0 metres in Underdog. Mineralization consists of 25% pyrite with intense pervasive silica flooding hosted in a porphyritic felsic dike with moderate sericite alteration.

 

OSK-W-17-1313 intersected 25.7 g/t Au over 8.9 metres in Zone 27. Mineralization consists of up to 25% pyrite with intense silica flooding and trace sphalerite clusters at the silicified and sericitized contact between a porphyritic felsic dike and an andesite.

 

OSK-W-18-1440 intersected 6.61 g/t Au over 2.4 metres in Caribou. Mineralization contains 7% disseminated pyrite and trace pyrite stringers in an andesite with moderate chlorite and carbonate alteration and weak silica and sericite alteration.

 

OSK-W-18-1518 intersected 3.74 g/t Au over 3.0 metres in Caribou. Mineralization consists of 5% pyrite with pervasive silica flooding in a sericitized rhyolite.

 

OSK-W-18-1530 intersected 11.4 g/t Au over 2.0 metres in Lynx. Mineralization contains trace fragmental pyrite and trace pyrite stringers in a sericite, chlorite and silica altered fragmental felsic dike.

 

OSK-W-18-1552 intersected a vein returning 3.70 g/t Au over 2.0 metres in Lynx. Mineralization contains up to 20% pyrite stringers at the sericitized contact between a porphyritic felsic dike and an andesite.

 

OSK-W-18-1559 intersected 4.47 g/t Au over 2.0 metres in Zone 27. Mineralization consists of trace pyrite stringers and pyrite-quartz clusters in a chloritized andesite.

 

OSK-W-18-1561 intersected 7.33 g/t Au over 2.2 metres in Lynx. Mineralization consists of trace disseminated pyrite and 90% quartz clusters over 40 cm in a strongly silicified rhyolite with light sericite and carbonate alteration.

 

OSK-W-18-1564 intersected 4.49 g/t Au over 2.0 metres and 4.71 g/t Au over 2.0 metres in Caribou. Mineralization consists of 2% disseminated pyrite and stringers hosted in a bleached and sericitized porphyritic dike or a chloritized andesite with carbonate and hematite alteration.

 

OSK-W-18-1589 intersected 742 g/t Au over 2.2 metres in Zone 27. Mineralization consists of local visible gold clusters within a pyrite-tourmaline stringer hosted in a moderately sericitized rhyolite.

 

OSK-W-18-1594 intersected 10.4 g/t Au over 2.6 metres in Zone 27. Mineralization consists of 10% to locally 60% pyrite stringers in a silicified and sericitized fragmental rhyolite.

 

OSK-W-18-1598 intersected 5.47 g/t Au over 2.2 metres in Lynx. Mineralization consists of 2% pyrite with quartz-carbonate ± tourmaline crustiform veins and 1% pyrite stringers in a bleached and fuchsite altered gabbro.

 

OSK-W-18-1613 intersected 8.12 g/t Au over 2.3 metres in Lynx. Mineralization consists of up to 5% pyrite with pervasive silica flooding in a moderately silica altered porphyritic felsic dike.

 

OSK-W-18-1618 intersected 3.00 g/t Au over 2.5 metres in Caribou. Mineralization consists of trace pyrite clusters in a moderately sericite altered rhyolite.

 

OSK-W-18-1622 intersected 16.0 g/t Au over 2.1 metres with in Zone 27. Mineralization consists of up 25% pyrite in stockwork in a chlorite-rich matrix and a local centimetre band of pyrite massive, hosted in a bleached andesite.

 

OSK-W-18-1623 intersected 6.51 g/t Au over 2.3 metres in Caribou. Mineralization consists of local visible gold and 25% pyrite-tourmaline stringers within a strongly silicified and moderately sericitized rhyolite.

