OSISKO WINDFALL DRILLING RETURNS 3,979 g/t Au OVER 2.3 METRES

Posted on October 5, 2021October 4, 2021 by lboivin

(Toronto, October 05, 2021) Osisko Mining Inc. (OSK:TSX. “Osisko” or the “Corporation”) is pleased to provide new analytical results from the ongoing drill program at its 100% owned Windfall gold project located in the Abitibi greenstone belt, Urban Township, Eeyou Istchee James Bay, Québec.

Significant new analytical results presented below include 40 intercepts in 15 drill holes (7 from surface, 8 from underground) and 13 wedges. The infill intercepts are located inside defined February 2021 mineral resource estimate (“MRE”) blocks (see Osisko news release dated February 17, 2021). The expansion intercepts are located outside the February 2021 MRE blocks and either expand resource wireframes or are in a defined zone or corridor but do not yet correlate to a specific wireframe.

Osisko Chief Executive Officer John Burzynski commented: “Windfall continues to deliver high-grade values. Today’s spectacular headline result includes a sub-interval of over 15 kilograms per tonne gold and is the second highest sample ever recorded at Windfall (see Osisko news release date December 1, 2020). Our resource infill and expansion drill program has continuously demonstrated the high-grade nature of the Windfall deposit.”

Selected high-grade intercepts include: 3979 g/t Au over 2.3 metres in OSK-W-21-2565; 118 g/t Au over 3.4 metres in WST-21-0763A; 110 g/t Au over 2.3 metres and 79.7 g/t Au over 2.0 metres in WST-21-0858A; 82.7 g/t Au over 2.2 metres in OSK-W-21-1949-W8; 25.6 g/t Au over 4.2 metres in OSK-W-21-2551-W3; and 35.8 g/t Au over 2.9 metres in OSK-W-21-2564-W1. Maps showing hole locations and full analytical results are available at www.osiskomining.com.

Infill Drilling

Hole No.	From (m)	To (m)	Interval (m)	Au (g/t) uncut	Au (g/t) cut to 100 g/t	Zone	Corridor
OSK-W-21-1432-W6	879.6	881.6	2.0	8.62		LX4_3424	Lynx 4
including	879.6	880.2	0.6	28.7		LX4_3424	Lynx 4
OSK-W-21-1432-W7	1045.0	1047.0	2.0	13.4		LX4_3430	Lynx 4
including	1045.7	1046.4	0.7	28.4		LX4_3430	Lynx 4
OSK-W-21-1827-W5	877.0	879.0	2.0	5.25		UDD_4100	Underdog
OSK-W-21-1949-W8	1069.8	1072.0	2.2	82.7	32.0	LX4_3430	Lynx 4
including	1071.0	1071.6	0.6	286	100	LX4_3430	Lynx 4
OSK-W-21-2287-W3	1158.5	1161.5	3.0	5.00		LX4_3446	Lynx 4
OSK-W-21-2503-W5	934.0	936.0	2.0	14.6		TLX_3163	Triple Lynx
including	934.9	935.2	0.3	82.5		TLX_3163	Triple Lynx
OSK-W-21-2544	914.0	916.5	2.5	7.51		TLX_3194	Triple Lynx
including	914.6	915.6	1.0	18.4		TLX_3194	Triple Lynx
OSK-W-21-2551-W3	867.4	871.6	4.2	25.6		LX4_3414	Lynx 4
including	867.9	868.4	0.5	84.2		LX4_3414	Lynx 4
OSK-W-21-2560	349.9	352.0	2.1	9.71		Z27_1123	Zone 27
	355.0	357.0	2.0	40.1		Z27_1102	Zone 27
including	355.7	356.3	0.6	91.4		Z27_1102	Zone 27
	370.1	372.5	2.4	5.09		Z27_1115	Zone 27
including	370.1	371.0	0.9	10.7		Z27_1115	Zone 27
OSK-W-21-2564-W1	784.5	787.4	2.9	35.8		TLX_3159	Lynx HW
	902.0	904.0	2.0	6.70		TLX_3194	Triple Lynx
OSK-W-21-2577	797.6	799.6	2.0	5.68		Z27_1108	Zone 27
OSK-W-21-2581	257.0	259.0	2.0	5.28		CA1_2500	Caribou
including	257.4	258.0	0.6	16.5		CA1_2500	Caribou
	469.0	471.0	2.0	14.6		Z27_1115	Zone 27
	476.5	480.0	3.5	3.96		Z27_1115	Zone 27
WST-21-0763A	472.6	476.0	3.4	118	41.9	LX4_3430	Lynx 4
including	472.6	473.5	0.9	386	100	LX4_3430	Lynx 4
WST-21-0771C	313.4	317.0	3.6	3.90		LSW_3556	Lynx SW
including	313.4	313.8	0.4	21.4
and	316.6	317.0	0.4	12.0
WST-21-0855	172.0	174.1	2.1	18.1		LXM_3304	Lynx
including	173.8	174.1	0.3	95.3		LXM_3304	Lynx
WST-21-0858A	180.2	182.5	2.3	110	44.3	LXM_3304	Lynx
including	181.0	181.3	0.3	607	100	LXM_3304	Lynx
	517.0	519.0	2.0	79.7	28.3	LX4_3430	Lynx 4
including	518.1	518.5	0.4	357	100	LX4_3430	Lynx 4
WST-21-0877	305.6	307.7	2.1	4.37		Lynx SW	Lynx SW
including	305.6	305.9	0.3	28.7		Lynx SW	Lynx SW

Notes: True widths are estimated at 55 – 80% of the reported core length interval. See “Quality Control and Reporting Protocols” below., LXM = Lynx Main, LX4 = Lynx 4, LSW = Lynx Southwest, TLX = Triple Lynx, UDD = Underdog, CA1 = Caribou, and Z27 = Zone 27.

Expansion Drilling

Hole No.	From (m)	To (m)	Interval (m)	Au (g/t) uncut	Au (g/t) cut to 100 g/t	Zone	Corridor
OSK-W-17-841	966.3	968.8	2.5	11.2		Underdog	Underdog
OSK-W-21-1432-W7	1053.0	1055.1	2.1	13.5		Lynx 4	Lynx
including	1053.0	1054.0	1.0	27.5		Lynx 4	Lynx
OSK-W-21-1827-W6	1084.0	1086.0	2.0	4.75		Underdog	Underdog
including	1084.8	1085.3	0.5	18.9		Underdog	Underdog
OSK-W-21-1871-W1	561.7	564.2	2.5	10.8		Caribou	Caribou
including	563.4	564.2	0.8	30.8		Caribou	Caribou
OSK-W-21-2503-W5	1004.0	1006.0	2.0	36.4	22.6	Triple Lynx	Triple Lynx
including	1004.7	1005.0	0.3	193	100	Triple Lynx	Triple Lynx
OSK-W-21-2532-W1	703.0	705.1	2.1	3.50		Underdog	Underdog
including	704.7	705.1	0.4	17.6		Underdog	Underdog
OSK-W-21-2540-W2	1149.0	1151.0	2.0	5.93		Triple Lynx	Triple Lynx
OSK-W-21-2548-W1	488.0	490.0	2.0	15.9		Caribou	Caribou
including	488.0	489.0	1.0	31.8		Caribou	Caribou
OSK-W-21-2561	611.2	613.5	2.3	9.05		Triple Lynx	Triple Lynx
including	612.3	612.8	0.5	41.2		Triple Lynx	Triple Lynx
OSK-W-21-2565	535.8	538.1	2.3	3979	27.2	Caribou	Caribou
including	537.5	538.1	0.6	15250	100	Caribou	Caribou
OSK-W-21-2577	593.0	595.0	2.0	6.61		Caribou	Caribou
OSK-W-21-2581	188.4	191.0	2.6	6.65		Caribou	Caribou
including	189.8	190.6	0.8	13.8		Caribou	Caribou
WST-21-0771C	222.0	225.2	3.2	7.83		Lynx SW	Lynx SW
including	224.7	225.2	0.5	31.5		Lynx SW	Lynx SW
WST-21-0834B	302.0	304.0	2.0	3.54		Lynx HW	Lynx HW
including	302.0	302.4	0.4	17.5		Lynx HW	Lynx HW
WST-21-0874	253.0	255.2	2.2	6.25		Triple Lynx	Triple Lynx
WST-21-0881A	247.5	249.5	2.0	12.2		Lynx SW	Lynx SW
	444.3	446.3	2.0	5.25		Lynx SW	Lynx SW
including	444.8	445.2	0.4	26.1		Lynx SW	Lynx SW

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

Drill hole location

Hole Number	Azimuth (°)	Dip (°)	Length (m)	UTM E	UTM N	Elevation	Section
OSK-W-17-841	330	-60	1032	452689	5434702	397	2800
OSK-W-21-1432-W6	132	-55	1065	453811	5435779	400	4300
OSK-W-21-1432-W7	132	-55	1185	453811	5435779	400	4300
OSK-W-21-1827-W5	331	-58	1203	452506	5434390	403	2475
OSK-W-21-1827-W6	331	-58	1281	452506	5434390	403	2475
OSK-W-21-1871-W1	331	-56	612	452496	5434397	402	2475
OSK-W-21-1949-W8	105	-57	1284	453440	5435479	401	3825
OSK-W-21-2287-W3	116	-53	1368	453607	5435714	404	4075
OSK-W-21-2503-W5	126	-58	1211	453333	5435641	413	3800
OSK-W-21-2532-W1	341	-60	1035	452480	5434428	401	2475
OSK-W-21-2540-W2	117	-60	1314	453465	5435640	410	3925
OSK-W-21-2544	128	-50	1161	452960	5435539	419	3425
OSK-W-21-2548-W1	331	-57	837	452829	5434550	398	2850
OSK-W-21-2551-W3	120	-55	954	453622	5435635	405	4050
OSK-W-21-2560	333	-53	684	452404	5434674	400	2525
OSK-W-21-2561	142	-51	801	452886	5435484	409	3350
OSK-W-21-2564-W1	132	-50	1152	452960	5435539	419	3425
OSK-W-21-2565	136	-57	717	452768	5435312	406	3150
OSK-W-21-2577	325	-52	822	452829	5434550	398	2850
OSK-W-21-2581	333	-49	755	452469	5434627	403	2550
WST-21-0763A	120	-39	567	453507	5435332	-47	3800
WST-21-0771C	127	-52	357	452954	5435003	252	3175
WST-21-0834B	114	-23	378	453463	5435327	32	3775
WST-21-0855	122	-44	265	453506	5435332	-48	3800
WST-21-0858A	118	-41	643	453507	5435332	-48	3800
WST-21-0874	137	-63	403	453508	5435327	-7	3800
WST-21-0877	158	-60	490	453104	5435065	231	3325
WST-21-0881A	147	-57	457	453105	5435065	231	3325

Caribou Zone

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

Underdog

Mineralization most commonly occurs in gold-bearing quartz-pyrite (± tourmaline) veins and as disseminated, stringer, semi-massive to massive pyrite with minor sphalerite, chalcopyrite and molybdenite associated with strong sericite and silica alteration. Mineralization is hosted along the intrusive contacts of a three-phase composite felsic porphyritic unit which cross-cuts felsic and mafic volcanic sequences.

Zone 27

Mineralization most commonly occurs as replacement-type characterized by 5% to 50% disseminated, stringer, semi-massive or stockwork pyrite, ptygmatic tourmaline veins, quartz-tourmaline crustiform veins, local quartz-carbonate veins, and local visible gold. Mineralization is associated with moderate to strong sericite, weak to strong silica, weak chlorite and carbonate and locally weak fuchsite and is hosted in strongly altered andesites, in or at the contact of the rhyolite, or along the contacts with felsic porphyritic intrusions.

Lynx Zone

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

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), Director of Exploration for Osisko’s Windfall 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 estimated at 55-80% of the reported core length interval for the zone. Assays are uncut except where indicated. Intercepts occur within geological confines of major zones but have not been correlated to individual vein domains at this time. Reported intervals include minimum weighted averages of 3.5 g/t Au diluted over core lengths of at least 2.0 metres. NQ core assays 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, Vancouver, British Colombia, Lima, Peru or Vientiane, Laos (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 a Four Acid Digestion-ICP-MS method at ALS Laboratories. Drill program design, Quality Assurance/Quality Control (“QA/QC”) and interpretation of results is performed by qualified persons employing a QA/QC program consistent with NI 43-101 and industry best practices. Standards and blanks are included with every 20 samples for QA/QC purposes by the Corporation as well as the lab. Approximately 5% of sample pulps are sent to secondary laboratories for check assay.

About the Windfall Gold Deposit

The Windfall gold deposit is located between Val-d’Or and Chibougamau in the Abitibi region of Québec, Canada. The Mineral Resource Estimate (“MRE“) defined by Osisko, as disclosed in the news release dated February 17, 2021 is supported by the technical report entitled “Preliminary Economic Assessment Update for the Windfall Project” dated April 26, 2021 (that includes Windfall Mineral Resource Estimate with an effective date of November 30, 2020), and assuming a cut-off grade of 3.50 g/t Au, comprises 521,000 tonnes at 11.3 g/t Au (189,000 ounces) in the measured mineral resource category, 5,502,000 tonnes at 9.4 g/t Au (1,668,000 ounces) in the indicated mineral resource category and 16,401,000 tonnes at 8.0 g/t Au (4,244,000 ounces) in the inferred mineral resource category. The key assumptions, parameters and methods used to estimate the mineral resource estimate disclosed in the February 17, 2021 news release are further described in the full technical report prepared by BBA Inc. in accordance with NI 43-101 and is available on SEDAR (www.sedar.com) under the Corporation’s issuer profile. The Windfall gold deposit is currently one of the highest-grade resource-stage gold projects in Canada and has world-class scale. Mineralization occurs in three principal zones: Lynx, Main Zone, and Underdog. Mineralization is generally comprised of sub-vertical zones following intrusive porphyry contacts plunging to the northeast. The resources are defined from surface to a depth of 1,600 metres as it now includes the Triple 8 (T8) zone. The resources excluding T8 are defined from surface to a depth of 1,200 metres. The deposit remains open along strike and at depth. Mineralization has been identified at surface in some areas and as deep as 2,625 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 gold resource properties in Canada. Osisko holds a 100% interest in the high-grade Windfall gold deposit located between Val-d’Or and Chibougamau in Québec and holds a 100% undivided interest in a large area of claims in the surrounding Urban Barry area and nearby Quévillon area (over 2,700 square kilometres).

Cautionary Note Regarding Forward-Looking Information

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

CONTACT INFORMATION:

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

Long Section Expan EN 20211005

Long Section Infill EN 20211005

PR_EN_20211005_Surface

PR_EN_20211005_UG

OSISKO DRILLING RETURNS 632 g/t Au OVER 5.3 METRES IN LYNX

Posted on September 23, 2021September 22, 2021 by lboivin

1,096 g/t Au over 2.7 metres in Caribou

(Toronto, September 23, 2021) Osisko Mining Inc. (OSK:TSX. “Osisko” or the “Corporation”) is pleased to provide new analytical results from the ongoing drill program at its 100% owned Windfall gold project located in the Abitibi greenstone belt, Urban Township, Eeyou Istchee James Bay, Québec.

Significant new analytical results presented below include 87 intercepts in 21 drill holes (10 from surface, 11 from underground) and 20 wedges. The infill intercepts are located inside defined February 2021 mineral resource estimate (“MRE”) blocks (see Osisko news release dated February 17, 2021). The expansion intercepts are located outside the February 2021 MRE blocks and either expand resource wireframes or are in a defined zone or corridor but do not yet correlate to a specific wireframe.

Osisko Chief Executive Officer John Burzynski commented: “Today’s results once again underscore the impressive high-grade nature of the Windfall system, especially in the Lynx. Infill drilling has gone very well throughout this drill campaign and expansion holes, like today’s impressive result from Caribou of over a kilogram of gold, highlight the strong near resource growth potential.”

Selected high-grade intercepts include: 632 g/t Au over 5.3 metres in OSK-W-21-1432-W6; 1,096 g/t Au over 2.7 metres in OSK-W-21-2549; 60.4 g/t Au over 3.4 metres in WST-21-0851A; 79.3 g/t Au over 2.5 metres in WST-21-0871; 92.9 g/t Au over 2.0 metres in WST-21-0741; 89.0 g/t Au over 2.0 metres in OSK-W-21-2531-W2; 78.4 g/t Au over 4.2 metres, 57.7 g/t Au over 3.0 metres, and 53.3 g/t Au over 2.8 metres in WST-21-0872; and 37.2 g/t Au over 3.9 metres in OSK-W-21-2555. Maps showing hole locations and full analytical results are available at www.osiskomining.com.

