OSISKO INFILL DRILLING RETURNS HIGH GRADE AT WINDFALL

Posted on March 30, 2021November 8, 2023 by lboivin

73.3 g/t Au over 4.4 metres in Underdog

67.3 g/t Au Over 2.3 Metres in Caribou

(Toronto, March 30, 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 52 intercepts in 15 drill holes (12 from surface, 3 from underground) and 7 wedges. The intercepts are located inside defined February 2021 mineral resource estimate (“MRE”) blocks (see Osisko news release dated February 17, 2021).

Selected high-grade intercepts include: 73.3 g/t Au over 4.4 metres in OSK-W-20-2407-W1; 36.7 g/t Au over 5.9 metres in OSK-W-20-2423; 67.3 g/t Au over 2.3 metres in OSK-W-21-2460-W1; 21.3 g/t Au over 5.2 metres in OSK-W-20-2415-W1 and 50.2 g/t Au over 2.1 metres in OSK-W-20-2414. 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-20-2359	631.7	633.7	2.0	21.1		Caribou_2214	Caribou
	636.1	644.0	7.9	10.2		Caribou_2214	Caribou
including	642.0	643.0	1.0	30.6		Caribou_2214	Caribou
OSK-W-20-2387	639.0	641.0	2.0	6.72		Caribou_2214	Caribou
	647.0	649.4	2.4	4.55		Caribou_2214	Caribou
OSK-W-20-2387-W1	652.4	654.7	2.3	16.7		Caribou_2233	Caribou
including	653.0	653.6	0.6	55.9		Caribou_2233	Caribou
OSK-W-20-2399	663.0	665.0	2.0	9.93		Caribou_2212	Caribou
including	663.7	664.6	0.9	20.6		Caribou_2212	Caribou
OSK-W-20-2399-W2	690.0	692.0	2.0	44.9	15.4	Caribou_2212	Caribou
including	691.7	692.0	0.3	297	100	Caribou_2212	Caribou
OSK-W-20-2405-W2	631.4	633.4	2.0	7.61		Caribou_2214	Caribou
including	631.9	632.4	0.5	24.9		Caribou_2214	Caribou
OSK-W-20-2407-W1	649.0	651.1	2.1	28.2		Underdog_4101	Underdog
including	649.0	649.8	0.8	44.1		Underdog_4101	Underdog
	702.6	707.0	4.4	73.3		Underdog_4102	Underdog
	748.0	750.0	2.0	18.0		Underdog_4106	Underdog
including	748.3	749.3	1.0	35.1		Underdog_4106	Underdog
	812.0	814.3	2.3	13.6		Underdog_4906	Underdog
including	812.0	812.8	0.8	38.0		Underdog_4906	Underdog
OSK-W-20-2414	827.6	829.7	2.1	50.2	33.3	Caribou_2252	Caribou
including	829.2	829.7	0.5	171	100	Caribou_2252	Caribou
	858.0	860.1	2.1	30.6	24.8	Caribou_2219	Caribou
including	858.7	859.2	0.5	125	100	Caribou_2219	Caribou
OSK-W-20-2415-W1	703.0	708.0	5.0	4.45		Caribou_2220	Caribou
	714.0	716.0	2.0	9.34		Caribou_2218	Caribou
	722.2	727.4	5.2	21.3		Caribou_2218	Caribou
including	722.2	722.6	0.4	79.8		Caribou_2218	Caribou
	729.7	731.8	2.1	5.17		Caribou_2218	Caribou
including	729.7	730.0	0.3	29.7		Caribou_2218	Caribou
OSK-W-20-2423	276.0	279.0	3.0	18.3		Caribou_2106	Caribou
including	277.0	277.5	0.5	48.3		Caribou_2106	Caribou
	595.0	597.0	2.0	3.58		Caribou_2241	Caribou
	817.7	820.0	2.3	8.64		Underdog_4121	Underdog
including	817.7	818.3	0.6	17.8		Underdog_4121	Underdog
	843.0	845.0	2.0	4.92		Underdog_4116	Underdog
including	843.5	844.0	0.5	18.8		Underdog_4116	Underdog
	943.0	948.9	5.9	36.7	28.4	Underdog_4102	Underdog
including	948.2	948.9	0.7	171	100	Underdog_4102	Underdog
	1019.0	1021.0	2.0	7.97		Underdog_4511	Underdog
	1048.0	1050.0	2.0	26.5		Underdog_4501	Underdog
including	1049.2	1050.0	0.8	66.2		Underdog_4501	Underdog
	1187.8	1193.0	5.2	13.1		Underdog_4514	Underdog
	1200.3	1203.0	2.7	8.75		Underdog_4512	Underdog
OSK-W-20-2425	556.6	558.7	2.1	18.2		Caribou_2215	Caribou
including	557.1	557.4	0.3	86.2		Caribou_2215	Caribou
	561.0	563.0	2.0	5.85		Caribou_2215	Caribou
OSK-W-20-2439	196.8	199.0	2.2	5.54		F11_6001	F-11
OSK-W-21-2442	747.0	749.0	2.0	3.61		Underdog_4107	Underdog
	754.0	756.0	2.0	6.78		Underdog_4107	Underdog
OSK-W-21-2460	652.0	654.0	2.0	16.1		Caribou_2220	Caribou
including	653.1	654.0	0.9	35.5		Caribou_2220	Caribou
	708.6	711.4	2.8	4.06		Caribou_2219	Caribou
OSK-W-21-2460-W1	530.1	533.0	2.9	8.66		Caribou_2236	Caribou
including	530.1	531.0	0.9	19.6		Caribou_2236	Caribou
	559.0	563.2	4.2	3.14		Caribou_2210	Caribou
	667.0	669.3	2.3	67.3	42.8	Caribou_2220	Caribou
including	668.5	669.0	0.5	209	100	Caribou_2220	Caribou
	709.0	711.4	2.4	5.11		Caribou_2218	Caribou
including	710.5	711.4	0.9	13.1		Caribou_2218	Caribou
OSK-W-21-2462	586.0	592.7	6.7	3.58		Caribou_2523	Caribou
	710.6	712.9	2.3	3.09		Caribou_2212	Caribou
	840.5	845.0	4.5	8.34		Caribou_2549	Caribou
including	844.0	844.4	0.4	17.9		Caribou_2549	Caribou
OSK-W-21-2462-W1	480.9	483.0	2.1	20.4		Caribou_2536	Caribou
including	480.9	481.9	1.0	42.3		Caribou_2536	Caribou
	594.8	597.0	2.2	4.77		Caribou_2523	Caribou
including	595.6	596.2	0.6	13.7		Caribou_2523	Caribou
OSK-W-21-2463	582.1	586.0	3.9	6.72		Caribou_2241	Caribou
OSK-W-21-2476	506.4	508.6	2.2	6.94		Caribou_2536	Caribou
including	508.2	508.6	0.4	28.4		Caribou_2536	Caribou
	671.6	674.0	2.4	11.0		Caribou_2212	Caribou
including	671.6	672.4	0.8	24.8		Caribou_2212	Caribou
WST-20-0595	82.7	84.8	2.1	10.3		Bobcat_2350	Bobcat
including	83.1	83.7	0.6	28.2		Bobcat_2350	Bobcat
WST-20-0604	332.2	334.5	2.3	3.91		Caribou_2253	Caribou
including	332.5	333.3	0.8	11.0		Caribou_2253	Caribou
	336.3	338.5	2.2	6.00		Caribou_2253	Caribou
including	336.3	336.6	0.3	36.8		Caribou_2253	Caribou
WST-21-0598	53.0	55.3	2.3	3.18		Bobcat	Bobcat
	104.6	106.6	2.0	4.34		Bobcat_2335	Bobcat
	120.0	122.0	2.0	3.57		Bobcat	Bobcat
including	120.7	121.0	0.3	20.6		Bobcat	Bobcat

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

Drill hole location

Hole Number	Azimuth (°)	Dip (°)	Length (m)	UTM E	UTM N	Elevation	Section
OSK-W-20-2359	335	-61	726	452694	5434440	401	2675
OSK-W-20-2387	336	-59	717	452694	5434440	401	2675
OSK-W-20-2387-W1	336	-59	738	452694	5434440	401	2675
OSK-W-20-2399	333	-54	864	452874	5434552	398	2875
OSK-W-20-2399-W2	333	-54	876	452874	5434552	398	2875
OSK-W-20-2405-W2	332	-58	710	452694	5434440	401	2675
OSK-W-20-2407-W1	347	-55	1044	452315	5434419	399	2325
OSK-W-20-2414	337	-54	882	452880	5434419	402	2825
OSK-W-20-2415-W1	328	-54	762	452738	5434474	401	2725
OSK-W-20-2423	332	-60	1326	452616	5434449	403	2600
OSK-W-20-2425	336	-60	747	452715	5434606	397	2775
OSK-W-20-2439	147	-50	360	452515	5436029	406	3275
OSK-W-21-2442	347	-53	1053	452315	5434419	399	2325
OSK-W-21-2460	332	-55	789	452732	5434537	399	2750
OSK-W-21-2460-W1	332	-55	795	452732	5434537	399	2750
OSK-W-21-2462	338	-57	888	452874	5434552	398	2875
OSK-W-21-2462-W1	338	-57	855	452874	5434552	398	2875
OSK-W-21-2463	339	-65	1335	452616	5434449	403	2600
OSK-W-21-2476	337	-58	807	452840	5434569	398	2850
WST-20-0595	111	-23	150	452818	5434944	274	3025
WST-20-0604	153	-58	373	452281	5434975	262	2575
WST-21-0598	135	5	144	452817	5434944	275	3025

Caribou Zone

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

F-Zone

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.

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.

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.

Qualified Person

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

Quality Control and Reporting Protocols

True width determination is estimated at 55-80% of the reported core length interval for the zone. Assays are uncut except where indicated. Intercepts occur within geological confines of major zones but have not been correlated to individual vein domains at this time. Reported intervals include minimum weighted averages of 3.0 g/t Au diluted over core lengths of at least 2.0 metres. 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 defined by Osisko, as disclosed in the news release dated February 17, 2021 and supported by the technical report entitled “Mineral Resource Estimate Update for the Windfall Project, Eeyou Istchee James Bay, Québec, Canada” dated March 8, 2021 (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

OSISKO WINDFALL EXPLORATION RAMP REACHES 500 METRES VERTICAL DEPTH

Posted on March 25, 2021November 8, 2023 by lboivin

Impressive Visible Gold Mineralization Encountered in Lynx Level 230

(Toronto, March 25, 2021) Osisko Mining Inc. (OSK:TSX. “Osisko” or the “Corporation”) is pleased to provide an update on the progress of the underground exploration ramp at its 100% owned Windfall gold project located in the Abitibi greenstone belt, Urban Township, Eeyou Istchee James Bay, Québec.

The exploration ramp at Windfall has achieved 500 metres vertical depth from surface. A total of 7,300 metres of advance including 16 Lynx Zone sub-level accesses spaced 20 metres vertically have been excavated by Osisko to date. An additional 1,200 metres of ramp was developed by previous operators.

The exploration ramp is 5.2 metres wide x 5.5 metres high with a 15% decline angle and has allowed the Corporation to collect two bulk samples of approximately 5,000 tonnes each (please see Osisko news releases dated June 11, 2019 and December 11, 2019). To date, 42 underground drill stations have been created and used to aid in resource delineation. Infrastructure installed along the advance includes 13.8 kV electric cables, fiber optic cables, four refuge stations, nine electrical substations, and three dewatering substations. Ramp development is being conducted by Miyuukaa Corporation (“Miyuukaa”)/CMAC-Thyssen Mining Group. Miyuukaa CEO and President, John Kitchen commented: “The Windfall project is an excellent opportunity for community members from the Cree First Nation of Waswanipi and the other Cree communities of Eeyou Istchee to participate in learning valuable skills in the mining sector. In addition to underground exploration ramp advancement and drilling, our joint ventures in civil works and camp operations are key to providing over 100 First Nation workers at the Windfall site.”

In addition, a 240 metre ventilation raise from surface is scheduled to be completed by Technica Mining in early April 2021. This six metre diameter raise includes a manway and provides additional ventilation to the Lynx Zone.