 

OSK-W-18-1624 intersected 6.01 g/t Au over 2.9 metres and 7.97 g/t Au over 2.4 metres  in Caribou and  4.30 g/t Au over 4.8 metres in Zone 27. The first and second intervals contain 1% pyrite stringers and trace pyrite in quartz or quartz-tourmaline veins and locally 5% pyrite infilling fractures within a moderately sericitized and silicified rhyolite. The third interval contains 5% pyrite stringers, 1% disseminated pyrite and trace chalcopyrite in a strongly bleached andesite.

 

OSK-W-18-1627 intersected a crustiform vein returning 9.25 g/t Au over 2.4 metres. Mineralization consists of 2% pyrite stringers in a metre-scale crustiform vein composed of quartz-carbonate with 1% ptygmatic tourmaline veinlets hosted in a lightly fuchsite altered gabbro.

 

OSK-W-18-1628 intersected 57.5 g/t Au over 2.6 metres and 23.0 g/t Au over 2.1 metres in Lynx. Both intervals contain local visible gold and up to 7% disseminated pyrite and stringers in a strongly sericite, locally silica and fuchsite altered gabbro.

 

OSK-W-18-1631 intersected 4.50 g/t Au over 5.1 metres in Caribou. Mineralization consists of 10% pyrite stringers hosted in a porphyritic felsic dike and gabbroic unit.

 

OSK-W-18-1632 intersected 3.28 g/t Au over 2.5 metres in Zone 27. Mineralization consists of 10% pyrite stockwork and 3% disseminated pyrite in a sericitized andesite.

 

OSK-W-18-1634 intersected 6.29 g/t Au over 3.9 metres in Caribou. Mineralization consists of up to 25% pyrite clusters with local patches of silica flooding, quartz-carbonate veins and ptygmatic tourmaline veinlets in a moderately sericitized rhyolite.

 

OSK-W-18-1638 intersected  198 g/t Au over 2.0 metres and 14.6 g/t Au over 2.0 metres in Lynx. The first interval is composed of 6% pyrite stringers and clusters, 1% pyrite in two 30-centimetre scale quartz-carbonate crustiform veins, 1% pyrite in ptygmatic tourmaline veinlets hosted in bleached and fuchsite altered gabbro. The second interval contains local visible gold with 3% pyrite stringers and trace pyrite in ptygmatic tourmaline veins hosted in a silicified and fuchsite altered gabbro.

 

OSK-W-18-1639 intersected three intervals: 3.27 g/t Au over 3.5 metres, 510 g/t Au over 5.2 metres and 4.87 g/t Au over 2.0 metres in Lynx. The first interval contains 1% pyrite stringers with 70% quartz clusters in a chlorite and carbonate altered gabbro. The second interval contains local visible gold in veinlets and as disseminated grains and 5% pyrite stringers in a crustiform vein hosted in a sericite and fuchsite altered gabbro. The third interval contains local visible gold and 3% pyrite stringers in a sericitized and weakly fuchsite altered gabbro.

 

OSK-W-18-1640 intersected two intervals: 6.27 g/t Au over 2.3 metres and 50.0 g/t Au over 3.0 metres in Caribou. The first interval contains 8% pyrite stockwork with pervasive silica flooding, 1% sphalerite and trace chalcopyrite hosted in a moderately bleached and sericitized felsic porphyritic dike. The second interval contains 35% semi-massive pyrite within a bleached, moderately to strongly sericite and silica-altered andesite and felsic porphyritic dike.

 

OSK-W-18-1642 intersected 12.8 g/t Au over 3.8 metres in Caribou and 5.95 g/t Au over 2.3 metres in Zone 27. The first interval contains 20% (to locally 60%) pyrite ± tourmaline stringers with trace sphalerite hosted in a strongly silicified and sericitized rhyolite and strongly sericitized andesite injected locally by quartz-carbonate-tourmaline veins. The second interval contains up to 15% disseminated pyrite, stringers or clusters with quartz-carbonate veins and quartz tourmaline breccia in a bleached and sericitized and chloritized gabbro.

 

OSK-W-18-1643 intersected 5.99 g/t Au over 2.7 metres in Bobcat. Mineralization consists of 3% pyrite-tourmaline stringers at the margins of quartz-carbonate veins hosted in a weakly sericitized rhyolite.