Infill Drilling

Hole No.	From (m)	To (m)	Interval (m)	Au (g/t) uncut	Au (g/t) cut to 100 g/t	Zone	Corridor
OSK-W-21-1432-W6	960.7	962.9	2.2	16.4		LX4_3437	Lynx 4
including	961.4	962.2	0.8	41.8		LX4_3437	Lynx 4
	970.9	976.2	5.3	632	42.7	LX4_3430	Lynx 4
including	973.3	974.3	1.0	1355	100
and	974.3	974.9	0.6	3210	100
OSK-W-21-1827-W6	886.0	888.0	2.0	9.88		UDD_4100	Underdog
including	886.5	886.8	0.3	46.8		UDD_4100	Underdog
	980.0	982.2	2.2	6.54		UDD_4511	Underdog
including	980.7	981.0	0.3	39.7		UDD_4511	Underdog
OSK-W-21-1882-W6	743.9	746.0	2.1	4.12		UDD_4121	Underdog
	807.9	810.0	2.1	12.2		UDD_4120	Underdog
including	807.9	808.4	0.5	47.9		UDD_4120	Underdog
	920.0	922.0	2.0	5.02		UDD_4515	Underdog
including	920.3	920.6	0.3	30.6		UDD_4515	Underdog
	947.0	949.0	2.0	6.16		UDD_4511	Underdog
including	947.7	948.0	0.3	34.4		UDD_4511	Underdog
	956.0	958.0	2.0	4.97		UDD_4510	Underdog
including	957.7	958.0	0.3	13.0		UDD_4510	Underdog
OSK-W-21-1949-W8	746.0	748.0	2.0	10.7		LXM_3345	Lynx
	1065.0	1067.0	2.0	5.90		LX4_3430	Lynx 4
OSK-W-21-2287-W6	1323.3	1325.4	2.1	19.7		LX4_3445	Lynx 4
including	1323.7	1324.2	0.5	47.9		LX4_3445	Lynx 4
	1330.0	1334.0	4.0	4.49		LX4_3445	Lynx 4
OSK-W-21-2416-W6	926.3	928.6	2.3	18.5		TLX_3161	Triple Lynx
including	926.6	926.9	0.3	49.7		TLX_3161	Triple Lynx
	940.0	942.0	2.0	20.1		TLX_3183	Triple Lynx
	949.0	951.0	2.0	11.4		TLX_3183	Triple Lynx
	970.0	972.2	2.2	4.21		TLX_3163	Triple Lynx
OSK-W-21-2479-W9	635.9	638.4	2.5	6.43		UDD_4101	Underdog
	660.0	662.0	2.0	21.7	20.8	UDD_4102	Underdog
including	661.1	661.5	0.4	105	100	UDD_4102	Underdog
	672.0	674.0	2.0	6.82		UDD_4104	Underdog
OSK-W-21-2503-W3	1026.6	1028.7	2.1	5.13		TLX_3155	Lynx HW
OSK-W-21-2531-W2	893.5	896.7	3.2	6.29		UDD_4101	Underdog
including	896.4	896.7	0.3	18.8		UDD_4101	Underdog
	942.9	944.9	2.0	15.1		UDD_4100	Underdog
including	944.5	944.9	0.4	63.3		UDD_4100	Underdog
	950.8	952.9	2.1	15.4		UDD_4102	Underdog
including	951.1	951.4	0.3	46.4		UDD_4102	Underdog
	964.2	966.2	2.0	89.0	51.8	UDD_4102	Underdog
including	964.2	965.2	1.0	175	100	UDD_4102	Underdog
	1054.0	1056.0	2.0	25.8	16.9	UDD_4511	Underdog
including	1055.7	1056.0	0.3	160	100	UDD_4511	Underdog
	1060.2	1064.8	4.6	5.81		UDD_4511	Underdog
including	1060.2	1061.0	0.8	21.8		UDD_4511	Underdog
	1131.6	1134.0	2.4	3.62		UDD_4513	Underdog
including	1131.6	1131.9	0.3	18.9		UDD_4513	Underdog
	1083.7	1087.8	4.1	4.87		UDD_4514	Underdog
including	1083.7	1084.1	0.4	24.4		UDD_4514	Underdog
OSK-W-21-2537-W2	905.0	907.1	2.1	16.6		TLX_3161	Triple Lynx
including	906.3	906.7	0.4	69.7		TLX_3161	Triple Lynx
	919.1	921.4	2.3	16.7		TLX_3161	Triple Lynx
including	919.8	920.3	0.5	46.6		TLX_3161	Triple Lynx
	943.5	945.7	2.2	30.3		TLX_3163	Triple Lynx
including	945.0	945.7	0.7	92.1		TLX_3163	Triple Lynx
	999.0	1001.0	2.0	48.9	17.5	TLX_3169	Triple Lynx
including	1000.0	1000.3	0.3	309	100	TLX_3169	Triple Lynx
OSK-W-21-2548	692.0	694.0	2.0	4.43		CA2_2212	Caribou
including	692.3	692.7	0.4	21.4		CA2_2212	Caribou
OSK-W-21-2548-W2	714.0	716.2	2.2	14.9		CA2_2220	Caribou
including	715.2	715.6	0.4	77.1		CA2_2220	Caribou
OSK-W-21-2551-W2	854.0	856.2	2.2	4.76		LX4_3414	Lynx 4
OSK-W-21-2555	647.5	651.4	3.9	37.2		CA2_2233	Caribou
OSK-W-21-2564	734.0	736.0	2.0	27.0		TLX_3171	Triple Lynx
including	735.1	735.5	0.4	97.2		TLX_3171	Triple Lynx
OSK-W-21-2571	545.0	547.2	2.2	4.56		CA2_2232	Caribou
	555.4	557.6	2.2	3.79		CA2_2232	Caribou
	568.2	570.8	2.6	14.1		CA2_2211	Caribou
including	570.0	570.8	0.8	34.7		CA2_2211	Caribou
OSK-W-21-2575	644.2	648.4	4.2	13.5		CA2_2241	Caribou
including	647.6	648.4	0.8	58.9		CA2_2241	Caribou
OSK-W-21-2580	87.0	89.3	2.3	4.71		F51_6008	F-51
including	87.8	88.5	0.7	13.5		F51_6008	F-51
OSK-W-21-2582	118.7	121.0	2.3	16.3		F51_6008	F-51
including	120.0	121.0	1.0	29.0		F51_6008	F-51
WST-21-0741	124.0	126.0	2.0	92.9	35.5	LXM_3304	Lynx
including	124.4	125.1	0.7	264	100	LXM_3304	Lynx
WST-21-0839	315.8	318.0	2.2	11.2		TLX_3168	Triple Lynx
including	315.8	316.8	1.0	24.0		TLX_3168	Triple Lynx
WST-21-0843	105.0	107.0	2.0	9.18		LXM_3304	Lynx
including	105.0	105.9	0.9	18.7		LXM_3304	Lynx
WST-21-0851A	492.2	495.6	3.4	60.4	48.6	LX4_3430	Lynx 4
including	494.9	495.6	0.7	157	100	LX4_3430	Lynx 4
WST-21-0852A	587.4	589.9	2.5	21.5		LX4_3427	Lynx 4
including	588.9	589.5	0.6	43.3		LX4_3427	Lynx 4
WST-21-0854A	631.9	634.0	2.1	28.4		LX4_3448	Lynx 4
including	631.9	632.9	1.0	59.5		LX4_3448	Lynx 4
	638.6	641.0	2.4	4.24		LX4_3448	Lynx 4
including	638.6	639.0	0.4	15.7		LX4_3448	Lynx 4
WST-21-0858A	511.6	513.6	2.0	3.86		LX4_3430	Lynx 4
WST-21-0871	536.5	539.0	2.5	79.3	30.1	LX4_3450	Lynx 4
including	536.5	537.1	0.6	305	100	LX4_3450	Lynx 4
WST-21-0872	278.0	280.8	2.8	53.3	39.9	TLX_3161	Triple Lynx
including	279.7	280.3	0.6	163	100	TLX_3161	Triple Lynx
	294.0	297.0	3.0	57.7	40.1	TLX_3161	Triple Lynx
including	294.5	295.2	0.7	176	100	TLX_3161	Triple Lynx
WST-21-0873	459.0	461.0	2.0	58.1	31.3	LSW_3502	Lynx SW
including	459.6	460.2	0.6	190	100	LSW_3502	Lynx SW

Expansion Drilling

Hole No.	From (m)	To (m)	Interval (m)	Au (g/t) uncut	Au (g/t) cut to 100 g/t	Zone	Corridor
OSK-W-21-1827-W5	801.2	803.7	2.5	5.03		Underdog	Underdog
	969.6	972.0	2.4	9.72		Underdog	Underdog
including	969.6	969.9	0.3	73.6		Underdog	Underdog
OSK-W-21-1827-W6	1044.6	1046.7	2.1	4.98		UDD	Underdog
including	1045.7	1046.0	0.3	32.3		UDD	Underdog
	1236.0	1239.0	3.0	6.46		UDD_4508	Underdog
including	1238.6	1239.0	0.4	30.0
OSK-W-21-1871-W1	456.0	458.1	2.1	5.00		Caribou	Caribou
OSK-W-21-1882-W6	764.1	766.5	2.4	4.32		Underdog	Underdog
including	764.1	764.4	0.3	33.8		Underdog	Underdog
	939.0	941.0	2.0	4.09		Underdog	Underdog
OSK-W-21-2287-W5	1167.9	1172.8	4.9	16.7		LX4	Lynx 4
OSK-W-21-2287-W6	1163.8	1166.0	2.2	4.43		LX4_3446	Lynx 4
including	1164.4	1165.0	0.6	15.1		LX4_3446	Lynx 4
OSK-W-21-2465-W1	756.6	759.0	2.4	16.5	16.1	Lynx	Lynx
including	757.8	758.1	0.3	103	100	Lynx	Lynx
OSK-W-21-2479-W6	475.0	477.3	2.3	6.29		Z27	Zone 27
including	475.4	476.2	0.8	14.9		Z27	Zone 27
OSK-W-21-2503-W5	892.0	894.0	2.0	11.3		TLX	Triple Lynx
including	893.0	894.0	1.0	22.1		TLX	Triple Lynx
	1089.0	1091.0	2.0	4.38		TLX	Triple Lynx
	1148.0	1150.1	2.1	4.73		TLX	Triple Lynx
OSK-W-21-2531-W1	1051.8	1054.0	2.2	4.08		Underdog	Underdog
including	1052.4	1052.7	0.3	12.7		Underdog	Underdog
OSK-W-21-2532-W3	529.0	532.3	3.3	34.6	26.9	Caribou	Caribou
including	531.8	532.3	0.5	151	100	Caribou	Caribou
OSK-W-21-2537-W2	986.0	988.2	2.2	3.93		Triple Lynx	Triple Lynx
OSK-W-21-2548	708.0	710.3	2.3	5.78		Caribou	Caribou
including	709.7	710.0	0.3	37.4		Caribou	Caribou
OSK-W-21-2548-W2	722.0	724.0	2.0	4.83		Caribou	Caribou
including	722.4	722.8	0.4	23.2		Caribou	Caribou
	731.0	733.0	2.0	3.90		Caribou	Caribou
OSK-W-21-2549	421.1	423.8	2.7	1096	12.9	Caribou	Caribou
including	423.5	423.8	0.3	9850	100	Caribou	Caribou
OSK-W-21-2555	606.9	609.0	2.1	11.1		Caribou	Caribou
including	606.9	607.6	0.7	31.9		Caribou	Caribou
OSK-W-21-2565	565.7	572.2	6.5	4.67		Caribou	Caribou
OSK-W-21-2571	574.9	577.0	2.1	6.10		CA2_2223	Caribou
	581.4	584.7	3.3	3.82		Caribou	Caribou
including	584.2	584.7	0.5	16.6		Caribou	Caribou
OSK-W-21-2572	555.0	557.0	2.0	3.92		TLX	Triple Lynx
WST-21-0862A	90.7	95.3	4.6	4.85		BCT	Bobcat
	147.0	149.0	2.0	5.11		LSW	Lynx SW
including	147.6	147.9	0.3	33.8		LSW	Lynx SW
WST-21-0872	312.7	316.9	4.2	78.4	61.1	TLX_3163	Triple Lynx
including	313.7	314.1	0.4	224	100	TLX_3163	Triple Lynx
	324.0	326.0	2.0	23.5		Triple Lynx	Triple Lynx
WST-21-0873	401.0	403.0	2.0	36.0	30.9	LSW	Lynx SW
including	401.0	401.6	0.6	117	100	LSW	Lynx SW

Notes: True widths are estimated at 55 – 80% of the reported core length interval. See “Quality Control and Reporting Protocols” below. LX4 = Lynx 4, LSW = Lynx Southwest, TLX = Triple Lynx, UDD = Underdog, CA2 = Caribou, and BCT = Bobcat.

Drill hole location

Hole Number	Azimuth (°)	Dip (°)	Length (m)	UTM E	UTM N	Elevation	Section
OSK-W-21-1432-W6	132	-55	1065	453811	5435779	400	4300
OSK-W-21-1827-W5	331	-58	1203	452506	5434390	403	2475
OSK-W-21-1827-W6	331	-58	1281	452506	5434390	403	2475
OSK-W-21-1871-W1	331	-56	612	452496	5434397	402	2475
OSK-W-21-1882-W6	328	-58	1062	452469	5434405	400	2450
OSK-W-21-1949-W8	105	-57	1284	453440	5435479	401	3825
OSK-W-21-2287-W5	116	-53	1380	453607	5435714	404	4075
OSK-W-21-2287-W6	116	-53	1443	453607	5435714	404	4075
OSK-W-21-2416-W6	123	-54	990	453169	5435624	412	3650
OSK-W-21-2465-W1	123	-61	1036	453398	5435556	413	3825
OSK-W-21-2479-W6	344	-55	1014	452315	5434419	399	2325
OSK-W-21-2479-W9	344	-55	768	452315	5434419	399	2325
OSK-W-21-2503-W3	126	-58	1257	453333	5435641	413	3800
OSK-W-21-2503-W5	126	-58	1211	453333	5435641	413	3800
OSK-W-21-2531-W1	344	-62	1215	452566	5434415	403	2550
OSK-W-21-2531-W2	344	-62	1179	452566	5434415	403	2550
OSK-W-21-2532-W3	341	-60	1082	452480	5434428	401	2475
OSK-W-21-2537-W2	114	-54	1067	452981	5435549	420	3450
OSK-W-21-2548	331	-57	774	452829	5434550	398	2850
OSK-W-21-2548-W2	331	-57	801	452829	5434550	398	2850
OSK-W-21-2549	332	-58	723	452703	5434455	401	2675
OSK-W-21-2551-W2	120	-55	942	453622	5435635	405	4050
OSK-W-21-2555	329	-59	741	452728	5434472	401	2700
OSK-W-21-2564	132	-50	1002	452960	5435539	419	3425
OSK-W-21-2565	136	-57	717	452768	5435312	406	3150
OSK-W-21-2571	330	-56	708	452686	5434505	403	2700
OSK-W-21-2572	146	-50	777	452886	5435484	409	3350
OSK-W-21-2575	332	-58	690	452682	5434351	402	2625
OSK-W-21-2580	151	-59	138	453334	5435783	407	3875
OSK-W-21-2582	150	-52	159	453335	5435822	406	3900
WST-21-0741	178	-25	156	453507	5435326	-6	3800
WST-21-0839	140	-38	577	453321	5435235	55	3600
WST-21-0843	127	-34	115	453315	5435165	124	3575
WST-21-0851A	123	-40	618	453507	5435332	-48	3800
WST-21-0852A	141	-43	709	453321	5435236	54	3600
WST-21-0854A	134	-41	724	453374	5435296	-26	3675
WST-21-0858A	118	-41	643	453507	5435332	-48	3800
WST-21-0862A	151	-56	154	452954	5435003	252	3175
WST-21-0871	140	-50	582	453321	5435236	54	3600
WST-21-0872	135	-69	348	453508	5435327	-7	3800
WST-21-0873	152	-61	507	453105	5435065	231	3325

Zone 27

Caribou Zone

Underdog

Lynx Zone

Bobcat

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

F-Zones

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

Qualified Person

Quality Control and Reporting Protocols

About the Windfall Gold Deposit

About Osisko Mining Inc.

Cautionary Note Regarding Forward-Looking Information

CONTACT INFORMATION:

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

Long Section Infill EN 20210923

Long Section Expan EN 20210923

PR_EN_20210923_Surface

PR_EN_20210923_UG

OSISKO CONFIRMS NEW HIGH-GRADE GOLD DISCOVERY

Posted on September 14, 2021September 13, 2021 by lboivin

Golden Bear Expands to 3 Mineralized Zones

67.10 g/t Au Over 2.0 Metres, 62.15 g/t Au Over 2.0 Metres, 38.67 g/t Au Over 2.2 Metres

50,000 Metre Drill Program Begins

(Toronto, September 14, 2021) Osisko Mining Inc. (OSK:TSX. “Osisko” or the “Corporation”) is pleased to provide new results from the expanding Golden Bear discovery located approximately 1000 metres north of its 100% owned high-grade Windfall gold deposit, located in the Abitibi greenstone belt, Urban township, Eeyou Istchee James Bay, Québec.

Additional reconnaissance drilling has confirmed the Golden Bear discovery zone (“D1”) and has also identified two new mineralized zones (“D2” and “D3”). Drilling 50 metres south-east from D1 has defined the presence of parallel gold zone D2. Drilling 200 metres south-east of D1 has defined the presence of a third parallel zone of alteration hosting significant sulfide mineralization (D3). All three zones display alteration, sulfide mineralization and local visible gold, and all three remain open both up and down plunge and along strike. Golden Bear displays similar orientation features observed at Windfall where the principal mineralized areas, including Lynx, can occur as clusters of high-grade zones which extend laterally for over a kilometre.

Osisko Mining Chief Executive Officer John Burzynski commented: “Golden Bear is shaping up to be a potentially significant discovery, displaying in this early drilling the type of grades and widths we typically seen at Windfall. The new intercepts from D1, D2 and D3 have returned very respectable high-grade values. Visually these zones look similar to the Windfall mineralized zones, and we believe the Golden Bear mineralization occurred contemporaneously. The whole team is excited and we’ve begun applying the lessons we learned from Windfall over the past five years to Golden Bear, as we start to determine the scale of this new center of mineralization.”

Three drills have now been assigned to Golden Bear to explore along strike and up and down plunge, with more planned to join as the infill program at Windfall reaches completion. Selected high-grade intercepts are reported below. Maps showing hole locations and full analytical results are available at www.osiskomining.com.

D1 has currently been traced 170 metres along strike with a plunge to the east-northeast. Drill hole OSK-UB-21-273 returned 67.10 g/t Au over 2.0 metres 60 metres up-plunge from the discovery intercept (27.40 g/t Au over 6.7 metres in OSK-UB-21-232, see Osisko news release dated June 15, 2021). Drill holes OSK-UB-21-264 and OSK-UB-21-272 returned 14.90 g/t Au over 2.0 metres and 26.53 g/t Au over 2.2 metres, respectively, 50 metres and 70 metres down-plunge from the discovery intercept.

D2 is a sub-parallel mineralized trend 50 metres south-east from D1, which returned 62.15 g/t Au over 2.0 metres in hole OSK-UB-21-261.

D3 is located 200 metres south-east of D1, open in all directions, and is currently defined by one intercept: 38.67 g/t Au over 2.2 metres in drillhole OSK-UB-21-276; and pending assay results in OSK-UB-21-278, a 250-metre step-out hole to the east of OSK-UB-21-276.

