OSISKO WINDFALL DRILLING INTERSECTS MORE HIGH-GRADE

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

118 g/t Au Over 2.3 Metres in Triple Lynx

96.2 g/t Au Over 2.6 Metres in Lynx 4

(Toronto, December 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 35 intercepts in 14 drill holes (6 from surface, 8 from underground) and 9 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 high-grade intercepts with today’s results coming from across the deposit including from the Triple Lynx, Lynx 4, Caribou, Underdog, and F Zone areas. Targeted infill and expansion drilling will continue into 2022 to further define and expand our world-class gold deposit.”

Selected high-grade intercepts include 118 g/t Au over 2.3 metres in WST-21-0784; 96.2 g/t Au over 2.6 metres in OSK-W-21-2629; 108 g/t Au over 2.0 metres in OSK-W-21-2633; 83.5 g/t Au over 2.0 metres in WST-21-0855B; 37.8 g/t Au over 2.6 metres in OSK-W-21-2621. Maps showing hole locations and full analytical results are available at www.osiskomining.com. Maps:

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-21-1871-W1	963.0	965.8	2.8	12.7		UDD_4511	Underdog
OSK-W-21-1963-W9	1208.0	1210.0	2.0	9.63		LX4_3453	Lynx 4
	1297.8	1299.9	2.1	10.8		LX4_3449	Lynx 4
including	1298.6	1299.1	0.5	38.5		LX4_3449	Lynx 4
OSK-W-21-2531-W1	1098.0	1100.0	2.0	4.88		UDD_4513	Underdog
OSK-W-21-2544-W4	794.0	796.0	2.0	5.76		TLX_3184	Triple Lynx
OSK-W-21-2551-W4	926.0	928.0	2.0	10.9		LX4_3417	Lynx 4
including	926.5	927.1	0.6	25.6		LX4_3417	Lynx 4
OSK-W-21-2587-W2	1150.0	1152.0	2.0	8.39		TLX_3172	Triple Lynx
including	1150.3	1150.7	0.4	39.4		TLX_3172	Triple Lynx
OSK-W-21-2605	1284.4	1291.0	6.6	9.73		LX4_3449	Lynx 4
including	1284.4	1286.4	2.0	22.1
and	1289.9	1290.2	0.3	15.6
OSK-W-21-2621	651.1	653.5	2.4	16.6		UDD_4100	Underdog
including	652.0	653.0	1.0	39.3		UDD_4100	Underdog
	948.0	950.0	2.0	9.59		UDD_4514	Underdog
	953.0	955.0	2.0	14.2		UDD_4514	Underdog
OSK-W-21-2625-W1	803.0	806.5	3.5	5.74		LX4_3437	Lynx 4
OSK-W-21-2629	930.6	933.2	2.6	96.2	50.0	LX4_3437	Lynx 4
including	932.2	933.2	1.0	220	100	LX4_3437	Lynx 4
	944.0	946.1	2.1	32.2		LX4_3437	Lynx 4
including	944.3	945.1	0.8	84.0		LX4_3437	Lynx 4
OSK-W-21-2633	146.6	148.6	2.0	108	57.4	F11_6000	F-11
including	147.0	148.0	1.0	202	100	F11_6000	F-11
OSK-W-21-2636	357.0	359.3	2.3	33.6	22.3	CA1_2551	Caribou
including	358.0	358.5	0.5	152	100	CA1_2551	Caribou
WST-21-0649	704.2	706.8	2.6	3.89		LX4_3427	Lynx 4
including	704.2	704.5	0.3	10.8		LX4_3427	Lynx 4
	756.9	759.0	2.1	22.2		LX4_3412	Lynx 4
WST-21-0784	259.8	262.1	2.3	118	57.4	TLX_3161	Triple Lynx
including	260.2	261.4	1.2	216	100	TLX_3161	Triple Lynx
WST-21-0855B	177.2	181.3	4.1	13.6		LXM_3440	Lynx
including	178.1	178.4	0.3	31.3		LXM_3440	Lynx
	541.8	543.8	2.0	83.5	33.4	LX4_3404	Lynx 4
including	543.2	543.8	0.6	267	100	LX4_3404	Lynx 4
WST-21-0861	105.1	107.2	2.1	8.56		LXM_3311	Lynx
WST-21-0873	255.0	257.3	2.3	4.01		LSW_3500	Lynx SW
including	256.0	256.3	0.3	17.5		LSW_3500	Lynx SW
WST-21-0888	71.0	73.0	2.0	5.79		LXM_3336	Lynx
WST-21-0893	43.6	45.8	2.2	4.91		LXM_3303	Lynx
including	44.0	44.7	0.7	15.4		LXM_3303	Lynx

Notes: True widths are estimated at 55 – 80% of the reported core length interval. See “Quality Control and Reporting Protocols” below. CA1 = Caribou, LX4 = Lynx 4, LXM = Lynx Main, LSW = Lynx South West, TLX = Triple Lynx, UDD = Underdog, F11 = F Zones.

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-W12	861.0	863.0	2.0	5.30		LX4	Lynx 4
	927.0	930.0	3.0	19.6		LX4	Lynx 4
	933.5	935.8	2.3	14.2		LX4	Lynx 4
OSK-W-21-2522-W2	767.0	769.0	2.0	6.62		LXM	Lynx
OSK-W-21-2544-W4	813.9	816.2	2.3	18.8	13.5	TLX	Triple Lynx
including	815.4	815.7	0.3	141	100	TLX	Triple Lynx
OSK-W-21-2587-W2	1077.0	1079.0	2.0	11.3		TLX	Triple Lynx
including	1077.0	1077.8	0.8	27.1		TLX	Triple Lynx
OSK-W-21-2597	704.0	706.0	2.0	15.0		LX4	Lynx 4
including	704.5	705.0	0.5	34.7		LX4	Lynx 4
OSK-W-21-2621	722.0	724.6	2.6	37.8	18.0	UDD	Underdog
including	724.0	724.3	0.3	272	100	UDD	Underdog
WST-21-0873	300.0	302.0	2.0	8.00		LSW	Lynx SW
WST-21-0913	567.0	569.0	2.0	8.45		LX4	Lynx 4
including	568.1	568.5	0.4	41.5		LX4	Lynx 4

Notes: True widths are estimated at 55 – 80% of the reported core length interval. See “Quality Control and Reporting Protocols” below. LSW = Lynx South West, LXM = Lynx Main, 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-21-1432-W12	132	-55	1113	453811	5435779	400	4300
OSK-W-21-1871-W1	331	-56	1119	452496	5434397	402	2475
OSK-W-21-1963-W9	123	-58	1388	453761	5435816	401	4275
OSK-W-21-2522-W2	128	-54	917	453450	5435592	411	3900
OSK-W-21-2531-W1	344	-62	1215	452566	5434415	403	2550
OSK-W-21-2544-W4	128	-50	858	452960	5435539	419	3425
OSK-W-21-2551-W4	120	-55	1026	453622	5435635	405	4050
OSK-W-21-2587-W2	127	-59	1167	453350	5435673	418	3850
OSK-W-21-2597	13	-75	861	454135	5435058	397	4225
OSK-W-21-2605	112	-55	1401	453552	5435669	408	4025
OSK-W-21-2621	344	-53	1001	452272	5434396	399	2275
OSK-W-21-2625-W1	33	-77	846	454135	5435058	396	4225
OSK-W-21-2629	114	-57	1011	453622	5435635	405	4050
OSK-W-21-2633	157	-47	189	452365	5435894	405	3100
OSK-W-21-2636	337	-52	801	452499	5434619	403	2575
WST-21-0649	136	-47	790	453258	5435211	98	3525
WST-21-0784	132	-66	361	453507	5435327	-7	3800
WST-21-0855B	118	-45	751	453507	5435333	-48	3800
WST-21-0861	139	-64	307	453106	5435066	231	3325
WST-21-0873	152	-61	507	453105	5435065	231	3325
WST-21-0888	140	-34	111	453314	5435164	124	3550
WST-21-0893	142	-24	120	453314	5435164	124	3550
WST-21-0913	138	-49	594	453322	5435236	54	3600

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-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.

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.

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), 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 2,600 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 DRILLING INTERCEPTS WIDE HIGH-GRADE IN EXPANSION HOLES

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

163 g/t Au over 8.8 metres in Lynx 4

32.4 g/t Au over 5.7 metres in Triple Lynx

(Toronto, December 8, 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 97 intercepts in 31 drill holes (12 from surface, 19 from underground) and 22 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 underscore once again how much room there is to grow at Windfall with the headline holes located outside the resource released in February earlier this year. Targeted infill drilling also returned high-grade intercepts highlighting the robust grade of the deposit.”

Selected high-grade intercepts include: 163 g/t Au over 8.8 metres in OSK-W-21-1462-W11; 178 g/t Au over 2.9 metres in OSK-W-21-2551-W5; 135 g/t Au over 2.0 metres in OSK-W-21-1871-W1; 104 g/t Au over 2.4 metres in OSK-W-21-1949-W6; 95.2 g/t Au over 2.1 metres in OSK-W-21-2287-W7; 32.4 g/t Au over 5.7 metres in OSK-W-21-2540-W5, 49.4 g/t Au over 2.0 metres in WST-21-0903, 35.7 g/t Au over 2.4 metres in WST-21-0901, 21.5 g/t Au over 4.0 metres in OSK-W-21-2544-W2 and 42.7 g/t Au over 2.0 metres in WST-21-0879. Maps showing hole locations and full analytical results are available at www.osiskomining.com. Maps: Long Section In EN 20211208, Long Section Ex EN 20211208, PR_EN_20211208_Surface, PR_EN_20211208_UG.