 

OSK-W-18-1644 intersected two intervals: 3.32 g/t Au over 2.6 metres in Caribou and 41.1 g/t Au over 3.3 metres in Zone 27. The first interval contains 5% pyrite with quartz-carbonate veins, 8% pyrite stockwork with pervasive silica flooding, 1% sphalerite and trace chalcopyrite hosted in a moderately bleached and sericitized felsic porphyritic intrusion. The second interval contains local visible gold, up to 30% disseminated, stringer, or cluster pyrite with trace chalcopyrite with silica patches and trace ptygmatic tourmaline veinlets hosted in a bleached and moderately to strongly sericite altered andesite.

 

OSK-W-18-1645 intersected 5.39 g/t Au over 2.0 metres in Lynx. Mineralization consists of 5% pyrite and 1% sphalerite with pervasive silica flooding in a gabbro.

 

OSK-W-18-1646 intersected two intervals: 7.51 g/t Au over 2.4 metres in Caribou and 6.28 g/t Au over 2.7 metres in Zone 27. The first interval contains 5% pyrite in ptygmatic tourmaline veins in a moderately sericite, chlorite and fuchsite altered porphyritic felsic dike. The second interval contains 3% disseminated and cluster pyrite in chloritized and silicified andesite alternating with sericitized porphyritic felsic dike.

 

OSK-W-18-1647 intersected 17.4 g/t Au over 2.0 metres in Lynx. Mineralization consists of trace pyrite in ptygmatic tourmaline veinlets in a crustiform carbonate vein overprinted by silica and fuchsite alteration hosted in a gabbro.

 

OSK-W-18-1648 intersected two intervals: 3.74 g/t Au over 2.3 metres in Caribou and 9.19 g/t Au over 4.4 metres in Zone 27. The first interval contains 7% pyrite with quartz-carbonates veins in a weakly sericitized porphyritic felsic dike. The second interval contains 1% pyrite stringers and 2% disseminated pyrite in a moderately sericite and fuchsite altered porphyritic felsic dike at the contact with Red Dog intrusion.

 

OSK-W-18-1649 intersected three intervals: 4.61 g/t Au over 2.0 metres and 48.4 g/t Au over 2.0 metres in Caribou and 14.9 g/t Au over 2.1 metres in Zone 27. The first interval contains 3% pyrite stringers, 2% sphalerite stringers and 3% disseminated pyrite in a sericite and silica altered porphyritic felsic dike. The second interval contains 3% disseminated pyrite and clusters with 2% ptygmatic tourmaline veins in a chloritized and sericitized porphyritic felsic dike. The third interval contains local visible gold, 7% pyrite with silica flooding, 2% pyrite stringers, 2% pyrite-tourmaline stringers and 3% disseminated pyrite in sericitized and silicified fragmental porphyritic felsic dike.

 

OSK-W-18-1650 intersected two intervals: 6.11 g/t Au over 4.1 metres and 4.22 g/t Au over 3.2 metres in Zone 27. Mineralization consists of 5% pyrite-tourmaline stringers and 2% pyrite with silica flooding in a moderately sericitized and bleached porphyritic felsic dike.

 

OSK-W-18-1651 intersected fourth intervals: 4.01 g/t Au over 2.2 metres and 3.68 g/t Au over 2.0 metres in Caribou, and 7.39 g/t Au over 2.0 metres and 3.45 g/t Au over 4.7 metres in Zone 27.  The first and second intervals contain 15% semi-massive pyrite, 3% pyrite stringers and clusters and 3% disseminated pyrite within a sericitized and silicified rhyolite or porphyritic felsic dike. The third interval contains 5% pyrite stringers and 5% disseminated pyrite in a bleached and moderately silicified and sericitized andesite with weak fuchsite alteration. The fourth interval contains up to 40% semi-massive pyrite, 10% pyrite stringers, 10% clustered or disseminated pyrite, 2% pyrite in smoky quartz veins or ptygmatic tourmaline veinlets and trace chalcopyrite hosted in sericitized, silicified and bleached porphyritic dike and sericitized andesite.