Hole No.	From (m)	To (m)	Interval (m)	Au (g/t) uncut	Au (g/t) cut to 100 g/t	Corridor	Area
OSK-UB-21-232	503.0	509.7	6.7	27.40	17.20	Discovery (D1) (previously released)	Golden Bear
including	507.0	509.7	2.7	63.60	38.20
OSK-UB-21-232	434.5	437.0	2.5	4.74		D2	Golden Bear
	523.0	524.0	1.0	3.84		D1	Golden Bear
	530.1	530.6	0.5	11.00		D1	Golden Bear
OSK-UB-21-260	509.0	511.0	2.0	6.91		–	Golden Bear
OSK-UB-21-261	413.0	413.5	0.5	8.47		D2	Golden Bear
	463.0	465.0	2.0	62.15	50.70	D2	Golden Bear
*including*	463.0	464.0	1.0	123.00	100.00
	468.0	470.2	2.2	5.39		D2	Golden Bear
OSK-UB-21-263	394.6	396.5	1.9	4.75		D2	Golden Bear
*including*	394.9	395.5	0.6	14.80
OSK-UB-21-264	552.8	555.0	2.2	7.17		D1	Golden Bear
*including*	554.7	555.0	0.3	17.45
	559.0	559.8	0.8	14.80		D1	Golden Bear
	575.6	577.6	2.0	14.90		D1	Golden Bear
	579.5	581.3	1.8	3.56		D1	Golden Bear
OSK-UB-21-265	460.1	462.0	1.9	10.20		D1	Golden Bear
*including*	460.8	461.4	0.6	32.10
OSK-UB-21-266	453.2	454.1	0.9	5.49		D2	Golden Bear
OSK-UB-21-268	474.8	475.4	0.6	9.42		D1	Golden Bear
	577.2	577.7	0.5	16.60		–	Golden Bear
OSK-UB-21-272	483.8	486.0	2.2	26.53	23.16	D1	Golden Bear
*including*	484.3	484.7	0.4	119.00	100.00	D1	Golden Bear
OSK-UB-21-273	450.7	452.7	2.0	67.10		D1	Golden Bear
OSK-UB-21-274	563.2	566.7	3.5	5.84		D2	Golden Bear
OSK-UB-21-276	604.7	609.4	2.2	38.67	18.30	D3	Golden Bear
*including*	609.0	609.4	0.4	212.00	100.00	D3
OSK-UB-21-277	451.3	452.0	0.7	4.32		D1	Golden Bear
OSK-UB-21-278	766.5	774.0	7.5	Pending		D3	Golden Bear

Notes: True widths are currently unknown. See “Quality Control and Reporting Protocols” below.

Drill hole location

Hole Number	Azimuth (°)	Dip (°)	Length (m)	UTM E	UTM N	Elevation	Section
OSK-UB-21-232	350	-50	567	453190	5436568	408	N.A.
OSK-UB-21-260	350	-54	579	453190	5436565	408	N.A.
OSK-UB-21-261	352	-51	585	453190	5436565	408	N.A.
OSK-UB-21-263	349	-51	540	453190	5436608	408	N.A.
OSK-UB-21-264	354	-48	615	453187	5436519	408	N.A.
OSK-UB-21-265	199	-59	540	453194	5437109	430	N.A.
OSK-UB-21-266	185	-61	645	453194	5437109	430	N.A.
OSK-UB-21-268	185	-65	621	453194	5437109	430	N.A.
OSK-UB-21-269	177	-66	708	453233	5437077	429	N.A.
OSK-UB-21-270	184	-63	648	453194	5437109	430	N.A.
OSK-UB-21-271	175	-68	675	453233	5437077	429	N.A.
OSK-UB-21-272	181	-67	609	453194	5437109	430	N.A.
OSK-UB-21-273	207	-55	564	453194	5437109	430	N.A.
OSK-UB-21-274	175	-70	705	453233	5437077	429	N.A.
OSK-UB-21-276	177	-59	684	453233	5437077	429	N.A.
OSK-UB-21-277	211	-49	558	453194	5437109	430	N.A.

Note: N.A. = not applicable

The D1 discovery hole returned 27.40 g/t Au over 6.7 metres in OSK-UB-21-232. Golden Bear is a “blind” discovery in a geological setting with many similarities to Windfall. Windfall has an extensive alteration and mineralization footprint of over 4km strike length and approximately 3km vertical extent. The scale of Windfall indicates a significant mineralizing event in the Urban Barry belt. Many of the district intrusives hosting gold mineralization bear similar emplacement age dates, suggesting a district-scale mineralizing event was responsible for the Windfall deposit. Golden Bear is another example of this district-scale mineralization, and there is good potential that additional deposits remain to be discovered. Osisko’s extensive land package dominates the district and the principal mineralized structures in the Urban Barry gold camp.

A drill program of 50,000 metres, funded with cash on hand, is in progress to explore Golden Bear and the immediate surrounding areas. Maps showing the drill hole location and full analytical results are available at www.osiskomining.com

Golden Bear

Mineralization at D1 and D2 is hosted in altered dacite and occurs as pyrrhotite replacement in grey to translucent silica and quartz-carbonate-pyrrhotite veins. Replacement mineralization is associated with silica alteration and contains trace to 15% disseminated and clustered pyrrhotite with local visible gold and traces of sphalerite-chalcopyrite-galena. Vein-type mineralization is associated with a halo of pervasive sericite-chlorite ± ankerite alteration containing sulphides (predominantly pyrrhotite with local traces of sphalerite, chalcopyrite, pyrite, galena and arsenopyrite), and local visible gold. Mineralization at D3 is hosted in altered dacite associated with silica alteration and a halo of pervasive sericite-ankerite alteration, similar to D1 and D2. Mineralization within the silica alteration consists of trace to 10% pyrite ± pyrrhotite stringers with local visible gold and traces of sphalerite. Quartz-carbonate vein-type mineralization is also present and consists of trace to 5% pyrite-pyrrhotite and trace amounts of sphalerite.

Qualified Person

Quality Control and Reporting Protocols

True width determination is currently unknown but is estimated at 55-80% of the reported core length interval for the zone. Assays are uncut except where indicated. Intercepts occur within geological confines of major zones but have not been correlated to individual vein domains at this time. NQ core assays 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, Vancouver, British Colombia, Lima, Peru or Vientiane, Laos (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 a Four Acid Digestion-ICP-MS method at ALS Laboratories. Drill program design, Quality Assurance/Quality Control (“QA/QC”) and interpretation of results is performed by qualified persons employing a QA/QC program consistent with NI 43-101 and industry best practices. Standards and blanks are included with every 20 samples for QA/QC purposes by the Corporation as well as the lab. Approximately 5% of sample pulps are sent to secondary laboratories for check assay.

About the Windfall Gold Deposit

The Windfall gold deposit is located between Val-d’Or and Chibougamau in the Abitibi region of Québec, Canada. The Mineral Resource Estimate (“MRE”) defined by Osisko is supported by the technical report entitled “Preliminary Economic Assessment Update for the Windfall Project” dated April 26, 2021 (that includes Windfall Mineral Resource Estimate with an effective date of November 30, 2020) (the “2021 Windfall PEA“), and assuming a cut-off grade of 3.50 g/t Au, comprises 521,000 tonnes at 11.3 g/t Au (189,000 ounces) in the measured mineral resource category, 5,502,000 tonnes at 9.4 g/t Au (1,668,000 ounces) in the indicated mineral resource category and 16,401,000 tonnes at 8.0 g/t Au (4,244,000 ounces) in the inferred mineral resource category. The key assumptions, parameters and methods used to estimate the MRE are further described in the 2021 Windfall PEA prepared by BBA Inc. in accordance with NI 43-101, which is available on SEDAR (www.sedar.com) under the Corporation’s issuer profile. The Windfall gold deposit is currently one of the highest-grade resource-stage gold projects in Canada and has world-class scale. Mineralization occurs in three principal zones: Lynx, Main Zone, and Underdog. Mineralization is generally comprised of sub-vertical zones following intrusive porphyry contacts plunging to the northeast. The resources are defined from surface to a depth of 1,600 metres as it now includes the Triple 8 (T8) zone. The resources excluding T8 are defined from surface to a depth of 1,200 metres. The deposit remains open along strike and at depth. Mineralization has been identified at surface in some areas and as deep as 2,625 metres in others with significant potential to extend mineralization down-plunge and at depth.

Golden Bear is located approximately 1000 metres to the north of the Windfall gold deposit. Golden Bear is in early stages of drilling and has no current defined mineral resources.

About Osisko Mining Inc.

Cautionary Note Regarding Forward-Looking Information

This news release contains “forward-looking information” within the meaning of the applicable Canadian securities legislation that is based on expectations, estimates, projections and interpretations as at the date of this news release. Any statement that involves predictions, expectations, interpretations, beliefs, plans, projections, objectives, assumptions, future events or performance (often, but not always, using phrases such as “expects”, or “does not expect”, “is expected”, “interpreted”, “management’s view”, “anticipates” or “does not anticipate”, “plans”, “budget”, “scheduled”, “forecasts”, “estimates”, “potential”, “feasibility”, “believes” or “intends” or variations of such words and phrases or stating that certain actions, events or results “may” or “could”, “would”, “might” or “will” be taken to occur or be achieved) are not statements of historical fact and may be forward-looking information and are intended to identify forward-looking information. This news release contains the forward-looking information pertaining to, among other things: the significance of the new high-grade gold discovery; the prospects, if any, of Golden Bear; the mineralization of Golden Bear; the significance of drill results; the Windfall gold deposit being one of the highest-grade resource-stage gold projects in Canada and having world-class scale; the prospects, if any, of the Windfall gold deposit; the Lynx zone remaining open to expansion down plunge; upgrading a inferred mineral resource to a measured mineral resource or indicated mineral resource category; future drilling at the Windfall gold deposit; the significance of historic exploration activities and results. Such factors include, among others, risks relating to the ability of exploration activities (including drill results) to accurately predict mineralization; errors in management’s geological modelling; the ability of Osisko to complete further exploration activities, including (infill) drilling; property and royalty interests in the Windfall gold deposit; the ability of the Corporation to obtain required approvals; the results of exploration activities; risks relating to mining activities; the global economic climate; metal prices; dilution; environmental risks; and community and non-governmental actions. Although the forward-looking information contained in this news release is based upon what management believes, or believed at the time, to be reasonable assumptions, Osisko cannot assure shareholders and prospective purchasers of securities of the Corporation that actual results will be consistent with such forward-looking information, as there may be other factors that cause results not to be as anticipated, estimated or intended, and neither Osisko nor any other person assumes responsibility for the accuracy and completeness of any such forward-looking information. Osisko does not undertake, and assumes no obligation, to update or revise any such forward-looking statements or forward-looking information contained herein to reflect new events or circumstances, except as may be required by law.

CONTACT INFORMATION:

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

GoldenBear composite long section EN 20210914

GoldenBear plan map EN 20210914

OSISKO WINDFALL DRILLING RETURNS MORE HIGH-GRADE

Posted on September 7, 2021September 8, 2021 by lboivin

Including 512 g/t Au Over 2.4 Metres, 212 g/t Au Over 2.4 Metres in Lynx

(Toronto, September 7, 2021) Osisko Mining Inc. (OSK:TSX. “Osisko” or the “Corporation”) is pleased to provide new analytical results from the ongoing drill program at its 100% owned Windfall gold project located in the Abitibi greenstone belt, Urban Township, Eeyou Istchee James Bay, Québec.

Significant new analytical results presented below include 142 intercepts in 32 drill holes (16 from surface, 16 from underground) and 24 wedges. The infill intercepts are located inside defined February 2021 mineral resource estimate (“MRE”) blocks (see Osisko news release dated February 17, 2021). The expansion intercepts are located outside the February 2021 MRE blocks and either expand resource wireframes or are in a defined zone or corridor but do not yet correlate to a specific wireframe.

Osisko Chief Executive Officer John Burzynski commented: “Windfall continues to deliver high-grade intercepts, especially in the Lynx and Underdog zones. Infill drilling has consistently delivered throughout our drill campaign, which is winding down this fall as we approach the completion of our drilling for the feasibility study next year. The great potential for growth at Windfall continues to be demonstrated by new high-grade intercepts located outside the February 2021 resource blocks. Windfall has shown its ability to deliver high-grade results time and time again, it’s a strong and consistent mineralized system. As we move to completion of the infill program at Windfall, we are also beginning to move additional drills to the new Golden Bear discovery area and expect to have an update on our progress there in the coming weeks.”

Selected high-grade intercepts include: 512 g/t Au over 2.4 metres in WST-21-0833; 212 g/t Au over 2.4 metres in WST-21-0842; 86.8 g/t Au over 3.4 metres in OSK-W-21-2287-W4; 141 g/t Au over 2.0 metres and 29.0 g/t Au over 5.5 metres in OSK-W-21-2503-W4; 108 g/t Au over 2.3 metres in OSK-W-21-2531-W1; 42.1 g/t Au over 4.8 metres in OSK-W-21-2470; 17.3 g/t Au over 11.4 metres in OSK-W-21-2537-W1; 83.0 g/t Au over 2.0 metres in OSK-W-21-2548-W2, and 57.6 g/t Au over 2.1 metres in WST-21-0854A. Maps showing hole locations and full analytical results are available at www.osiskomining.com.

