OSISKO WINDFALL INFILL DRILLING: INSERT SUPERLATIVE HERE

New Intercepts Include 108 g/t Au Over 10.5 Metres

(Toronto, January 26, 2021) Osisko Mining Inc. (OSK:TSX. “Osisko” or the “Corporation”) is pleased to provide new analytical results from the ongoing expansion and definition drill program at its 100% owned Windfall gold project located in the Abitibi greenstone belt, Urban Township, Eeyou Istchee James Bay, Québec.

Drilling is currently focused on the Lynx deposit. Osisko Chief Executive Officer John Burzynski commented: “Infill drilling at Windfall continues with more good results with respect to grade and width, particularly in the Lynx zones. Both underground and surface drills continue to infill our resources and explore open down plunge areas.”

The table below contains resource definition infill intercepts located inside the February 2020 mineral resource estimate wireframes (see Osisko news release dated February 19, 2020). Significant new analytical results are presented below and include 63 intercepts in 38 drill holes and 7 wedges.

Selected high-grade intercepts from the new results include: 108 g/t Au over 10.5 metres in OSK-W-20-2256-W7;21.7 g/t Au over 11.3 metres in OSK-W-20-2271-W3; 76.7 g/t Au over 3.0 metres in OSK-W-20-2377; 30.9 g/t Au over 4.5 metres in OSK-W-20-2292-W4; 35.1 g/ t Au over 2.8 metres in OSK-W-20-2325; and 36.5 g/t Au over 2.1 metres in OSK-W-20-2283-W3. Maps showing hole locations and full analytical results are available at www.osiskomining.com

 