Infill

Hole No.	From (m)	To (m)	Interval (m)	Au (g/t) uncut	Au (g/t) cut to 100 g/t	Zone	Corridor
OSK-W-21-1871-W1	888.6	891.0	2.4	12.5		UDD_4106	Underdog
	1008.0	1010.0	2.0	135	50.1	UDD_4501	Underdog
including	1008.0	1009.0	1.0	270	100	UDD_4501	Underdog
OSK-W-21-1871-W3	491.0	493.1	2.1	7.90		CA2_2211	Caribou
including	491.5	491.9	0.4	18.8		CA2_2211	Caribou
	549.0	551.0	2.0	5.32		CA2_2233	Caribou
OSK-W-21-1949-W6	747.2	749.6	2.4	104	27.6	LXM_3345	Lynx
including	748.1	748.6	0.5	466	100	LXM_3345	Lynx
OSK-W-21-2287-W7	1213.9	1216.0	2.1	95.2		LX4_3449	Lynx 4
OSK-W-21-2407-W2	802.0	805.0	3.0	8.55		UDD_4106	Underdog
including	802.8	803.5	0.7	21.1		UDD_4106	Underdog
OSK-W-21-2416-W7	1018.0	1020.0	2.0	41.3	15.8	TLX_3162	Triple Lynx
including	1019.3	1019.6	0.3	270	100	TLX_3162	Triple Lynx
	1032.0	1034.0	2.0	36.8	23.9	TLX_3162	Triple Lynx
including	1032.9	1033.2	0.3	186	100	TLX_3162	Triple Lynx
OSK-W-21-2512-W2	433.0	435.0	2.0	7.24		CA2_2211	Caribou
	687.6	690.0	2.4	28.2		UDD_4100	Underdog
including	688.3	689.3	1.0	65.8		UDD_4100	Underdog
	694.0	696.0	2.0	6.01		UDD_4100	Underdog
	715.0	720.0	5.0	5.04		UDD_4102	Underdog
	724.0	726.0	2.0	4.28		UDD_4102	Underdog
OSK-W-21-2531-W3	810.0	813.0	3.0	11.4		UDD_4110	Underdog
	873.0	877.0	4.0	10.3		UDD_4101	Underdog
	913.0	916.4	3.4	10.2		UDD_4100	Underdog
OSK-W-21-2531-W4	845.3	847.3	2.0	6.79		UDD_4101	Underdog
including	845.3	845.6	0.3	35.3		UDD_4101	Underdog
OSK-W-21-2532-W3	828.0	833.0	5.0	8.29		UDD_4100	Underdog
including	832.0	833.0	1.0	24.0		UDD_4100	Underdog
	837.8	842.0	4.2	19.0	16.1	UDD_4100	Underdog
including	840.0	840.4	0.4	131	100	UDD_4100	Underdog
OSK-W-21-2537-W3	938.0	940.0	2.0	12.6		TLX_3183	Triple Lynx
OSK-W-21-2544-W2	774.9	777.0	2.1	4.22		TLX_3171	Triple Lynx
	783.0	787.0	4.0	21.5		TLX_3171	Triple Lynx
including	784.5	785.2	0.7	62.8		TLX_3171	Triple Lynx
	793.0	795.0	2.0	19.0		TLX_3184	Triple Lynx
including	794.0	794.4	0.4	93.3		TLX_3184	Triple Lynx
	989.0	991.0	2.0	17.5		TLX_3195	Triple Lynx
including	989.4	990.0	0.6	58.1		TLX_3195	Triple Lynx
OSK-W-21-2551-W5	941.3	943.5	2.2	17.3		LX4_3430	Lynx 4
including	942.0	942.4	0.4	78.6		LX4_3430	Lynx 4
	958.4	961.3	2.9	178	36.3	LX4_3430	Lynx 4
including	958.8	959.7	0.9	556	100	LX4_3430	Lynx 4
OSK-W-21-2578-W3	604.7	606.9	2.2	7.71		UDD_4100	Underdog
including	606.1	606.9	0.8	20.9		UDD_4100	Underdog
OSK-W-21-2587-W1	1030.0	1032.0	2.0	20.5		TLX_3163	Triple Lynx
	1038.0	1040.0	2.0	5.36		TLX_3164	Triple Lynx
including	1038.7	1039.0	0.3	27.1		TLX_3164	Triple Lynx
	1046.0	1049.0	3.0	3.99		TLX_3164	Triple Lynx
	1089.0	1091.0	2.0	5.66		TLX_3162	Triple Lynx
including	1089.0	1089.4	0.4	16.6		TLX_3162	Triple Lynx
	1105.6	1109.0	3.4	8.17		TLX_3170	Triple Lynx
OSK-W-21-2600	475.8	478.0	2.2	5.70		Z27_1115	Zone 27
OSK-W-21-2605	1312.0	1314.0	2.0	5.62		LX4_3445	Lynx 4
OSK-W-21-2612-W1	382.6	384.9	2.3	4.02		Z27_1115	Zone 27
including	382.6	383.0	0.4	14.4		Z27_1115	Zone 27
OSK-W-21-2613	916.2	922.0	5.8	14.6		TLX_3161	Triple Lynx
including	916.2	916.6	0.4	38.1
and	918.7	919.3	0.6	41.0
	967.9	970.0	2.1	19.8		TLX_3163	Triple Lynx
including	967.9	968.3	0.4	60.9
and	968.9	969.3	0.4	42.5
	994.0	996.0	2.0	3.77		TLX_3164	Triple Lynx
including	994.4	995.0	0.6	8.21		TLX_3164	Triple Lynx
OSK-W-21-2621	628.0	630.0	2.0	18.6		UDD_4101	Underdog
OSK-W-21-2625	814.9	817.3	2.4	10.9		LX4_3437	Lynx 4
including	814.9	815.2	0.3	55.1		LX4_3437	Lynx 4
OSK-W-21-2631	133.0	135.0	2.0	26.5		F11_6001	F-11
OSK-W-21-2632	103.0	105.0	2.0	3.66		F11_6000	F-11
	139.0	141.5	2.5	19.6		F11_6009	F-11
including	139.6	140.5	0.9	47.7		F11_6009	F-11
OSK-W-21-2635	568.0	570.4	2.4	4.21		CA2_2211	Caribou
including	570.1	570.4	0.3	24.2		CA2_2211	Caribou
OSK-W-21-2636	365.0	367.0	2.0	4.26		CA1_2551	Caribou
including	366.0	366.4	0.4	12.4		CA1_2551	Caribou
	550.0	552.0	2.0	13.0		Z27_1107	Zone 27
including	551.0	551.7	0.7	35.6		Z27_1107	Zone 27
OSK-W-21-2641	118.4	124.0	5.6	4.04		F11_6001	F-11
WST-21-0649	456.0	458.0	2.0	6.23		TLX_3165	Triple Lynx
WST-21-0875	510.0	512.7	2.7	20.7	18.8	LX4_3450	Lynx 4
including	512.2	512.7	0.5	111	100	LX4_3450	Lynx 4
WST-21-0878	346.0	348.3	2.3	7.43		TLX_3131	Triple Lynx
including	348.0	348.3	0.3	37.7		TLX_3131	Triple Lynx
WST-21-0879	510.0	512.0	2.0	42.7	25.8	LX4_3450	Lynx 4
including	510.5	511.0	0.5	168	100	LX4_3450	Lynx 4
	612.5	615.0	2.5	24.0		LX4_3429	Lynx 4
including	612.5	613.0	0.5	78.8		LX4_3429	Lynx 4
WST-21-0900	272.9	275.4	2.5	5.33		LHW_3215	Lynx HW
including	275.0	275.4	0.4	22.2		LHW_3215	Lynx HW
WST-21-0901	308.0	310.4	2.4	35.7	24.5	LHW_3215	Lynx HW
including	309.6	309.9	0.3	189	100	LHW_3215	Lynx HW
WST-21-0907	509.5	512.5	3.0	19.8		LX4_3430	Lynx 4
including	509.5	511.0	1.5	39.5		LX4_3430	Lynx 4
	644.0	646.1	2.1	38.8	35.1	LX4_3448	Lynx 4
including	645.0	645.5	0.5	116	100	LX4_3448	Lynx 4
WST-21-0912	603.0	605.1	2.1	38.6		LX4_3429	Lynx 4
including	603.6	604.5	0.9	74.9		LX4_3429	Lynx 4
WST-21-0920B	301.1	303.2	2.1	4.08		LHW_3215	Lynx HW
WST-21-0922	102.0	104.0	2.0	3.57		LXM_3304	Lynx