Work is advancing towards the Triple Lynx Zone for the collection of the third and final planned bulk sample at Windfall, with the expectation of reaching this mineralized zone at 600 metres vertical depth by December 2021. Osisko also recently received permission from the Quebec Ministry of Energy and Natural Resources to conduct a test stope in Lynx, which will further help in grade determinations and provide valuable information for the feasibility study. Impressive visible gold mineralization was recently encountered from the location of the Lynx test stope (wireframe 3304 on the 230 level) (please see photos at https://www.facebook.com/MiningOsisko/).

Advanced exploration and infill drilling is being conducted from the exploration ramp, with nine underground diamond drills currently using multiple drilling bays to complete the Windfall drill program.

Osisko Chief Executive Officer John Burzynski commented: “The underground exploration ramp at Windfall has advanced in step with the drill program over the past three years, to the point where we now have excellent access to the Lynx gold zones. This has helped tremendously in confirming our confidence in our geological modelling and resource wireframe work. Spectacular visual gold mineralization is being seen in the underground mineralized zones that reflects and confirms the high-grade intercepts reported in our ongoing infill drill program. Most importantly we have done this safely, having gone 1,113 days without a lost time incident underground.”

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 INFILL DRILLING RETURNS HIGH GRADE AT LYNX

Posted on March 23, 2021November 8, 2023 by lboivin

696 g/t Au Over 2.5 Metres in Triple Lynx

507 g/t Au Over 2.1 Metres in Lynx Main

(Toronto, March 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 99 intercepts in 50 drill holes (8 from surface, 22 from underground) and 20 wedges. The intercepts are located inside defined February 2021 mineral resource estimate (“MRE”) blocks (see Osisko news release dated February 17, 2021).

Drilling is currently focused on the Lynx deposit. Osisko Chief Executive Officer John Burzynski commented: “Today’s infill results in Lynx and Triple Lynx continue to deliver outstanding numbers as demonstrated with our two headline holes, each of which has a subinterval over 1 kilogram of gold per tonne. The infill program continues to confirm the superb high-grade areas found within the Lynx zones.”

Selected high-grade intercepts include: 696 g/t Au over 2.5 metres in WST-20-0613; 507 g/t Au over 2.1 metres in WST-20-0632; 133 g/t Au over 3.7 metres in WST-21-0622; 70.0 g/t Au over 6.0 metres in OSK-W-20-2375-W2; 148 g/t Au over 2.0 metres in OSK-W-20-2283-W5; 71.2 g/t Au over 4.1 metres in OSK-W-21-2369-W2; 120 g/t Au over 2.3 metres in WST-21-0648B, and 56.4 g/t Au over 4.0 metres in WST-21-0656. Maps showing hole locations and full analytical results are available at www.osiskomining.com

Infill Drilling

Hole Number	From (m)	To (m)	Interval (m)	Au (g/t) uncut	Au (g/t) cut to 100 g/t	Zone	Corridor
OSK-W-20-2252-W11	926.4	929.2	2.8	5.83		TLX_3163	Triple Lynx
OSK-W-20-2256-W8	932.0	944.4	12.4	8.56		TLX_3183	Triple Lynx
including	935.8	937.0	1.2	22.2		TLX_3183	Triple Lynx
	947.7	954.0	6.3	5.56		TLX_3163	Triple Lynx
including	948.4	949.4	1.0	12.0
and	953.4	954.0	0.6	13.1
OSK-W-20-2271-W4	757.7	759.7	2.0	5.90		LXM_3304	Lynx
including	759.2	759.7	0.5	23.5		LXM_3304	Lynx
OSK-W-20-2280-W6	994.1	997.5	3.4	15.7		TLX_3183	Triple Lynx
including	994.1	994.9	0.8	41.5		TLX_3183	Triple Lynx
	1021.9	1024.4	2.5	5.30		TLX_3164	Triple Lynx
including	1022.7	1023.3	0.6	12.3		TLX_3164	Triple Lynx
	1085.6	1087.8	2.2	42.3	35.0	TLX_3170	Triple Lynx
including	1085.6	1086.2	0.3	154	100	TLX_3170	Triple Lynx
OSK-W-20-2280-W7	999.0	1001.0	2.0	78.4	39.1	TLX_3163	Triple Lynx
including	999.0	999.6	0.6	231	100	TLX_3163	Triple Lynx
OSK-W-20-2280-W9	1045.0	1047.0	2.0	9.03		TLX_3163	Triple Lynx
	1100.0	1102.0	2.0	16.3		TLX_3170	Triple Lynx
including	1100.7	1101.0	0.3	66.7		TLX_3170	Triple Lynx
OSK-W-20-2280-W10	982.0	986.3	4.3	9.60		TLX_3180	Triple Lynx
including	983.3	983.6	0.3	67.4
and	986.0	986.3	0.3	39.4
	1010.0	1012.0	2.0	8.40		Triple Lynx	Triple Lynx
including	1011.3	1012.0	0.7	22.4		Triple Lynx	Triple Lynx
	1014.0	1016.0	2.0	5.34		Triple Lynx	Triple Lynx
	1023.4	1026.8	3.4	7.49		TLX_3183	Triple Lynx
including	1023.4	1024.0	0.6	19.6		TLX_3183	Triple Lynx
	1046.4	1048.4	2.0	3.59		TLX_3163	Triple Lynx
including	1047.6	1048.4	0.8	8.18		TLX_3163	Triple Lynx
	1069.4	1071.4	2.0	5.56		TLX_3164	Triple Lynx
	1101.0	1105.0	4.0	10.3		TLX_3170	Triple Lynx
including	1104.0	1105.0	1.0	33.3		TLX_3170	Triple Lynx
OSK-W-20-2283-W3	811.0	813.3	2.3	9.66		TLX_3184	Triple Lynx
including	811.7	812.0	0.3	67.4		TLX_3184	Triple Lynx
OSK-W-20-2283-W5	990.0	992.0	2.0	148	35.8	TLX_3194	Triple Lynx
including	990.0	990.7	0.7	421	100	TLX_3194	Triple Lynx
OSK-W-20-2283-W6	969.0	971.0	2.0	6.38		TLX_3193	Triple Lynx
including	970.2	970.6	0.4	31.1		TLX_3193	Triple Lynx
OSK-W-20-2283-W8	810.4	816.0	5.6	7.64		TLX_3171	Triple Lynx
including	810.4	811.0	0.6	25.8
and	814.4	814.7	0.3	25.5
	833.0	835.0	2.0	4.18		TLX_3184	Triple Lynx
	864.8	867.0	2.2	30.4		TLX_3161	Triple Lynx
including	865.4	866.0	0.6	96.8		TLX_3161	Triple Lynx
	889.9	892.0	2.1	3.84		TLX_3169	Triple Lynx
including	890.2	890.5	0.3	23.2		TLX_3169	Triple Lynx
	895.0	897.0	2.0	6.94		TLX_3175	Triple Lynx
including	895.0	895.5	0.5	25.5		TLX_3175	Triple Lynx
	1122.9	1125.5	2.6	3.55		TLX_3176	Triple Lynx
including	1122.9	1123.2	0.3	15.8		TLX_3176	Triple Lynx
OSK-W-20-2313-W8	839.0	841.0	2.0	3.69		TLX_3184	Triple Lynx
including	839.5	839.8	0.3	17.3		TLX_3184	Triple Lynx
OSK-W-20-2313-W9	815.0	817.1	2.1	3.27		TLX_3171	Triple Lynx
	844.0	846.4	2.4	32.5	19.5	TLX_3184	Triple Lynx
including	846.1	846.4	0.3	204	100	TLX_3184	Triple Lynx
	948.0	950.5	2.5	3.77		TLX_3194	Triple Lynx
	1006.5	1008.6	2.1	7.12		TLX_3195	Triple Lynx
including	1007.2	1007.6	0.4	23.4		TLX_3195	Triple Lynx
OSK-W-20-2322-W3	1160.0	1162.0	2.0	16.4		LX4_3430	Lynx 4
including	1160.4	1161.1	0.7	35.5		LX4_3430	Lynx 4
OSK-W-20-2346	958.4	960.5	2.1	7.26		Lynx 4	Lynx
including	958.9	959.4	0.5	29.2		Lynx 4	Lynx
	1013.2	1015.5	2.3	8.49		LX4_3429	Lynx 4
including	1014.0	1014.7	0.7	27.5		LX4_3429	Lynx 4
OSK-W-20-2363	794.3	796.3	2.0	8.59		Triple Lynx	Triple Lynx
including	795.1	795.6	0.5	34.2		Triple Lynx	Triple Lynx
	946.5	948.9	2.4	22.3		TLX_3195	Triple Lynx
OSK-W-20-2369-W1	654.0	657.0	3.0	31.1		LXM_3304	Lynx
including	655.0	655.9	0.9	52.1		LXM_3304	Lynx
	993.1	995.2	2.1	8.73		LX4_3430	Lynx 4
	1012.5	1015.0	2.5	22.3		Lynx 4	Lynx
including	1012.5	1013.0	0.5	97.9		Lynx 4	Lynx
OSK-W-20-2375	931.8	934.1	2.3	4.03		LX4_3437	Lynx 4
including	931.8	932.2	0.4	18.9		LX4_3437	Lynx 4
OSK-W-20-2375-W2	909.0	911.0	2.0	3.58		LX4_3414	Lynx 4
	926.8	932.8	6.0	70.0	14.4	LX4_3437	Lynx 4
including	926.8	927.4	0.6	656	100	LX4_3437	Lynx 4
OSK-W-20-2375-W4	904.0	906.3	2.3	3.53		Lynx 4	Lynx
including	905.6	905.9	0.3	19.7		Lynx 4	Lynx
	910.0	912.0	2.0	20.0		Lynx 4	Lynx
including	911.5	912.0	0.5	76.5		Lynx 4	Lynx
OSK-W-20-2381	1182.5	1185.0	2.5	12.5		LX4_3449	Lynx 4
including	1184.2	1185.0	0.8	32.0		LX4_3449	Lynx 4
OSK-W-20-2384	1125.8	1127.9	2.1	15.7		LX4_3451	Lynx 4
including	1127.5	1127.9	0.4	81.1		LX4_3451	Lynx 4
OSK-W-20-2385	785.0	787.0	2.0	45.5	26.0	LX4_3426	Lynx 4
including	786.0	786.5	0.5	178	100	LX4_3426	Lynx 4
OSK-W-20-2385-W1	819.3	821.4	2.1	39.2	19.6	LX4_3414	Lynx 4
including	819.6	820.0	0.4	203	100	LX4_3414	Lynx 4
OSK-W-20-2385-W2	799.0	801.5	2.5	39.4	25.1	LX4_3424	Lynx 4
including	799.5	799.9	0.4	190	100	LX4_3424	Lynx 4
OSK-W-20-2416	866.7	868.9	2.2	11.1		Triple Lynx	Triple Lynx
	911.0	913.0	2.0	3.66		TLX_3161	Triple Lynx
	923.0	925.1	2.1	9.86		TLX_3161	Triple Lynx
including	923.3	923.8	0.5	38.9		TLX_3161	Triple Lynx
	960.0	962.0	2.0	6.21		TLX_3163	Triple Lynx
	1001.2	1004.0	2.8	6.38		TLX_3162	Triple Lynx
including	1002.0	1003.0	1.0	15.9		TLX_3162	Triple Lynx
	1076.4	1079.0	2.6	4.90		Triple Lynx	Triple Lynx
including	1077.2	1077.5	0.3	19.5		Triple Lynx	Triple Lynx
OSK-W-20-2431	587.9	590.0	2.1	76.3	51.7	TLX_3171	Triple Lynx
including	588.2	588.6	0.4	229	100	TLX_3171	Triple Lynx
OSK-W-21-2369-W2	675.0	679.1	4.1	71.2	40.8	LXM_3304	Lynx
including	675.7	677.0	1.3	196	100	LXM_3304	Lynx
WST-20-0522	297.0	300.0	3.0	4.42		LXSW_3556	Lynx
	305.4	307.5	2.1	24.4	19.9	LXSW_3556	Lynx
including	306.0	306.3	0.3	132	100	LXSW_3556	Lynx
	312.7	315.0	2.3	3.70		LXSW_3556	Lynx
including	312.7	313.3	0.6	9.20		LXSW_3556	Lynx
WST-20-0543	52.0	54.0	2.0	10.3		LXM_3303	Lynx
including	52.0	52.3	0.3	52.4		LXM_3303	Lynx
	58.0	60.4	2.4	6.48		LXM_3303	Lynx
including	58.0	58.7	0.7	20.4		LXM_3303	Lynx
WST-20-0554	295.2	297.2	2.0	7.69		TLX_3131	Triple Lynx
	353.9	356.0	2.1	12.2		TLX_3166	Triple Lynx
including	354.4	354.9	0.5	41.2		TLX_3166	Triple Lynx
	490.8	495.1	4.3	19.4		LX4_3450	Lynx 4
including	490.8	492.0	1.2	49.0		LX4_3450	Lynx 4
WST-20-0574	342.0	344.0	2.0	30.2		LXSW_3556	Lynx
including	343.0	343.7	0.7	85.4		LXSW_3556	Lynx
	365.0	367.3	2.3	3.15		LXSW_3556	Lynx
including	366.5	366.9	0.4	14.7		LXSW_3556	Lynx
WST-20-0591	144.0	146.2	2.2	23.7		LXM_3338	Lynx
including	145.5	146.2	0.7	43.2		LXM_3338	Lynx
	167.1	169.3	2.2	4.98		LXM_3304	Lynx
WST-20-0592	137.5	139.5	2.0	4.67		LXM_3338	Lynx
including	137.5	138.0	0.5	17.2		LXM_3338	Lynx
WST-20-0603	297.0	299.0	2.0	4.71		TLX_3166	Triple Lynx
including	298.1	298.5	0.4	22.8		TLX_3166	Triple Lynx
	476.0	478.0	2.0	7.78		Lynx SW	Lynx SW
including	476.8	477.6	0.8	19.1		Lynx SW	Lynx SW
WST-20-0608	704.0	706.1	2.1	6.11		LX4_3438	Lynx 4
including	704.0	704.9	0.9	13.7		LX4_3438	Lynx 4
WST-20-0612	247.1	252.6	5.5	6.36		TLX_3161	Triple Lynx
including	250.8	251.1	0.3	20.2		TLX_3161	Triple Lynx
	295.5	297.6	2.1	9.18		TLX_3163	Triple Lynx
	311.0	313.2	2.2	19.1		TLX_3164	Triple Lynx
including	311.6	312.2	0.6	66.5		TLX_3164	Triple Lynx
WST-20-0613	237.8	240.3	2.5	696	43.4	TLX_3161	Triple Lynx
including	238.4	239.0	0.6	2820	100	TLX_3161	Triple Lynx
	284.0	286.0	2.0	4.18		TLX_3163	Triple Lynx
	345.0	347.1	2.1	3.56		TLX_3182	Triple Lynx
	357.8	360.5	2.7	3.94		TLX_3182	Triple Lynx
	399.0	401.3	2.3	49.1	44.4	TLX_3188	Triple Lynx
including	400.0	400.5	0.5	122	100	TLX_3188	Triple Lynx
WST-20-0615	278.8	280.8	2.0	26.2	15.9	TLX_3166	Triple Lynx
including	279.5	279.8	0.3	169	100	TLX_3166	Triple Lynx
WST-20-0618	221.5	223.6	2.1	73.5	49.5	TLX_3161	Triple Lynx
including	221.9	222.9	1.0	151	100	TLX_3161	Triple Lynx
WST-20-0624	118.0	120.0	2.0	9.10		LXM_3303	Lynx
including	118.0	118.8	0.8	21.9		LXM_3303	Lynx
WST-20-0629	102.0	104.0	2.0	7.39		LXM_3334	Lynx
including	102.5	103.1	0.6	24.5		LXM_3334	Lynx
WST-20-0630	96.0	98.0	2.0	3.85		LXM_3334	Lynx
including	96.0	96.5	0.5	14.2		LXM_3334	Lynx
	129.6	134.2	4.6	5.18		LXM_3304	Lynx
including	129.6	130.0	0.4	26.7		LXM_3304	Lynx
WST-20-0631	128.0	130.0	2.0	25.8		LXM_3304	Lynx
including	128.0	128.7	0.7	73.5		LXM_3304	Lynx
	144.5	146.5	2.0	4.51		LXM_3359	Lynx
including	144.5	145.1	0.6	14.6		LXM_3359	Lynx
WST-20-0632	123.8	125.9	2.1	507	36.0	LXM_3334	Lynx
including	124.9	125.5	0.6	1750	100	LXM_3334	Lynx
WST-20-0633	152.8	155.1	2.3	12.2		Lynx	Lynx
including	152.8	153.3	0.5	26.1		Lynx	Lynx
WST-21-0614	233.1	236.8	3.7	39.5	29.6	TLX_3161	Triple Lynx
including	235.4	235.9	0.5	173	100	TLX_3161	Triple Lynx
	277.9	280.2	2.3	13.7		TLX_3163	Triple Lynx
including	278.8	279.2	0.4	65.6		TLX_3163	Triple Lynx
WST-21-0622	232.7	236.4	3.7	133	74.3	TLX_3161	Triple Lynx
WST-21-0648B	313.5	315.8	2.3	120	43.7	TLX_3166	Triple Lynx
including	314.8	315.8	1.0	276	100	TLX_3166	Triple Lynx
WST-21-0656	233.0	237.0	4.0	56.4	32.2	TLX_3161	Triple Lynx
including	234.5	235.1	0.6	261	100	TLX_3161	Triple Lynx
	274.0	276.0	2.0	5.97		TLX_3164	Triple Lynx
	279.0	281.0	2.0	14.5		TLX_3164	Triple Lynx
including	279.6	280.2	0.6	46.4		TLX_3164	Triple Lynx
	284.0	286.2	2.2	3.16		TLX_3164	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, TLX = Triple Lynx and LXSW = Lynx Southwest.