Infill Drilling

Hole No.	From (m)	To (m)	Interval (m)	Au (g/t) uncut	Au (g/t) cut to 100 g/t	Zone	Corridor
OSK-W-20-2292-W6	862.7	864.8	2.1	5.68		TLX_3184	Triple Lynx
OSK-W-20-2400	1051.7	1054.3	2.6	4.57		UDD_4903	Underdog
	1060.9	1063.0	2.1	17.7		UDD_4904	Underdog
including	1060.9	1061.9	1.0	37.0		UDD_4904	Underdog
OSK-W-21-1432-W5	932.8	935.0	2.2	3.76		LX4_3437	Lynx 4
	943.0	946.1	3.1	12.5		LX4_3437	Lynx 4
OSK-W-21-1827-W5	1101.7	1104.7	3.0	37.4		UDD_4513	Underdog
including	1102.7	1103.7	1.0	85.9		UDD_4513	Underdog
	1135.0	1137.0	2.0	5.12		UDD_4514	Underdog
OSK-W-21-1827-W6	503.7	505.7	2.0	8.94		CA2_2231	Caribou
	507.5	510.4	2.9	15.7		CA2_2231	Caribou
including	507.5	508.4	0.9	42.2		CA2_2231	Caribou
	514.1	516.3	2.2	6.59		CA2_2231	Caribou
including	514.1	514.6	0.5	27.2		CA2_2231	Caribou
	523.8	526.1	2.3	5.53		CA2_2241	Caribou
including	524.8	525.3	0.5	19.6		CA2_2241	Caribou
OSK-W-21-1882-W5	903.3	905.6	2.3	16.4		UDD_4515	Underdog
including	903.3	904.2	0.9	39.6		UDD_4515	Underdog
	957.0	959.0	2.0	4.30		UDD_4501	Underdog
	1020.5	1023.0	2.5	19.2		UDD_4910	Underdog
including	1020.5	1021.4	0.9	52.4		UDD_4910	Underdog
OSK-W-21-1949-W7	746.4	748.5	2.1	27.0	14.5	LXM_3345	Lynx
including	746.4	746.7	0.3	187	100	LXM_3345	Lynx
	1082.0	1084.0	2.0	3.51		LX4_3430	Lynx 4
OSK-W-21-2067-W7	1089.6	1093.0	3.4	7.02		TLX_3162	Triple Lynx
OSK-W-21-2287-W4	1285.2	1288.6	3.4	86.8	42.1	LX4_3449	Lynx 4
including	1285.9	1286.2	0.3	448	100
and	1286.2	1286.5	0.3	215	100
OSK-W-21-2287-W5	1252.9	1254.9	2.0	8.28		LX4_3449	Lynx 4
	1308.0	1310.7	2.7	23.2		LX4_3445	Lynx 4
OSK-W-21-2470	965.0	969.8	4.8	42.1	34.9	TLX_3163	Triple Lynx
including	969.2	969.8	0.6	158	100	TLX_3163	Triple Lynx
OSK-W-21-2479-W6	906.0	908.0	2.0	6.29		UDD_4502	Underdog
including	907.0	907.5	0.5	24.3		UDD_4502	Underdog
OSK-W-21-2479-W7	793.6	796.1	2.5	5.90		UDD_4107	Underdog
OSK-W-21-2479-W8	920.7	923.0	2.3	9.74		UDD_4502	Underdog
including	920.7	921.1	0.4	49.5		UDD_4502	Underdog
	959.8	961.8	2.0	8.06		UDD_4910	Underdog
OSK-W-21-2503-W4	967.1	972.6	5.5	29.0	23.3	TLX_3163	Triple Lynx
including	967.9	968.3	0.4	179	100	TLX_3163	Triple Lynx
	990.0	992.0	2.0	17.8		TLX_3164	Triple Lynx
including	991.3	992.0	0.7	39.7		TLX_3164	Triple Lynx
	1009.0	1011.0	2.0	141	20.1	TLX_3164	Triple Lynx
including	1009.7	1010.1	0.4	704	100	TLX_3164	Triple Lynx
OSK-W-21-2522-W4	656.0	658.8	2.8	12.3		LXM_3304	Lynx
OSK-W-21-2531-W1	789.0	791.0	2.0	5.48		UDD_4111	Underdog
including	790.0	790.7	0.7	11.3		UDD_4111	Underdog
	823.0	825.0	2.0	5.91		UDD_4110	Underdog
	887.6	891.5	3.9	22.0	21.1	UDD_4101	Underdog
including	887.6	888.0	0.4	109	100	UDD_4101	Underdog
	896.0	898.0	2.0	12.0		UDD_4100	Underdog
including	897.5	898.0	0.5	31.6		UDD_4100	Underdog
	901.0	903.0	2.0	10.7		UDD_4100	Underdog
including	901.0	902.0	1.0	20.5		UDD_4100	Underdog
	905.7	908.0	2.3	108	43.7	UDD_4100	Underdog
including	905.7	906.7	1.0	247	100	UDD_4100	Underdog
	1070.4	1072.8	2.4	8.05		UDD_4501	Underdog
including	1072.1	1072.8	0.7	27.3		UDD_4501	Underdog
	1181.0	1183.9	2.9	9.72		UDD_4512	Underdog
including	1182.8	1183.1	0.3	53.0		UDD_4512	Underdog
OSK-W-21-2532-W1	567.9	570.3	2.4	24.2		CA2_2206	Caribou
including	569.2	570.3	1.1	51.6		CA2_2206	Caribou
	758.0	760.0	2.0	3.96		UDD_4121	Underdog
	783.0	785.0	2.0	5.54		UDD_4101	Underdog
	800.3	804.0	3.7	20.2		UDD_4101	Underdog
including	802.3	803.1	0.8	69.7		UDD_4101	Underdog
	807.9	810.0	2.1	22.5		UDD_4100	Underdog
	815.0	817.0	2.0	6.57		UDD_4120	Underdog
including	816.2	816.7	0.5	25.6		UDD_4120	Underdog
	971.0	973.0	2.0	8.53		UDD_4511	Underdog
including	971.0	971.5	0.5	30.0		UDD_4511	Underdog
OSK-W-21-2532-W2	828.0	830.1	2.1	40.8	34.2	UDD_4100	Underdog
including	829.1	829.6	0.5	128	100	UDD_4100	Underdog
	887.4	889.4	2.0	9.66		UDD_4106	Underdog
	953.0	955.0	2.0	6.26		UDD_4107	Underdog
	983.6	985.9	2.3	16.4		UDD_4511	Underdog
including	983.6	984.0	0.4	40.2
and	985.5	985.9	0.4	53.1
	1015.2	1017.5	2.3	4.76		UDD_4501	Underdog
OSK-W-21-2537	909.4	914.4	5.0	6.90		TLX_3171	Triple Lynx
including	912.4	913.4	1.0	14.9		TLX_3171	Triple Lynx
	916.9	921.2	4.3	4.47		TLX_3171	Triple Lynx
	925.0	928.8	3.8	3.92		TLX_3171	Triple Lynx
	935.0	943.0	8.0	11.4		TLX_3161	Triple Lynx
including	939.4	940.4	1.0	42.6		TLX_3161	Triple Lynx
	1018.0	1020.0	2.0	10.3		TLX_3164	Triple Lynx
including	1019.0	1019.5	0.5	30.6		TLX_3164	Triple Lynx
OSK-W-21-2537-W1	559.0	561.0	2.0	5.91		TLX_3196	Triple Lynx
	586.8	589.0	2.2	11.2		TLX_3178	Triple Lynx
including	586.8	587.7	0.9	27.2		TLX_3178	Triple Lynx
	901.0	903.0	2.0	4.91		TLX_3171	Triple Lynx
	912.6	924.0	11.4	17.3		TLX_3171	Triple Lynx
including	912.6	913.7	1.1	52.0
and	918.8	919.4	0.6	46.5
OSK-W-21-2544	987.6	989.6	2.0	3.72		TLX_3195	Triple Lynx
including	987.6	987.9	0.3	15.3		TLX_3195	Triple Lynx
OSK-W-21-2548	721.0	723.0	2.0	22.5		CA2_2220	Caribou
including	721.0	721.6	0.6	73.8		CA2_2220	Caribou
OSK-W-21-2548-W1	758.0	760.0	2.0	3.86		CA2_2219	Caribou
including	759.0	760.0	1.0	7.67		CA2_2219	Caribou
OSK-W-21-2548-W2	757.0	759.0	2.0	83.0	53.0	CA2_2219	Caribou
including	757.0	758.0	1.0	160	100	CA2_2219	Caribou
	771.0	773.0	2.0	8.27		Caribou	Caribou
OSK-W-21-2551-W1	837.1	840.1	3.0	10.8		LX4_3414	Lynx 4
OSK-W-21-2552	600.0	602.2	2.2	3.60		UDD_4914	Underdog
including	600.5	600.8	0.3	17.9		UDD_4914	Underdog
	615.8	617.9	2.1	22.0		UDD_4103	Underdog
including	616.6	617.5	0.9	51.0		UDD_4103	Underdog
OSK-W-21-2555	635.0	637.1	2.1	7.43		CA2_2223	Caribou
OSK-W-21-2556	139.0	141.0	2.0	12.0		F51_6008	F-51
OSK-W-21-2560	603.9	609.4	5.5	19.3	15.0	UDD_4914	Underdog
including	609.0	609.4	0.4	159	100	UDD_4914	Underdog
OSK-W-21-2561	555.0	557.0	2.0	3.88		TLX_3178	Triple Lynx
	659.9	662.9	3.0	16.0		TLX_3171	Triple Lynx
OSK-W-21-2562	656.2	658.2	2.0	5.48		CA2_2208	Caribou
	683.0	692.0	9.0	11.6		CA2_2217	Caribou
including	685.2	685.6	0.4	97.1
and	688.5	689.0	0.5	42.3
OSK-W-21-2566	134.0	136.0	2.0	4.81		F51_6008	F-51
OSK-W-21-2567	137.7	139.8	2.1	22.1		F51_6008	F-51
including	138.1	139.0	0.9	43.3		F51_6008	F-51
WST-21-0718	79.5	82.1	2.6	3.95		LXM_3304	Lynx
including	81.7	82.1	0.4	10.0		LXM_3304	Lynx
WST-21-0772	347.0	349.0	2.0	4.62		TLX_3166	Triple Lynx
including	348.4	349.0	0.6	14.6		TLX_3166	Triple Lynx
WST-21-0797A	599.2	601.4	2.2	6.53		LX4_3429	Lynx 4
including	600.5	600.9	0.4	25.3		LX4_3429	Lynx 4
WST-21-0833	278.0	280.4	2.4	512	45.3	LHW_3201	Lynx HW
including	278.0	279.0	1.0	1220	100	LHW_3201	Lynx HW
WST-21-0835	281.0	283.0	2.0	4.67		LHW_3221	Lynx HW
	328.9	331.0	2.1	25.7		LHW_3215	Lynx HW
including	329.5	330.4	0.9	56.6		LHW_3215	Lynx HW
WST-21-0840	713.0	715.0	2.0	3.72		LX4_3412	Lynx 4
WST-21-0842	250.6	253.0	2.4	212	42.1	TLX_3161	Triple Lynx
including	251.1	251.6	0.5	917	100	TLX_3161	Triple Lynx
WST-21-0850	83.0	85.4	2.4	6.47		LXM_3339	Lynx
including	85.0	85.4	0.4	16.7		LXM_3339	Lynx
	267.8	270.1	2.3	8.14		LSW_3500	Lynx SW
including	268.3	268.9	0.6	29.6		LSW_3500	Lynx SW
	326.8	329.3	2.5	10.2		TLX_3166	Triple Lynx
including	326.8	327.3	0.5	49.0		TLX_3166	Triple Lynx
WST-21-0851A	168.6	170.7	2.1	13.4		LXM_3304	Lynx
including	169.1	169.4	0.3	87.5		LXM_3304	Lynx
	480.0	482.4	2.4	6.06		LX4_3430	Lynx 4
including	481.8	482.4	0.6	24.0		LX4_3430	Lynx 4
	518.6	521.0	2.4	5.93		LX4_3440	Lynx 4
including	518.6	519.4	0.8	16.4		LX4_3440	Lynx 4
	528.0	530.0	2.0	5.84		LX4_3434	Lynx 4
including	528.5	529.0	0.5	20.0		LX4_3434	Lynx 4
	590.0	592.2	2.2	4.93		LX4_3439	Lynx 4
including	590.0	590.6	0.6	16.1		LX4_3439	Lynx 4
WST-21-0852A	127.5	129.6	2.1	7.07		LXM_3334	Lynx
including	128.8	129.3	0.5	26.1		LXM_3334	Lynx
	420.1	422.3	2.2	3.98		LX4_3452	Lynx 4
including	420.6	421.3	0.7	11.3		LX4_3452	Lynx 4
	487.2	489.2	2.0	23.2		LX4_3450	Lynx 4
including	487.2	487.7	0.5	90.7		LX4_3450	Lynx 4
	648.0	650.0	2.0	11.1		LX4_3438	Lynx 4
including	649.3	649.6	0.3	34.7		LX4_3438	Lynx 4
	669.7	672.2	2.5	3.75		LX4_3415	Lynx 4
including	669.7	670.2	0.5	10.4		LX4_3415	Lynx 4
WST-21-0853A	289.3	291.3	2.0	6.49		TLX_3161	Triple Lynx
including	290.6	291.3	0.7	16.2		TLX_3161	Triple Lynx
	347.6	349.7	2.1	6.72		TLX_3163	Triple Lynx
including	348.4	349.1	0.7	19.0		TLX_3163	Triple Lynx
WST-21-0854A	185.9	188.0	2.1	57.6		TLX_3161	Triple Lynx
including	187.0	188.0	1.0	93.1		TLX_3161	Triple Lynx
	300.0	302.1	2.1	4.59		TLX_3182	Triple Lynx
including	300.8	301.5	0.7	12.8		TLX_3182	Triple Lynx
	353.7	356.0	2.3	3.91		TLX_3188	Triple Lynx
including	355.3	355.6	0.3	22.0		TLX_3188	Triple Lynx
	654.0	656.0	2.0	10.6		LX4_3448	Lynx 4
including	654.8	655.2	0.4	48.1		LX4_3448	Lynx 4
WST-21-0869	357.0	359.0	2.0	12.4		TLX_3167	Triple Lynx
	510.6	512.9	2.3	6.91		LX4_3450	Lynx 4
WST-21-0870	288.6	290.6	2.0	13.8		LSW	Lynx SW
including	289.8	290.2	0.4	51.0		LSW	Lynx SW
	299.0	301.0	2.0	18.0		LSW	Lynx SW
including	300.1	301.0	0.9	38.9		LSW	Lynx SW
	329.9	335.0	5.1	19.3		LSW_3556	Lynx SW
including	332.4	332.7	0.3	84.6		LSW_3556	Lynx SW
WST-21-0871	324.6	327.0	2.4	4.45		TLX_3131	Triple Lynx
including	324.6	324.9	0.3	35.0		TLX_3131	Triple Lynx

Notes: True widths are estimated at 55 – 80% of the reported core length interval. See “Quality Control and Reporting Protocols” below., LXM = Lynx Main, LX4 = Lynx 4, LHW = Lynx Hanging Wall, LSW = Lynx SouthWest, TLX = Triple Lynx and UDD = Underdog, CA2 = Caribou.

Expansion Drilling

Hole No.	From (m)	To (m)	Interval (m)	Au (g/t) uncut	Au (g/t) cut to 100 g/t	Zone	Corridor
OSK-W-21-1432-W5	895.5	898.0	2.5	5.81		LX4	Lynx 4
including	896.2	897.0	0.8	17.6		LX4	Lynx 4
OSK-W-21-1827-W5	1087.0	1089.5	2.5	14.7		UDD	Underdog
including	1087.0	1088.0	1.0	28.8		UDD	Underdog
OSK-W-21-2287-W4	1304.8	1307.0	2.2	4.26		LX4	Lynx 4
including	1305.4	1305.7	0.3	19.0		LX4	Lynx 4
	1373.0	1375.0	2.0	4.84		LX4	Lynx 4
OSK-W-21-2478-W5	555.0	557.0	2.0	4.90		Triple Lynx	Triple Lynx
OSK-W-21-2479-W7	759.0	761.0	2.0	3.88		UDD	Underdog
OSK-W-21-2513	256.2	259.0	2.8	3.95		F51	F51
OSK-W-21-2522-W4	697.0	700.0	3.0	4.68		Lynx	Lynx
OSK-W-21-2532-W1	826.6	829.1	2.5	11.6		Underdog	Underdog
including	827.6	828.2	0.6	47.4		Underdog	Underdog
OSK-W-21-2537	971.0	975.0	4.0	4.33		Triple Lynx	Triple Lynx
OSK-W-21-2540-W1	1132.1	1134.4	2.3	4.47		Triple Lynx	Triple Lynx
	1141.6	1143.7	2.1	4.27		Triple Lynx	Triple Lynx
including	1143.4	1143.7	0.3	17.7		Triple Lynx	Triple Lynx
OSK-W-21-2546-W1	579.0	581.4	2.4	4.06		Caribou extension	Caribou
including	580.0	580.4	0.4	23.0		Caribou extension	Caribou
	631.9	635.8	3.9	4.27		Caribou extension	Caribou
including	631.9	632.2	0.3	14.6
and	635.1	635.8	0.7	13.2
	819.7	822.0	2.3	4.78		Caribou extension	Caribou
including	819.7	820.5	0.8	11.0		Caribou extension	Caribou
OSK-W-21-2548	731.0	733.2	2.2	5.08		Caribou	Caribou
OSK-W-21-2548-W1	790.8	792.8	2.0	5.99		Caribou	Caribou
including	792.4	792.8	0.4	27.3		Caribou	Caribou
OSK-W-21-2549	461.0	463.0	2.0	13.4		Caribou	Caribou
including	461.5	461.9	0.4	55.5		Caribou	Caribou
	641.5	645.0	3.5	11.5		Caribou	Caribou
including	642.6	643.2	0.6	37.6		Caribou	Caribou
	705.4	708.0	2.6	14.7		Caribou	Caribou
including	705.4	706.1	0.7	32.2		Caribou	Caribou
OSK-W-21-2555	610.0	612.3	2.3	3.70		Caribou	Caribou
including	611.9	612.3	0.4	12.7		Caribou	Caribou
OSK-W-21-2559	656.0	658.0	2.0	5.86		Caribou	Caribou
OSK-W-21-2562	649.9	654.8	4.9	22.4		Caribou	Caribou
including	651.0	651.6	0.6	48.2		Caribou	Caribou
WST-21-0772	242.0	244.0	2.0	44.7		LSW	Lynx SW
including	242.7	243.6	0.9	99.1		LSW	Lynx SW
	249.0	251.0	2.0	3.63		LSW	Lynx SW
including	249.5	249.8	0.3	23.3		LSW	Lynx SW
WST-21-0831	160.8	163.0	2.2	4.45		LSW	Lynx SW
including	160.8	161.4	0.6	15.8		LSW	Lynx SW
	403.4	405.4	2.0	5.45		LSW	Lynx SW
including	403.8	404.4	0.6	17.2		LSW	Lynx SW
WST-21-0840	343.0	345.9	2.9	5.91		TLX	Triple Lynx
	374.5	377.0	2.5	11.4		TLX	Triple Lynx
WST-21-0850	417.7	420.0	2.3	42.5		LSW	Lynx SW
including	417.7	418.5	0.8	95.6		LSW	Lynx SW
WST-21-0852A	29.6	32.0	2.4	17.5		Lynx	Lynx
including	29.6	30.2	0.6	65.8		Lynx	Lynx
	146.0	148.0	2.0	4.19		Lynx	Lynx
including	146.3	146.7	0.4	20.4		Lynx	Lynx
WST-21-0854A	546.0	548.1	2.1	4.64		LX4	Lynx 4
WST-21-0871	570.9	573.0	2.1	9.34		LX4	Lynx 4

Notes: True widths are estimated at 55 – 80% of the reported core length interval. See “Quality Control and Reporting Protocols” below. LX4 = Lynx 4, LSW = Lynx SouthWest, TLX = Triple Lynx, UDD = Underdog.

Drill hole location

Hole Number	Azimuth (°)	Dip (°)	Length (m)	UTM E	UTM N	Elevation	Section
OSK-W-20-2292-W6	125	-54	1110	453035	5435561	420	3500
OSK-W-20-2400	336	-53	1230	452878	5434419	401	2825
OSK-W-21-1432-W5	132	-55	1041	453811	5435779	400	4300
OSK-W-21-1827-W5	331	-58	1203	452506	5434390	403	2475
OSK-W-21-1827-W6	331	-58	1281	452506	5434390	403	2475
OSK-W-21-1882-W5	328	-58	1071	452469	5434405	400	2450
OSK-W-21-1949-W7	105	-57	1312	453440	5435479	401	3825
OSK-W-21-2067-W7	123	-53	1166	453241	5435697	416	3750
OSK-W-21-2287-W4	116	-53	1437	453607	5435714	404	4075
OSK-W-21-2287-W5	116	-53	1380	453607	5435714	404	4075
OSK-W-21-2470	132	-59	1230	453304	5435639	415	3775
OSK-W-21-2478-W5	128	-54	1166	452997	5435607	425	3500
OSK-W-21-2479-W6	344	-55	1014	452315	5434419	399	2325
OSK-W-21-2479-W7	344	-55	999	452315	5434419	399	2325
OSK-W-21-2479-W8	344	-55	1026	452315	5434419	399	2325
OSK-W-21-2503-W4	126	-58	1191	453333	5435641	413	3800
OSK-W-21-2513	147	-45	281	453518	5436030	405	4150
OSK-W-21-2522-W4	128	-54	1208	453451	5435594	411	3900
OSK-W-21-2531-W1	344	-62	1215	452566	5434415	403	2550
OSK-W-21-2532-W1	341	-60	1035	452480	5434428	401	2475
OSK-W-21-2532-W2	341	-60	1145	452480	5434428	401	2475
OSK-W-21-2537	114	-54	1243	452981	5435549	420	3450
OSK-W-21-2537-W1	114	-54	1020	452981	5435549	420	3450
OSK-W-21-2540-W1	117	-60	1200	453465	5435640	410	3925
OSK-W-21-2544	128	-50	1161	452960	5435539	419	3425
OSK-W-21-2546-W1	140	-58	843	452768	5435312	406	3150
OSK-W-21-2548	331	-57	774	452829	5434550	398	2850
OSK-W-21-2548-W1	331	-57	837	452829	5434550	398	2850
OSK-W-21-2548-W2	331	-57	801	452829	5434550	398	2850
OSK-W-21-2549	332	-58	723	452703	5434455	401	2675
OSK-W-21-2551-W1	120	-55	978	453622	5435635	405	4050
OSK-W-21-2552	335	-52	684	452404	5434674	400	2525
OSK-W-21-2555	329	-59	741	452728	5434472	401	2700
OSK-W-21-2556	124	-50	198	453426	5435858	405	4000
OSK-W-21-2559	327	-51	825	452829	5434550	398	2850
OSK-W-21-2560	333	-53	684	452404	5434674	400	2525
OSK-W-21-2561	142	-51	801	452886	5435484	409	3350
OSK-W-21-2562	331	-56	753	452733	5434488	401	2725
OSK-W-21-2566	178	-58	189	453426	5435858	405	4000
OSK-W-21-2567	146	-60	186	453426	5435858	405	4000
WST-21-0718	162	0	100	453359	5435194	83	3625
WST-21-0772	148	-68	411	453104	5435065	231	3325
WST-21-0797A	138	-46	751	453321	5435235	54	3600
WST-21-0831	157	-63	526	452954	5435003	253	3175
WST-21-0833	122	-16	334	453463	5435327	32	3775
WST-21-0835	122	-27	385	453462	5435327	32	3775
WST-21-0840	143	-48	778	453258	5435209	96	3525
WST-21-0842	156	-69	445	453506	5435327	-7	3800
WST-21-0850	151	-64	532	453105	5435065	231	3325
WST-21-0851A	123	-40	618	453507	5435332	-48	3800
WST-21-0852A	141	-43	709	453321	5435236	54	3600
WST-21-0853A	150	-72	376	453505	5435328	-5	3800
WST-21-0854A	134	-41	724	453374	5435296	-26	3675
WST-21-0869	142	-47	622	453258	5435210	96	3525
WST-21-0870	134	-56	360	453106	5435066	231	3325
WST-21-0871	140	-50	582	453321	5435236	54	3600

Caribou Zone

Underdog

Lynx Zone

F-Zones

Qualified Person

Quality Control and Reporting Protocols

About the Windfall Gold Deposit

About Osisko Mining Inc.