Notes: True widths are estimated at 55 – 80% of the reported core length interval. See “Quality Control and Reporting Protocols” below. CA1 and CA2 = Caribou, LX4 = Lynx 4, LHW = Lynx Hanging Wall, LXM = Lynx Main, TLX = Triple Lynx, UDD = Underdog, F11 = F-Zones, 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-21-1432-W11	929.3	938.1	8.8	163	26.0	LX4	Lynx
including	929.3	931.0	1.7	811	100	LX4	Lynx
OSK-W-21-1871-W2	754.0	756.0	2.0	4.06		UDD	Underdog
OSK-W-21-2287-W7	1233.0	1235.0	2.0	24.2		LX4	Lynx 4
including	1233.5	1234.4	0.9	49.0		LX4	Lynx 4
OSK-W-21-2407-W2	769.3	771.9	2.6	13.4		UDD	Underdog
including	769.3	769.7	0.4	57.1		UDD	Underdog
OSK-W-21-2465-W4	765.6	767.7	2.1	23.0		TLX	Triple Lynx
including	766.8	767.7	0.9	50.2		TLX	Triple Lynx
OSK-W-21-2465-W6	938.0	940.0	2.0	4.61		TLX	Triple Lynx
OSK-W-21-2540-W5	948.0	953.7	5.7	32.4	26.1	TLX	Triple Lynx
including	951.7	952.7	1.0	136	100	TLX	Triple Lynx
OSK-W-21-2540-W6	949.0	951.0	2.0	11.8		TLX	Triple Lynx
including	949.0	950.0	1.0	23.3		TLX	Triple Lynx
	955.0	957.0	2.0	29.0		TLX	Triple Lynx
including	955.6	956.4	0.8	71.1		TLX	Triple Lynx
OSK-W-21-2544-W2	819.0	821.0	2.0	5.18		TLX	Triple Lynx
including	819.9	820.2	0.3	29.7		TLX	Triple Lynx
OSK-W-21-2578-W3	589.5	591.6	2.1	7.42		UDD	Underdog
including	590.1	590.7	0.6	24.7		UDD	Underdog
OSK-W-21-2587-W1	967.0	969.0	2.0	4.01		TLX	Triple Lynx
including	967.0	967.9	0.9	8.06		TLX	Triple Lynx
OSK-W-21-2589	131.6	133.6	2.0	7.71		LNX	Lynx
including	132.8	133.2	0.4	31.0		LNX	Lynx
OSK-W-21-2599	725.0	727.0	2.0	24.7		CA2	Caribou
including	725.0	726.0	1.0	49.3		CA2	Caribou
	730.0	732.0	2.0	5.92		CA2	Caribou
	745.4	748.3	2.9	5.42		CA2_2220	Caribou
OSK-W-21-2613	1015.0	1017.0	2.0	5.65		TLX	Triple Lynx
OSK-W-21-2635	597.3	600.0	2.7	12.0		CA2	Caribou
including	598.1	598.4	0.3	40.4		CA2	Caribou
WST-21-0649	606.0	608.0	2.0	5.94		LX4	Lynx
including	606.4	606.7	0.3	37.2		LX4	Lynx
WST-21-0793	74.0	76.0	2.0	3.72		LNX	Lynx
including	74.3	75.1	0.8	8.11		LNX	Lynx
WST-21-0863	336.3	338.7	2.4	6.80		TLX	Triple Lynx
including	338.3	338.7	0.4	29.1		TLX	Triple Lynx
WST-21-0878	138.0	140.5	2.5	3.93		TLX	Triple Lynx
WST-21-0886	231.0	233.0	2.0	8.62		LSW	Lynx SW
including	232.6	233.0	0.4	42.8		LSW	Lynx SW
	319.2	323.8	4.6	6.98		LSW	Lynx SW
including	319.2	319.5	0.3	35.7
and	320.1	320.4	0.3	30.9
	362.4	364.4	2.0	4.74		LSW_3502	Lynx SW
including	362.4	362.7	0.3	31.0		LSW_3502	Lynx SW
WST-21-0894B	101.0	103.0	2.0	4.94		BCT	Bobcat
including	101.3	101.8	0.5	19.0		BCT	Bobcat
WST-21-0898	239.5	241.8	2.3	10.3		TLX	Triple Lynx
including	240.7	241.4	0.7	31.4		TLX	Triple Lynx
WST-21-0903	274.1	276.1	2.0	49.4		TLX	Triple Lynx
WST-21-0907	567.0	569.0	2.0	7.94		LX4	Lynx
including	567.0	567.8	0.8	19.5		LX4	Lynx
	583.0	585.0	2.0	3.53		LX4	Lynx 4
including	583.5	584.0	0.5	13.5		LX4	Lynx 4
WST-21-0909	366.4	368.5	2.1	3.88		TLX	Triple Lynx
including	367.8	368.1	0.3	11.3		TLX	Triple Lynx
	384.0	386.4	2.4	5.94		TLX	Triple Lynx
including	385.1	385.5	0.4	32.1		TLX	Triple Lynx
	409.0	411.5	2.5	4.92		TLX	Triple Lynx
including	411.1	411.5	0.4	15.3		TLX	Triple Lynx
WST-21-0915B	247.0	249.5	2.5	9.56		TLX	Triple Lynx
including	247.0	247.5	0.5	45.0		TLX	Triple Lynx
	358.6	361.2	2.6	22.2		TLX	Triple Lynx
including	359.6	360.3	0.7	63.7		TLX	Triple Lynx
	368.2	370.5	2.3	4.01		TLX	Triple Lynx
WST-21-0916A	386.0	388.0	2.0	4.68		TLX	Triple Lynx
including	387.2	387.5	0.3	10.6		TLX	Triple Lynx

Notes: True widths are estimated at 55 – 80% of the reported core length interval. See “Quality Control and Reporting Protocols” below. BCT = Bobcat, CA2 = Caribou, LNX= Lynx, LSW = Lynx South West, 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-21-1432-W11	132	-55	1149	453811	5435779	400	4300
OSK-W-21-1871-W1	331	-56	1119	452496	5434397	402	2475
OSK-W-21-1871-W2	331	-56	915	452496	5434397	402	2475
OSK-W-21-1871-W3	331	-56	906	452496	5434397	402	2475
OSK-W-21-1949-W6	105	-57	1227	453440	5435479	401	3825
OSK-W-21-2287-W7	116	-53	1320	453607	5435714	404	4075
OSK-W-21-2407-W2	347	-55	843	452315	5434420	399	2325
OSK-W-21-2416-W7	123	-54	1104	453169	5435624	412	3650
OSK-W-21-2465-W4	123	-61	1053	453398	5435556	413	3825
OSK-W-21-2465-W6	123	-61	993	453398	5435556	413	3825
OSK-W-21-2512-W2	331	-54	834	452448	5434465	400	2475
OSK-W-21-2531-W3	344	-62	1329	452566	5434415	403	2550
OSK-W-21-2531-W4	344	-62	1203	452566	5434415	403	2550
OSK-W-21-2532-W3	341	-60	1191	452478	5434430	401	2475
OSK-W-21-2537-W3	114	-54	1024	452981	5435549	420	3450
OSK-W-21-2540-W5	117	-60	1311	453465	5435640	410	3925
OSK-W-21-2540-W6	117	-60	1541	453465	5435640	410	3925
OSK-W-21-2544-W2	128	-50	1044	452960	5435539	419	3425
OSK-W-21-2551-W5	120	-55	1023	453622	5435635	405	4050
OSK-W-21-2578-W3	350	-53	723	452178	5434397	399	2200
OSK-W-21-2587-W1	127	-59	1176	453350	5435673	418	3850
OSK-W-21-2589	130	-49	663	452960	5435539	420	3425
OSK-W-21-2599	328	-62	774	452787	5434526	397	2800
OSK-W-21-2600	329	-50	789	452470	5434626	403	2550
OSK-W-21-2605	112	-55	1401	453552	5435669	408	4025
OSK-W-21-2612-W1	333	-51	690	452391	5434638	402	2500
OSK-W-21-2613	114	-53	1092	452981	5435549	420	3450
OSK-W-21-2621	344	-53	1001	452272	5434396	399	2275
OSK-W-21-2625	33	-77	891	454135	5435058	396	4225
OSK-W-21-2631	158	-47	165	452336	5435850	406	3050
OSK-W-21-2632	141	-44	153	452363	5435857	406	3075
OSK-W-21-2635	327	-56	708	452684	5434475	402	2675
OSK-W-21-2636	337	-52	801	452499	5434619	403	2575
OSK-W-21-2641	177	-46	165	452436	5435884	407	3150
WST-21-0649	136	-47	790	453258	5435211	98	3525
WST-21-0793	125	-15	121	453463	5435327	32	3775
WST-21-0863	135	-64	403	453508	5435327	-7	3800
WST-21-0875	144	-47	577	453322	5435235	54	3600
WST-21-0878	128	-40	711	453375	5435297	-26	3675
WST-21-0879	139	-44	724	453258	5435209	96	3525
WST-21-0886	128	-51	375	452954	5435004	253	3175
WST-21-0894B	132	-52	417	452955	5435004	253	3175
WST-21-0898	141	-61	402	453508	5435327	-7	3800
WST-21-0900	122	-13	316	453462	5435326	33	3775
WST-21-0901	116	-18	340	453462	5435327	32	3775
WST-21-0903	120	-61	322	453509	5435328	-7	3800
WST-21-0907	130	-40	701	453374	5435296	-26	3675
WST-21-0909	151	-59	426	453507	5435328	-7	3800
WST-21-0912	141	-41	640	453258	5435209	96	3525
WST-21-0915B	143	-63	490	453507	5435328	-7	3800
WST-21-0916A	146	-52	586	453321	5435235	54	3600
WST-21-0920B	135	-24	348	453462	5435326	32	3775
WST-21-0922	146	-35	114	453314	5435164	124	3550

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.

Caribou Zone

F-Zones

Lynx Zone

Underdog

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.

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 20211208

Long Section Ex EN 20211208

PR_EN_20211208_Surface

PR_EN_20211208_UG

OSISKO WINDFALL DRILLING CONTINUES TO INTERCEPT HIGH-GRADE ACROSS THE WINDFALL DEPOSIT

Posted on December 2, 2021November 8, 2023 by lboivin

576 g/t Au over 2.7 metres in Triple Lynx

93.1 g/t Au over 3.0 metres in Caribou

22.3 g/t Au over 4.4 metres in Underdog

(Toronto, December 2, 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 135 intercepts in 37 drill holes (18 from surface, 19 from underground) and 22 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: “Though the main infill drill campaign at Windfall has been successfully completed in support of the upcoming mineral resource estimate update, we continue with targeted infill and expansion drilling. Today’s results are part of this continuing program and clearly demonstrate Windfall’s growth upside, especially the expansion results”.