Drill hole location

Hole Number	Azimuth (°)	Dip (°)	Length (m)	UTM E	UTM N	Elevation	Section
OSK-W-20-2252-W11	129	-54	1191	453241	5435694	415	3750
OSK-W-20-2256-W8	125	-51	1056	453160	5435686	411	3675
OSK-W-20-2271-W4	120	-53	1134	453462	5435682	410	3950
OSK-W-20-2280-W6	127	-58	1152	453304	5435639	415	3775
OSK-W-20-2280-W7	127	-58	1131	453304	5435639	415	3775
OSK-W-20-2280-W9	127	-58	1176	453304	5435639	415	3775
OSK-W-20-2280-W10	127	-58	1182	453304	5435639	415	3775
OSK-W-20-2283-W3	135	-50	1004	452997	5435607	425	3500
OSK-W-20-2283-W5	135	-50	1043	452997	5435607	425	3500
OSK-W-20-2283-W6	135	-50	1013	452997	5435607	425	3500
OSK-W-20-2283-W8	135	-50	1236	452997	5435607	425	3500
OSK-W-20-2313-W8	134	-52	1152	452965	5435583	420	3450
OSK-W-20-2313-W9	134	-52	1218	452965	5435583	420	3450
OSK-W-20-2322-W3	130	-54	1274	453608	5435715	403	4075
OSK-W-20-2346	130	-53	1161	453397	5435557	413	3825
OSK-W-20-2363	139	-52	1031	452930	5435548	419	3425
OSK-W-20-2369-W1	130	-56	1193	453424	5435566	410	3850
OSK-W-20-2375	122	-56	1160	453810	5435779	400	4300
OSK-W-20-2375-W2	122	-56	987	453810	5435779	400	4300
OSK-W-20-2375-W4	122	-56	1008	453810	5435779	400	4300
OSK-W-20-2381	134	-53	1230	453620	5435791	402	4125
OSK-W-20-2384	127	-52	1248	453397	5435557	413	3825
OSK-W-20-2385	125	-54	873	453687	5435679	401	4150
OSK-W-20-2385-W1	125	-54	937	453687	5435679	401	4150
OSK-W-20-2385-W2	125	-54	918	453687	5435679	401	4150
OSK-W-20-2416	123	-54	1128	453169	5435624	412	3650
OSK-W-20-2431	136	-57	849	453008	5435388	412	3400
OSK-W-21-2369-W2	130	-56	788	453424	5435566	410	3850
WST-20-0522	177	-52	457	453104	5435064	231	3325
WST-20-0543	150	-41	144	453315	5435165	124	3575
WST-20-0554	148	-44	562	453257	5435209	96	3525
WST-20-0574	139	-63	523	452955	5435003	253	3175
WST-20-0591	136	-35	220	453257	5435209	96	3525
WST-20-0592	137	-26	205	453257	5435209	96	3525
WST-20-0603	161	-59	525	453227	5435125	134	3475
WST-20-0608	152	-44	760	453418	5435305	69	3725
WST-20-0612	128	-62	432	453357	5435273	16	3650
WST-20-0613	123	-55	442	453358	5435273	16	3650
WST-20-0615	177	-58	519	453227	5435125	134	3475
WST-20-0618	181	-63	264	453506	5435327	-7	3800
WST-20-0624	165	-12	148	453256	5435209	96	3525
WST-20-0629	146	-21	175	453321	5435235	55	3600
WST-20-0630	142	-13	166	453321	5435235	55	3600
WST-20-0631	136	-3	166	453322	5435235	55	3600
WST-20-0632	160	-41	172	453321	5435235	55	3600
WST-20-0633	161	-32	171	453321	5435235	55	3600
WST-21-0614	131	-59	427	453357	5435273	16	3650
WST-21-0622	193	-59	270	453506	5435326	-7	3800
WST-21-0648B	166	-59	345	453228	5435126	135	3475
WST-21-0656	139	-61	322	453357	5435272	16	3650

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

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 EXPANSION DRILLING ADDS NEW HIGH GRADE AT LYNX

Posted on March 17, 2021November 8, 2023 by lboivin

177 g/t Au Over 3.0 Metres

(Toronto, March 17, 2021) Osisko Mining Inc. (OSK:TSX. “Osisko” or the “Corporation”) is pleased to provide new analytical results from the ongoing drill program at its 100% owned Windfall gold project located in the Abitibi greenstone belt, Urban Township, Eeyou Istchee James Bay, Québec.

Drilling is currently focused on the Lynx deposit. Significant new analytical results presented below include 66 intercepts in 22 drill holes (5 from surface, 17 from underground) and 21 wedges. The intercepts are located outside the February 2021 mineral resource estimate (“MRE”) (see Osisko news release dated February 17, 2021) and either expand resource wireframes or are located in a defined zone or corridor but do not yet correlate to a specific wireframe.

Osisko Chief Executive Officer John Burzynski commented: “Today’s expansion results in Lynx and Triple Lynx continue to confirm the growth potential of these zones. The higher-grade intercept in OSK-W-20-2381-W1 extends Lynx 90 metres from the nearest MRE block and WST-20-0602 extends Triple Lynx 100 metres from the nearest MRE block”.