Hole Number From (m) To (m) Interval (m) Au (g/t) uncut Au (g/t)         cut to 100 g/t Zone Corridor
OSK-W-20-847-W3 628.8 631.0 2.2 4.32   Caribou_2214 Caribou
including 629.5 630.0 0.5 12.9
OSK-W-20-852-W4 548.0 550.0 2.0 8.55   Caribou_2524 Caribou
OSK-W-20-2256-W7 881.0 891.5 10.5 108 30.7 Lynx_361 Triple Lynx
including 885.8 887.0 1.2 567 100
and 887.5 888.6 1.1 302 100
OSK-W-20-2271-W3 1057.6 1068.9 11.3 21.7   Lynx_330 Lynx
including 1061.8 1062.1 0.3 64.1
and 1064.0 1064.3 0.3 92.8
OSK-W-20-2283-W3 870.0 872.0 2.0 11.2   Triple Lynx Triple Lynx
including 871.1 871.5 0.4 41.8
  984.6 987.0 2.4 4.47   Triple Lynx Triple Lynx
including 985.5 986.0 0.5 20.5
  991.4 993.5 2.1 36.5   Triple Lynx Triple Lynx
including 992.0 992.8 0.8 95.7
OSK-W-20-2287 1158.9 1161.0 2.1 7.64   Lynx_346 Lynx
OSK-W-20-2292-W4 884.3 888.8 4.5 30.9 21.7 Lynx_375 Triple Lynx
including 887.3 888.0 0.7 159 100
OSK-W-20-2301 94.7 96.7 2.0 8.14   F17_6003 F-17
including 96.0 96.7 0.7 21.6
  101.2 103.6 2.4 3.54   F17_6003 F-17
including 101.2 101.7 0.5 16.9
OSK-W-20-2306 199.5 205.3 5.8 7.48   Bobcat Bobcat
including 202.3 202.8 0.5 43.8
OSK-W-20-2313-W2 979.3 981.4 2.1 8.56   Triple Lynx Triple Lynx
including 979.8 980.2 0.4 21.8
OSK-W-20-2319 210.0 212.0 2.0 4.83   Bobcat Bobcat
OSK-W-20-2325 128.0 130.8 2.8 35.1 25.6 Mallard_5200 Mallard
including 130.1 130.8 0.7 138 100
  143.6 145.8 2.2 13.1   Mallard_5213 Mallard
OSK-W-20-2326 82.0 86.0 4.0 9.47   Mallard_5213 Mallard
including 82.0 83.0 1.0 29.5
OSK-W-20-2327 94.0 96.7 2.7 14.1   Mallard_5213 Mallard
including 96.0 96.7 0.7 33.7
OSK-W-20-2328 177.0 182.5 5.5 6.50   Caribou_2527 Caribou
OSK-W-20-2330 137.7 140.0 2.3 9.57   Mallard_5213 Mallard
including 138.8 139.4 0.6 35.1
OSK-W-20-2332 191.7 194.7 3.0 6.03   Mallard_5213 Mallard
OSK-W-20-2346 892.0 894.2 2.2 12.2   Lynx_330 Lynx
including 893.5 893.8 0.3 78.5
OSK-W-20-2354 653.3 655.9 2.6 5.39   Caribou_2233 Caribou
including 654.1 654.5 0.4 19.7
OSK-W-20-2362 137.0 139.0 2.0 4.19   Bobcat Bobcat
OSK-W-20-2377 105.0 108.0 3.0 76.7 22.7 F17_6003 F-17
including 106.0 106.4 0.4 505 100
OSK-W-20-2384 644.5 646.9 2.4 26.2   Lynx_341 Lynx
including 645.3 645.9 0.6 96.5
OSK-W-20-2389 589.0 591.0 2.0 5.72   Caribou Caribou
WST-20-0011 278.8 280.8 2.0 15.5   Lynx SW Lynx SW
WST-20-0346 29.0 31.0 2.0 4.57   Mallard_5212 Mallard
WST-20-0347 270.0 272.9 2.9 3.31   Caribou_2572 Caribou
including 272.1 272.9 0.8 11.4
WST-20-0348 237.6 239.7 2.1 7.49   Caribou_2573 Caribou
  271.5 273.5 2.0 4.68   Caribou_2572 Caribou
including 272.5 272.9 0.4 22.6
WST-20-0349 293.2 296.0 2.8 3.64   Caribou_2572 Caribou
including 294.0 295.0 1.0 9.56
WST-20-0476 154.9 157.1 2.2 4.85   Caribou_2551 Caribou
including 154.9 155.6 0.7 11.9
  172.9 175.5 2.6 3.33   Caribou_2551 Caribou
WST-20-0477 151.5 154.0 2.5 5.90   Caribou_2551 Caribou
WST-20-0480B 60.0 62.0 2.0 12.3   Mallard_5211 Mallard
WST-20-0518 168.0 170.0 2.0 4.53   Z27_1102 Zone 27
WST-20-0520 63.5 66.0 2.5 5.53   Mallard_5211 Mallard
  81.5 84.0 2.5 12.3   Mallard_5211 Mallard
including 82.4 82.7 0.3 94.8
  157.0 159.3 2.3 4.53   Z27_1102 Zone 27
  352.4 354.4 2.0 11.8   Caribou_2253 Caribou
including 352.8 353.9 1.1 21.2
WST-20-0533 96.0 98.1 2.1 7.13   Lynx_304 Lynx
including 97.2 98.1 0.9 16.6
WST-20-0534 69.0 71.0 2.0 21.4   Lynx_323 Lynx
including 70.2 71.0 0.8 53.5
WST-20-0535 46.9 49.1 2.2 5.83   Lynx_303 Lynx
including 46.9 47.5 0.6 18.1
WST-20-0536 83.0 85.0 2.0 17.9   Lynx Lynx
including 83.4 83.8 0.4 84.1
WST-20-0549 11.0 13.0 2.0 12.3   Mallard_5211 Mallard
  263.0 265.0 2.0 5.39   Caribou_2518 Caribou
  269.5 271.5 2.0 3.94   Caribou_2518 Caribou
  306.0 308.0 2.0 3.26   Caribou_2521 Caribou
including 307.2 308.0 0.8 7.40
  373.9 377.0 3.1 4.60   Caribou_2542 Caribou
WST-20-0565 11.0 13.2 2.2 11.6   Mallard_5211 Mallard
including 11.6 12.4 0.8 24.0
WST-20-0566A 306.4 311.7 5.3 9.25   Caribou_2521 Caribou
including 307.3 308.3 1.0 36.2
WST-20-0568 295.9 298.0 2.1 7.62   Lynx SW Lynx SW
including 296.6 297.4 0.8 15.7
  317.0 319.0 2.0 3.94   Lynx SW Lynx SW
including 317.7 318.1 0.4 19.5
WST-20-0582 103.1 106.0 2.9 7.01   Lynx_339 Lynx
  129.5 131.5 2.0 9.97   Lynx_311 Lynx
including 130.0 131.0 1.0 19.9
WST-20-0586 99.5 101.5 2.0 6.81   Lynx_311 Lynx
  141.0 143.1 2.1 20.0   Lynx Lynx
including 142.2 142.7 0.5 79.3
  160.0 162.5 2.5 14.4   Lynx_359 Lynx
including 161.3 161.8 0.5 54.1
WST-20-0587 165.0 167.2 2.2 3.33   Lynx_304 Lynx
including 166.6 167.2 0.6 10.9
WST-20-0589 63.5 65.6 2.1 8.09   Mallard_5211 Mallard
  330.4 332.4 2.0 6.21   Caribou_2253 Caribou

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

 