Selected high-grade intercepts include: 576 g/t Au over 2.7 metres, 17.6 g/t Au over 10.6 metres and 15.7 g/t Au over 8.1 metres in OSK-W-21-2587; 221 g/t Au over 2.0 metres in WST-21-0877; 127 g/t Au over 2.6 metres in OSK-W-21-2537-W3; 93.1 g/t Au over 3.0 metres in OSK-W-21-2606; 28.6 g/t Au over 4.9 metres in OSK-W-21-2540-W4; 34.7 g/t Au over 3.8 metres in OSK-W-21-1963-W8; 37.4 g/t Au over 3.0 metres in OSK-W-21-1963-W7, 15.4 g/t Au over 6.8 metres in WST-21-0857A and 22.3 g/t Au over 4.4 metres in OSK-W-21-2532-W3. 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-21-1949-W11	1047.2	1049.6	2.4	3.57		LX4_3430	Lynx 4
	1053.6	1059.0	5.4	5.31		LX4_3434	Lynx 4
OSK-W-21-1963-W7	1331.6	1334.6	3.0	37.4		LX4_3449	Lynx 4
including	1331.6	1332.3	0.7	99.1		LX4_3449	Lynx 4
	1345.0	1347.0	2.0	4.96		LX4_3445	Lynx 4
including	1345.6	1346.2	0.6	13.1		LX4_3445	Lynx 4
	1374.0	1376.0	2.0	19.8		LX4_3445	Lynx 4
including	1374.7	1375.4	0.7	38.8		LX4_3445	Lynx 4
	1378.8	1382.5	3.7	6.39		LX4_3445	Lynx 4
OSK-W-21-1963-W8	1340.7	1344.5	3.8	34.7	26.1	LX4_3449	Lynx 4
including	1341.6	1342.1	0.5	166	100	LX4_3449	Lynx 4
OSK-W-21-2287-W7	1138.0	1140.2	2.2	4.78		LX4_3453	Lynx 4
including	1139.6	1140.2	0.6	16.5		LX4_3453	Lynx 4
	1219.8	1222.0	2.2	6.56		LX4_3449	Lynx 4
including	1220.3	1221.0	0.7	19.7		LX4_3449	Lynx 4
OSK-W-21-2287-W9	1237.2	1239.4	2.2	6.50		LX4_3449	Lynx 4
OSK-W-21-2400-W1	672.0	674.0	2.0	3.63		CA1	Caribou
including	672.4	672.7	0.3	23.1		CA1	Caribou
	762.0	764.0	2.0	4.43		CA2_2208	Caribou
	820.0	822.3	2.3	4.03		CA2_2218	Caribou
OSK-W-21-2416-W7	939.9	944.0	4.1	9.01		TLX_3161	Triple Lynx
including	940.3	941.0	0.7	24.2		TLX_3161	Triple Lynx
	966.6	969.0	2.4	9.84		TLX_3163	Triple Lynx
	985.0	987.1	2.1	8.85		TLX_3163	Triple Lynx
including	986.0	986.3	0.3	36.3		TLX_3163	Triple Lynx
	1006.0	1008.1	2.1	6.21		TLX_3164	Triple Lynx
including	1007.8	1008.1	0.3	35.5		TLX_3164	Triple Lynx
	1051.5	1053.5	2.0	20.2		TLX_3170	Triple Lynx
	1086.0	1089.0	3.0	4.33		TLX_3172	Triple Lynx
	1096.0	1098.2	2.2	7.08		TLX_3193	Triple Lynx
including	1097.1	1097.6	0.5	21.4		TLX_3193	Triple Lynx
OSK-W-21-2479-W10	464.0	466.0	2.0	4.52		Z27_1203	Zone 27
including	464.7	465.2	0.5	13.2		Z27_1203	Zone 27
	694.1	696.4	2.3	6.32		UDD_4100	Underdog
OSK-W-21-2479-W11	709.7	712.0	2.3	9.08		UDD_4102	Underdog
including	709.7	710.0	0.3	22.5
and	710.3	710.7	0.4	33.3
OSK-W-21-2531-W3	635.0	637.6	2.6	5.99		CA2_2206	Caribou
including	636.7	637.6	0.9	13.9		CA2_2206	Caribou
OSK-W-21-2531-W4	870.6	872.6	2.0	4.42		UDD_4100	Underdog
	1043.5	1045.7	2.2	3.56		UDD_4915	Underdog
	1075.7	1077.7	2.0	3.50		UDD_4501	Underdog
including	1075.7	1076.0	0.3	16.1		UDD_4501	Underdog
OSK-W-21-2532-W3	909.0	911.0	2.0	7.17		UDD_4106	Underdog
	1036.0	1038.0	2.0	4.23		UDD_4911	Underdog
	1081.6	1086.0	4.4	22.3	20.6	UDD_4513	Underdog
including	1084.7	1085.4	0.7	111	100	UDD_4513	Underdog
	1139.0	1141.0	2.0	6.04		UDD_4512	Underdog
OSK-W-21-2537-W3	908.0	910.6	2.6	127	61.2	TLX_3161	Triple Lynx
including	909.1	910.0	0.9	276	100	TLX_3161	Triple Lynx
OSK-W-21-2551-W4	834.6	836.8	2.2	15.9		LX4_3424	Lynx 4
including	836.3	836.8	0.5	67.7		LX4_3424	Lynx 4
	887.6	889.9	2.3	28.9		LX4_3414	Lynx 4
including	889.4	889.9	0.5	90.1		LX4_3414	Lynx 4
	900.0	902.0	2.0	3.75		LX4_3437	Lynx 4
	911.0	913.0	2.0	7.13		LX4_3437	Lynx 4
OSK-W-21-2578	156.0	158.0	2.0	14.6		CA1_2505	Caribou
including	157.0	158.0	1.0	28.8		CA1_2505	Caribou
	165.9	168.0	2.1	9.77		CA1_2505	Caribou
	178.0	180.0	2.0	6.42		CA1_2505	Caribou
OSK-W-21-2578-W2	606.0	608.0	2.0	3.60		UDD_4100	Underdog
OSK-W-21-2587	1042.5	1046.0	3.5	7.33		TLX_3164	Triple Lynx
	1073.0	1077.0	4.0	21.3		TLX_3162	Triple Lynx
including	1075.8	1077.0	1.2	42.9		TLX_3162	Triple Lynx
	1098.4	1101.1	2.7	576	20.0	TLX_3170	Triple Lynx
including	1100.7	1101.1	0.4	3850	100	TLX_3170	Triple Lynx
	1104.1	1112.2	8.1	15.7		TLX_3170	Triple Lynx
including	1107.7	1108.1	0.4	63.1		TLX_3170	Triple Lynx
OSK-W-21-2589-W2	736.2	738.5	2.3	34.9		TLX_3171	Triple Lynx
including	737.1	738.0	0.9	88.1		TLX_3171	Triple Lynx
OSK-W-21-2600	650.3	652.5	2.2	6.14		UDD_4914	Underdog
including	650.3	650.6	0.3	14.2		UDD_4914	Underdog
OSK-W-21-2606	699.0	702.0	3.0	93.1	63.0	CA2_2208	Caribou
including	700.0	701.0	1.0	191	100	CA2_2208	Caribou
OSK-W-21-2609	638.0	640.0	2.0	6.33		CA2_2237	Caribou
including	638.9	639.5	0.6	16.0		CA2_2237	Caribou
OSK-W-21-2612	377.0	383.0	6.0	4.71		Z27_1102	Zone 27
OSK-W-21-2615	193.7	195.7	2.0	4.01		WFN_7009	Windfall North
OSK-W-21-2618	207.0	209.0	2.0	5.86		WFN_7009	Windfall North
OSK-W-21-2620	701.0	703.0	2.0	4.59		CAE_2547	Caribou
OSK-W-21-2622	191.4	193.4	2.0	7.29		WFN_7010	Windfall North
including	192.8	193.4	0.6	24.1		WFN_7010	Windfall North
OSK-W-21-2627	57.0	59.0	2.0	20.6		WFN_7003	Windfall North
including	57.6	58.6	1.0	39.9		WFN_7003	Windfall North
WST-21-0649	541.0	543.0	2.0	21.8	16.7	LX4_3450	Lynx 4
including	541.7	542.0	0.3	134	100	LX4_3450	Lynx 4
WST-21-0784	265.0	267.1	2.1	3.52		TLX_3161	Triple Lynx
including	266.3	266.8	0.5	14.0		TLX_3161	Triple Lynx
WST-21-0855B	562.7	566.6	3.9	14.0		LX4_3440	Lynx 4
including	566.3	566.6	0.3	58.7		LX4_3440	Lynx 4
WST-21-0859	277.3	280.2	2.9	17.5		LSW_3508	Lynx SW
including	278.3	278.7	0.4	66.7		LSW_3508	Lynx SW
	347.0	349.0	2.0	29.6	19.5	TLX_3166	Triple Lynx
including	347.9	348.2	0.3	167	100	TLX_3166	Triple Lynx
WST-21-0868A	196.0	198.1	2.1	44.6		TLX_3161	Triple Lynx
	302.0	305.0	3.0	6.14		TLX_3182	Triple Lynx
	336.0	338.0	2.0	5.50		TLX_3131	Triple Lynx
WST-21-0877	79.6	81.6	2.0	4.51		LXM_3339	Lynx
including	80.9	81.6	0.7	12.6		LXM_3339	Lynx
WST-21-0879	669.5	671.5	2.0	19.6		LX4_3412	Lynx 4
including	669.5	670.5	1.0	39.1		LX4_3412	Lynx 4
WST-21-0899C	213.1	215.3	2.2	5.80		LSW_3507	Lynx SW
	313.1	315.4	2.3	6.04		LSW_3556	Lynx SW
WST-21-0901	313.0	315.0	2.0	7.51		LHW_3215	Lynx HW
WST-21-0906A	357.5	359.7	2.2	4.42		LSW_3556	Lynx SW
WST-21-0910A	396.3	399.0	2.7	11.1		LSW_3556	Lynx SW
including	397.9	398.6	0.7	30.1		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. CA1 and CA2 = Caribou, LX4 = Lynx 4, LHW = Lynx Hanging Wall, LXM = Lynx Main, LSW = Lynx Southwest, TLX = Triple Lynx, UDD = Underdog, WNF = Windfall North 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-21-1871-W1	844.0	846.0	2.0	5.55		UDD	Underdog
OSK-W-21-1949-W11	1028.1	1030.2	2.1	17.6		LX4	Lynx 4
including	1029.2	1029.6	0.4	72.0		LX4	Lynx 4
	1068.0	1071.4	3.4	3.66		LX4	Lynx 4
	1101.7	1103.8	2.1	4.73		LX4	Lynx 4
including	1102.4	1102.7	0.3	22.9		LX4	Lynx 4
OSK-W-21-2287-W9	943.6	945.6	2.0	4.57		LX4	Lynx 4
including	943.6	944.1	0.5	18.2		LX4	Lynx 4
OSK-W-21-2416-W6	986.0	988.3	2.3	9.75		TLX	Triple Lynx
OSK-W-21-2479-W11	470.7	472.8	2.1	8.28		Z27	Zone 27
including	470.7	471.1	0.4	27.5		Z27	Zone 27
	773.0	775.2	2.2	5.95		UDD	Underdog
	879.7	882.0	2.3	6.37		UDD	Underdog
including	879.7	880.4	0.7	20.5		UDD	Underdog
OSK-W-21-2522-W4	754.0	756.2	2.2	6.14		Lynx	Lynx
OSK-W-21-2532-W3	691.9	694.0	2.1	12.6		UDD	Underdog
including	691.9	692.8	0.9	28.7		UDD	Underdog
	1089.0	1091.0	2.0	15.0		UDD	Underdog
including	1089.4	1090.0	0.6	37.7		UDD	Underdog
OSK-W-21-2540-W4	978.7	983.6	4.9	28.6		TLX	Triple Lynx
including	983.0	983.6	0.6	74.9		TLX	Triple Lynx
OSK-W-21-2540-W5	936.0	940.8	4.8	11.0		TLX	Triple Lynx
OSK-W-21-2540-W6	931.0	933.2	2.2	9.62		TLX	Triple Lynx
OSK-W-21-2548	235.5	238.5	3.0	3.70		BCT	Bobcat
	252.3	254.5	2.2	3.64		BCT	Bobcat
	358.0	360.1	2.1	4.19		BCT	Bobcat
OSK-W-21-2578	376.8	380.3	3.5	10.6		Z27	Zone 27
	691.1	693.2	2.1	10.8		UDD	Underdog
including	692.6	692.9	0.3	67.0		UDD	Underdog
OSK-W-21-2578-W2	590.0	592.0	2.0	7.84		UDD	Underdog
including	590.0	590.8	0.8	19.0		UDD	Underdog
	706.0	709.2	3.2	6.00		UDD	Underdog
	917.9	920.1	2.2	4.10		UDD	Underdog
including	919.3	919.6	0.3	27.8		UDD	Underdog
OSK-W-21-2587	978.4	989.0	10.6	17.6	17.6	TLX	Triple Lynx
including	982.3	983.0	0.7	101	100
and	983.0	983.7	0.7	77.2
	1054.0	1056.0	2.0	5.53		TLX	Triple Lynx
	1060.0	1062.0	2.0	9.86		TLX	Triple Lynx
including	1061.0	1062.0	1.0	18.3		TLX	Triple Lynx
OSK-W-21-2593	696.4	698.5	2.1	7.44		LX4	Lynx 4
including	696.4	697.0	0.6	17.9		LX4	Lynx 4
OSK-W-21-2595	343.7	346.3	2.6	12.0		CAE	Caribou
including	345.9	346.3	0.4	52.1		CAE	Caribou
	456.0	458.0	2.0	5.39		CAE	Caribou
including	457.2	457.6	0.4	26.4		CAE	Caribou
	527.7	530.1	2.4	8.50		CAE	Caribou
including	528.1	528.7	0.6	24.9		CAE	Caribou
	559.0	561.0	2.0	5.68		CAE	Caribou
including	559.3	559.9	0.6	16.2		CAE	Caribou
	568.8	571.3	2.5	7.32		CAE	Caribou
including	570.9	571.3	0.4	17.5		CAE	Caribou
	646.5	648.5	2.0	9.53		CAE	Caribou
including	646.5	647.0	0.5	36.0		CAE	Caribou
	651.0	653.2	2.2	24.7		CAE	Caribou
including	652.7	653.2	0.5	98.5		CAE	Caribou
OSK-W-21-2606	581.0	583.7	2.7	5.99		CAE	Caribou
including	583.1	583.7	0.6	26.8		CAE	Caribou
OSK-W-21-2609	646.3	648.4	2.1	25.6		CA2	Caribou
including	646.8	647.4	0.6	84.3		CA2	Caribou
OSK-W-21-2610	534.7	536.7	2.0	4.57		CAE	Caribou
OSK-W-21-2612	301.7	303.8	2.1	13.2		Z27	Zone 27
	309.0	311.0	2.0	7.35		Z27	Zone 27
OSK-W-21-2616	208.3	210.3	2.0	4.01		WFN	Windfall North
OSK-W-21-2623	170.0	172.0	2.0	5.36		WFN	Windfall North
	195.0	197.5	2.5	4.86		WFN	Windfall North
including	196.7	197.5	0.8	13.8		WFN	Windfall North
OSK-W-21-2624	18.0	20.0	2.0	10.8		WFN	Windfall North
WST-21-0771C	285.2	287.6	2.4	4.46		LSW	Lynx SW
WST-21-0855B	505.5	507.8	2.3	13.0		LX4	Lynx 4
including	505.5	506.2	0.7	30.8		LX4	Lynx 4
WST-21-0857A	38.0	40.4	2.4	18.4		LXM	Lynx
including	39.4	40.0	0.6	66.3		LXM	Lynx
	363.2	370.0	6.8	15.4	14.8	TLX	Triple Lynx
including	363.9	364.6	0.7	106	100	TLX	Triple Lynx
	463.2	465.3	2.1	4.46		TLX	Triple Lynx
including	464.4	465.3	0.9	8.32		TLX	Triple Lynx
WST-21-0860	245.9	248.1	2.2	5.87		TLX	Triple Lynx
including	246.5	247.0	0.5	24.4		TLX	Triple Lynx
WST-21-0863	388.0	390.0	2.0	8.66		TLX	Triple Lynx
WST-21-0868A	228.0	231.0	3.0	4.31		TLX	Triple Lynx
	234.0	236.5	2.5	5.34		TLX	Triple Lynx
	241.5	243.5	2.0	5.85		TLX	Triple Lynx
	373.6	375.9	2.3	5.88		TLX	Triple Lynx
	559.2	561.5	2.3	7.11		LX4	Lynx 4
WST-21-0877	307.7	309.7	2.0	221	15.1	LSW	Lynx SW
including	309.1	309.4	0.3	1475	100	LSW	Lynx SW
WST-21-0885B	148.5	150.5	2.0	6.49		LSW	Lynx SW
including	149.5	150.5	1.0	13.0		LSW	Lynx SW
	296.5	300.5	4.0	12.8		LSW	Lynx SW
WST-21-0886	100.6	102.7	2.1	11.8		BCT	Bobcat
including	101.7	102.4	0.7	30.5		BCT	Bobcat
WST-21-0898	391.7	394.7	3.0	28.2		TLX	Triple Lynx
including	392.8	394.0	1.2	61.9		TLX	Triple Lynx
WST-21-0899B	164.9	167.0	2.1	6.35		LSW	Lynx SW
	220.2	225.3	5.1	10.2		LSW	Lynx SW
including	220.2	221.0	0.8	25.8		LSW	Lynx SW
WST-21-0899C	372.0	374.0	2.0	8.81		LSW	Lynx SW
including	373.2	373.6	0.4	43.7		LSW	Lynx SW
WST-21-0910A	97.2	99.3	2.1	4.04		BCT	Bobcat
including	98.1	98.7	0.6	13.9		BCT	Bobcat
	169.5	171.5	2.0	10.3		LSW	Lynx SW
including	171.0	171.5	0.5	39.0		LSW	Lynx SW
	290.0	292.0	2.0	21.2		LSW	Lynx SW
including	290.3	291.0	0.7	55.9		LSW	Lynx SW