Selected high-grade intercepts include: 177 g/t Au over 3.0 metres and 66.6 g/t Au over 2.0 metres in OSK-W-20-2381-W1; 43.4 g/t Au over 5.3 metres in WST-20-0602; 56.4 g/t Au over 3.2 metres in WST-20-0603; 52.1 g/t Au over 3.4 metres in WST-20-0611; 70.2 g/t Au over 2.2 metres in OSK-W-20-2313-W7; 57.2 g/t Au over 2.1 metres in OSK-W-20-2391; and 25.1 g/t Au over 4.8 metres in OSK-W-20-2252-W8. Maps showing hole locations and full analytical results are available at www.osiskomining.com

Expansion Drilling

Hole No.	From (m)	To (m)	Interval (m)	Au (g/t) uncut	Au (g/t) cut to 100 g/t	Zone	Corridor
OSK-W-20-2170-W7	1029.6	1031.9	2.3	11.1		Triple Lynx	Triple Lynx
including	1029.6	1030.0	0.4	59.7		Triple Lynx	Triple Lynx
OSK-W-20-2252-W10	1182.6	1184.8	2.2	3.89		Triple Lynx	Triple Lynx
	1190.2	1192.4	2.2	13.8		Triple Lynx	Triple Lynx
including	1191.2	1192.1	0.9	31.3		Triple Lynx	Triple Lynx
	1204.3	1206.3	2.0	4.22		Triple Lynx	Triple Lynx
OSK-W-20-2252-W8	975.2	980.0	4.8	25.1	22.6	Triple Lynx	Triple Lynx
including	976.5	977.7	1.2	85.8	75.6	Triple Lynx	Triple Lynx
OSK-W-20-2271-W2	1133.5	1135.5	2.0	3.64		Lynx 4	Lynx
including	1134.0	1134.5	0.5	14.5		Lynx 4	Lynx
OSK-W-20-2271-W5	1064.6	1067.4	2.8	4.74		Lynx 4	Lynx
including	1064.6	1065.0	0.4	13.1		Lynx 4	Lynx
OSK-W-20-2280-W7	977.0	981.8	4.8	7.78		Triple Lynx	Triple Lynx
including	977.0	977.4	0.4	30.4		Triple Lynx	Triple Lynx
OSK-W-20-2283-W2	951.0	953.0	2.0	3.94		Triple Lynx	Triple Lynx
OSK-W-20-2287	1245.0	1247.0	2.0	3.51		Lynx 4	Lynx
OSK-W-20-2292-W1	1131.8	1134.0	2.2	3.66		Triple Lynx	Triple Lynx
including	1131.8	1132.1	0.3	23.5		Triple Lynx	Triple Lynx
OSK-W-20-2313-W7	993.0	995.2	2.2	70.2	14.4	Triple Lynx	Triple Lynx
including	994.9	995.2	0.3	509	100	Triple Lynx	Triple Lynx
OSK-W-20-2313-W9	793.0	797.5	4.5	5.65		Triple Lynx	Triple Lynx
including	796.5	797.5	1.0	13.4		Triple Lynx	Triple Lynx
OSK-W-20-2322-W1	1047.4	1049.7	2.3	3.69		Lynx 4	Lynx
including	1047.4	1048.0	0.6	13.7		Lynx 4	Lynx
OSK-W-20-2328	898.2	900.5	2.3	3.64		Lynx 4	Lynx
OSK-W-20-2363	578.0	582.0	4.0	6.19		Triple Lynx	Triple Lynx
including	581.3	582.0	0.7	24.4		Triple Lynx	Triple Lynx
OSK-W-20-2363-W1	662.0	664.1	2.1	4.43		Triple Lynx	Triple Lynx
OSK-W-20-2363-W2	751.0	753.5	2.5	5.90		Triple Lynx	Triple Lynx
including	753.0	753.5	0.5	12.0		Triple Lynx	Triple Lynx
	867.6	870.0	2.4	5.18		Triple Lynx	Triple Lynx
including	867.6	868.0	0.4	27.7		Triple Lynx	Triple Lynx
	887.0	889.0	2.0	3.75		Triple Lynx	Triple Lynx
OSK-W-20-2363-W3	999.1	1001.6	2.5	4.52		Triple Lynx	Triple Lynx
OSK-W-20-2371-W1	654.0	656.3	2.3	17.9		Triple Lynx	Triple Lynx
including	655.2	655.8	0.6	60.8		Triple Lynx	Triple Lynx
	717.0	719.0	2.0	5.97		Triple Lynx	Triple Lynx
	937.0	939.0	2.0	3.68		Triple Lynx	Triple Lynx
including	938.1	938.4	0.3	20.4		Triple Lynx	Triple Lynx
	977.5	980.9	3.4	10.8		Triple Lynx	Triple Lynx
including	977.5	977.8	0.3	70.1		Triple Lynx	Triple Lynx
OSK-W-20-2371-W2	815.0	817.0	2.0	3.60		Triple Lynx	Triple Lynx
	1047.0	1049.0	2.0	4.04		Lynx 4	Lynx
including	1047.4	1048.1	0.7	11.4		Lynx 4	Lynx
OSK-W-20-2375-W3	918.0	920.0	2.0	3.86		Lynx 4	Lynx
OSK-W-20-2381-W1	1332.0	1335.0	3.0	177	38.2	Lynx 4	Lynx
including	1332.0	1333.0	1.0	515	100	Lynx 4	Lynx
	1364.5	1366.5	2.0	66.6	26.6	Lynx 4	Lynx
including	1366.1	1366.5	0.4	300	100	Lynx 4	Lynx
OSK-W-20-2391	1183.3	1185.4	2.1	57.2	26.2	Triple Lynx	Triple Lynx
including	1185.1	1185.4	0.3	317	100	Triple Lynx	Triple Lynx
	1283.0	1285.1	2.1	9.73		Triple Lynx	Triple Lynx
including	1283.7	1284.0	0.3	58.1		Triple Lynx	Triple Lynx
OSK-W-20-2391-W2	1380.0	1382.0	2.0	10.7		Triple Lynx	Triple Lynx
including	1380.9	1381.2	0.3	65.3		Triple Lynx	Triple Lynx
	1390.3	1394.7	4.4	21.2		Triple Lynx	Triple Lynx
including	1392.8	1393.1	0.3	65.3
and	1393.9	1394.7	0.8	58.0
OSK-W-20-2394-W1	889.0	891.0	2.0	5.04		Triple Lynx	Triple Lynx
OSK-W-20-2394-W3	1012.6	1015.0	2.4	33.5		Triple Lynx	Triple Lynx
including	1013.2	1014.0	0.8	99.9		Triple Lynx	Triple Lynx
OSK-W-21-2445	445.0	447.0	2.0	10.3		Triple Lynx	Triple Lynx
including	446.7	447.0	0.3	61.6		Triple Lynx	Triple Lynx
WST-20-0522	243.0	245.1	2.1	3.79		Lynx SW	Lynx SW
WST-20-0523A	297.0	299.0	2.0	3.83		Lynx SW	Lynx SW
WST-20-0524	238.7	241.0	2.3	3.60		Lynx SW	Lynx SW
including	239.6	240.0	0.4	16.9		Lynx SW	Lynx SW
WST-20-0548A	271.4	273.6	2.2	3.60		Triple Lynx	Triple Lynx
including	272.1	272.8	0.7	10.9		Triple Lynx	Triple Lynx
WST-20-0554	357.4	359.4	2.0	6.43		Triple Lynx	Triple Lynx
	424.0	426.2	2.2	3.77		Triple Lynx	Triple Lynx
WST-20-0569	412.0	414.0	2.0	4.31		Lynx SW	Lynx
including	412.4	412.7	0.3	27.6		Lynx SW	Lynx
WST-20-0570	323.0	325.0	2.0	3.85		Lynx SW	Lynx SW
WST-20-0574	302.9	305.7	2.8	9.11		Lynx SW	Lynx SW
	308.0	310.0	2.0	4.07		Lynx SW	Lynx SW
	394.5	396.9	2.4	5.64		Lynx SW	Lynx SW
	416.0	418.7	2.7	9.20		Lynx SW	Lynx SW
including	418.4	418.7	0.3	78.9		Lynx SW	Lynx SW
	510.8	513.0	2.2	4.58		Lynx SW	Lynx SW
including	511.7	512.2	0.5	20.0		Lynx SW	Lynx SW
WST-20-0575	159.0	161.0	2.0	3.54		Triple Lynx	Triple Lynx
WST-20-0602	397.1	400.4	3.3	9.53		Lynx SW	Lynx SW
including	397.6	398.0	0.4	28.7		Lynx SW	Lynx SW
	572.0	577.3	5.3	43.4	29.9	Lynx SW	Lynx SW
including	572.0	573.0	1.0	172	100	Lynx SW	Lynx SW
WST-20-0603	250.5	253.7	3.2	56.4	34.3	Lynx SW	Lynx SW
including	252.0	252.7	0.7	201	100	Lynx SW	Lynx SW
	257.8	260.0	2.2	5.07		Lynx SW	Lynx SW
	278.0	280.0	2.0	28.0		Triple Lynx	Triple Lynx
including	278.7	279.2	0.5	95.2		Triple Lynx	Triple Lynx
WST-20-0606A	248.5	250.5	2.0	5.41		Lynx SW	Lynx SW
	273.2	275.2	2.0	15.3		Lynx SW	Lynx SW
including	273.7	274.0	0.3	37.3		Lynx SW	Lynx SW
	329.0	331.0	2.0	4.41		Lynx SW	Lynx SW
WST-20-0609	299.0	301.4	2.4	12.9		Lynx SW	Lynx SW
including	300.9	301.4	0.5	57.0		Lynx SW	Lynx SW
	326.7	329.0	2.3	4.77		Triple Lynx	Triple Lynx
including	326.7	327.4	0.7	11.1		Triple Lynx	Triple Lynx
	346.7	349.0	2.3	3.90		Lynx SW	Lynx SW
including	346.7	347.2	0.5	17.4		Lynx SW	Lynx SW
WST-20-0611	289.0	292.4	3.4	52.1	27.0	Triple Lynx	Triple Lynx
including	291.8	292.4	0.6	242	100	Triple Lynx	Triple Lynx
WST-20-0615	258.1	260.5	2.4	12.0		Lynx SW	Lynx SW
WST-20-0626	451.7	453.8	2.1	4.51		Lynx SW	Lynx SW
WST-20-0631	14.8	17.0	2.2	7.22		Lynx	Lynx
including	14.8	15.6	0.8	19.7		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-20-2170-W7	128	-59	1205	453425	5435657	413	3900
OSK-W-20-2252-W10	129	-54	1226	453241	5435694	415	3750
OSK-W-20-2252-W8	129	-54	1239	453241	5435694	415	3750
OSK-W-20-2271-W2	120	-53	1223	453462	5435682	410	3950
OSK-W-20-2271-W5	120	-53	1247	453462	5435682	410	3950
OSK-W-20-2280-W7	127	-58	1131	453304	5435639	415	3775
OSK-W-20-2283-W2	135	-50	1011	452997	5435607	425	3500
OSK-W-20-2287	116	-53	1406	453607	5435714	404	4075
OSK-W-20-2292-W1	125	-54	1149	453035	5435561	420	3525
OSK-W-20-2313-W7	134	-52	1086	452965	5435583	420	3450
OSK-W-20-2313-W9	134	-52	1218	452965	5435583	420	3450
OSK-W-20-2322-W1	130	-54	1233	453608	5435715	403	4075
OSK-W-20-2328	136	-56	942	452872	5435153	409	3175
OSK-W-20-2363	139	-52	1031	452930	5435548	419	3425
OSK-W-20-2363-W1	139	-52	1059	452930	5435548	419	3425
OSK-W-20-2363-W2	139	-52	1035	452930	5435548	419	3425
OSK-W-20-2363-W3	139	-52	1185	452930	5435548	419	3425
OSK-W-20-2371-W1	123	-53	1032	452996	5435364	412	3375
OSK-W-20-2371-W2	123	-53	1251	452996	5435364	412	3375
OSK-W-20-2375-W3	122	-56	1020	453810	5435779	400	4300
OSK-W-20-2381-W1	134	-53	1512	453620	5435791	402	4125
OSK-W-20-2391	117	-57	1629	453281	5435894	408	3900
OSK-W-20-2391-W2	117	-57	1888	453281	5435894	408	3900
OSK-W-20-2394-W1	138	-52	1065	452922	5435468	415	3375
OSK-W-20-2394-W3	138	-52	1020	452922	5435468	415	3375
OSK-W-21-2445	141	-50	945	452906	5435434	415	3325
WST-20-0522	177	-52	457	453104	5435064	231	3325
WST-20-0523A	165	-46	387	453104	5435065	231	3325
WST-20-0524	182	-44	243	453103	5435064	231	3325
WST-20-0548A	166	-60	370	453228	5435126	135	3475
WST-20-0554	148	-44	562	453257	5435209	96	3525
WST-20-0569	164	-59	526	453104	5435065	231	3325
WST-20-0570	159	-51	454	453104	5435065	231	3325
WST-20-0574	139	-63	523	452955	5435003	253	3175
WST-20-0575	280	-33	280	453413	5435309	69	3725
WST-20-0602	160	-62	651	453227	5435126	134	3475
WST-20-0603	161	-59	525	453227	5435125	134	3475
WST-20-0606A	141	-56	531	453105	5435065	231	3325
WST-20-0609	188	-56	461	453177	5435126	173	3425
WST-20-0611	118	-63	378	453358	5435273	16	3650
WST-20-0615	177	-58	519	453227	5435125	134	3475
WST-20-0626	194	-59	471	453176	5435125	173	3425
WST-20-0631	136	-3	166	453322	5435235	55	3600

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 MINING CORPORATE UPDATE

Posted on March 15, 2021November 8, 2023 by lboivin

(Toronto, March 15, 2021) Osisko Mining Inc. (OSK:TSX. “Osisko” or the “Corporation”) is pleased to announce the promotion of Ms. Alix Drapack to Chief Sustainability Officer (“CSO”). As part of the senior management team reporting to the President, the CSO will oversee the corporation’s sustainability activities including Health & Safety, Environment, Community relations and First Nation relations, agreements and partnerships.
Ms. Drapack joined Osisko Mining Inc. in 2016 and was most recently Senior Vice-President Sustainable Development. She is a professional engineer with over 28 years of experience in managing mining, environmental and transportation projects in Canada and the USA, spanning operations, consulting and corporate office settings. Alix graduated from UBC with a Bachelor of Applied Science in Mining and Mineral Process Engineering. She also holds an MBA from Arizona State University and is a member (P. Eng.) of the Professional Engineers of Ontario. From 2011 to 2014, as Director of Sustainable Development for Osisko Mining Corporation, Alix led the combined federal and provincial environmental assessment process for the Osisko Hammond Reef Project and was responsible for Aboriginal engagement, public consultation and government relations. Previously she developed and implemented the Environmental Management Program for TransLink and has had mining operations experience including working as a Mill Shift foreman for Inco Ltd.
The new appointment reflects Osisko’s values-based approach and commitment to best practice environmental, social and governance (ESG) principles as the Corporation advances the world-class Windfall deposit towards development.