Cautionary Note Regarding Forward-Looking Information

CONTACT INFORMATION:

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

Long Section infill EN 20210907

Long Section Expan EN 20210907

PR_EN_20210907_Surface

PR_EN_20210907_UG

OSISKO DRILLING RETURNS 2181 g/t Au OVER 2.5 METRES IN LYNX

Posted on August 3, 2021August 2, 2021 by lboivin

293 g/t Au Over 4.0 Metres in Zone 27

(Toronto, August 3, 2021) Osisko Mining Inc. (OSK:TSX. “Osisko” or the “Corporation”) is pleased to provide new analytical results from the ongoing drill program at its 100% owned Windfall gold project located in the Abitibi greenstone belt, Urban Township, Eeyou Istchee James Bay, Québec.

Significant new analytical results presented below include 73 intercepts in 22 drill holes (6 from surface, 16 from underground) and 16 wedges. The infill intercepts are located inside defined February 2021 mineral resource estimate (“MRE”) blocks (see Osisko news release dated February 17, 2021). The expansion intercepts are located outside the February 2021 MRE blocks and either expand resource wireframes or are in a defined zone or corridor but do not yet correlate to a specific wireframe.

Osisko Chief Executive Officer John Burzynski commented: “Windfall once again delivers outstanding results across the deposit. Six of our top results this week are greater than 200 g/t Au over 2.0 metres and three of these intervals have sub-intervals between two to six kilograms of gold per ton. These six holes are infill holes, once again confirming the high-grade nature of the deposit. Expansion drilling is also delivering; OSK-W-21-1949-W6 is 80 metres from the nearest resource block in the Lynx 4 corridor”.

Selected high-grade intercepts include: 2181 g/t Au over 2.5 metres and 403 g/t Au over 2.2 metres in OSK-W-21-2287-W1; 293 g/t Au over 4.4 metres in WST-21-0814; 350 g/t Au over 2.1 metres in OSK-W-21-2470-W6; 209 g/t Au over 2.9 metres in OSK-W-21-1432-W4; 218 g/t Au over 2.0 metres in OSK-W-21-2503-W2; 91.0 g/t Au over 3.8 metres in OSK-W-21-1432-W3; 82.1 g/t Au over 3.2 metres in WST-21-0811A; 89.0 g/t Au over 2.6 metres in OSK-W-21-2509; 94.2 g/t Au over 2.1 metres in OSK-W-21-2492-W5. Maps showing hole locations and full analytical results are available at www.osiskomining.com.

Infill Drilling

Hole No.	From (m)	To (m)	Interval (m)	Au (g/t) uncut	Au (g/t) cut to 100 g/t	Zone	Corridor
OSK-W-21-1432-W3	1033.4	1037.2	3.8	91.0	41.3	LX4_3446	Lynx 4
including	1033.4	1034.3	0.9	304	100	LX4_3446	Lynx 4
OSK-W-21-1432-W4	866.0	868.9	2.9	209	65.9	LX4_3424	Lynx 4
including	867.0	867.9	0.9	480	100	LX4_3424	Lynx 4
OSK-W-21-1827-W3	946.0	948.4	2.4	5.84		UDD_4515	Underdog
including	947.4	947.9	0.5	27.2		UDD_4515	Underdog
OSK-W-21-1949-W5	643.2	648.0	4.8	8.18		LXM_3304	Lynx
including	645.3	645.9	0.6	25.5		LXM_3304	Lynx
	1095.0	1097.2	2.2	7.28		LX4_3430	Lynx 4
OSK-W-21-2067-W9	1136.0	1138.3	2.3	36.4	23.7	TLX_3172	Triple Lynx
including	1137.5	1137.8	0.3	198	100	TLX_3172	Triple Lynx
OSK-W-21-2287-W1	1209.9	1212.4	2.5	2181	57.4	LX4_3449	Lynx 4
including	1210.4	1211.3	0.9	5950	100	LX4_3449	Lynx 4
	1215.0	1217.2	2.2	403	99.3	LX4_3449	Lynx 4
including	1216.1	1217.2	1.1	708	100	LX4_3449	Lynx 4
OSK-W-21-2287-W2	1149.7	1152.1	2.4	6.15		LX4_3455	Lynx 4
including	1151.3	1152.1	0.8	16.4		LX4_3455	Lynx 4
	1245.0	1248.4	3.4	4.54		LX4_3449	Lynx 4
	1262.4	1264.7	2.3	40.9	30.4	LX4_3445	Lynx 4
including	1264.1	1264.7	0.6	140	100	LX4_3445	Lynx 4
	1278.6	1280.7	2.1	57.0	34.1	LX4_3445	Lynx 4
including	1279.0	1279.7	0.7	169	100	LX4_3445	Lynx 4
OSK-W-21-2470-W6	812.5	814.7	2.2	4.27		TLX_3173	Triple Lynx
	958.0	960.1	2.1	350	36.0	TLX_3163	Triple Lynx
including	959.8	960.1	0.3	2300	100	TLX_3163	Triple Lynx
	967.0	969.5	2.5	10.1		TLX_3163	Triple Lynx
	1037.0	1039.0	2.0	5.73		TLX_3162	Triple Lynx
	1044.0	1046.2	2.2	10.3		TLX_3170	Triple Lynx
including	1045.6	1045.9	0.3	50.1		TLX_3170	Triple Lynx
	1081.0	1083.0	2.0	5.45		TLX_3172	Triple Lynx
including	1082.3	1082.6	0.3	23.1		TLX_3172	Triple Lynx
OSK-W-21-2492-W5	788.7	790.8	2.1	94.2	55.2	LX4_3424	Lynx 4
including	789.5	789.9	0.4	239	100	LX4_3424	Lynx 4
OSK-W-21-2503-W2	1121.0	1123.0	2.0	218	37.3	TLX_3172	Triple Lynx
including	1121.7	1122.4	0.7	617	100	TLX_3172	Triple Lynx
OSK-W-21-2528-W1	625.2	627.3	2.1	4.35		UDD_4914	Underdog
OSK-W-21-2531	1086.5	1092.0	5.5	3.57		UDD_4501	Underdog
OSK-W-21-2532	764.0	767.7	3.7	7.35		UDD_4116	Underdog
including	767.0	767.7	0.7	19.9		UDD_4116	Underdog
	997.0	999.0	2.0	5.04		UDD_4501	Underdog
	1023.0	1027.0	4.0	9.34		UDD_4502	Underdog
including	1024.1	1024.5	0.4	48.6		UDD_4502	Underdog
	1032.0	1034.0	2.0	4.05		UDD_4513	Underdog
including	1032.9	1033.3	0.4	17.0		UDD_4513	Underdog
OSK-W-21-2534	984.0	986.1	2.1	7.81		UDD_4106	Underdog
including	985.2	985.5	0.3	49.8		UDD_4106	Underdog
	1018.4	1020.4	2.0	16.1		UDD_4515	Underdog
including	1019.8	1020.1	0.3	75.7		UDD_4515	Underdog
OSK-W-21-2537	583.9	585.9	2.0	3.96		TLX_3178	Triple Lynx
OSK-W-21-2541	196.0	198.0	2.0	11.5		F51_6010	F-51
including	196.9	197.5	0.6	37.9		F51_6010	F-51
	210.0	212.5	2.5	7.42		F51_6008	F-51
WST-21-0679	314.7	317.0	2.3	4.79		TLX_3131	Triple Lynx
WST-21-0726	235.7	237.8	2.1	32.9		TLX_3161	Triple Lynx
WST-21-0763A	503.0	505.0	2.0	5.08		LX4_3434	Lynx 4
including	507.0	509.0	2.0	3.73		LX4_3434	Lynx 4
WST-21-0794	266.3	268.3	2.0	22.7		LHW_3201	Lynx HW
including	267.2	267.8	0.6	68.7		LHW_3201	Lynx HW
WST-21-0797A	486.0	489.9	3.9	4.92		LX4_3450	Lynx 4
	694.0	696.4	2.4	24.1		LX4	Lynx 4
including	694.6	695.0	0.4	96.8		LX4	Lynx 4
	716.9	720.6	3.7	6.16		LX4_3415	Lynx 4
	724.0	726.0	2.0	39.5	32.1	LX4_3415	Lynx 4
including	725.7	726.0	0.3	149	100	LX4_3415	Lynx 4
WST-21-0811A	209.0	211.0	2.0	73.4	55.0	TLX_3161	Triple Lynx
including	210.0	210.5	0.5	158	100	TLX_3161	Triple Lynx
	310.0	313.2	3.2	82.1	34.2	TLX_3182	Triple Lynx
including	312.5	313.2	0.7	304	100	TLX_3182	Triple Lynx
WST-21-0814	83.1	87.5	4.4	293	17.1	Z27_1102	Zone 27
including	83.1	83.5	0.4	3140	100	Z27_1102	Zone 27
WST-21-0814A	67.3	69.7	2.4	27.2	22.4	Z27_1115	Zone 27
including	68.1	68.6	0.5	123	100	Z27_1115	Zone 27
	75.1	77.5	2.4	8.13		Z27_1102	Zone 27
including	76.3	76.6	0.3	46.4		Z27_1102	Zone 27
WST-21-0817	74.0	76.0	2.0	4.64		Z27_1115	Zone 27
WST-21-0823	451.7	454.0	2.3	4.57		LX4_3430	Lynx 4
WST-21-0829	556.0	558.0	2.0	28.0		LX4_3450	Lynx 4
including	556.4	557.0	0.6	92.5		LX4_3450	Lynx 4
WST-21-0838	267.0	269.0	2.0	13.0		LSW_3506	Lynx SW
including	267.5	268.0	0.5	50.8		LSW_3506	Lynx SW
WST-21-0841	349.9	352.0	2.1	19.1		TLX_3166	Triple Lynx
including	350.5	351.5	1.0	39.6		TLX_3166	Triple Lynx

Notes: True widths are estimated at 55 – 80% of the reported core length interval. See “Quality Control and Reporting Protocols” below. Z27 = Zone 27, LXM = Lynx Main, LX4 = Lynx 4, LHW = Lynx Hanging Wall, TLX = Triple Lynx and UDD = Underdog.

Expansion Drilling

Hole No.	From (m)	To (m)	Interval (m)	Au (g/t) uncut	Au (g/t) cut to 100 g/t	Zone	Corridor
OSK-W-21-777-W2	627.6	629.6	2.0	9.53		Caribou	Caribou
including	628.0	628.8	0.8	21.4
OSK-W-21-1432-W4	907.8	910.0	2.2	16.4		LX4	Lynx 4
including	908.6	909.0	0.4	59.1		LX4	Lynx 4
	915.1	917.8	2.7	23.0		LX4	Lynx 4
including	916.2	917.0	0.8	60.9		LX4	Lynx 4
OSK-W-21-1827-W4	548.0	550.1	2.1	7.94		Caribou	Caribou
including	549.3	550.1	0.8	20.6		Caribou	Caribou
OSK-W-21-1949-W6	1175.0	1177.0	2.0	13.2		LX4	Lynx 4
including	1175.5	1176.0	0.5	30.1		LX4	Lynx 4
OSK-W-21-2470-W6	927.0	929.2	2.2	4.18		TLX	Triple Lynx
OSK-W-21-2478-W6	857.7	860.1	2.4	17.0		TLX_3171	Triple Lynx
including	859.4	860.1	0.7	54.8		TLX_3171	Triple Lynx
OSK-W-21-2479-W5	754.5	757.4	2.9	35.7	23.0	Underdog	Underdog
including	754.5	755.1	0.6	162	100	Underdog	Underdog
OSK-W-21-2503-W2	1142.5	1144.6	2.1	85.7	15.4	TLX	Triple Lynx
including	1144.0	1144.3	0.3	592	100	TLX	Triple Lynx
OSK-W-21-2509	619.1	621.7	2.6	89.0	44.3	Triple Lynx	Triple Lynx
including	620.3	621.0	0.7	266	100	Triple Lynx	Triple Lynx
OSK-W-21-2531	1035.0	1037.0	2.0	4.11		Underdog	Underdog
including	1035.7	1036.1	0.4	17.2		Underdog	Underdog
	1173.0	1176.6	3.6	5.85		UDD	Underdog
including	1173.0	1174.0	1.0	15.9		UDD	Underdog
OSK-W-21-2532	935.0	937.5	2.5	8.95		Underdog	Underdog
including	936.5	936.9	0.4	41.6		Underdog	Underdog
	1012.8	1015.0	2.2	25.3		UDD	Underdog
including	1012.8	1013.3	0.5	97.6		UDD	Underdog
OSK-W-21-2534	887.4	889.6	2.2	3.90		Underdog	Underdog
WST-21-0726	337.3	339.4	2.1	24.4	17.6	TLX	Triple Lynx
including	338.3	338.6	0.3	148	100	TLX	Triple Lynx
	348.7	351.0	2.3	17.7		TLX_3131	Triple Lynx
including	349.1	349.9	0.8	49.9		TLX_3131	Triple Lynx
WST-21-0776	229.6	231.6	2.0	10.0		Triple Lynx	Triple Lynx
including	230.9	231.6	0.7	28.2		Triple Lynx	Triple Lynx
WST-21-0811A	471.8	474.5	2.7	3.60		LX4	Lynx 4
WST-21-0823	445.0	447.0	2.0	5.10		LX4	Lynx 4
WST-21-0826	347.9	350.0	2.1	13.8		TLX_3166	Triple Lynx
including	348.4	348.7	0.3	57.3		TLX_3166	Triple Lynx
WST-21-0842	323.3	325.7	2.4	14.7	12.8	TLX	Triple Lynx
including	323.3	323.6	0.3	116	100	TLX	Triple Lynx
	333.8	337.3	3.5	5.28		TLX	Triple Lynx
including	335.4	336.0	0.6	12.8		TLX	Triple Lynx
	344.7	347.0	2.3	5.75		Triple Lynx	Triple Lynx
including	346.2	347.0	0.8	15.4		Triple Lynx	Triple Lynx

Notes: True widths are estimated at 55 – 80% of the reported core length interval. See “Quality Control and Reporting Protocols” below. LX4 = Lynx 4, TLX = Triple Lynx, UDD = Underdog.

Drill hole location

Hole Number	Azimuth (°)	Dip (°)	Length (m)	UTM E	UTM N	Elevation	Section
OSK-W-21-777-W2	330	-59	1170	452678	5434500	403	2675
OSK-W-21-1432-W3	132	-55	1094	453811	5435779	400	4300
OSK-W-21-1432-W4	132	-55	1053	453811	5435779	400	4300
OSK-W-21-1827-W3	331	-58	1251	452506	5434390	403	2475
OSK-W-21-1827-W4	331	-58	1046	452506	5434390	403	2475
OSK-W-21-1949-W5	105	-57	1301	453440	5435479	401	3825
OSK-W-21-1949-W6	105	-57	1227	453440	5435479	401	3825
OSK-W-21-2067-W9	123	-53	1164	453241	5435697	416	3750
OSK-W-21-2287-W1	116	-53	1374	453607	5435714	404	4075
OSK-W-21-2287-W2	116	-53	1392	453607	5435714	404	4075
OSK-W-21-2470-W6	132	-59	1119	453304	5435639	415	3775
OSK-W-21-2478-W6	128	-54	948	452997	5435607	425	3500
OSK-W-21-2479-W5	344	-55	978	452315	5434419	399	2325
OSK-W-21-2492-W5	122	-53	888	453687	5435676	401	4125
OSK-W-21-2503-W2	126	-58	1199	453333	5435641	413	3800
OSK-W-21-2509	132	-56	663	452825	5435340	414	3225
OSK-W-21-2528-W1	333	-54	720	452469	5434682	403	2600
OSK-W-21-2531	344	-62	1188	452566	5434415	403	2550
OSK-W-21-2532	341	-60	1107	452480	5434428	401	2475
OSK-W-21-2534	343	-59	1203	452549	5434363	401	2500
OSK-W-21-2537	114	-54	1243	452981	5435549	420	3450
OSK-W-21-2541	149	-47	285	453541	5436007	405	4175
WST-21-0679	145	-46	441	453257	5435209	96	3525
WST-21-0726	149	-64	454	453507	5435327	-7	3800
WST-21-0763A	120	-39	567	453507	5435332	-47	3800
WST-21-0776	160	-44	376	453257	5435209	96	3525
WST-21-0794	121	-11	315	453463	5435327	33	3775
WST-21-0797A	138	-46	751	453321	5435235	54	3600
WST-21-0811A	125	-44	708	453375	5435296	-26	3675
WST-21-0814	154	-6	96	451960	5434734	249	2175
WST-21-0814A	154	5	97	451960	5434734	250	2175
WST-21-0817	169	-10	111	451958	5434734	249	2175
WST-21-0823	120	-35	545	453507	5435332	-47	3800
WST-21-0826	129	-59	403	453106	5435066	231	3325
WST-21-0829	131	-49	576	453258	5435209	96	3525
WST-21-0838	131	-56	366	453106	5435066	231	3325
WST-21-0841	125	-65	438	453106	5435066	231	3325
WST-21-0842	156	-69	445	453506	5435327	-7	3800

Caribou Zone

Zone 27

Underdog

Lynx Zone

F-Zones

Qualified Person

Quality Control and Reporting Protocols

About the Windfall Gold Deposit

About Osisko Mining Inc.