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

Drill hole location

Hole Number	Azimuth (°)	Dip (°)	Length (m)	UTM E	UTM N	Elevation	Section
OSK-W-21-1871-W1	331	-56	1119	452496	5434397	402	2475
OSK-W-21-1949-W11	105	-57	1314	453440	5435479	401	3825
OSK-W-21-1963-W7	123	-58	1431	453761	5435816	401	4275
OSK-W-21-1963-W8	123	-58	1452	453761	5435816	401	4275
OSK-W-21-2287-W7	116	-53	1320	453607	5435714	404	4075
OSK-W-21-2287-W9	116	-53	1329	453607	5435714	404	4075
OSK-W-21-2400-W1	336	-53	861	452878	5434419	401	2825
OSK-W-21-2416-W6	123	-54	990	453169	5435624	412	3650
OSK-W-21-2416-W7	123	-54	1104	453169	5435624	412	3650
OSK-W-21-2479-W10	344	-55	807	452315	5434420	399	2325
OSK-W-21-2479-W11	344	-55	1005	452315	5434420	399	2325
OSK-W-21-2522-W4	128	-54	1208	453450	5435592	411	3900
OSK-W-21-2531-W3	344	-62	1329	452566	5434415	403	2550
OSK-W-21-2531-W4	344	-62	1203	452566	5434415	403	2550
OSK-W-21-2532-W3	341	-60	1191	452478	5434430	401	2475
OSK-W-21-2537-W3	114	-54	1024	452981	5435549	420	3450
OSK-W-21-2540-W4	117	-60	1297	453465	5435640	410	3925
OSK-W-21-2540-W5	117	-60	1311	453465	5435640	410	3925
OSK-W-21-2540-W6	117	-60	1541	453465	5435640	410	3925
OSK-W-21-2548	331	-57	774	452832	5434545	398	2850
OSK-W-21-2551-W4	120	-55	1026	453622	5435635	405	4050
OSK-W-21-2578	350	-53	942	452178	5434397	399	2200
OSK-W-21-2578-W2	350	-53	924	452178	5434397	399	2200
OSK-W-21-2587	127	-59	1278	453350	5435673	418	3850
OSK-W-21-2589-W2	130	-49	969	452960	5435539	420	3425
OSK-W-21-2593	18	-76	833	454135	5435058	397	4225
OSK-W-21-2595	150	-60	742	452830	5435324	414	3225
OSK-W-21-2600	329	-50	789	452470	5434626	403	2550
OSK-W-21-2606	325	-61	774	452786	5434526	398	2800
OSK-W-21-2609	338	-62	711	452683	5434351	402	2625
OSK-W-21-2610	153	-62	684	452831	5435324	414	3225
OSK-W-21-2612	333	-51	717	452391	5434638	402	2500
OSK-W-21-2615	338	-60	258	452248	5435150	412	2625
OSK-W-21-2616	341	-56	264	452279	5435163	411	2650
OSK-W-21-2618	330	-56	248	452279	5435162	411	2650
OSK-W-21-2620	145	-59	723	452769	5435312	406	3150
OSK-W-21-2622	328	-63	249	452247	5435150	412	2625
OSK-W-21-2623	336	-50	279	452278	5435162	411	2650
OSK-W-21-2624	351	-47	93	452186	5435122	405	2550
OSK-W-21-2627	155	-45	105	452196	5435179	405	2600
WST-21-0649	136	-47	790	453258	5435211	98	3525
WST-21-0771C	127	-52	357	452954	5435003	252	3175
WST-21-0784	132	-66	361	453507	5435327	-7	3800
WST-21-0855B	118	-45	751	453507	5435333	-48	3800
WST-21-0857A	141	-51	592	453322	5435236	54	3600
WST-21-0859	133	-66	499	453105	5435067	231	3325
WST-21-0860	126	-60	304	453508	5435328	-7	3800
WST-21-0863	135	-64	403	453508	5435327	-7	3800
WST-21-0868A	130	-44	922	453374	5435296	-26	3675
WST-21-0877	158	-60	490	453105	5435065	231	3325
WST-21-0879	139	-44	724	453258	5435209	96	3525
WST-21-0885B	145	-53	377	452954	5435003	253	3175
WST-21-0886	128	-51	375	452954	5435004	253	3175
WST-21-0898	141	-61	402	453508	5435327	-7	3800
WST-21-0899B	134	-60	287	452955	5435004	253	3175
WST-21-0899C	139	-58	434	452955	5435004	252	3175
WST-21-0901	116	-18	340	453462	5435327	32	3775
WST-21-0906A	133	-58	381	453105	5435066	231	3325
WST-21-0910A	143	-63	438	452954	5435004	252	3175