.
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).

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

OSISKO EXPANSION DRILLING ADDS NEW HIGH GRADE AT WINDFALL

Posted on March 15, 2021November 8, 2023 by lboivin

58.7 g/t Au Over 4.6 Metres in Caribou

(Toronto, March 15, 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 18 drill holes (15 from surface, 3 from underground) and 11 wedges. The intercepts are located outside the February 2021 mineral resource estimate (see Osisko news release dated February 17, 2021) and either expand resource wireframes or are located 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 grow in scale across the deposit as demonstrated by today’s results in five different zones, all of which still remain open to growth.”

Selected intercepts include: 58.7 g/t Au over 4.6 metres in OSK-W-20-2421; 39.2 g/t Au over 2.5 metres in OSK-W-20-2399-W1; 36.8 g/t Au over 2.3 metres in OSK-W-20-2410-W1; 21.2 g/t Au over 3.6 metres in OSK-W-21-2467-W1; and 36.2 g/t Au over 2.0 metres in OSK-W-21-2462. Maps showing hole locations and full analytical results are available at www.osiskomining.com

Expansion Drilling

Hole No.	From (m)	To (m)	Interval (m)	Au (g/t) uncut	Au (g/t) cut to 100 g/t	Zone	Corridor
OSK-W-20-2354-W1	705.8	707.8	2.0	3.62		Caribou	Caribou
including	706.6	707.1	0.5	12.5		Caribou	Caribou
OSK-W-20-2354-W2	633.5	638.1	4.6	8.60		Caribou	Caribou
including	633.5	634.9	1.4	20.0		Caribou	Caribou
OSK-W-20-2354-W4	629.0	633.0	4.0	11.2		Caribou	Caribou
including	629.0	630.0	1.0	34.8		Caribou	Caribou
OSK-W-20-2359	673.0	675.0	2.0	4.87		Caribou	Caribou
OSK-W-20-2366	299.9	302.0	2.1	3.61		Caribou	Caribou
OSK-W-20-2377-W1	889.5	895.5	6.0	7.36		Caribou	Caribou
including	889.5	890.0	0.5	25.5		Caribou	Caribou
OSK-W-20-2387	575.5	577.5	2.0	4.70		Caribou	Caribou
including	576.1	576.6	0.5	15.2		Caribou	Caribou
OSK-W-20-2387-W1	521.0	523.0	2.0	18.8		Caribou	Caribou
including	521.8	523.0	1.2	29.7		Caribou	Caribou
OSK-W-20-2390	622.6	625.0	2.4	4.91		Caribou	Caribou
including	623.8	624.5	0.7	14.7		Caribou	Caribou
OSK-W-20-2399-W1	621.5	624.0	2.5	39.2		Caribou	Caribou
	650.0	652.4	2.4	6.67		Caribou	Caribou
including	651.0	651.4	0.4	36.5		Caribou	Caribou
OSK-W-20-2399-W2	580.0	582.4	2.4	3.83		Caribou	Caribou
including	582.1	582.4	0.3	18.5		Caribou	Caribou
	656.0	658.0	2.0	3.66		Caribou	Caribou
OSK-W-20-2400	768.0	770.2	2.2	4.20		Caribou	Caribou
OSK-W-20-2401	382.0	384.0	2.0	6.16		Caribou	Caribou
including	382.0	383.0	1.0	11.8		Caribou	Caribou
OSK-W-20-2407-W1	686.0	688.0	2.0	9.14		Underdog	Underdog
including	686.5	687.0	0.5	29.5		Underdog	Underdog
OSK-W-20-2410-W1	720.7	723.0	2.3	36.8		Caribou	Caribou
including	722.0	723.0	1.0	67.0		Caribou	Caribou
OSK-W-20-2414	837.0	839.1	2.1	3.92		Caribou	Caribou
OSK-W-20-2415-W1	453.0	455.0	2.0	24.7	20.2	Caribou	Caribou
including	453.9	454.3	0.4	123	100	Caribou	Caribou
OSK-W-20-2421	530.0	532.1	2.1	6.56		Caribou	Caribou
including	530.0	531.0	1.0	13.3		Caribou	Caribou
	534.0	538.6	4.6	58.7	40.6	Caribou	Caribou
including	536.0	537.0	1.0	123	100
and	537.0	537.4	0.4	251	100
OSK-W-20-2424	109.2	111.5	2.3	4.70		F11	F11
including	109.8	110.3	0.5	17.8		F11	F11
OSK-W-20-2433	78.0	80.0	2.0	3.60		F11	F11
including	78.8	79.3	0.5	13.9		F11	F11
	216.0	218.0	2.0	3.95		F11	F11
including	216.0	216.5	0.5	11.7		F11	F11
OSK-W-20-2439	45.3	48.0	2.7	4.05		F11	F11
OSK-W-21-2451	647.4	649.4	2.0	4.90		Caribou	Caribou
including	648.0	648.4	0.4	15.0		Caribou	Caribou
	748.0	750.5	2.5	19.1		Caribou	Caribou
OSK-W-21-2460	535.8	538.0	2.2	18.8		Caribou	Caribou
	724.6	726.7	2.1	3.95		Caribou	Caribou
OSK-W-21-2462	480.0	482.0	2.0	36.2	25.7	Caribou	Caribou
including	480.9	481.4	0.5	142	100	Caribou	Caribou
	678.0	680.4	2.4	5.78		Caribou	Caribou
OSK-W-21-2466	539.0	541.0	2.0	9.76		Caribou	Caribou
OSK-W-21-2467-W1	421.0	423.0	2.0	3.65		Caribou	Caribou
	602.0	604.0	2.0	21.9		Caribou	Caribou
including	603.0	604.0	1.0	43.6		Caribou	Caribou
	636.1	639.7	3.6	21.2		Caribou	Caribou
including	636.1	636.6	0.5	89.3		Caribou	Caribou
	687.0	689.0	2.0	14.0		Caribou	Caribou
including	687.0	688.0	1.0	25.0		Caribou	Caribou
WST-20-0519	148.0	150.0	2.0	6.76		Z27	Zone 27
WST-20-0558	98.0	100.0	2.0	4.57		Bobcat	Bobcat
including	98.4	99.1	0.7	12.8		Bobcat	Bobcat
	166.0	168.0	2.0	7.15		Bobcat	Bobcat
including	167.7	168.0	0.3	47.5		Bobcat	Bobcat
WST-20-0566A	93.9	96.3	2.4	3.57		Z27	Zone 27
including	95.0	95.6	0.6	12.0		Z27	Zone 27

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

Drill hole location

Hole Number	Azimuth (°)	Dip (°)	Length (m)	UTM E	UTM N	Elevation	Section
OSK-W-20-2354-W1	336	-60	792	452739	5434474	401	2725
OSK-W-20-2354-W2	336	-60	750	452739	5434474	401	2725
OSK-W-20-2354-W4	336	-60	783	452739	5434474	401	2725
OSK-W-20-2359	335	-61	726	452694	5434440	401	2675
OSK-W-20-2366	323	-55	534	452682	5434624	398	2750
OSK-W-20-2377-W1	132	-49	1314	452702	5435548	409	3225
OSK-W-20-2387	336	-59	717	452694	5434440	401	2675
OSK-W-20-2387-W1	336	-59	738	452694	5434440	401	2675
OSK-W-20-2390	330	-65	647	452595	5434393	401	2550
OSK-W-20-2399-W1	333	-54	876	452874	5434552	398	2875
OSK-W-20-2399-W2	333	-54	876	452874	5434552	398	2875
OSK-W-20-2400	336	-53	884	452876	5434419	402	2825
OSK-W-20-2401	330	-55	705	452688	5434637	397	2750
OSK-W-20-2407-W1	347	-55	1044	452315	5434419	399	2325
OSK-W-20-2410-W1	338	-62	750	452727	5434358	402	2650
OSK-W-20-2414	337	-54	882	452880	5434419	402	2825
OSK-W-20-2415-W1	328	-54	762	452738	5434474	401	2725
OSK-W-20-2421	332	-59	699	452632	5434280	400	2525
OSK-W-20-2424	150	-45	267	452638	5436000	403	3375
OSK-W-20-2433	148	-47	411	452558	5436073	405	3350
OSK-W-20-2439	147	-50	360	452515	5436029	406	3275
OSK-W-21-2451	330	-58	803	452809	5434415	404	2750
OSK-W-21-2460	332	-55	789	452732	5434537	399	2750
OSK-W-21-2462	338	-57	888	452874	5434552	398	2875
OSK-W-21-2466	330	-66	639	452597	5434393	401	2550
OSK-W-21-2467-W1	331	-54	708	452687	5434471	402	2675
WST-20-0519	136	-45	162	452282	5434976	262	2575
WST-20-0558	155	-32	169	452955	5435003	253	3175
WST-20-0566A	132	-16	368	452208	5434898	248	2475

Caribou Zone

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.

F-Zone

Bobcat

Underdog

Qualified Person

Quality Control and Reporting Protocols

About the Windfall Gold Deposit

About Osisko Mining Inc.

Osisko is a mineral exploration company focused on the acquisition, exploration, and development of precious metal resource properties in Canada. Osisko holds a 100% interest in the high-grade Windfall gold deposit located between Val-d’Or and Chibougamau in Québec and holds a 100% undivided interest in a large area of claims in the surrounding Urban Barry area and nearby Quévillon area (over 2,700 square kilometres).

Cautionary Note Regarding Forward-Looking Information

CONTACT INFORMATION:

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

OSISKO MINING ORDERS MILLING EQUIPMENT FOR WINDFALL

Posted on March 9, 2021November 8, 2023 by lboivin

(Toronto, March 9, 2021) Osisko Mining Inc. (OSK:TSX: “Osisko” or the “Corporation”) is pleased to announce that it has placed an order for grinding equipment and ancillaries from FLSmidth, a leading technology and equipment supply company, for its 100% owned Windfall gold project located in the Abitibi greenstone belt, Urban Township, Eeyou Istchee James Bay, Québec.

The order consists of a 7.3 meters (24 foot) diameter x 3.4 meters (11 foot) long gear-driven semi-autogenous grinding (SAG) mill and a 5.2 meters (17 foot) diameter x 9.4 meters (31 foot) long gear-driven ball mill. Current planning foresees installation and operation of the grinding mills in a SABC[1] configuration. The grinding mills have a capacity of processing up to 176.6 dry tonnes per hour, or 3,900 tonnes per day based on 92% availability. The equipment is expected to be delivered to the Windfall project in the second half of 2022. Installation will follow pending successful receipt of all permits and authorizations.

John Burzynski, Chief Executive Officer of Osisko commented: “FLSmidth is a recognized global leader in grinding technologies with a long track record of providing high quality products, and we are looking forward to be working with them on our developing Windfall project. Securing these critical long lead time components of the grinding circuit is an important first step in solidifying detailed engineering for the Windfall plant. We continue to advance all aspects of work on Windfall including our environmental assessment and consultation with our host communities and look forward to additional near-term announcements regarding our infrastructure plans.”