Cautionary Note Regarding Forward-Looking Information

CONTACT INFORMATION:

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

Long Section In EN 20210803

Long Section Ex EN 20210803

PR_EN_20210803_Surface

PR_EN_20210803_UG

OSISKO DRILLING RETURNS HIGH-GRADE AT WINDFALL

Posted on July 20, 2021July 20, 2021 by lboivin

96.7 g/t Au Over 2.2 Metres in Triple Lynx

97.4 g/t Au Over 2.0 Metres in Underdog

(Toronto, July 20, 2021) Osisko Mining Inc. (OSK:TSX. “Osisko” or the “Corporation”) is pleased to provide new analytical results from the ongoing drill program at its 100% owned Windfall gold project located in the Abitibi greenstone belt, Urban Township, Eeyou Istchee James Bay, Québec.

Significant new analytical results presented below include 96 intercepts in 25 drill holes (7 from surface, 18 from underground) and 20 wedges. The infill intercepts are located inside defined February 2021 mineral resource estimate (“MRE”) blocks (see Osisko news release dated February 17, 2021). The expansion intercepts are located outside the February 2021 MRE blocks and either expand resource wireframes or are in a defined zone or corridor but do not yet correlate to a specific wireframe.

Osisko Chief Executive Officer John Burzynski commented: “The drill program at Windfall continues to deliver positive results. Both headline holes are infill holes from two different zones. Further, the first two intervals in hole OSK-W-21-2123-W5 extended Lynx 4 wireframe-3170 25 meters to depth and the third interval is in an adjacent area currently being modelled. Expansion drilling in the Triple Lynx corridor following up on hole OSK-W-20-2371-W1 which intersected 123 g/t Au over 2.4 meters (see Osisko news release dated April 8, 2021) successfully intercepted this new zone with the last interval in hole OSK-W-21-2275-W7. All these results will be included in the resource estimate update by the end of the year”.

Selected high-grade intercepts include: 96.7 g/t Au over 2.2 metres and 29.3 g/t Au over 5.2 metres in WST-21-0824; 49.9 g/t Au over 4.0 metres in OSK-W-21-2503-W1; 97.4 g/t Au over 2.0 metres in OSK-W-21-2512-W1; 69.9 g/t Au over 2.4 metres in OSK-W-21-2522; 67.0 g/t Au over 2.1 metres in WST-21-0791; 28.7 g/t Au over 4.1 metres in WST-21-0797A; 51.9 g/t Au over 2.2 metres in OSK-W-21-2512. Maps showing hole locations and full analytical results are available at www.osiskomining.com.

Infill Drilling

Hole No.	From (m)	To (m)	Interval (m)	Au (g/t) uncut	Au (g/t) cut to 100 g/t	Zone	Corridor
OSK-W-21-1827-W5	520.7	523.0	2.3	6.06		Caribou_2241	Caribou
including	520.7	521.7	1.0	13.4		Caribou_2241	Caribou
OSK-W-21-1882-W4	452.0	454.0	2.0	4.47		Caribou_2232	Caribou
including	453.4	454.0	0.6	14.1		Caribou_2232	Caribou
	790.9	793.0	2.1	6.17		UDD_4100	Underdog
including	791.2	791.5	0.3	32.4		UDD_4100	Underdog
OSK-W-21-2067-W9	1048.0	1050.0	2.0	10.1		TLX_3183	Triple Lynx
	1069.0	1071.0	2.0	6.57		TLX_3163	Triple Lynx
	1107.6	1111.5	3.9	5.52		TLX_3162	Triple Lynx
including	1110.7	1111.1	0.4	11.9		TLX_3162	Triple Lynx
	1114.3	1116.9	2.6	6.47		TLX_3170	Triple Lynx
including	1115.1	1115.6	0.5	16.0		TLX_3170	Triple Lynx
	1122.0	1124.0	2.0	12.3		TLX_3170	Triple Lynx
including	1123.0	1123.5	0.5	26.1		TLX_3170	Triple Lynx
	1126.3	1133.0	6.7	9.09		TLX_3170	Triple Lynx
including	1126.6	1127.0	0.4	28.0
and	1129.0	1130.0	1.0	24.7
OSK-W-21-2275-W7	793.0	795.2	2.2	13.2		TLX_3171	Triple Lynx
including	794.2	794.5	0.3	37.1		TLX_3171	Triple Lynx
OSK-W-21-2363-W5	700.0	702.0	2.0	3.67		TLX_3177	Triple Lynx
including	700.6	701.4	0.8	9.11		TLX_3177	Triple Lynx
	760.0	762.0	2.0	5.15		TLX_3171	Triple Lynx
including	760.5	761.0	0.5	19.7		TLX_3171	Triple Lynx
OSK-W-21-2478-W5	880.8	883.5	2.7	6.94		TLX_3184	Triple Lynx
including	880.8	881.1	0.3	38.8		TLX_3184	Triple Lynx
	984.0	986.0	2.0	11.3		TLX_3193	Triple Lynx
including	985.0	985.3	0.3	71.4		TLX_3193	Triple Lynx
OSK-W-21-2479-W5	956.2	958.5	2.3	14.2		UDD_4910	Underdog
including	956.2	956.5	0.3	38.4		UDD_4910	Underdog
	964.1	966.3	2.2	5.69		UDD_4514	Underdog
including	965.7	966.3	0.6	20.2		UDD_4514	Underdog
OSK-W-21-2492-W4	886.0	888.0	2.0	4.55		LX4_3417	Lynx 4
OSK-W-21-2495-W1	652.2	654.5	2.3	4.20		LXM_3304	Lynx
including	652.2	652.7	0.5	12.3		LXM_3304	Lynx
OSK-W-21-2503-W1	978.0	982.0	4.0	49.9	45.2	TLX_3163	Triple Lynx
including	978.4	979.1	0.7	127	100	TLX_3163	Triple Lynx
	1002.9	1005.0	2.1	5.90		TLX_3164	Triple Lynx
including	1004.6	1005.0	0.4	26.8		TLX_3164	Triple Lynx
OSK-W-21-2503-W2	995.0	997.0	2.0	5.99		TLX_3163	Triple Lynx
	1025.8	1028.0	2.2	9.54		TLX_3164	Triple Lynx
	1080.0	1082.0	2.0	37.1	18.1	TLX_3162	Triple Lynx
including	1080.7	1081.0	0.3	227	100	TLX_3162	Triple Lynx
	1084.4	1088.0	3.6	5.14		TLX_3162	Triple Lynx
including	1084.4	1084.8	0.4	22.5		TLX_3162	Triple Lynx
OSK-W-21-2512	735.8	738.0	2.2	51.9	26.4	UDD_4104	Underdog
including	736.2	736.7	0.5	212	100	UDD_4104	Underdog
OSK-W-21-2512-W1	765.0	767.0	2.0	97.4	50.1	UDD_4104	Underdog
including	766.0	767.0	1.0	195	100	UDD_4104	Underdog
	992.8	994.8	2.0	12.2		UDD_4910	Underdog
including	993.9	994.8	0.9	25.7		UDD_4910	Underdog
OSK-W-21-2520	878.0	880.0	2.0	4.05		UDD_4100	Underdog
including	878.9	879.4	0.5	15.3		UDD_4100	Underdog
OSK-W-21-2522	1003.5	1005.9	2.4	69.9	39.8	LX4_3430	Lynx 4
including	1003.9	1004.6	0.7	203	100	LX4_3430	Lynx 4
OSK-W-21-2528	224.8	227.2	2.4	4.90		Caribou_2100	Caribou
OSK-W-21-2531	619.7	621.9	2.2	4.64		Caribou_2233	Caribou
including	621.5	621.9	0.4	22.1		Caribou_2233	Caribou
OSK-W-21-2532	512.0	514.0	2.0	10.6		Caribou_2241	Caribou
including	512.0	512.4	0.4	40.5		Caribou_2241	Caribou
WST-21-0759	127.9	130.0	2.1	10.5		LXM_3334	Lynx
	337.0	341.6	4.6	6.33		TLX_3167	Triple Lynx
including	340.7	341.2	0.5	13.5		TLX_3167	Triple Lynx
	588.0	590.1	2.1	25.6		LX4_3427	Lynx 4
	663.5	665.5	2.0	34.9	25.7	LX4_3438	Lynx 4
including	665.0	665.5	0.5	137	100	LX4_3438	Lynx 4
WST-21-0770	529.4	531.4	2.0	7.80		LX4_3430	Lynx 4
WST-21-0791	97.9	101.6	3.7	4.57		LXM_3313	Lynx
	163.0	165.0	2.0	13.3		LXM_3304	Lynx
including	163.0	163.9	0.9	29.2		LXM_3304	Lynx
	167.5	169.8	2.3	14.8		LXM_3304	Lynx
including	169.3	169.8	0.5	42.0		LXM_3304	Lynx
	298.8	301.2	2.4	4.80		LHW_3215	Lynx HW
including	299.6	300.3	0.7	16.0		LHW_3215	Lynx HW
WST-21-0792	169.5	172.0	2.5	5.69		LXM_3304	Lynx
including	169.5	170.3	0.8	11.8		LXM_3304	Lynx
	296.1	298.3	2.2	23.2		LHW_3215	Lynx HW
including	296.1	297.1	1.0	48.8		LHW_3215	Lynx HW
WST-21-0793A	167.0	169.0	2.0	7.65		LXM_3304	Lynx
including	167.3	167.7	0.4	28.5		LXM_3304	Lynx
	240.6	242.6	2.0	4.99		LHW_3221	Lynx HW
including	241.5	242.3	0.8	11.4		LHW_3221	Lynx HW
WST-21-0794	282.0	284.0	2.0	6.73		LHW_3215	Lynx HW
	290.0	292.0	2.0	4.11		LHW_3215	Lynx HW
including	291.3	291.7	0.4	19.9		LHW_3215	Lynx HW
WST-21-0797A	125.6	127.6	2.0	45.5	23.9	LXM_3334	Lynx
including	126.3	126.7	0.4	208	100	LXM_3334	Lynx
	335.3	341.4	6.1	15.5		TLX_3131	Triple Lynx
including	339.3	340.3	1.0	35.5		TLX_3131	Triple Lynx
	350.6	354.7	4.1	28.7	25.2	TLX_3167	Triple Lynx
including	353.8	354.2	0.4	136	100	TLX_3167	Triple Lynx
	357.0	359.0	2.0	4.51		TLX_3167	Triple Lynx
WST-21-0801	287.3	289.9	2.6	21.3		Lynx SW	Lynx SW
WST-21-0807	325.4	327.8	2.4	3.74		TLX_3167	Triple Lynx
	480.8	483.0	2.2	25.1		LX4_3450	Lynx 4
including	481.8	482.5	0.7	72.1		LX4_3450	Lynx 4
WST-21-0816	69.0	71.4	2.4	4.88		Z27_1115	Zone 27
WST-21-0818	67.7	69.9	2.2	5.79		Z27_1115	Zone 27
WST-21-0822	62.4	64.4	2.0	6.39		Z27_1102	Zone 27
	117.6	119.8	2.2	16.2	14.2	Z27	Zone 27
including	118.5	118.8	0.3	114	100	Z27	Zone 27
WST-21-0824	261.6	263.8	2.2	96.7	27.1	TLX_3161	Triple Lynx
including	262.3	262.8	0.5	406	100	TLX_3161	Triple Lynx
	273.8	279.0	5.2	29.3		TLX_3161	Triple Lynx
including	275.0	276.0	1.0	89.0		TLX_3161	Triple Lynx
	283.5	285.5	2.0	3.59		TLX_3161	Triple Lynx
WST-21-0829	149.0	152.1	3.1	5.66		LXM_3334	Lynx
WST-21-0838	344.0	346.0	2.0	4.30		LSW_3556	Lynx SW

Notes: True widths are estimated at 55 – 80% of the reported core length interval. See “Quality Control and Reporting Protocols” below. Z27 = Zone 27, LSW = Lynx Southwest, LXM = Lynx Main, LX4 = Lynx 4, LHW = Lynx Hanging Wall, TLX = Triple Lynx and UDD = Underdog.

Expansion Drilling

Hole No.	From (m)	To (m)	Interval (m)	Au (g/t) uncut	Au (g/t) cut to 100 g/t	Zone	Corridor
OSK-W-21-1432-W3	950.0	952.5	2.5	37.5	32.7	Lynx 4	Lynx
including	951.0	951.5	0.5	124	100	Lynx 4	Lynx
OSK-W-21-1827-W4	1024.3	1026.5	2.2	4.14		Underdog	Underdog
including	1024.3	1024.6	0.3	20.0		Underdog	Underdog
OSK-W-21-2067-W8	996.0	999.0	3.0	4.34		Triple Lynx	Triple Lynx
OSK-W-21-2123-W5	1220.0	1222.0	2.0	5.99		Triple Lynx	Triple Lynx
including	1220.0	1220.5	0.5	20.2		Triple Lynx	Triple Lynx
	1233.0	1235.0	2.0	4.61		Triple Lynx	Triple Lynx
	1293.3	1295.7	2.4	9.77		Triple Lynx	Triple Lynx
including	1294.7	1295.7	1.0	19.8		Triple Lynx	Triple Lynx
OSK-W-21-2123-W6	1091.0	1093.0	2.0	6.76		Triple Lynx	Triple Lynx
	1144.0	1146.0	2.0	3.78		Triple Lynx	Triple Lynx
	1176.0	1178.0	2.0	6.57		Triple Lynx	Triple Lynx
including	1177.3	1177.6	0.3	43.2		Triple Lynx	Triple Lynx
OSK-W-21-2275-W7	766.9	769.0	2.1	3.55		Triple Lynx	Triple Lynx
including	766.9	767.2	0.3	24.5		Triple Lynx	Triple Lynx
	782.5	785.0	2.5	5.95		Triple Lynx	Triple Lynx
including	783.1	783.6	0.5	14.1
and	784.5	785.0	0.5	14.6
	862.0	864.0	2.0	5.04		Triple Lynx	Triple Lynx
including	862.5	862.9	0.4	13.4
and	863.7	864.0	0.3	12.6
	1113.4	1115.6	2.2	9.82		Triple Lynx	Triple Lynx
OSK-W-21-2287-W2	1259.0	1261.0	2.0	4.68		Lynx 4	Lynx
OSK-W-21-2470-W5	1166.0	1168.2	2.2	7.34		Triple Lynx	Triple Lynx
including	1166.5	1167.6	1.1	14.6		Triple Lynx	Triple Lynx
OSK-W-21-2479-W5	475.0	477.0	2.0	3.79		Z27	Zone 27
	842.0	844.0	2.0	8.61		Underdog	Underdog
including	842.5	843.3	0.8	21.4		Underdog	Underdog
OSK-W-21-2503-W2	981.0	983.1	2.1	4.27		Triple Lynx	Triple Lynx
	1040.0	1042.0	2.0	3.83		Triple Lynx	Triple Lynx
OSK-W-21-2512-W1	1009.0	1011.0	2.0	43.0	24.6	Underdog	Underdog
including	1009.6	1010.0	0.4	192	100	Underdog	Underdog
OSK-W-21-2522-W1	849.0	851.0	2.0	3.76		Lynx	Lynx
OSK-W-21-2528	283.0	285.0	2.0	4.97		Caribou	Caribou
including	284.3	285.0	0.7	13.4		Caribou	Caribou
	526.0	528.0	2.0	3.85		Z27	Zone 27
OSK-W-21-2533	252.0	254.0	2.0	5.39		F51	F51
WST-21-0682B	400.0	403.8	3.8	11.9		Lynx SW	Lynx SW
WST-21-0724	264.6	266.7	2.1	3.98		Triple Lynx	Triple Lynx
including	266.2	266.7	0.5	16.6		Triple Lynx	Triple Lynx
WST-21-0726	431.5	433.7	2.2	3.97		Triple Lynx	Triple Lynx
including	432.3	432.7	0.4	19.3		Triple Lynx	Triple Lynx
WST-21-0770	545.4	547.5	2.1	6.94		Lynx 4	Lynx
including	546.4	546.9	0.5	18.5		Lynx 4	Lynx
WST-21-0791	237.9	240.0	2.1	67.0	23.9	Lynx HW	Lynx
including	237.9	238.4	0.5	281	100	Lynx HW	Lynx
WST-21-0793A	235.5	237.6	2.1	3.71		Lynx HW	Lynx
including	236.4	237.3	0.9	7.71		Lynx HW	Lynx
WST-21-0797A	182.9	185.5	2.6	4.04		Lynx	Lynx
	380.2	382.4	2.2	35.9	24.2	Triple Lynx	Triple Lynx
including	382.1	382.4	0.3	186	100	Triple Lynx	Triple Lynx
WST-21-0829	359.6	363.0	3.4	6.81		Triple Lynx	Triple Lynx
including	362.0	363.0	1.0	15.5		Triple Lynx	Triple Lynx

Notes: True widths are estimated at 55 – 80% of the reported core length interval. See “Quality Control and Reporting Protocols” below. SW = Southwest, HW = Hanging Wall, Z27 = Zone 27.