Drill hole location

Hole Number Azimuth (°) Dip (°) Length (m) UTM E UTM N Elevation Section
OSK-W-20-847-W3 334 -69 649 452645 5434429 403 2625
OSK-W-20-852-W4 330 -55 873 452874 5434552 398 2875
OSK-W-20-2256-W7 125 -51 1005 453160 5435686 411 3675
OSK-W-20-2271-W3 120 -53 1235 453462 5435683 410 3950
OSK-W-20-2283-W3 135 -50 1004 452997 5435607 425 3500
OSK-W-20-2287 116 -53 1406 453607 5435714 404 4075
OSK-W-20-2292-W4 125 -54 984 453035 5435561 420 3525
OSK-W-20-2301 149 -49 140 452696 5435534 410 3200
OSK-W-20-2306 152 -55 531 452872 5435155 409 3175
OSK-W-20-2313-W2 134 -52 1047 452965 5435583 420 3450
OSK-W-20-2319 141 -50 768 452872 5435153 409 3175
OSK-W-20-2325 331 -53 171 451946 5434809 406 2200
OSK-W-20-2326 335 -50 156 451920 5434828 403 2175
OSK-W-20-2327 334 -49 132 451899 5434812 401 2150
OSK-W-20-2328 136 -56 942 452872 5435153 409 3175
OSK-W-20-2330 333 -48 156 451912 5434792 402 2150
OSK-W-20-2332 335 -49 222 452019 5434790 406 2250
OSK-W-20-2346 130 -53 1161 453397 5435557 413 3825
OSK-W-20-2354 336 -60 759 452739 5434474 401 2725
OSK-W-20-2362 350 -45 256 452719 5434777 398 2850
OSK-W-20-2377 132 -49 1326 452702 5435548 409 3225
OSK-W-20-2384 127 -52 1164 453397 5435557 413 3825
OSK-W-20-2389 328 -57 701 452689 5434635 398 2750
WST-20-0011 157 -54 451 453105 5435065 231 3325
WST-20-0346 136 -18 391 452282 5434975 264 2575
WST-20-0347 134 -14 369 452282 5434975 264 2575
WST-20-0348 127 -14 311 452282 5434976 264 2575
WST-20-0349 140 -19 378 452282 5434975 263 2575
WST-20-0476 132 -33 403 452282 5434975 263 2575
WST-20-0477 131 -30 394 452282 5434976 263 2575
WST-20-0480B 142 -52 382 452281 5434975 262 2575
WST-20-0518 135 -53 441 452282 5434975 263 2575
WST-20-0520 133 -46 388 452281 5434975 263 2575
WST-20-0533 143 -26 133 453315 5435165 124 3575
WST-20-0534 143 -32 135 453315 5435165 124 3575
WST-20-0535 143 -37 138 453315 5435165 124 3575
WST-20-0536 132 -27 135 453316 5435166 124 3575
WST-20-0549 141 -13 396 452208 5434898 249 2475
WST-20-0565 134 -12 354 452208 5434898 249 2475
WST-20-0566A 133 -16 368 452208 5434898 248 2475
WST-20-0568 158 -58 493 453104 5435065 231 3325
WST-20-0582 176 -56 144 453177 5435125 173 3425
WST-20-0586 167 -13 193 453418 5435305 69 3725
WST-20-0587 145 -43 205 453418 5435305 69 3725
WST-20-0589 147 -55 376 452281 5434975 263 2575

 

Lynx Zone

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

 

Triple Lynx

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

 

Zone 27

Mineralization is typically characterized by 5% to 50% disseminated, stringer, semi-massive or stockwork pyrite, ptygmatic tourmaline veins, quartz-tourmaline crustiform veins, and local quartz-carbonate veins. Local visible gold is observed as small specks or clusters with quartz veins. Alteration consists of moderate to strong sericite, weak to strong silica, weak chlorite and carbonate and locally weak fuchsite. Mineralization is hosted in strongly altered andesites or in or at the contact of the rhyolite.

 

Caribou Zone

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

 

F-Zone

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

 

Mallard

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

 

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. Local visible gold is associated with carbonate ± silica ± chlorite alteration. Mineralization is hosted in sheared mafic volcanics, rhyolites near faults, or at the contact with felsic porphyritic intrusions.

 

Qualified Person

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

 

Quality Control and Reporting Protocols

True width determination is estimated at 55-80% of the reported core length interval for the zone. Assays are uncut except where indicated. Intercepts occur within geological confines of major zones but have not been correlated to individual vein domains at this time. Reported intervals include minimum weighted averages of 3.0 g/t Au diluted over core lengths of at least 2.0 metres. All NQ core assays reported were obtained by either 1-kilogram screen fire assay or standard 50-gram fire-assaying-AA finish or gravimetric finish at (i) ALS Laboratories in Val d’Or, Québec, Thunder Bay, Ontario, Sudbury, Ontario or Vancouver, British Colombia, or (ii) Bureau Veritas in Timmins, Ontario. The 1-kilogram screen assay method is selected by the geologist when samples contain coarse gold or present a higher percentage of pyrite than surrounding intervals. Selected samples are also analyzed for multi-elements, including silver, using a four acids digestion -MS61 method at ALS Laboratories. Drill program design, QualityAssurance/Quality Control (“QA/QC”) and interpretation of results is performed by qualified persons employing a QA/QC program consistent with NI 43-101 and industry best practices. Standards and blanks are included with every 20 samples for QA/QC purposes by the Corporation as well as the lab. Approximately 5% of sample pulps are sent to secondary laboratories for check assay.