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 defined by Osisko, as disclosed in the news release dated February 17, 2021 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, certain of which are described in the February 17, 2021 news release, will be further described in the full technical report being prepared for this updated mineral resource estimate in accordance with NI 43-101, and will be available on SEDAR (www.sedar.com) under the Corporation’s issuer profile within 45 days from February 17, 2021. 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.

About FLSmidth

FlSmidth is the market-leading supplier of sustainable productivity to the global mining and cement industries. Headquartered in Copenhagen, Denmark, and with offices in more than 50 countries including Canada, FLSmidth delivers engineering, equipment and service solutions to customers worldwide. Productivity, sustainability, and quality are focus areas for the 12,000 employees in FLSmidth.

Cautionary Note Regarding Forward-Looking Information

CONTACT INFORMATION:

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

[1] In a SABC configuration, the SAG and ball mill are in closed circuit, with the SAG mill closed with a crusher to control the amount of ‘critical size’ material in the circuit.

OSISKO FILES TECHNICAL REPORT FOR WINDFALL MINERAL RESOURCE ESTIMATE UPDATE

Posted on March 8, 2021November 8, 2023 by lboivin

(Toronto, March 8, 2021) Osisko Mining Inc. (OSK:TSX, “Osisko” or the “Corporation”) is pleased to announce that it has filed a technical report in accordance with National Instrument 43-101 – Standards of Disclosure for Mineral Projects to update the mineral resource estimate on its 100% owned Windfall gold deposit. The technical report entitled “Mineral Resource Estimate Update for the Windfall Project, Eeyou Istchee James Bay, Québec, Canada” and dated March 8, 2021 (effective date of November 30, 2020) has been prepared for Osisko by BBA Inc. The technical report is available on SEDAR (www.sedar.com) under Osisko’s issuer profile.

About Osisko Mining Inc.

Cautionary Statements Regarding Mineral Resource Estimate

Readers are cautioned that mineral resources are not mineral reserves and that the economic viability of mineral resources that are not mineral reserves has not been demonstrated. The mineral resource estimate described in this news release may be materially affected by geology, environmental, permitting, legal, title, socio-political, marketing or other relevant issues. The mineral resource estimate is classified in accordance with the Canadian Institute of Mining, Metallurgy and Petroleum’s “CIM Definition Standards on Mineral Resources and Mineral Reserves” incorporated by reference into National Instrument 43-101 – Standards of Disclosure for Mineral Projects (“NI 43-101”). Readers are cautioned not to assume that further work on the stated mineral resources will lead to mineral reserves that can be mined economically.

CONTACT INFORMATION:

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

OSISKO WINDFALL INFILLS WITH HIGH-GRADE IN MULTIPLE ZONES 35.7 g/t Au Over 9.8 Metres in Underdog 65.6 g/t Au over 4.2 meters in Caribou

Posted on March 3, 2021November 8, 2023 by lboivin

(Toronto, March 03, 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.

Today’s infill results are from the southwestern areas of the deposit including Zone 27, Underdog, Caribou, F11, Mallard, and Bobcat. Osisko Chief Executive Officer John Burzynski commented: “Infill drilling continues to deliver impressive grade and width results from the Windfall deposit.”

The table below contains resource definition infill intercepts located inside defined February 2021 mineral resource estimate blocks (see Osisko news release dated February 17, 2021). Significant new analytical results are presented below, including 73 intercepts in 33 drill holes (24 from surface, 9 from underground) and 10 wedges.

Selected intercepts include: 35.7 g/t Au over 9.8 metres, 70.7 g/t Au over 2.0 metres, and 50.4 g/t Au over 3.6 metres in OSK-W-20-2407; 65.6 g/t Au over 4.2 metres in OSK-W-20-2390; 60.8 g/t Au over 2.0 metres in OSK-W-20-2405; 39.0 g/t Au over 3.0 metres in OSK-W-20-2400; 55.2 g/t Au over 2.0 metres in OSK-W-20-2399 and 18.9 g/t Au over 5.5 metres in OSK-W-20-2354-W2. 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-20-852-W4	725.0	727.0	2.0	6.83		Caribou_2212	Caribou
including	725.6	726.0	0.4	27.6		Caribou_2212	Caribou
OSK-W-20-913-W1	634.7	637.0	2.3	3.39		Caribou_2523	Caribou
including	634.7	635.0	0.3	18.6		Caribou_2523	Caribou
	851.0	853.3	2.3	11.1		Caribou_2219	Caribou
including	851.0	851.5	0.5	47.2		Caribou_2219	Caribou
OSK-W-20-913-W2	715.0	717.8	2.8	3.89		Caribou_2210	Caribou
	846.0	848.0	2.0	15.5		Caribou_2219	Caribou
including	846.0	846.7	0.7	44.0		Caribou_2219	Caribou
OSK-W-20-2354-W1	647.0	650.5	3.5	14.6		Caribou_2233	Caribou
	674.2	677.4	3.2	24.7		Caribou_2208	Caribou
including	677.0	677.4	0.4	77.9		Caribou_2208	Caribou
OSK-W-20-2354-W2	641.0	646.5	5.5	18.9		Caribou_2233	Caribou
including	642.8	643.1	0.3	61.9		Caribou_2233	Caribou
OSK-W-20-2354-W3	632.0	635.0	3.0	8.61		Caribou_2214	Caribou
	665.7	670.0	4.3	7.53		Caribou_2208	Caribou
including	669.0	670.0	1.0	17.1		Caribou_2208	Caribou
OSK-W-20-2354-W4	498.8	501.0	2.2	3.79		Caribou	Caribou
	649.0	651.0	2.0	6.43		Caribou_2233	Caribou
	673.0	676.0	3.0	16.7		Caribou_2208	Caribou
	708.0	711.0	3.0	4.97		Caribou_2220	Caribou
OSK-W-20-2359	360.8	363.0	2.2	5.96		Caribou	Caribou
OSK-W-20-2359-W1	361.0	363.0	2.0	6.17		Caribou	Caribou
	662.0	664.9	2.9	4.88		Caribou_2206	Caribou
OSK-W-20-2366	459.0	461.0	2.0	4.90		Caribou_2210	Caribou
including	460.0	461.0	1.0	9.13		Caribou_2210	Caribou
OSK-W-20-2373	600.0	602.0	2.0	3.14		Caribou_2241	Caribou
including	600.6	601.4	0.8	7.07		Caribou_2241	Caribou
OSK-W-20-2376	320.3	322.3	2.0	3.56		Caribou_2116	Caribou
	432.6	436.0	3.4	5.32		Caribou_2235	Caribou
including	435.0	436.0	1.0	13.3		Caribou_2235	Caribou
OSK-W-20-2377	741.0	743.2	2.2	3.22		Caribou_2553	Caribou
OSK-W-20-2387	661.2	663.2	2.0	8.69		Caribou_2233	Caribou
OSK-W-20-2388	537.0	539.7	2.7	4.76		Caribou_2215	Caribou
	610.7	614.2	3.5	13.8		Caribou_2217	Caribou
including	610.7	611.0	0.3	87.5		Caribou_2217	Caribou
	639.3	641.8	2.5	4.14		Caribou_2218	Caribou
including	640.4	641.1	0.7	11.0		Caribou_2218	Caribou
	645.4	647.5	2.1	3.87		Caribou_2218	Caribou
including	646.0	646.5	0.5	16.1		Caribou_2218	Caribou
OSK-W-20-2390	594.8	599.0	4.2	65.6	51.2	Caribou_2241	Caribou
including	596.9	597.2	0.3	147	100
and	597.5	598.1	0.6	178	100
OSK-W-20-2399	673.0	675.0	2.0	55.2	20.2	Caribou_2212	Caribou
including	674.0	674.4	0.4	275	100	Caribou_2212	Caribou
OSK-W-20-2400	750.0	753.0	3.0	39.0	36	Caribou_2215	Caribou
including	752.0	753.0	1.0	109	100	Caribou_2215	Caribou
	797.0	802.0	5.0	6.32		Caribou_2220	Caribou
including	798.0	799.0	1.0	16.4		Caribou_2220	Caribou
	858.0	861.7	3.7	6.19		Caribou_2219	Caribou
including	860.0	861.3	1.3	12.6		Caribou_2219	Caribou
OSK-W-20-2405	262.0	264.0	2.0	60.8	42.4	Caribou_2106	Caribou
including	262.7	263.5	0.8	146	100	Caribou_2106	Caribou
	622.0	624.0	2.0	4.35		Caribou_2214	Caribou
including	622.0	622.6	0.6	11.2		Caribou_2214	Caribou
	626.5	630.0	3.5	16.8		Caribou_2214	Caribou
including	627.5	628.0	0.5	56.0		Caribou_2214	Caribou
OSK-W-20-2405-W1	655.9	657.9	2.0	16.6		Caribou_2233	Caribou
including	656.5	657.0	0.5	44.4		Caribou_2233	Caribou
OSK-W-20-2407	662.0	665.6	3.6	50.4	46.6	Underdog_4101	Underdog
including	663.6	664.4	0.8	184	100	Underdog_4101	Underdog
	681.0	683.0	2.0	3.77		Underdog_4100	Underdog
	690.0	699.8	9.8	35.7		Underdog_4100	Underdog
including	690.0	691.0	1.0	85.0
and	695.0	696.0	1.0	76.4
	705.0	707.0	2.0	70.7	21.9	Underdog_4102	Underdog
including	706.3	706.7	0.4	344	100	Underdog_4102	Underdog
OSK-W-20-2410	686.4	688.4	2.0	6.69		Caribou_2214	Caribou
OSK-W-20-2414	628.0	630.0	2.0	12.0		Caribou_2524	Caribou
including	629.0	630.0	1.0	23.7		Caribou_2524	Caribou
OSK-W-20-2415	608.8	611.0	2.2	9.96		Caribou_2211	Caribou
including	608.8	609.2	0.4	45.9		Caribou_2211	Caribou
	703.4	707.4	4.0	17.4		Caribou_2220	Caribou
including	703.4	703.7	0.3	78.4		Caribou_2220	Caribou
OSK-W-20-2415-W1	638.3	643.2	4.9	12.0		Caribou_2233	Caribou
including	638.3	639.3	1.0	32.5		Caribou_2233	Caribou
OSK-W-20-2425	621.0	624.1	3.1	19.3	14.2	Caribou_2220	Caribou
including	623.8	624.1	0.3	152	100	Caribou_2220	Caribou
	709.4	711.4	2.0	3.91		Caribou_2219	Caribou
including	710.0	710.6	0.6	11.5		Caribou_2219	Caribou
OSK-W-20-2432	749.6	751.7	2.1	11.0		Caribou_2208	Caribou
including	750.2	750.9	0.7	28.9		Caribou_2208	Caribou
OSK-W-20-2437	608.4	610.4	2.0	6.62		Caribou_2214	Caribou
including	608.4	609.1	0.7	17.6		Caribou_2214	Caribou
OSK-W-20-2438	600.0	603.9	3.9	10.4		Caribou_2211	Caribou
including	600.0	601.0	1.0	18.6		Caribou_2211	Caribou
OSK-W-20-2440	690.0	692.0	2.0	6.68		Caribou_2217	Caribou
	702.0	705.0	3.0	10.3		Caribou_2220	Caribou
	738.0	740.0	2.0	3.29		Caribou_2218	Caribou
OSK-W-21-2444	451.2	453.4	2.2	4.06		Caribou_2236	Caribou
	558.1	562.1	4.0	17.5		Caribou_2215	Caribou
including	561.1	562.1	1.0	38.1		Caribou_2215	Caribou
	572.0	574.0	2.0	4.30		Caribou_2250	Caribou
including	572.9	573.2	0.3	19.8		Caribou_2250	Caribou
OSK-W-21-2451	729.0	734.6	5.6	8.55		Caribou_2208	Caribou
including	734.0	734.6	0.6	34.0		Caribou_2208	Caribou
	739.5	742.3	2.8	20.7		Caribou_2208	Caribou
OSK-W-21-2455	594.0	596.1	2.1	5.35		Caribou_2211	Caribou
	666.7	668.8	2.1	3.55		Caribou_2208	Caribou
OSK-W-21-2460	438.9	441.7	2.8	9.51		Caribou_2116	Caribou
including	441.4	441.7	0.3	28.0		Caribou_2116	Caribou
WST-20-0479B	36.4	38.5	2.1	4.19		Mallard_5208	Mallard
	269.0	271.0	2.0	9.08		Z27_1123	Zone 27
including	269.0	270.0	1.0	18.0		Z27_1123	Zone 27
WST-20-0517	77.4	79.5	2.1	18.9		Mallard_5211	Mallard
including	77.4	78.0	0.6	47.1		Mallard_5211	Mallard
WST-20-0519	59.0	61.0	2.0	6.07		Mallard_5208	Mallard
WST-20-0520	176.2	178.3	2.1	6.20		Z27_1123	Zone 27
including	176.2	176.7	0.5	20.5		Z27_1123	Zone 27
WST-20-0521	191.3	193.7	2.4	4.40		Z27_1102	Zone 27
	195.2	197.2	2.0	4.76		Z27_1102	Zone 27
	231.9	234.3	2.4	7.99		Z27_1123	Zone 27
including	233.9	234.3	0.4	31.7		Z27_1123	Zone 27
WST-20-0555	118.8	121.6	2.8	10.8		Bobcat_2350	Bobcat
including	119.5	119.9	0.4	24.6
and	121.0	121.6	0.6	23.2
WST-20-0566	13.0	15.3	2.3	5.64		Mallard_5211	Mallard
including	14.0	14.3	0.3	15.7		Mallard_5211	Mallard
WST-20-0566A	255.5	259.3	3.8	13.4		Caribou_2100	Caribou
including	255.8	256.1	0.3	37.6
and	259.0	259.3	0.3	83.6
WST-20-0627	14.0	16.9	2.9	8.32		Mallard_5211	Mallard