Bobcat

Caribou Zone

Lynx Zone

Underdog

Zone 27

Windfall North

Mineralization is hosted in sheared andesites and most commonly occurs in gold-bearing quartz veins with trace to 10% pyrite, traces of sphalerite and chalcopyrite, and local visible gold. Mineralization is hosted in a silica-carbonate-sericite alteration envelope and is constrained within shear zones with pervasive sericite-carbonate ± fuchsite ± silica alteration.

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 20211202

Long Section expan EN 20211202

PR_EN_20211202_Surface

PR_EN_20211202_UG

OSISKO MINING ANNOUNCES $154 MILLION CONVERTIBLE DEBENTURE PLACEMENT WITH NORTHERN STAR RESOURCES LIMITED

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

Parties To Negotiate Terms for Joint-Venture on Osisko’s Windfall Project

Toronto, Ontario (November 30, 2021) – Osisko Mining Inc. (TSX:OSK) (“Osisko“) announces that it has signed an agreement for a private placement of $154 million in a convertible senior unsecured debenture due December 1, 2025 (the “Debentures“) with Northern Star Resources Limited (“Northern Star“). The Debenture bears interest at a rate of 4.75% per annum payable semi-annually in arrears, which may be accrued at the option of Northern Star. In addition, Osisko and Northern Star have agreed to negotiate, on an exclusive basis, the terms of an earn-in and joint-venture on up to a 50% interest in Osisko’s Windfall Project.

The Debenture may be converted by Northern Star at any time after the first anniversary of closing, subject to acceleration in the event of a change of control, at a conversion price (the “Conversion Price“) equal to $4.00 per common share of Osisko (“Common Shares“). Upon entering into the earn-in and joint venture agreement, Northern Star may convert the Debenture into an interest in the property at a conversion premium of 125%.

In addition, the Debenture may be redeemed by Osisko at any time after the second anniversary of closing for cash or Common Shares (provided that the volume weighted average trading price of the Common Shares are not less than 125% of the Conversion Price for the twenty consecutive trading days ending five days prior to the notice of redemption). The Debenture is subject to standard anti-dilution, events of default and early payment penalty provisions. In the event of an announced change of control transaction, the Debenture may be accelerated and converted into Common Shares at the Conversion Price or a proportionate interest in the Windfall Project.

John Burzynski, Chairman and Chief Executive Officer of Osisko, commented: “We are pleased to announce today’s investment agreement and Northern Star’s intention to negotiate an earn-in joint-venture partnership on our Windfall Project. The potential of joining forces with Northern Star, a well-respected gold producer with a depth of experience in mining underground high-grade deposits similar to the Windfall Project, would help de-risk the remaining work ahead to bring the Windfall Project to successful production. We are confident that, subject to reaching an agreement with Northern Star on the earn-in joint-venture terms, they will be a very strong partner in assuring our development plans for the Windfall Project. Going forward, Osisko shareholders can be confident that there should be no significant shareholder dilution needed to successfully bring the Windfall Project to production.”

The net proceeds of the Debenture will be used for the advancement of Osisko’s Windfall Project and for general corporate purposes. The Debenture and any Common Shares issuable upon the conversion of the Debenture, will be subject to a hold period expiring four months and one day from the date hereof.

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 the Urban Barry area and nearby Quévillon area (over 2,600 square kilometres).

Cautionary Note Regarding Forward-Looking Information

This news release contains “forward-looking information” within the meaning of applicable Canadian securities legislation based on expectations, estimates and projections as at the date of this news release. Forward-looking information involves risks, uncertainties and other factors that could cause actual events, results, performance, prospects and opportunities to differ materially from those expressed or implied by such forward-looking information. Forward-looking information in this news release includes, but is not limited to, the use of proceeds from the sale of Debentures; the ability of Osisko to complete the negotiation and enter into the earn-in and joint venture agreement on terms acceptable to it; the ability of Osisko to fund the repayment of the Debentures; objectives, goals or future plans; statements regarding exploration results and exploration plans. Factors that could cause actual results to differ materially from such forward-looking information include, but are not limited to, successful negotiation of documents; capital and operating costs varying significantly from estimates; the preliminary nature of metallurgical test results; delays in obtaining or failures to obtain required governmental, environmental or other project approvals; uncertainties relating to the availability and costs of financing needed in the future; changes in equity markets; inflation; fluctuations in commodity prices; delays in the development of projects; the other risks involved in the mineral exploration and development industry; and those risks set out in Osisko’s public disclosure record on SEDAR (www.sedar.com) under Osisko’s issuer profile. Although Osisko believes that the assumptions and factors used in preparing the forward-looking information in this news release are reasonable, undue reliance should not be placed on such information, which only applies as of the date of this news release, and no assurance can be given that such events will occur in the disclosed time frames or at all. Osisko disclaims any intention or obligation to update or revise any forward-looking information, whether as a result of new information, future events or otherwise, other than as required by law.

For further information on Osisko please contact:

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

OSISKO DRILLING RETURNS 319 g/t Au OVER 10.5 METRES IN LYNX

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

(Toronto, November 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.

Significant new analytical results presented below include 54 intercepts in 14 drill holes (7 from surface, 7 from underground) and 11 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 main infill drill campaign at Windfall, with the objective of converting inferred resources into measured and indicated resources, has been successfully completed with the continued intersection of high-grade intervals as illustrated by today’s headline hole. Selective expansion drilling continues to successfully extend previously defined zones and define new ones. Both programs are in support of the mineral resource estimate update, expected to be completed early in the New Year. We have recently reduced our drill count from 35 rigs to 15 rigs with the completion of the infill program, but selective infill drilling will continue throughout the winter, as well as an expanded focus on exploration drilling in the vicinity of Windfall.”