 

OSK-W-18-1653 intersected 4.15 g/t Au over 2.6 metres in Zone 27. Mineralization is composed of 5% pyrite-tourmaline clusters, 1% disseminated pyrite, trace pyrite with quartz-tourmaline veins and up to 10% pyrite with pervasive silica flooding. Host rocks are a sericitized rhyolite and a sericitized porphyritic felsic dike.

 

OSK-W-18-1654 intersected 9.10 g/t Au over 2.0 metres in Zone 27. Mineralization consists of up to 5% pyrite stringers with local tourmaline, 1% pyrite in quartz-tourmaline veins and trace chalcopyrite in a silicified and sericitized porphyritic felsic dike.

 

OSK-W-18-1655 intersected three intervals: 4.99 g/t Au over 2.3 metres, 21.6 g/t Au over 19.4 metres and 11.1 g/t Au over 2.3 metres in Zone 27. The first interval contains 5% pyrite with pervasive silica flooding, 2% pyrite stringers and 1% disseminated pyrite in a sericitized and silicified rhyolite at the contact with a porphyric felsic dike. The second interval contains local visible gold, up to 20% pyrite stockwork, 10% disseminated pyrite, up to 5% disseminated sphalerite and 1% disseminated chalcopyrite. Host is a bleached, silica and sericite altered porphyric felsic intrusion. The third interval contains 3% pyrite with quartz-tourmaline veins and 7% disseminated pyrite in a faulted zone at contact between a porphyritic felsic dike and an andesite.

 

OSK-W-18-1656 intersected 8.28 g/t Au over 5.8 metres in Lynx. Mineralization consists of 2% pyrite stringers in quartz-tourmaline-carbonate veins hosted in a chloritized gabbro.

 

OSK-W-18-1657 intersected 5.00 g/t Au over 2.3 metres and 8.41 g/t Au over 2.1 metres in Lynx. The first interval contains up to 7% disseminated pyrite in a strongly silica altered rhyolite. The second interval contains 10% disseminated pyrite and pyrite-tourmaline stringers in a strongly sericitized, chloritized and bleached gabbro with local silica-fuchsite alteration.

 

OSK-W-18-1659 intersected 4.09 g/t Au over 6.8 metres and 5.88 g/t Au over 5.2 metres in Zone 27. The first interval contains 7% pyrite stringers and up to 40% semi-massive pyrite (over 1.5 metres) with silica alteration in a sericitized andesite and porphyritic felsic dike. The second interval contains local visible gold with locally 30% massive pyrite and 10% pyrite stringers in a strongly sericitized andesite and porphyritic felsic intrusion.

 

OSK-W-18-1660 intersected 7.19 g/t Au over 2.2 metres in Caribou. Mineralization consists of up to 6% disseminated and stringer pyrite and 1% sphalerite in quartz veins hosted in a strongly silicified porphyritic felsic dike.

 

OSK-W-18-1661 intersected 9.28 g/t Au over 2.1 metres in Zone 27. Mineralization consists of up to 20% disseminated pyrite, 10% pyrite stringers, 3% disseminated sphalerite, trace of pyrite-tourmaline stringers and trace disseminated chalcopyrite in a bleached, sericitized and locally silicified porphyritic felsic intrusion.

 

OSK-W-18-1662 intersected two intervals: 4.08 g/t Au over 3.6 metres and 14.8 g/t Au over 9.0 metres in Zone 27.  The first interval contains 2% pyrite stringers, 3% disseminated pyrite, 2% pyrite in quartz vein in a strongly sericitized porphyritic felsic dike at contact with a sericitized andesite. The second interval contains local visible gold, up to 5% pyrite stringers in a strongly sericitized and weakly silicified porphyritic felsic dike.

 

OSK-W-18-1665 intersected 4.65 g/t Au over 2.7 metres in Zone 27.  Mineralization is composed of 30% pyrite-tourmaline stringers with local patchy silica alteration hosted in a sericitized porphyritic felsic dike and a sericitized rhyolite.