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

Drill hole location

Hole Number	Azimuth (°)	Dip (°)	Length (m)	UTM E	UTM N	Elevation	Section
OSK-W-20-852-W4	330	-55	873	452874	5434552	398	2875
OSK-W-20-913-W1	334	-52	939	452878	5434419	401	2825
OSK-W-20-913-W2	334	-52	913	452878	5434419	401	2825
OSK-W-20-2354-W1	336	-60	792	452739	5434474	401	2725
OSK-W-20-2354-W2	336	-60	750	452739	5434474	401	2725
OSK-W-20-2354-W3	336	-60	750	452739	5434474	401	2725
OSK-W-20-2354-W4	336	-60	783	452739	5434474	401	2725
OSK-W-20-2359	335	-61	726	452694	5434440	401	2675
OSK-W-20-2359-W1	335	-61	696	452694	5434440	401	2675
OSK-W-20-2366	323	-55	534	452682	5434624	398	2750
OSK-W-20-2373	335	-65	647	452595	5434393	401	2550
OSK-W-20-2376	325	-55	510	452689	5434637	397	2750
OSK-W-20-2377	132	-49	1326	452702	5435548	409	3225
OSK-W-20-2387	336	-59	717	452694	5434440	401	2675
OSK-W-20-2388	326	-61	699	452715	5434606	397	2775
OSK-W-20-2390	330	-65	647	452595	5434393	401	2550
OSK-W-20-2399	333	-54	864	452874	5434552	398	2875
OSK-W-20-2400	336	-53	884	452876	5434419	402	2825
OSK-W-20-2405	332	-58	723	452694	5434440	401	2675
OSK-W-20-2405-W1	332	-58	716	452694	5434440	401	2675
OSK-W-20-2407	347	-55	993	452315	5434419	399	2325
OSK-W-20-2410	338	-62	768	452727	5434358	402	2650
OSK-W-20-2414	337	-54	882	452880	5434419	402	2825
OSK-W-20-2415	328	-54	755	452738	5434474	401	2725
OSK-W-20-2415-W1	328	-54	762	452738	5434474	401	2725
OSK-W-20-2425	336	-60	747	452715	5434606	397	2775
OSK-W-20-2432	333	-57	864	452809	5434415	404	2750
OSK-W-20-2437	329	-62	630	452597	5434393	401	2550
OSK-W-20-2438	331	-60	729	452695	5434401	402	2650
OSK-W-20-2440	330	-52	807	452738	5434474	401	2725
OSK-W-21-2444	337	-59	636	452715	5434606	397	2775
OSK-W-21-2451	330	-58	803	452809	5434415	404	2750
OSK-W-21-2455	328	-53	780	452738	5434474	401	2725
OSK-W-21-2460	332	-55	786	452732	5434537	399	2750
WST-20-0479B	138	-59	402	452281	5434975	262	2575
WST-20-0517	140	-55	400	452281	5434975	262	2575
WST-20-0519	136	-45	162	452282	5434976	262	2575
WST-20-0520	135	-46	388	452281	5434975	263	2575
WST-20-0521	153	-57	385	452281	5434975	262	2575
WST-20-0555	145	-25	160	452955	5435003	254	3175
WST-20-0566	132	-16	20	452208	5434898	248	2475
WST-20-0566A	132	-16	368	452208	5434898	248	2475
WST-20-0627	130	-18	84	452208	5434899	249	2475

Caribou Zone

Underdog

Mineralization most commonly occurs in gold-bearing quartz-pyrite (± tourmaline) veins and as disseminated and 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.

F-Zone

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

Bobcat

Mallard

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

Qualified Person

Quality Control and Reporting Protocols

About the Windfall Gold Deposit

The Windfall gold deposit is located between Val-d’Or and Chibougamau in the Abitibi region of Québec, Canada. The mineral resource defined by Osisko, as disclosed in the news release dated February 17, 2021 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, certain of which are described in the February 17, 2021 news release, will be further described in the full technical report being prepared for this updated mineral resource estimate in accordance with NI 43-101, and will be available on SEDAR (www.sedar.com) under the Corporation’s issuer profile within 45 days from February 17, 2021. 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.

Cautionary Note Regarding Forward-Looking Information

CONTACT INFORMATION:

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

OSISKO INFILL CONTINUES TO DELIVER WITH 342 g/t Au OVER 2.5 METRES

Posted on March 1, 2021November 8, 2023 by Yannick Fradette

(Toronto, March 1st, 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.

Infill drilling is currently focused on the Lynx deposit. Osisko Chief Executive Officer John Burzynski commented: “Lynx continues to deliver with high-grade and width as we infill the mineral resource estimate (“MRE”) areas published earlier this month.”

The table below contains resource definition infill intercepts located inside defined February 2021 MRE blocks (see Osisko news release dated February 17, 2021). Significant new analytical results are presented below, including 80 intercepts in 21 drill holes (7 from surface, 14 from underground) and 26 wedges.

Select intercepts include: 342 g/t Au over 2.5 metres in OSK-W-20-1432-W2; 37.7 g/t Au over 7.2 metres in OSK-W-20-2283-W5; 56.4 g/t Au over 4.0 metres, 18.3 g/t Au over 5.5 metres and 45.3 g/t Au over 2.1 metres in OSK-W-20-2256-W8; 79.8 g/t Au over 2.4 metres in OSK-W-20-2397; 63.8 g/t Au over 2.4 metres in OSK-W-20-2271-W6; 36.0 g/t Au over 2.7 metres in WST-20-0548A; 42.2 g/t Au over 2.0 metres in OSK-W-20-2280-W6; and 21.1 g/t Au over 4.0 metres in OSK-W-20-2283-W4. Maps showing hole locations and full analytical results are available at www.osiskomining.com