Drill hole location

Hole Number	Azimuth (°)	Dip (°)	Length (m)	UTM E	UTM N	Elevation	Section
OSK-W-21-1432-W3	132	-55	1094	453811	5435779	400	4300
OSK-W-21-1827-W4	331	-58	1046	452506	5434390	403	2475
OSK-W-21-1827-W5	331	-58	1164	452506	5434390	403	2475
OSK-W-21-1882-W4	328	-58	1074	452469	5434405	400	2450
OSK-W-21-2067-W8	123	-53	1191	453241	5435697	416	3750
OSK-W-21-2067-W9	123	-53	1164	453241	5435697	416	3750
OSK-W-21-2123-W5	126	-57	1332	453235	5435774	409	3800
OSK-W-21-2123-W6	126	-57	1346	453235	5435774	409	3800
OSK-W-21-2275-W7	127	-49	1182	452888	5435583	409	3400
OSK-W-21-2287-W2	116	-53	1392	453607	5435714	404	4075
OSK-W-21-2363-W5	139	-52	1014	452930	5435548	419	3425
OSK-W-21-2470-W5	132	-59	1203	453304	5435639	415	3775
OSK-W-21-2478-W5	128	-54	1166	452997	5435607	425	3500
OSK-W-21-2479-W5	344	-55	978	452315	5434419	399	2325
OSK-W-21-2492-W4	122	-53	945	453687	5435676	401	4125
OSK-W-21-2495-W1	123	-54	1301	453426	5435565	410	3850
OSK-W-21-2503-W1	126	-58	1161	453333	5435641	413	3800
OSK-W-21-2503-W2	126	-58	1199	453333	5435641	413	3800
OSK-W-21-2512	331	-54	1041	452448	5434465	400	2475
OSK-W-21-2512-W1	331	-54	1089	452448	5434465	400	2475
OSK-W-21-2520	337	-56	1140	452596	5434392	401	2550
OSK-W-21-2522	128	-54	1221	453451	5435594	411	3900
OSK-W-21-2522-W1	128	-54	1116	453451	5435594	411	3900
OSK-W-21-2528	333	-54	738	452469	5434682	403	2600
OSK-W-21-2531	344	-62	1188	452566	5434415	403	2550
OSK-W-21-2532	341	-60	1107	452480	5434428	401	2475
OSK-W-21-2533	159	-45	321	453476	5436035	405	4125
WST-21-0682B	129	-64	472	453106	5435066	231	3325
WST-21-0724	131	-64	295	453508	5435327	-7	3800
WST-21-0726	149	-64	454	453507	5435327	-7	3800
WST-21-0759	141	-43	680	453321	5435235	54	3600
WST-21-0770	129	-43	835	453374	5435296	-26	3675
WST-21-0791	129	-21	355	453463	5435327	32	3775
WST-21-0792	126	-20	346	453463	5435327	32	3775
WST-21-0793A	127	-16	322	453463	5435327	33	3775
WST-21-0794	121	-11	315	453463	5435327	33	3775
WST-21-0797A	138	-46	751	453321	5435235	54	3600
WST-21-0801	139	-54	418	452954	5435003	253	3175
WST-21-0807	144	-42	508	453321	5435235	54	3600
WST-21-0816	164	-4	109	451960	5434734	250	2175
WST-21-0818	167	1	106	451958	5434734	250	2175
WST-21-0822	129	29	124	451961	5434734	251	2175
WST-21-0824	156	-70	343	453506	5435327	-7	3800
WST-21-0829	131	-49	576	453258	5435209	96	3525
WST-21-0838	131	-56	366	453106	5435066	231	3325

Caribou Zone

Zone 27

Underdog

Lynx Zone

Qualified Person

Quality Control and Reporting Protocols

About the Windfall Gold Deposit

About Osisko Mining Inc.

Cautionary Note Regarding Forward-Looking Information

CONTACT INFORMATION:

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

Long Section In EN 20210720

Long Section Ex EN 20210720

PR_EN_20210717_Surface

PR_EN_20210717_UG

OSISKO MINING INC. FILES EARLY WARNING REPORT

Posted on July 15, 2021 by lboivin

IN RESPECT OF O3 MINING INC.

Toronto, Ontario (July 14, 2021) – Osisko Mining Inc. (TSX:OSK) (the “Corporation“) announces that it has filed an early warning report in respect of its holdings in O3 Mining Inc. (“O3 Mining“). After giving effect to four trades ending on July 13, 2021, which settled through the facilities of the TSX Venture Exchange, the Corporation acquired an aggregate of 83,400 common shares of O3 Mining (“O3 Shares“), representing approximately 0.12% of the issued and outstanding O3 Shares, for aggregate gross proceeds of $185,309.72 (collectively, the “Acquisitions“).

At the time of the prior early warning report filed by the Corporation in respect of O3 Mining on August 17, 2020 (the “Prior Report“), the Corporation had beneficial ownership of, or control and direction over, 18,277,898 O3 Shares, representing approximately 30.3% of the issued and outstanding O3 Shares on a basic basis (based on there being 60,296,508 O3 Shares issued and outstanding as of the date of the Prior Report).

Since the date of the Prior Report and prior to giving effect to the Acquisitions, O3 Mining issued an aggregate of 7,743,758 O3 Shares, which through no action on the part of the Corporation, resulted in the Corporation’s ownership in O3 Shares being diluted to approximately 26.9% of the issued and outstanding O3 Shares on a basic basis (based on there being 68,040,266 O3 Shares issued and outstanding as of the date hereof and Osisko holding 18,277,898 O3 Shares (as disclosed in the Prior Report)).

Immediately after giving effect to the Acquisitions, Osisko had beneficial ownership of, or control and direction over, 18,361,298 O3 Shares, representing approximately 27.0% of the issued and outstanding O3 Shares on a basic basis (based on there being 68,040,266 O3 Shares issued and outstanding as of the date hereof).

The Corporation acquired the O3 Shares for investment purposes. The Corporation intends to review, on a continuous basis, various factors related to its investment in O3 Mining, and may decide to acquire or dispose of additional securities of O3 Mining as future circumstances may dictate.

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 July 14, 2021. The early warning report respecting the Acquisitions has been filed on SEDAR (www.sedar.com) under O3 Mining’s issuer profile. To obtain a copy of the early warning report filed by the Corporation, please contact John Burzynski at (416) 363-8653 or refer to SEDAR (www.sedar.com) under O3 Mining’s issuer profile.

For further information on the Corporation please contact:

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

The Corporation’s head office is located at 155 University Avenue, Suite 1440, Toronto, Ontario M5H 3B7.

OSISKO WINDFALL INFILL AND EXPANSION DRILLING CONTINUES TO ADD HIGH-GRADE

Posted on July 7, 2021July 6, 2021 by lboivin

75.4 g/t Au Over 3.2 Metres in Triple Lynx

103 g/t Au Over 2.3 Metres and 105 g/t Au Over 2.0 Metres in Lynx

(Toronto, July 07, 2021) Osisko Mining Inc. (OSK:TSX. “Osisko” or the “Corporation”) is pleased to provide new analytical results from the ongoing drill program at its 100% owned Windfall gold project located in the Abitibi greenstone belt, Urban Township, Eeyou Istchee James Bay, Québec.

Significant new analytical results presented below include 60 intercepts in 20 drill holes (5 from surface, 15 from underground) and 12 wedges. The infill intercepts are located inside defined February 2021 mineral resource estimate (“MRE”) blocks (see Osisko news release dated February 17, 2021). The expansion intercepts are located outside the February 2021 MRE blocks and either expand resource wireframes or are in a defined zone or corridor but do not yet correlate to a specific wireframe.

Osisko Chief Executive Officer John Burzynski commented: “Infill and expansion drilling from across the Windfall deposit continues to progress well. In particular, the focused infill drilling in all the Lynx zones consistently returns well distributed high-grade and expansion drilling is adding ounces. WST-21-0810 and OSK-W-21-2123-W5 both extended Triple Lynx wireframes, 25 metres and 40 meters at depth, respectively.”

Selected high-grade intercepts include: 75.4 g/t Au over 3.2 metres and 86.9 g/t Au over 2.4 metres in OSK-W-21-2470-W4; 103 g/t Au over 2.3 metres in WST-21-0722; 105 g/t Au over 2.0 metres in WST-21-0716; 29.5 g/t Au over 6.0 metres in OSK-W-21-2067-W8; 87.1 g/t Au over 2.0 metres in OSK-W-21-2067-W7; 42.3 g/t Au over 3.0 metres in OSK-W-21-1882-W3; 60.6 g/t Au over 2.0 metres in WST-21-0721 and 30.7 g/t Au over 3.9 metres in WST-21-0682B. Maps showing hole locations and full analytical results are available at www.osiskomining.com.

Infill Drilling

Hole No.	From (m)	To (m)	Interval (m)	Au (g/t) uncut	Au (g/t) cut to 100 g/t	Zone	Corridor
OSK-W-21-1882-W3	829.3	832.3	3.0	42.3		UDD_4102	Underdog
including	831.3	832.3	1.0	85.2		UDD_4102	Underdog
	936.0	938.0	2.0	4.12		UDD_4511	Underdog
including	936.0	936.5	0.5	16.3		UDD_4511	Underdog
OSK-W-21-2067-W7	1136.0	1138.0	2.0	87.1	20.1	TLX_3172	Triple Lynx
including	1136.8	1137.2	0.4	435	100	TLX_3172	Triple Lynx
OSK-W-21-2067-W8	1112.0	1118.0	6.0	29.5	20.1	TLX_3170	Triple Lynx
including	1115.4	1116.1	0.7	181	100	TLX_3170	Triple Lynx
OSK-W-21-2275-W7	675.0	677.0	2.0	4.70		TLX_3196	Triple Lynx
including	675.4	676.0	0.6	14.6		TLX_3196	Triple Lynx
OSK-W-21-2470-W4	956.0	958.0	2.0	3.85		TLX_3163	Triple Lynx
	961.6	964.0	2.4	86.9	35.3	TLX_3163	Triple Lynx
including	962.0	962.8	0.8	255	100	TLX_3163	Triple Lynx
	987.8	991.0	3.2	75.4	45.6	TLX_3164	Triple Lynx
including	987.8	988.5	0.7	236	100	TLX_3164	Triple Lynx
OSK-W-21-2478-W5	860.0	862.1	2.1	16.7		TLX_3184	Triple Lynx
including	860.7	861.7	1.0	34.1		TLX_3184	Triple Lynx
OSK-W-21-2479-W4	651.3	653.3	2.0	41.5	40.3	UDD_4100	Underdog
including	653.0	653.3	0.3	108	100	UDD_4100	Underdog
OSK-W-21-2503-W1	1022.8	1024.8	2.0	9.75		TLX_3164	Triple Lynx
including	1024.2	1024.8	0.6	25.6		TLX_3164	Triple Lynx
OSK-W-21-2520	639.0	643.2	4.2	9.87		CA2_2206	Caribou
including	639.0	639.3	0.3	64.6
and	642.5	643.2	0.7	26.3
OSK-W-21-2522-W1	655.2	657.3	2.1	10.0		LXM_3304	Lynx
including	656.2	656.6	0.4	41.6		LXM_3304	Lynx
	747.1	749.4	2.3	4.58		LXM_3345	Lynx
including	747.8	748.4	0.6	17.1		LXM_3345	Lynx
OSK-W-21-2523	503.5	507.7	4.2	4.27		CA2_2247	Caribou
including	503.5	504.0	0.5	13.1		CA2_2247	Caribou
	511.0	513.1	2.1	3.61		CA2_2241	Caribou
	522.7	529.0	6.3	8.53		CA2_2233	Caribou
including	528.4	529.0	0.6	39.7		CA2_2233	Caribou
OSK-W-21-2532	452.0	454.0	2.0	24.7		Caribou_2232	Caribou
including	453.0	454.0	1.0	49.0		Caribou_2232	Caribou
OSK-W-21-2534	558.4	560.6	2.2	9.81		Caribou_2247	Caribou
WST-21-0682A	89.8	92.0	2.2	19.8		LXM_3339	Lynx
including	90.1	91.0	0.9	47.7		LXM_3339	Lynx
WST-21-0682B	105.5	107.6	2.1	6.82		LXM_3311	Lynx
including	106.9	107.3	0.4	25.7		LXM_3311	Lynx
	349.0	352.0	3.0	32.7	29.9	TLX_3166	Triple Lynx
including	349.0	349.3	0.3	128	100	TLX_3166	Triple Lynx
	357.6	361.5	3.9	30.7		TLX_3166	Triple Lynx
including	358.0	358.6	0.6	68.0
and	360.8	361.5	0.7	78.0
	363.5	365.7	2.2	5.78		TLX_3166	Triple Lynx
	456.0	458.0	2.0	24.5		TLX_3130	Triple Lynx
including	456.0	456.6	0.6	74.6		TLX_3130	Triple Lynx
WST-21-0716	26.5	28.5	2.0	22.1		LXM_3303	Lynx
including	27.1	28.0	0.9	47.4		LXM_3303	Lynx
	81.0	83.0	2.0	105	33.1	LXM_3304	Lynx
including	81.4	82.0	0.6	339	100	LXM_3304	Lynx
	87.0	89.0	2.0	17.7		LXM_3304	Lynx
including	87.0	87.7	0.7	50.4		LXM_3304	Lynx
WST-21-0720	80.2	82.5	2.3	8.25		LXM_3336	Lynx
including	80.8	81.3	0.5	35.9		LXM_3336	Lynx
	92.3	94.7	2.4	8.99		LXM_3304	Lynx
WST-21-0721	92.0	94.0	2.0	60.6	60.2	LXM_3304	Lynx
including	92.4	93.6	1.2	101	100	LXM_3304	Lynx
WST-21-0722	25.3	27.6	2.3	103	25.2	LXM_3303	Lynx
including	26.5	27.0	0.5	459	100	LXM_3303	Lynx
WST-21-0759	325.1	327.2	2.1	3.96		TLX_3131	Triple Lynx
WST-21-0778	313.4	315.7	2.3	5.23		TLX_3131	Triple Lynx
including	314.4	315.0	0.6	18.0		TLX_3131	Triple Lynx
	511.0	513.0	2.0	28.3		LX4_3429	Lynx 4
including	512.0	513.0	1.0	51.5		LX4_3429	Lynx 4
WST-21-0789B	325.6	327.9	2.3	8.20		TLX_3166	Triple Lynx
including	325.9	326.8	0.9	17.0		TLX_3166	Triple Lynx
WST-21-0801	306.5	308.6	2.1	11.5		LSW_3556	Lynx Southwest
including	307.0	307.7	0.7	33.7		LSW_3556	Lynx Southwest
WST-21-0810	344.0	346.0	2.0	4.77		TLX_3131	Triple Lynx
	373.0	376.0	3.0	5.08		TLX_3167	Triple Lynx
	531.0	533.0	2.0	33.8	25.2	LX4_3450	Lynx 4
including	532.1	532.6	0.5	135	100	LX4_3450	Lynx 4
	736.8	738.9	2.1	22.2		LX4_3412	Lynx 4
including	737.6	737.9	0.3	78.9		LX4_3412	Lynx 4
WST-21-0815	81.0	83.0	2.0	4.09		Z27_1102	Zone 27
WST-21-0819A	79.0	81.0	2.0	3.89		Z27_1115	Zone 27
including	80.1	81.0	0.9	8.45		Z27_1115	Zone 27
WST-21-0820	92.5	95.0	2.5	3.56		Z27_1102	Zone 27
WST-21-0827	247.7	250.0	2.3	13.4		TLX_3161	Triple Lynx

Notes: True widths are estimated at 55 – 80% of the reported core length interval. See “Quality Control and Reporting Protocols” below. Z27 = Zone 27, CA2 = Caribou 2, LSW = Lynx Southwest, LXM = Lynx Main, LX4 = Lynx 4, TLX = Triple Lynx, and UDD = Underdog.

Expansion Drilling

Hole No.	From (m)	To (m)	Interval (m)	Au (g/t) uncut	Au (g/t) cut to 100 g/t	Zone	Corridor
OSK-W-21-2123-W5	1154.6	1159.0	4.4	16.6		Triple Lynx	Lynx
including	1154.6	1155.0	0.4	42.9
and	1156.0	1156.4	0.4	61.4
and	1157.6	1158.0	0.4	41.9
	1203.0	1205.0	2.0	5.59		Triple Lynx	Lynx
including	1203.8	1204.1	0.3	13.3		Triple Lynx	Lynx
	1209.0	1211.0	2.0	4.32		Triple Lynx	Lynx
OSK-W-21-2470-W3	956.8	958.8	2.0	45.7	30.6	Triple Lynx	Lynx
including	957.3	957.9	0.6	151	100	Triple Lynx	Lynx
	989.8	991.8	2.0	16.2		Triple Lynx	Lynx
including	991.2	991.5	0.3	80.1		Triple Lynx	Lynx
OSK-W-21-2479-W4	426.0	428.0	2.0	19.2		Zone 27	Main Zone
including	427.3	428.0	0.7	49.9		Zone 27	Main Zone
OSK-W-21-2480-W3	731.5	733.5	2.0	26.4		Lynx	Lynx
including	732.5	733.5	1.0	51.8		Lynx	Lynx
OSK-W-21-2523	409.5	412.0	2.5	7.42		Caribou	Main Zone
including	409.5	410.3	0.8	16.2		Caribou	Main Zone
OSK-W-21-2540	824.5	826.5	2.0	4.94		Lynx Main	Lynx
including	825.9	826.5	0.6	15.8		Lynx Main	Lynx
WST-21-0682B	375.0	377.0	2.0	4.08		Lynx SW	Lynx
	384.0	386.1	2.1	5.90		Lynx SW	Lynx
including	385.6	386.1	0.5	24.2		Lynx SW	Lynx
WST-21-0759	29.7	32.0	2.3	6.83		Lynx Main	Lynx
WST-21-0778	323.0	325.0	2.0	10.7		Triple Lynx	Lynx
including	323.3	323.6	0.3	69.0		Triple Lynx	Lynx
WST-21-0789B	371.0	373.0	2.0	4.42		Triple Lynx	Lynx
including	372.6	373.0	0.4	19.3		Triple Lynx	Lynx
WST-21-0810	450.2	453.0	2.8	25.2		Triple Lynx	Lynx
including	452.5	453.0	0.5	96.7		Triple Lynx	Lynx

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

Drill hole location

Hole Number	Azimuth (°)	Dip (°)	Length (m)	UTM E	UTM N	Elevation	Section
OSK-W-21-1882-W3	328	-58	1004	452469	5434405	400	2450
OSK-W-21-2067-W7	123	-53	1166	453241	5435697	416	3750
OSK-W-21-2067-W8	123	-53	1191	453241	5435697	416	3750
OSK-W-21-2123-W5	126	-57	1332	453235	5435774	409	3800
OSK-W-21-2275-W7	127	-49	1182	452888	5435583	409	3400
OSK-W-21-2470-W3	132	-59	1209	453304	5435639	415	3775
OSK-W-21-2470-W4	132	-59	1155	453304	5435639	415	3775
OSK-W-21-2478-W5	128	-54	1166	452997	5435607	425	3500
OSK-W-21-2479-W4	344	-55	761	452315	5434419	399	2325
OSK-W-21-2480-W3	121	-55	810	453412	5435633	412	3875
OSK-W-21-2503-W1	126	-58	1161	453333	5435641	413	3800
OSK-W-21-2520	337	-56	1140	452596	5434392	401	2550
OSK-W-21-2522-W1	128	-54	1116	453451	5435594	411	3900
OSK-W-21-2523	340	-58	1107	452480	5434428	402	2475
OSK-W-21-2532	341	-60	1107	452480	5434428	401	2475
OSK-W-21-2534	343	-59	1203	452549	5434363	401	2500
OSK-W-21-2540	117	-60	1025	453465	5435640	410	3925
WST-21-0682A	133	-66	139	453106	5435066	231	3325
WST-21-0682B	129	-64	472	453106	5435066	231	3325
WST-21-0716	160	-3	97	453359	5435194	83	3625
WST-21-0720	162	2	103	453359	5435194	84	3625
WST-21-0721	166	-1	103	453359	5435194	83	3625
WST-21-0722	166	1	106	453359	5435194	84	3625
WST-21-0759	141	-43	680	453321	5435235	54	3600
WST-21-0778	145	-31	534	453374	5435296	-26	3675
WST-21-0789B	125	-55	381	453106	5435066	231	3325
WST-21-0801	139	-54	418	452954	5435003	253	3175
WST-21-0810	138	-47	765	453257	5435209	96	3525
WST-21-0815	159	0	99	451960	5434734	250	2175
WST-21-0819A	173	-2	100	451957	5434735	250	2175
WST-21-0820	179	18	115	451957	5434735	250	2175
WST-21-0827	145	-66	313	453507	5435327	-7	3800

Caribou Zone

Zone 27

Underdog

Lynx Zone

Qualified Person

Quality Control and Reporting Protocols

About the Windfall Gold Deposit

About Osisko Mining Inc.