 

OSK-W-18-1669 intersected 4.75 g/t Au over 3.4 metres in Zone 27. Mineralization consists of up to 10% pyrite stringers and clusters, 6% disseminated pyrite in a breccia tourmaline quartz zone. Host rocks are a sericitized porphyritic felsic dike and a bleached and sericitized fragmental andesite.

 

OSK-W-18-1671 intersected four intervals: 12.7 g/t Au over 2.3 metres, 5.64 g/t Au over 3.9 metres, 24.1 g/t Au over 2.5 metres and 3.52 g/t Au over 2.3 metres in Zone 27. The first interval contains 12% pyrite stringers and clusters with local silica flooding in moderately sericitized and bleached andesite. The second, third and fourth intervals contain 30 to 70% pyrite-tourmaline stringers and local quartz veins hosted in a sericitized and bleached andesite and a porphyritic felsic dike with moderate fuchsite, and weak silica-sericite and chlorite alteration.

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

True width determination is currently unknown but is estimated at 65-80% 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 or present a higher percentage of pyrite than surrounding intervals. Selected samples are also analyzed for multi-elements, including silver, using an Aqua Regia-ICP-AES method at ALS Laboratories. Drill program design, Quality Assurance/Quality Control (“QA/QC”) and interpretation of results is performed by qualified persons employing a QA/QC program consistent with NI 43-101 and industry best practices. Standards and blanks are included with every 20 samples for QA/QC purposes by the Corporation as well as the lab. Approximately 5% of sample pulps are sent to secondary laboratories for check assay.

 

About the Windfall Lake Gold Deposit

The Windfall Lake gold deposit is located between Val-d’Or and Chibougamau in the Abitibi region of Québec, Canada. The mineral resource defined by Osisko, as disclosed in the Windfall Lake Technical Report (as defined below), comprises 2,382,000 tonnes at 7.85 g/t Au (601,000 ounces) in the indicated mineral resource category and 10,605,000 tonnes at 6.70 g/t Au (2,284,000 ounces) in the inferred mineral resource category. For details regarding the key assumptions, parameters and methods used to estimate the mineral resources presented in respect of the Windfall Lake gold project, please see the technical report entitled “Technical Report and Mineral Resource Estimate for the Windfall Lake Project, Windfall Lake and Urban-Barry Properties” and dated June 12, 2018 (effective date of May 14, 2018), which has been prepared by InnovExplo Inc. from Val-d’Or, Québec (the “Windfall Lake Technical Report”). The Windfall Lake Technical Report is available on Osisko’s website at www.osiskomining.com and on SEDAR under Osisko’s issuer profile at www.sedar.com). The Windfall Lake gold deposit is currently one of the highest grade resource-stage gold projects in Canada. Mineralization occurs in four principal zones: Lynx, Zone 27, Caribou and Underdog. All zones comprise sub-vertical lenses following intrusive porphyry contacts plunging to the northeast. The deposit is well defined from surface to a depth of 900 metres and remains open along strike and at depth. Mineralization has been identified only 30 metres from surface in some areas and as deep as 1,200 metres in others, with significant potential to extend mineralization down-plunge and at depth.

About Osisko Mining Inc.

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 Lake gold deposit located between Val-d’Or and Chibougamau in Québec and holds a 100% undivided interest in a large area of claims in the surrounding Urban Barry area and nearby Quevillon area (over 3,300 square kilometres), a 100% interest in the Marban project located in the heart of Québec’s prolific Abitibi gold mining district, and properties in the Larder Lake Mining Division in northeast Ontario, including the Jonpol and Garrcon deposits on the Garrison property, the Buffonta past producing mine and the Gold Pike mine property. The Corporation also holds interests and options in a number of additional properties in northern Québec and Ontario.

Cautionary Note Regarding Forward-Looking Information

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

 

For further information please contact:

John Burzynski
President and Chief Executive Officer

Telephone: (416) 363-8653