Selected high-grade intercepts include: 319 g/t Au over 10.5 metres in OSK-W-21-2287-W6; 124 g/t Au over 4.3 metres, 89.2 g/t Au over 3.5 metres and 133 g/t Au over 2.3 metres in OSK-W-21-2547-W1; 143 g/t Au over 2.2 metres in OSK-W-21-2503-W3; 48.5 g/t Au over 3.2 metres in OSK-W-21-2552; 62.5 g/t Au over 2.2 metres in WST-21-0881A; 10.7 g/t Au over 11.6 metres in OSK-W-21-2537-W4; 37.3 g/t Au over 3.2 metres in OSK-W-21-1882-W7 and 32.1 g/t Au over 3.5 metres in WST-21-0812. 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-W7	795.1	797.3	2.2	15.0		UDD_4100	Underdog
including	795.9	796.3	0.4	49.2		UDD_4100	Underdog
	799.0	802.2	3.2	37.3	17.5	UDD_4100	Underdog
including	801.9	802.2	0.3	312	100	UDD_4100	Underdog
OSK-W-21-1882-W8	749.7	752.0	2.3	4.38		UDD_4121	Underdog
including	750.6	751.2	0.6	14.8		UDD_4121	Underdog
	829.5	831.5	2.0	15.1		UDD_4100	Underdog
including	831.2	831.5	0.3	94.2		UDD_4100	Underdog
OSK-W-21-1949-W9	1063.0	1065.0	2.0	28.5		LX4_3430	Lynx 4
including	1063.0	1063.9	0.9	59.3		LX4_3430	Lynx 4
OSK-W-21-1958-W4	978.4	982.3	3.9	17.7		LX4_3431	Lynx 4
OSK-W-21-2287-W6	1259.2	1269.7	10.5	319	32.5	LX4_3449	Lynx 4
including	1259.2	1260.4	1.2	2550	100	LX4_3449	Lynx 4
OSK-W-21-2503-W3	1111.8	1114.0	2.2	143	61.3	TLX_3172	Triple Lynx
including	1111.8	1112.1	0.3	316	100	TLX_3172	Triple Lynx
	1117.0	1119.0	2.0	4.55		TLX_3172	Triple Lynx
OSK-W-21-2532-W2	963.0	965.5	2.5	4.37		UDD_4515	Underdog
including	963.4	963.8	0.4	22.9		UDD_4515	Underdog
	976.0	978.0	2.0	8.96		UDD_4511	Underdog
including	976.3	976.6	0.3	53.8		UDD_4511	Underdog
OSK-W-21-2537-W4	920.7	922.8	2.1	13.6		TLX_3161	Triple Lynx
including	920.7	921.0	0.3	62.9		TLX_3161	Triple Lynx
	928.0	932.0	4.0	12.8		TLX_3161	Triple Lynx
including	928.0	928.3	0.3	90.9		TLX_3161	Triple Lynx
	935.4	947.0	11.6	10.7		TLX_3161	Triple Lynx
including	935.4	935.8	0.4	44.1
and	940.0	941.0	1.0	41.0
OSK-W-21-2547-W1	698.0	700.0	2.0	5.97		TLX_3171	Triple Lynx
including	699.2	699.5	0.3	37.9		TLX_3171	Triple Lynx
	723.0	725.0	2.0	4.66		TLX_3184	Triple Lynx
	747.0	749.3	2.3	133	13.3	TLX_3184	Triple Lynx
including	749.0	749.3	0.3	1020	100	TLX_3184	Triple Lynx
OSK-W-21-2551-W3	886.0	888.2	2.2	20.7		LX4_3437	Lynx 4
including	886.8	887.3	0.5	88.3		LX4_3437	Lynx 4
OSK-W-21-2552	116.0	118.4	2.4	5.48		CA1_2504	Caribou
	153.2	156.4	3.2	48.5	14.4	CA1_2518	Caribou
including	153.2	153.5	0.3	464	100	CA1_2518	Caribou
	339.7	343.5	3.8	19.0		Z27_1123	Zone 27
including	342.1	342.5	0.4	42.7		Z27_1123	Zone 27
	521.7	523.8	2.1	8.37		MAL_5215	Mallard
including	521.7	522.0	0.3	54.9		MAL_5215	Mallard
OSK-W-21-2578-W1	862.0	864.0	2.0	11.8		UDD_4910	Underdog
including	862.5	863.2	0.7	33.2		UDD_4910	Underdog
OSK-W-21-2581	687.0	689.0	2.0	4.60		UDD_4103	Underdog
OSK-W-21-2585	134.6	137.0	2.4	39.2	27.0	F51_6008	F-51
including	135.7	136.2	0.5	159	100	F51_6008	F-51
OSK-W-21-2586	647.4	651.0	3.6	6.73		CA2_2241	Caribou
including	647.4	648.0	0.6	14.1		CA2_2241	Caribou
	657.3	660.0	2.7	4.15		CA2_2214	Caribou
OSK-W-21-2604	50.5	52.8	2.3	12.1		WFN_7003	Windfall North
including	51.6	52.0	0.4	27.9		WFN_7003	Windfall North
	105.0	107.0	2.0	8.72		WFN_7008	Windfall North
including	106.0	107.0	1.0	17.4		WFN_7008	Windfall North
WST-21-0812	319.5	323.0	3.5	32.1		LSW_3502	Lynx SW
WST-21-0862C	339.0	341.5	2.5	5.75		LSW_3556	Lynx SW
including	339.8	340.1	0.3	30.8		LSW_3556	Lynx SW
WST-21-0865C	243.0	245.1	2.1	18.6	14.4	LHW_3221	Lynx HW
including	244.8	245.1	0.3	129	100	LHW_3221	Lynx HW
	273.0	275.3	2.3	6.32		LHW_3215	Lynx HW
including	273.5	274.3	0.8	17.8		LHW_3215	Lynx HW
	277.0	279.1	2.1	9.83		LHW_3215	Lynx HW
including	278.1	279.1	1.0	20.6		LHW_3215	Lynx HW
WST-21-0867B	304.5	306.7	2.2	8.34		LHW_3201	Lynx HW
including	304.8	305.2	0.4	45.2		LHW_3201	Lynx HW
WST-21-0881A	76.0	78.2	2.2	62.5	14.4	LXM_3361	Lynx
including	76.6	76.9	0.3	453	100	LXM_3361	Lynx

Notes: True widths are estimated at 55 – 80% of the reported core length interval. See “Quality Control and Reporting Protocols” below. CA1 and CA2 = Caribou, LX4 = Lynx 4, LHW = Lynx Hanging Wall, LSW = Lynx Southwest, LXM = Lynx Main, MAL = Mallard, TLX = Triple Lynx, UDD = Underdog, WNF = Windfall North, 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-21-1949-W9	1080.0	1082.0	2.0	20.8		Lynx 4	Lynx
OSK-W-21-2547-W1	786.0	788.0	2.0	6.19		Triple Lynx	Triple Lynx
	800.7	805.0	4.3	124	27.1	Triple Lynx	Triple Lynx
including	802.9	803.3	0.4	1145	100	Triple Lynx	Triple Lynx
	807.0	810.0	3.0	5.51		Triple Lynx	Triple Lynx
	813.8	817.3	3.5	89.2	20.0	Triple Lynx	Triple Lynx
including	813.8	814.1	0.3	908	100	Triple Lynx	Triple Lynx
OSK-W-21-2552	217.4	219.6	2.2	3.93		Caribou	Caribou
including	219.0	219.6	0.6	13.2		Caribou	Caribou
	421.9	424.2	2.3	5.47		Z27	Zone 27
OSK-W-21-2572	339.0	341.0	2.0	7.39		Bobcat	Bobcat
including	339.7	340.2	0.5	27.9		Bobcat	Bobcat
OSK-W-21-2578-W1	653.3	655.3	2.0	10.2		UDD	Underdog
including	653.3	653.7	0.4	50.3		UDD	Underdog
	698.0	700.3	2.3	12.2		Underdog	Underdog
	732.8	736.2	3.4	3.56		Underdog	Underdog
including	732.8	733.1	0.3	18.3
and	735.9	736.2	0.3	14.4
OSK-W-21-2598	125.0	127.0	2.0	4.15		WFN	Windfall North
including	126.1	126.4	0.3	26.0		WFN	Windfall North
WST-21-0862C	92.5	94.7	2.2	12.1		BCT	Bobcat
	349.0	351.2	2.2	4.21		Lynx SW	Lynx SW
including	350.1	350.7	0.6	8.89		Lynx SW	Lynx SW
WST-21-0881A	274.4	276.6	2.2	5.93		Lynx SW	Lynx SW
including	275.5	275.9	0.4	20.5		Lynx SW	Lynx SW
WST-21-0882A	153.0	155.3	2.3	5.74		Lynx SW	Lynx SW
including	153.0	153.6	0.6	12.8		Lynx SW	Lynx SW
	230.0	232.0	2.0	4.35		Lynx SW	Lynx SW
including	231.4	232.0	0.6	14.2		Lynx SW	Lynx SW
WST-21-0884	274.0	276.1	2.1	25.1		TLX_3161	Triple Lynx
including	274.5	275.5	1.0	47.2		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. BCT = Bobcat, SW = Southwest, TLX = Triple Lynx, UDD = Underdog, WFN = Windfall North and Z27 = Zone 27.

Drill hole location

Hole Number	Azimuth (°)	Dip (°)	Length (m)	UTM E	UTM N	Elevation	Section
OSK-W-21-1882-W7	328	-58	807	452469	5434405	400	2450
OSK-W-21-1882-W8	328	-58	879	452469	5434405	400	2450
OSK-W-21-1949-W9	105	-57	1140	453440	5435479	401	3825
OSK-W-21-1958-W4	111	-52	1066	453430	5435572	411	3850
OSK-W-21-2287-W6	116	-53	1443	453607	5435714	404	4075
OSK-W-21-2503-W3	126	-58	1257	453333	5435641	413	3800
OSK-W-21-2532-W2	341	-60	1145	452480	5434428	401	2475
OSK-W-21-2537-W4	114	-54	947	452981	5435550	420	3450
OSK-W-21-2547-W1	140	-55	790	452886	5435484	409	3350
OSK-W-21-2551-W3	120	-55	954	453622	5435635	405	4050
OSK-W-21-2552	335	-52	684	452404	5434674	400	2525
OSK-W-21-2572	146	-50	777	452886	5435484	409	3350
OSK-W-21-2578-W1	350	-53	918	452178	5434397	399	2200
OSK-W-21-2581	333	-49	755	452469	5434627	403	2550
OSK-W-21-2585	169	-62	180	453426	5435858	405	4000
OSK-W-21-2586	334	-60	706	452682	5434351	402	2625
OSK-W-21-2598	343	-46	210	452118	5435098	406	2475
OSK-W-21-2604	353	-48	270	452197	5435106	406	2550
WST-21-0812	149	-51	370	452954	5435003	253	3175
WST-21-0862C	147	-56	405	452954	5435003	252	3175
WST-21-0865C	115	-04	304	453462	5435327	33	3775
WST-21-0867B	110	-13	346	453462	5435327	33	3775
WST-21-0881A	148	-57	457	453105	5435065	231	3325
WST-21-0882A	120	-60	350	452955	5435003	253	3175
WST-21-0884	123	-66	322	453509	5435328	-7	3800

Lynx Zones

Bobcat

Zone 27

Caribou Zone

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.

Underdog

F-Zones

Windfall North

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 expan EN 20211117

Long Section infill EN 20211117

PR_EN_20211117_Surface

PR_EN_20211117_UG

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

Posted on October 5, 2021November 8, 2023 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

Underdog

Zone 27

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 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, 2021November 8, 2023 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

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 20210923

Long Section Expan EN 20210923

PR_EN_20210923_Surface

PR_EN_20210923_UG

OSISKO WINDFALL DRILLING RETURNS MORE HIGH-GRADE

Posted on September 7, 2021November 8, 2023 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 ADDS HIGH-GRADE ACROSS WINDFALL DEPOSIT

Posted on August 17, 2021November 8, 2023 by Jade Vezina

388 g/t Au over 2.2 Metres Lynx Main

135 g/t Au over 6.3 Metres in Lynx 4

(Toronto, August 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.

Significant new analytical results presented below include 39 intercepts in 17 drill holes (11 from surface, 6 from underground) and 10 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: “This week’s drill results demonstrate once again the strong continuity of the Windfall mineralization with high-grade intercepts in multiple different zones across the deposit, namely Lynx Main, Lynx 4, and Underdog. Expansion results continue to confirm that many zones remain open to growth, as demonstrated by hole OSK-W-21-2540-W1, which extends Triple Lynx 3163 wireframe 80 meters to the east.”