Cautionary Note Regarding Forward-Looking Information

CONTACT INFORMATION:

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

OSISKO RELEASES 2020 SUSTAINABLE DEVELOPMENT REPORT

Posted on July 6, 2021July 20, 2021 by lboivin

(Toronto, July 06, 2021) Osisko Mining Inc. (OSK:TSX “Osisko” or the “Corporation”), is pleased to announce that it has published its 2020 Sustainable Development report which provides a detailed overview of the Company’s environmental, social, and governance (ESG) performance and economic contributions to the communities in which we operate. The report is available on the Osisko website www.osiskomining.com in English and French.

In 2020, Osisko Mining worked to responsibly manage the effects of the COVID-19 pandemic; our top focus was keeping our workers and communities healthy and safe. We continued to deliver on our commitment of being a good corporate citizen by engaging with stakeholders, concentrating on environmental stewardship, and being an economic stimulus for our host communities.

We strengthened our policies covering Health & Safety, Human Resources, Environment and Community Relations. We lowered our lost time incident frequency rate (LTIFR) by 20% and have maintained a safe work environment for our employees and contractors at Windfall since we started exploration activities in 2015. We continue to minimize our effect on the environment through rigorous water, waste and spill management, land reclamation and advance closure planning.

The report covers Osisko Mining Inc. activities on our Windfall, Quévillon, and Urban Barry projects. It describes our ESG performance from January 1 to December 31, 2020 and gives comparative data from previous years.

About Osisko Mining Inc.

CONTACT INFORMATION:

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

OSISKO MINING-2020 SD REPORT-EN-LR

OSISKO WINDFALL INFILL AND EXPANSION DRILLING ADDS HIGH-GRADE

Posted on June 29, 2021June 28, 2021 by lboivin

232 g/t Au Over 2.0 Metres

195 g/t Au over 2.3 Metres

(Toronto, June 29, 2021) Osisko Mining Inc. (OSK:TSX. “Osisko” or the “Corporation”) is pleased to provide new analytical results from the ongoing drill program at its 100% owned Windfall gold project located in the Abitibi greenstone belt, Urban Township, Eeyou Istchee James Bay, Québec.

Significant new analytical results presented below include 60 intercepts in 16 drill holes (8 from surface, 8 from underground) and 13 wedges. The infill intercepts are located inside defined February 2021 mineral resource estimate (“MRE”) blocks (see Osisko news release dated February 17, 2021). The expansion intercepts are located outside the February 2021 MRE blocks and either expand resource wireframes or are in a defined zone or corridor but do not yet correlate to a specific wireframe.

Osisko Chief Executive Officer John Burzynski commented: “Drilling at Windfall continues to progress well in both infill and expansion holes. Today’s result include four intervals greater than 180 g/t gold over two metres in three different zones in Lynx and Caribou. Also of note is hole WST-21-0706, which extends a Lynx Southwest wireframe 30 metres towards furface. Results continue to add confidence in the continuity of the deposit and our modelling.”

Selected high-grade intercepts include: 232 g/t Au over 2.0 metres in OSK-W-21-2522; 195 g/t Au over 2.3 metres in OSK-W-21-2470-W3; 180 g/t Au over 2.3 metres in OSK-W-21-777-W1; 186 g/t Au over 2.2 metres in WST-21-0725; 148 g/t Au over 2.2 metres in OSK-W-21-2478-W3; 16.0 g/t Au over 8.2 metres in WST-21-0734A; 24.2 g/t Au over 5.0 metres in OSK-W-21-2526; 52.3 g/t Au over 2.2 metres in OSK-W-21-2520. Maps showing hole locations and full analytical results are available at www.osiskomining.com.

Infill Drilling

Hole No.	From (m)	To (m)	Interval (m)	Au (g/t) uncut	Au (g/t) cut to 100 g/t	Zone	Corridor
OSK-W-17-777	821.0	823.4	2.4	3.91		UDD_4116	Underdog
	1075.0	1077.0	2.0	11.1		UDD_4915	Underdog
including	1075.9	1076.2	0.3	67.3		UDD_4915	Underdog
OSK-W-17-838	674.0	676.0	2.0	8.27		Caribou_2558	Caribou
including	674.9	675.3	0.4	40.7		Caribou_2558	Caribou
OSK-W-20-2280-W8	996.0	998.3	2.3	31.4	30.2	TLX_3163	Triple Lynx
including	997.2	997.7	0.5	106	100	TLX_3163	Triple Lynx
OSK-W-21-1827-W3	796.0	798.0	2.0	6.31		UDD_4121	Underdog
including	796.9	797.3	0.4	27.0		UDD_4121	Underdog
OSK-W-21-1882-W3	809.7	812.0	2.3	3.63		UDD_4100	Underdog
including	810.7	811.0	0.3	26.8		UDD_4100	Underdog
OSK-W-21-2067-W8	1029.0	1031.2	2.2	9.66		TLX_3183	Triple Lynx
	1053.0	1055.0	2.0	20.8		TLX_3163	Triple Lynx
	1087.0	1089.0	2.0	12.8		TLX_3162	Triple Lynx
	1103.0	1105.0	2.0	7.17		TLX_3170	Triple Lynx
including	1104.0	1104.3	0.3	37.4		TLX_3170	Triple Lynx
	1126.0	1128.0	2.0	4.11		TLX_3172	Triple Lynx
OSK-W-21-2275-W6	812.0	814.1	2.1	17.0	15.5	TLX_3184	Triple Lynx
including	813.5	813.8	0.3	111	100	TLX_3184	Triple Lynx
OSK-W-21-2470-W4	967.0	969.0	2.0	15.5		TLX_3163	Triple Lynx
OSK-W-21-2478-W3	862.5	864.7	2.2	148	76.9	TLX_3171	Triple Lynx
including	863.4	864.3	0.9	252	100	TLX_3171	Triple Lynx
	875.1	877.2	2.1	14.4		TLX_3184	Triple Lynx
including	875.1	875.4	0.3	91.2		TLX_3184	Triple Lynx
OSK-W-21-2479-W3	891.0	893.4	2.4	8.36		UDD_4501	Underdog
including	892.0	892.7	0.7	23.6		UDD_4501	Underdog
OSK-W-21-2479-W4	662.9	665.0	2.1	9.62		UDD_4102	Underdog
including	664.0	664.6	0.6	24.1		UDD_4102	Underdog
	678.0	680.0	2.0	19.5		UDD_4102	Underdog
including	679.0	679.6	0.6	46.6		UDD_4102	Underdog
	755.0	757.0	2.0	6.31		UDD_4107	Underdog
OSK-W-21-2512	759.6	761.7	2.1	20.9		UDD_4106	Underdog
including	759.6	760.5	0.9	47.3		UDD_4106	Underdog
	781.0	783.0	2.0	22.2		UDD_4106	Underdog
including	781.8	782.4	0.6	72.1		UDD_4106	Underdog
	862.0	864.3	2.3	6.75		UDD_4905	Underdog
including	864.0	864.3	0.3	23.8		UDD_4905	Underdog
OSK-W-21-2512-W1	667.0	671.7	4.7	12.1		UDD_4116	Underdog
including	668.2	668.5	0.3	64.3		UDD_4116	Underdog
	673.0	675.0	2.0	4.19		UDD_4116	Underdog
including	674.6	675.0	0.4	18.0		UDD_4116	Underdog
	697.0	699.0	2.0	3.85		UDD_4100	Underdog
OSK-W-21-2520	535.8	538.0	2.2	52.3	24.8	Caribou_2232	Caribou
including	537.5	538.0	0.5	221	100	Caribou_2232	Caribou
	541.0	543.0	2.0	5.92		Caribou_2232	Caribou
including	542.5	543.0	0.5	19.0		Caribou_2232	Caribou
	611.0	613.0	2.0	12.9		Caribou_2233	Caribou
including	611.6	612.2	0.6	39.3		Caribou_2233	Caribou
	653.0	655.0	2.0	25.0		Caribou_2206	Caribou
including	654.0	655.0	1.0	49.9		Caribou_2206	Caribou
OSK-W-21-2522	654.0	656.0	2.0	3.88		LXM_3304	Lynx
	746.3	748.3	2.0	232	37.2	LXM_3345	Lynx
including	747.6	748.0	0.4	1075	100	LXM_3345	Lynx
OSK-W-21-2523	992.0	994.0	2.0	11.7		UDD_4501	Underdog
including	993.0	994.0	1.0	23.3		UDD_4501	Underdog
OSK-W-21-2526	248.3	253.3	5.0	24.2		F51_6008	F-51
including	248.3	249.2	0.9	63.5		F51_6008	F-51
OSK-W-21-2534	538.3	540.4	2.1	17.5		Caribou_2211	Caribou
including	538.3	538.7	0.4	53.0		Caribou_2211	Caribou
	543.0	545.4	2.4	25.9	21.6	Caribou_2211	Caribou
including	543.0	543.5	0.5	121	100	Caribou_2211	Caribou
WST-21-0682B	116.0	118.0	2.0	6.21		LXM_3311	Lynx
WST-21-0725	238.6	240.8	2.2	186	56.9	TLX_3161	Triple Lynx
including	239.0	239.8	0.8	400	100	TLX_3161	Triple Lynx
	292.0	294.2	2.2	8.13		TLX_3163	Triple Lynx
including	293.6	294.2	0.6	26.8		TLX_3163	Triple Lynx
WST-21-0727A	328.0	330.1	2.1	18.6	17.5	TLX_3163	Triple Lynx
including	328.4	328.7	0.3	108	100	TLX_3163	Triple Lynx
WST-21-0775	429.5	431.5	2.0	4.21		TLX_3165	Triple Lynx
WST-21-0790	283.0	285.1	2.1	12.9		LXSW_3500	Lynx SW
including	283.4	283.7	0.3	87.9		LXSW_3500	Lynx SW
WST-21-0824	304.9	307.5	2.6	11.4		TLX_3185	Triple Lynx
	314.4	318.0	3.6	4.79		TLX_3163	Triple Lynx

Notes: True widths are estimated at 55 – 80% of the reported core length interval. See “Quality Control and Reporting Protocols” below. UDD = Underdog, LXM = Lynx Main, TLX = Triple Lynx, and LXSW = Lynx Southwest.

Expansion Drilling

Hole No.	From (m)	To (m)	Interval (m)	Au (g/t) uncut	Au (g/t) cut to 100 g/t	Zone	Corridor
OSK-W-21-777-W1	377.6	381.6	4.0	8.48		Caribou	Caribou
including	377.6	377.9	0.3	46.2		Caribou	Caribou
	442.4	444.7	2.3	180	33.5	Caribou	Caribou
including	444.3	444.7	0.4	942	100	Caribou	Caribou
OSK-W-21-2067-W8	1080.0	1082.0	2.0	4.39		Triple Lynx	Triple Lynx
OSK-W-21-2470-W3	1151.0	1153.3	2.3	195	15.9	Triple Lynx	Triple Lynx
including	1152.4	1152.7	0.3	1470	100	Triple Lynx	Triple Lynx
OSK-W-21-2478-W3	1055.0	1057.0	2.0	16.4		Triple Lynx	Triple Lynx
including	1056.5	1057.0	0.5	64.1		Triple Lynx	Triple Lynx
OSK-W-21-2479-W3	624.7	627.0	2.3	11.6		UDD_4100	Underdog
including	625.1	625.5	0.4	61.4		UDD_4100	Underdog
OSK-W-21-2487-W5	691.5	693.5	2.0	14.8		Lynx 4	Lynx
OSK-W-21-2522	944.3	946.7	2.4	3.90		Lynx 4	Lynx
including	946.2	946.7	0.5	11.1		Lynx 4	Lynx
OSK-W-21-2523	958.0	960.0	2.0	3.80		Underdog	Underdog
	1057.0	1059.0	2.0	7.28		Underdog	Underdog
	1069.0	1071.0	2.0	6.76		Underdog	Underdog
including	1069.8	1070.5	0.7	19.2		Underdog	Underdog
WST-21-0706	215.0	217.5	2.5	7.45		Lynx SW	Lynx SW
including	215.9	216.5	0.6	24.6		Lynx SW	Lynx SW
WST-21-0725	313.5	315.5	2.0	24.1		Triple Lynx	Triple Lynx
including	313.5	314.5	1.0	47.8		Triple Lynx	Triple Lynx
	326.0	328.0	2.0	11.6		Triple Lynx	Triple Lynx
including	327.0	328.0	1.0	22.8		Triple Lynx	Triple Lynx
WST-21-0734A	259.1	267.3	8.2	16.0	12.3	Lynx SW	Lynx SW
including	266.0	266.5	0.5	161	100	Lynx SW	Lynx SW
WST-21-0775	211.0	213.0	2.0	14.1		Triple Lynx	Triple Lynx
WST-21-0790	327.0	329.3	2.3	7.41		Lynx SW	Lynx SW
including	327.9	328.2	0.3	54.3		Lynx SW	Lynx SW

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

Drill hole location

Hole Number	Azimuth (°)	Dip (°)	Length (m)	UTM E	UTM N	Elevation	Section
OSK-W-17-777	330	-59	1221	452678	5434500	403	2675
OSK-W-17-838	329	-65	726	453144	5434900	398	3275
OSK-W-20-2280-W8	127	-58	1134	453304	5435639	415	3775
OSK-W-21-777-W1	330	-59	969	452678	5434500	403	2675
OSK-W-21-1827-W3	331	-58	996	452506	5434390	403	2475
OSK-W-21-1882-W3	328	-58	1004	452469	5434406	400	2450
OSK-W-21-2067-W8	123	-53	866	453241	5435696	415	3750
OSK-W-21-2275-W6	127	-49	864	452888	5435583	409	3400
OSK-W-21-2470-W3	132	-59	1209	453304	5435639	415	3775
OSK-W-21-2470-W4	132	-59	1155	453304	5435639	415	3775
OSK-W-21-2478-W3	128	-54	1080	452997	5435607	425	3500
OSK-W-21-2479-W3	344	-55	1014	452315	5434419	399	2325
OSK-W-21-2479-W4	344	-55	402	452315	5434419	399	2325
OSK-W-21-2487-W5	359	-73	771	454135	5435058	397	4225
OSK-W-21-2512	331	-54	855	452448	5434465	400	2475
OSK-W-21-2512-W1	331	-54	1089	452448	5434465	400	2475
OSK-W-21-2520	337	-56	351	452596	5434392	401	2550
OSK-W-21-2522	128	-54	450	453451	5435594	411	3900
OSK-W-21-2523	340	-58	1105	452480	5434428	402	2475
OSK-W-21-2526	159	-44	287	453519	5436029	406	4150
OSK-W-21-2534	343	-59	1203	452549	5434363	401	2500
WST-21-0682B	129	-64	472	453106	5435066	231	3325
WST-21-0706	165	-54	417	453104	5435065	231	3325
WST-21-0725	160	-67	391	453507	5435327	-7	3800
WST-21-0727A	146	-69	361	453507	5435327	-7	3800
WST-21-0734A	129	-56	360	452956	5435003	253	3175
WST-21-0775	153	-44	469	453256	5435210	95	3525
WST-21-0790	171	-65	406	453104	5435065	231	3325
WST-21-0824	156	-70	343	453506	5435327	-7	3800

Caribou Zone

F-Zones

Underdog

Lynx Zone

Qualified Person

Quality Control and Reporting Protocols

About the Windfall Gold Deposit

About Osisko Mining Inc.

Cautionary Note Regarding Forward-Looking Information

CONTACT INFORMATION:

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

MENU

Author: lboivin

OSISKO WINDFALL DRILLING RETURNS 3,979 g/t Au OVER 2.3 METRES

Drill hole location

OSISKO DRILLING RETURNS 632 g/t Au OVER 5.3 METRES IN LYNX

Drill hole location

OSISKO CONFIRMS NEW HIGH-GRADE GOLD DISCOVERY

Drill hole location

OSISKO WINDFALL DRILLING RETURNS MORE HIGH-GRADE

Drill hole location

OSISKO DRILLING RETURNS 2181 g/t Au OVER 2.5 METRES IN LYNX

Drill hole location

OSISKO DRILLING RETURNS HIGH-GRADE AT WINDFALL

Drill hole location

OSISKO MINING INC. FILES EARLY WARNING REPORT

OSISKO WINDFALL INFILL AND EXPANSION DRILLING CONTINUES TO ADD HIGH-GRADE

Drill hole location

OSISKO RELEASES 2020 SUSTAINABLE DEVELOPMENT REPORT

OSISKO WINDFALL INFILL AND EXPANSION DRILLING ADDS HIGH-GRADE

Drill hole location

Head Office

Social Media