Infill Drilling

Hole No.	From (m)	To (m)	Interval (m)	Au (g/t) uncut	Au (g/t) cut to 100 g/t	Zone	Corridor
OSK-W-20-1432-W2	959.5	962.0	2.5	342	72.1	LX4_3437	Lynx
including	960.2	961.0	0.8	596	100	LX4_3437	Lynx
OSK-W-20-2133-W4	966.4	969.0	2.6	3.85		TLX_3188	Triple Lynx
OSK-W-20-2170-W7	971.0	973.0	2.0	25.5		TLX_3163	Triple Lynx
including	971.0	972.0	1.0	41.1		TLX_3163	Triple Lynx
	995.0	997.5	2.5	4.18		TLX_3163	Triple Lynx
	1051.0	1053.0	2.0	4.07		TLX_3162	Triple Lynx
OSK-W-20-2252-W5	901.0	903.0	2.0	3.30		TLX_3185	Triple Lynx
OSK-W-20-2252-W10	939.9	942.0	2.1	3.31		TLX_3163	Triple Lynx
OSK-W-20-2256-W8	872.5	877.0	4.5	4.39		TLX_3189	Triple Lynx
	883.2	887.0	3.8	4.17		TLX_3161	Triple Lynx
including	886.0	886.5	0.5	8.68		TLX_3161	Triple Lynx
	888.5	890.5	2.0	7.73		TLX_3161	Triple Lynx
including	889.4	889.9	0.5	30.2		TLX_3161	Triple Lynx
	901.7	905.7	4.0	56.4	48.5	TLX_3161	Triple Lynx
including	901.7	902.2	0.5	139	100
and	903.0	903.5	0.5	125	100
	907.7	913.2	5.5	18.3		TLX_3161	Triple Lynx
including	911.7	912.5	0.8	44.5		TLX_3161	Triple Lynx
	921.0	923.1	2.1	45.3		TLX_3161	Triple Lynx
including	922.1	923.1	1.0	92.7		TLX_3161	Triple Lynx
	961.0	966.3	5.3	13.4		TLX_3163	Triple Lynx
including	965.7	966.3	0.6	87.2		TLX_3163	Triple Lynx
	972.0	974.0	2.0	3.59		TLX_3163	Triple Lynx
	1001.2	1003.6	2.4	13.8		TLX_3164	Triple Lynx
including	1002.2	1002.6	0.4	40.5		TLX_3164	Triple Lynx
OSK-W-20-2271-W3	1093.0	1095.0	2.0	4.59		LX4_3440	Lynx
OSK-W-20-2271-W4	1085.0	1087.0	2.0	9.68		LX4_3418	Lynx
including	1085.0	1085.5	0.5	21.0		LX4_3418	Lynx
OSK-W-20-2271-W5	825.5	828.0	2.5	29.5	12.4	LXM_3317	Lynx
including	826.2	826.5	0.3	242	100	LXM_3317	Lynx
	1177.2	1179.8	2.6	6.19		LX4_3430	Lynx
OSK-W-20-2271-W6	849.0	851.0	2.0	5.07		LXM_3345	Lynx
	1131.6	1133.7	2.1	10.5		LX4_3434	Lynx
including	1132.7	1133.0	0.3	46.1		LX4_3434	Lynx
	1135.6	1138.0	2.4	63.8	26.7	LX4_3434	Lynx
including	1137.3	1137.7	0.4	323	100	LX4_3434	Lynx
OSK-W-20-2280-W2	1096.4	1098.8	2.4	6.46		TLX_3170	Triple Lynx
OSK-W-20-2280-W6	916.0	918.1	2.1	3.88		TLX_3161	Triple Lynx
including	916.7	917.1	0.4	16.3		TLX_3161	Triple Lynx
	951.0	953.7	2.7	3.43		TLX_3180	Triple Lynx
	956.0	958.0	2.0	3.64		TLX_3180	Triple Lynx
	965.0	967.0	2.0	42.2		TLX_3180	Triple Lynx
including	966.0	967.0	1.0	82.8		TLX_3180	Triple Lynx
	1033.1	1036.0	2.9	4.53		TLX_3164	Triple Lynx
including	1033.4	1033.8	0.4	25.0		TLX_3164	Triple Lynx
	1062.6	1064.9	2.3	7.50		TLX_3162	Triple Lynx
including	1063.5	1064.3	0.8	20.5		TLX_3162	Triple Lynx
OSK-W-20-2280-W7	1017.2	1019.6	2.4	4.06		TLX_3164	Triple Lynx
OSK-W-20-2280-W9	979.0	981.0	2.0	3.17		TLX_3180	Triple Lynx
	985.0	987.0	2.0	4.84		TLX_3180	Triple Lynx
including	986.7	987.0	0.3	21.0		TLX_3180	Triple Lynx
	1020.0	1022.5	2.5	5.00		TLX_3183	Triple Lynx
	1066.1	1069.0	2.9	5.01		TLX_3164	Triple Lynx
including	1066.1	1066.4	0.3	26.0		TLX_3164	Triple Lynx
	1082.0	1089.0	7.0	4.51		TLX_3162	Triple Lynx
including	1087.7	1088.1	0.4	22.2		TLX_3162	Triple Lynx
OSK-W-20-2283-W3	787.0	789.0	2.0	5.52		TLX_3171	Triple Lynx
including	788.0	788.3	0.3	35.6		TLX_3171	Triple Lynx
	805.0	807.0	2.0	3.51		TLX_3184	Triple Lynx
OSK-W-20-2283-W4	792.0	796.0	4.0	21.1		TLX_3171	Triple Lynx
	808.0	810.9	2.9	9.76		TLX_3184	Triple Lynx
including	809.1	810.0	0.9	19.6		TLX_3184	Triple Lynx
	921.0	926.0	5.0	5.16		TLX_3194	Triple Lynx
including	922.7	924.0	1.3	13.9		TLX_3194	Triple Lynx
OSK-W-20-2283-W5	803.8	811.0	7.2	37.7		TLX_3171	Triple Lynx
including	807.7	809.0	1.3	76.5		TLX_3171	Triple Lynx
OSK-W-20-2283-W7	840.0	847.0	7.0	10.4		TLX_3184	Triple Lynx
including	844.0	845.0	1.0	42.3		TLX_3184	Triple Lynx
	849.0	852.0	3.0	6.33		TLX_3184	Triple Lynx
OSK-W-20-2295-W4	882.0	884.3	2.3	26.8	21.5	TLX_3195	Triple Lynx
including	882.4	882.7	0.3	141	100
and	884.0	884.3	0.3	55.8
OSK-W-20-2313-W7	960.0	962.0	2.0	3.92		TLX_3193	Triple Lynx
including	960.7	961.4	0.7	11.0		TLX_3193	Triple Lynx
OSK-W-20-2313-W8	827.8	830.0	2.2	3.82		TLX_3171	Triple Lynx
including	828.6	828.9	0.3	20.8		TLX_3171	Triple Lynx
OSK-W-20-2322-W3	1138.0	1140.2	2.2	6.26		LX4_3430	Lynx
including	1139.6	1140.2	0.6	16.5		LX4_3430	Lynx
OSK-W-20-2346	978.0	980.0	2.0	12.1		LX4_3413	Lynx
	1092.0	1094.1	2.1	3.83		LX4_3438	Lynx
OSK-W-20-2363	630.0	632.1	2.1	16.7		TLX_3178	Triple Lynx
including	630.4	630.9	0.5	62.2		TLX_3178	Triple Lynx
OSK-W-20-2363-W1	955.0	957.0	2.0	7.28		TLX_3195	Triple Lynx
OSK-W-20-2375	887.3	890.0	2.7	9.19		LX4_3414	Lynx
including	888.3	889.0	0.7	31.4		LX4_3414	Lynx
OSK-W-20-2381-W1	1228.0	1230.0	2.0	8.54		LX4_3449	Lynx
including	1228.0	1228.7	0.7	24.3		LX4_3449	Lynx
OSK-W-20-2384	991.0	993.0	2.0	7.24		LX4_3430	Lynx
	1000.5	1003.0	2.5	26.5	22.2	LX4_3430	Lynx
including	1001.2	1001.7	0.5	122	100	LX4_3430	Lynx
	1013.0	1015.0	2.0	19.5		LX4_3430	Lynx
OSK-W-20-2385	755.0	757.3	2.3	17.0		LX4_3426	Lynx
including	755.0	756.0	1.0	38.1		LX4_3426	Lynx
	776.0	778.0	2.0	31.2		LX4_3426	Lynx
including	777.0	777.5	0.5	98.0		LX4_3426	Lynx
OSK-W-20-2385-W1	778.7	781.0	2.3	6.32		LX4_3426	Lynx
including	779.2	779.6	0.4	24.3		LX4_3426	Lynx
OSK-W-20-2394	652.0	654.0	2.0	5.93		TLX_3184	Triple Lynx
including	652.4	652.8	0.4	17.7		TLX_3184	Triple Lynx
OSK-W-20-2394-W1	642.8	645.0	2.2	14.5		TLX_3171	Triple Lynx
including	643.3	643.7	0.4	53.1		TLX_3171	Triple Lynx
OSK-W-20-2397	660.8	664.4	3.6	11.1		LXM_3304	Lynx
including	660.8	661.4	0.6	43.3		LXM_3304	Lynx
	667.5	669.9	2.4	79.8	41.9	LXM_3304	Lynx
including	668.2	669.1	0.9	201	100	LXM_3304	Lynx
	676.9	679.1	2.2	20.5		LXM_3304	Lynx
including	678.1	678.6	0.5	82.9		LXM_3304	Lynx
WST-20-0492	116.9	119.2	2.3	22.3	17.6	LXM_3303	Lynx
including	116.9	117.3	0.4	127	100	LXM_3303	Lynx
WST-20-0524	81.9	86.2	4.3	3.58		LXM_3311	Lynx
WST-20-0548A	67.6	70.3	2.7	36.0		LXM_3339	Lynx
including	67.6	68.3	0.7	64.9		LXM_3339	Lynx
WST-20-0553	131.7	134.1	2.4	8.67		LXM_3303	Lynx
including	132.3	132.8	0.5	33.0		LXM_3303	Lynx
WST-20-0570	70.7	72.7	2.0	8.74		LXM_3361	Lynx
including	70.7	71.7	1.0	16.9		LXM_3361	Lynx
	274.1	276.1	2.0	6.79		LXSW_3556	Lynx SW
including	274.1	275.0	0.9	13.0		LXSW_3556	Lynx SW
WST-20-0571	394.4	396.5	2.1	10.3		LXSW_3502	Lynx SW
including	395.8	396.1	0.3	60.1		LXSW_3502	Lynx SW
WST-20-0572A	285.0	287.0	2.0	6.39		LXSW_3556	Lynx
including	286.0	287.0	1.0	12.6		LXSW_3556	Lynx
WST-20-0577A	75.0	77.5	2.5	12.9		LXM_3303	Lynx
including	75.8	76.7	0.9	35.6		LXM_3303	Lynx
WST-20-0582	129.5	131.5	2.0	9.97		LXM_3339	Lynx
WST-20-0583	117.0	119.0	2.0	3.80		LXM_3307	Lynx
including	118.5	119.0	0.5	8.03		LXM_3307	Lynx
WST-20-0592	129.8	132.0	2.2	4.61		LXM_3303	Lynx
including	130.3	131.0	0.7	13.1		LXM_3303	Lynx
WST-20-0593	118.9	121.4	2.5	4.63		LXM_3303	Lynx
including	118.9	119.9	1.0	11.5		LXM_3303	Lynx
WST-20-0611	262.7	265.2	2.5	26.8		TLX_3161	Triple Lynx
including	262.7	263.6	0.9	66.9		TLX_3161	Triple Lynx
WST-20-0628	112.1	114.5	2.4	6.47		LXM_3334	Lynx
including	113.0	113.5	0.5	18.0		LXM_3334	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-20-1432-W2	132	-55	993	453811	5435779	400	4300
OSK-W-20-2133-W4	118	-49	987	453080	5435531	417	3525
OSK-W-20-2170-W7	128	-59	1205	453425	5435657	413	3900
OSK-W-20-2252-W5	129	-54	1092	453241	5435694	415	3750
OSK-W-20-2252-W10	129	-54	824	453241	5435694	415	3750
OSK-W-20-2256-W8	125	-51	1056	453160	5435686	411	3675
OSK-W-20-2271-W3	120	-53	1235	453462	5435683	410	3950
OSK-W-20-2271-W4	120	-53	1134	453462	5435683	410	3950
OSK-W-20-2271-W5	120	-53	1247	453462	5435683	410	3950
OSK-W-20-2271-W6	120	-53	1232	453462	5435683	410	3950
OSK-W-20-2280-W2	127	-58	1211	453304	5435639	415	3775
OSK-W-20-2280-W6	127	-58	1152	453304	5435639	415	3775
OSK-W-20-2280-W7	127	-58	1131	453304	5435639	415	3775
OSK-W-20-2280-W9	127	-58	1037	453304	5435639	415	3775
OSK-W-20-2283-W3	135	-50	1004	452997	5435607	425	3500
OSK-W-20-2283-W4	135	-50	1012	452997	5435607	425	3500
OSK-W-20-2283-W5	135	-50	1043	452997	5435607	425	3500
OSK-W-20-2283-W7	135	-50	1049	452997	5435607	425	3500
OSK-W-20-2295-W4	132	-51	1082	452933	5435473	415	3375
OSK-W-20-2313-W7	134	-52	1086	452965	5435583	420	3450
OSK-W-20-2313-W8	134	-52	1098	452965	5435583	420	3450
OSK-W-20-2322-W3	130	-54	1274	453608	5435715	403	4075
OSK-W-20-2346	130	-53	1161	453397	5435557	413	3825
OSK-W-20-2363	139	-52	1031	452930	5435548	419	3425
OSK-W-20-2363-W1	139	-52	1059	452930	5435548	419	3425
OSK-W-20-2375	122	-56	1160	453810	5435779	400	4300
OSK-W-20-2381-W1	134	-53	1274	453620	5435791	402	4125
OSK-W-20-2384	127	-52	1164	453397	5435557	413	3825
OSK-W-20-2385	125	-54	873	453687	5435679	401	4150
OSK-W-20-2385-W1	125	-54	937	453687	5435679	401	4150
OSK-W-20-2394	138	-52	864	452922	5435468	415	3375
OSK-W-20-2394-W1	138	-52	645	452922	5435468	415	3375
OSK-W-20-2397	131	-58	1197	453451	5435594	412	3900
WST-20-0492	158	-7	142	453256	5435209	97	3525
WST-20-0524	182	-44	243	453104	5435064	231	3325
WST-20-0548A	166	-59	370	453227	5435126	134	3475
WST-20-0553	148	-28	224	453257	5435209	96	3525
WST-20-0570	159	-50	454	453104	5435065	231	3325
WST-20-0571	167	-55	465	453104	5435065	231	3325
WST-20-0572A	136	-51	463	452955	5435004	252	3175
WST-20-0577A	117	-55	196	453316	5435167	124	3575
WST-20-0582	176	-56	144	453177	5435125	173	3425
WST-20-0583	176	-50	129	453177	5435125	173	3425
WST-20-0592	137	-26	205	453257	5435209	96	3525
WST-20-0593	149	-16	202	453257	5435209	96	3525
WST-20-0611	118	-63	378	453358	5435273	16	3650
WST-20-0628	150	-31	164	453321	5435235	55	3600

Lynx Zone

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

Qualified Person

Quality Control and Reporting Protocols

About the Windfall Gold Deposit

The Windfall gold deposit is located between Val-d’Or and Chibougamau in the Abitibi region of Québec, Canada. The mineral resource defined by Osisko, as disclosed in the news release dated February 17, 2021 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, certain of which are described in the February 17, 2021 news release, will be further described in the full technical report being prepared for this updated mineral resource estimate in accordance with NI 43-101, and will be available on SEDAR (www.sedar.com) under the Corporation’s issuer profile within 45 days from February 17, 2021. 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.

Cautionary Note Regarding Forward-Looking Information

CONTACT INFORMATION:

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

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Month: March 2021

OSISKO INFILL DRILLING RETURNS HIGH GRADE AT WINDFALL

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OSISKO WINDFALL EXPLORATION RAMP REACHES 500 METRES VERTICAL DEPTH

OSISKO INFILL DRILLING RETURNS HIGH GRADE AT LYNX

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OSISKO EXPANSION DRILLING ADDS NEW HIGH GRADE AT LYNX

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OSISKO MINING CORPORATE UPDATE

OSISKO EXPANSION DRILLING ADDS NEW HIGH GRADE AT WINDFALL

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OSISKO MINING ORDERS MILLING EQUIPMENT FOR WINDFALL

OSISKO FILES TECHNICAL REPORT FOR WINDFALL MINERAL RESOURCE ESTIMATE UPDATE

OSISKO WINDFALL INFILLS WITH HIGH-GRADE IN MULTIPLE ZONES 35.7 g/t Au Over 9.8 Metres in Underdog 65.6 g/t Au over 4.2 meters in Caribou

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OSISKO INFILL CONTINUES TO DELIVER WITH 342 g/t Au OVER 2.5 METRES

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