Selected high-grade intercepts include: 388 g/t Au over 2.2 metres in WST-21-0823; 135 g/t Au over 6.3 metres and 24.3 g/t Au over 5.2 metres in WST-21-0828; 187 g/t Au over 2.5 metres in WST-21-0763A; 113 g/t Au over 3.7 metres in OSK-W-21-2479-W5; 130 g/t Au over 2.9 metres and 38.8 g/t Au over 3.2 metres in OSK-W-21-2287-W3; 61.5 g/t Au over 3.0 metres in OSK-W-21-2544; and 41.5 g/t Au over 4.4 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-17-1260	1067.4	1073.0	5.6	9.38		UDD_4123	Underdog
including	1072.0	1073.0	1.0	23.8		UDD_4123	Underdog
OSK-W-20-2283-W5	826.0	828.0	2.0	16.7	16.5	TLX_3184	Triple Lynx
including	826.8	827.1	0.3	101	100	TLX_3184	Triple Lynx
OSK-W-21-1432-W4	938.0	940.0	2.0	7.17		LX4_3437	Lynx 4
including	938.5	939.0	0.5	26.6		LX4_3437	Lynx 4
OSK-W-21-1827-W5	510.0	512.4	2.4	17.3		CA2_2231	Caribou
including	511.1	511.7	0.6	60.9		CA2_2231	Caribou
OSK-W-21-2287-W3	1229.8	1233.0	3.2	38.8		LX4_3449	Lynx 4
including	1232.0	1233.0	1.0	98.5		LX4_3449	Lynx 4
	1243.6	1246.5	2.9	130	73.1	LX4_3449	Lynx 4
including	1245.3	1245.6	0.3	324	100
and	1245.6	1245.9	0.3	258	100
OSK-W-21-2467	564.0	566.0	2.0	7.44		CA2_2232	Caribou
	568.0	570.2	2.2	51.2	47.9	CA2_2232	Caribou
including	568.5	569.2	0.7	111	100	CA2_2232	Caribou
OSK-W-21-2470-W6	1057.0	1059.5	2.5	16.4		TLX_3170	Triple Lynx
including	1058.0	1058.4	0.4	42.3		TLX_3170	Triple Lynx
OSK-W-21-2479-W6	775.4	777.5	2.1	5.14		UDD_4107	Underdog
OSK-W-21-2512-W1	772.0	778.0	6.0	13.8		UDD_4104	Underdog
including	772.0	773.5	1.5	38.2		UDD_4104	Underdog
OSK-W-21-2520	813.7	816.0	2.3	6.19		UDD_4121	Underdog
including	814.4	814.9	0.5	27.6		UDD_4121	Underdog
	818.6	823.0	4.4	41.5	30.8	UDD_4121	Underdog
including	818.6	818.9	0.3	257	100
including	821.0	821.8	0.8	96.7
	1089.0	1091.4	2.4	11.0		UDD_4911	Underdog
including	1089.9	1090.7	0.8	32.2		UDD_4911	Underdog
OSK-W-21-2531	1071.0	1076.0	5.0	5.83		UDD_4915	Underdog
OSK-W-21-2537	985.5	988.1	2.6	18.1		TLX_3163	Triple Lynx
including	987.5	988.1	0.6	51.9		TLX_3163	Triple Lynx
	1057.7	1059.8	2.1	13.8		TLX_3170	Triple Lynx
including	1058.9	1059.3	0.4	68.1		TLX_3170	Triple Lynx
OSK-W-21-2544	795.0	798.0	3.0	61.5	36.9	TLX_3171	Triple Lynx
including	795.0	795.8	0.8	192	100	TLX_3171	Triple Lynx
	818.0	820.0	2.0	15.0		TLX_3184	Triple Lynx
including	818.0	819.0	1.0	29.3		TLX_3184	Triple Lynx
OSK-W-21-2554	136.9	139.2	2.3	4.75		F51_6008	F-51
WST-20-0505A	49.0	51.5	2.5	9.42		LXM_3339	Lynx
including	50.2	50.8	0.6	38.8		LXM_3339	Lynx
WST-21-0763A	169.5	172.0	2.5	187	69.3	LXM_3304	Lynx
including	170.2	171.1	0.9	377	100	LXM_3304	Lynx
WST-21-0802A	390.0	392.0	2.0	19.0		LSW_3556	Lynx SW
including	390.0	390.4	0.4	59.9		LSW_3556	Lynx SW
	394.0	396.0	2.0	6.37		LSW_3556	Lynx SW
	408.0	410.0	2.0	31.8		LSW_3556	Lynx SW
including	408.8	409.6	0.8	77.8		LSW_3556	Lynx SW
WST-21-0823	165.2	167.4	2.2	388	47.4	LXM_3304	Lynx
including	165.2	165.5	0.3	2600	100	LXM_3304	Lynx
WST-21-0828	489.1	494.3	5.2	24.3	23.3	LX4_3430	Lynx 4
including	493.4	494.3	0.9	106	100	LX4_3430	Lynx 4
	520.0	526.3	6.3	135	48.5	LX4_3440	Lynx 4
including	521.6	522.9	1.3	303	100
including	525.0	526.0	1.0	380	100

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, CA2 = Caribou 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-20-2437	313.0	315.0	2.0	5.89		Caribou	Caribou
OSK-W-21-2479-W5	728.0	731.7	3.7	113	39.3	UDD	Underdog
including	731.0	731.7	0.7	488	100	UDD	Underdog
OSK-W-21-2520	935.7	943.3	7.6	13.1	12.4	UDD	Underdog
including	938.6	939.0	0.4	114	100	UDD	Underdog
OSK-W-21-2532	809.0	815.2	6.2	9.91		UDD	Underdog
including	809.0	809.5	0.5	40.4
including	812.5	813.1	0.6	35.4
OSK-W-21-2540-W1	966.0	968.3	2.3	5.05		TLX_3163	Triple Lynx
	969.9	976.3	6.4	18.1		TLX_3163	Triple Lynx
including	969.9	970.5	0.6	57.8
including	974.5	975.1	0.6	67.3
OSK-W-21-2540-W2	927.0	929.4	2.4	14.1		TLX_3163	Triple Lynx
including	927.0	927.5	0.5	55.0		TLX_3163	Triple Lynx
OSK-W-21-2544	859.9	862.0	2.1	11.2		TLX_3198	Triple Lynx
including	861.0	861.4	0.4	34.4		TLX_3198	Triple Lynx
OSK-W-21-2549	626.4	628.4	2.0	5.73		Caribou	Caribou
OSK-W-21-2559	586.0	588.0	2.0	6.70		Caribou	Caribou
including	586.0	587.0	1.0	13.2		Caribou	Caribou
WST-21-0841	286.0	288.0	2.0	12.1		LSW	Lynx SW
including	287.0	288.0	1.0	23.7		LSW	Lynx SW

Notes: True widths are estimated at 55 – 80% of the reported core length interval. See “Quality Control and Reporting Protocols” below. 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-17-1260	329	-49	1134	452865	5434568	397	2875
OSK-W-20-2283-W5	135	-50	1043	452997	5435607	425	3500
OSK-W-20-2437	329	-62	630	452597	5434393	401	2550
OSK-W-21-1432-W4	132	-55	1053	453811	5435779	400	4300
OSK-W-21-1827-W5	331	-58	1164	452506	5434390	403	2475
OSK-W-21-2287-W3	116	-53	1368	453607	5435714	404	4075
OSK-W-21-2467	331	-54	717	452685	5434474	402	2675
OSK-W-21-2470-W6	132	-59	1119	453304	5435639	415	3775
OSK-W-21-2479-W5	344	-55	978	452315	5434419	399	2325
OSK-W-21-2479-W6	344	-55	1014	452315	5434419	399	2325
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-21-2531	344	-62	1188	452566	5434415	403	2550
OSK-W-21-2532	341	-60	1107	452480	5434428	401	2475
OSK-W-21-2537	114	-54	1243	452981	5435549	420	3450
OSK-W-21-2540-W1	117	-60	1053	453465	5435640	410	3925
OSK-W-21-2540-W2	117	-60	1314	453465	5435640	410	3925
OSK-W-21-2544	128	-50	1161	452961	5435529	419	3425
OSK-W-21-2549	332	-58	723	452703	5434455	401	2675
OSK-W-21-2554	131	-57	189	453426	5435858	405	4000
OSK-W-21-2559	327	-51	589	452829	5434550	398	2850
WST-20-0505A	183	-46	331	453227	5435125	134	3475
WST-21-0763A	120	-39	567	453507	5435332	-47	3800
WST-21-0802A	149	-65	448	452953	5435003	253	3175
WST-21-0823	120	-35	545	453507	5435332	-47	3800
WST-21-0828	123	-42	645	453507	5435331	-48	3800
WST-21-0841	125	-65	438	453106	5435066	231	3325

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 EN expan 20210817

Long Section EN infill 20210817

PR_EN_20210817_UG

PR_EN_20210817_Surface

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

Posted on August 3, 2021November 8, 2023 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

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Category: Windfall

OSISKO WINDFALL DRILLING INTERSECTS MORE HIGH-GRADE

Drill hole location

OSISKO WINDFALL DRILLING INTERCEPTS WIDE HIGH-GRADE IN EXPANSION HOLES

Drill hole location

OSISKO WINDFALL DRILLING CONTINUES TO INTERCEPT HIGH-GRADE ACROSS THE WINDFALL DEPOSIT

Drill hole location

OSISKO MINING ANNOUNCES $154 MILLION CONVERTIBLE DEBENTURE PLACEMENT WITH NORTHERN STAR RESOURCES LIMITED

OSISKO DRILLING RETURNS 319 g/t Au OVER 10.5 METRES IN LYNX

Drill hole location

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 WINDFALL DRILLING RETURNS MORE HIGH-GRADE

Drill hole location

OSISKO DRILLING ADDS HIGH-GRADE ACROSS WINDFALL DEPOSIT

Drill hole location

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

Drill hole location

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