 

About the Windfall Gold Deposit

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

 

About Osisko Mining Inc.

Osisko is a mineral exploration company focused on the acquisition, exploration, and development of precious metal resource properties in Canada. Osisko holds a 100% interest in the high-grade Windfall gold deposit located between Val-d’Or and Chibougamau in Québec and holds a100% undivided interest in a large area of claims in the surrounding Urban Barry area and nearby Quévillon area (over 2,700 square kilometres).

 

Cautionary Note Regarding Forward-Looking Information

This news release contains “forward-looking information” within the meaning of the applicable Canadian securities legislation that is based on expectations, estimates, projections and interpretations as at the date of this news release. Any statement that involves predictions, expectations, interpretations, beliefs, plans, projections, objectives, assumptions, future events or performance (often, but not always, using phrases such as “expects”, or “does not expect”, “is expected”, “interpreted”, “management’s view”, “anticipates” or “does not anticipate”, “plans”, “budget”, “scheduled”, “forecasts”, “estimates”, “potential”, “feasibility”, “believes” or “intends” or variations of such words and phrases or stating that certain actions, events or results “may” or “could”, “would”, “might” or “will” be taken to occur or be achieved) are not statements of historical fact and may be forward-looking information and are intended to identify forward-looking information. This news release contains the forward-looking information pertaining to, among other things: the Windfall gold deposit being one of the highest-grade resource-stage gold projects in Canada and having world-class scale; the key assumptions, parameters and methods used to estimate the mineral resource estimate; the prospects, if any, of the Windfall gold deposit; the timing and ability of Osisko, if at all, to publish a feasibility study for the Windfall gold deposit; the projected capital expenditures of mining activities at the Windfall gold deposit; upgrading an inferred mineral resource to a measured mineral resource or indicated mineral resource category; future drilling at the Windfall gold deposit; the deposit remaining open along strike to the northeast and at depth; significant high-grade zones (Lynx 4, Triple Lynx) remaining open down plunge; the plunge potential of the Lynx and Underdog zones; the significance of historic exploration activities and results. Such factors include, among others, risks relating to the ability of exploration activities (including drill results) to accurately predict mineralization; errors in management’s geological modelling; the ability of Osisko to complete further exploration activities, including drilling; property and royalty interests in the Windfall gold deposit; the ability of the Corporation to obtain required approvals; the results of exploration activities; risks relating to mining activities; the global economic climate; metal prices; dilution; environmental risks; and community and non-governmental actions. Although the forward-looking information contained in this news release is based upon what management believes, or believed at the time, to be reasonable assumptions, Osisko cannot assure shareholders and prospective purchasers of securities of the Corporation that actual results will be consistent with such forward-looking information, as there may be other factors that cause results not to be as anticipated, estimated or intended, and neither Osisko nor any other person assumes responsibility for the accuracy and completeness of any such forward-looking information. Osisko does not undertake, and assumes no obligation, to update or revise any such forward-looking statements or forward-looking information contained herein to reflect new events or circumstances, except as may be required by law.

 

CONTACT INFORMATION:

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

 

OSISKO WINDFALL INFILL DRILLING

New Intercepts Include 90.5 g/t Au Over 9.7 Metres in Triple Lynx

(Toronto, January 18, 2021) Osisko Mining Inc. (OSK:TSX. “Osisko” or the “Corporation”) is pleased to provide new analytical results from the ongoing expansion and definition drill program at its 100% owned Windfall gold project located in the Abitibi greenstone belt, Urban Township, Eeyou Istchee James Bay, Québec.

Drilling is currently focused on the Lynx deposit. Osisko Chief Executive Officer John Burzynski commented: “Broken record alert, infill drilling continues to show both the continuity and high-grade nature of Lynx, consistently returning good results on grade and widths as demonstrated by today’s headline hole.  We are advancing our work on the deposit at full speed, with over 35 drills active on surface and underground.”

The table below contains resource definition infill intercepts located inside the February 2020 mineral resource estimate wireframes (see Osisko news release dated February 19, 2020). Significant new analytical results are presented below and include 46 intercepts in 17 drill holes and 14 wedges.

Selected high-grade intercepts from the new results include: 90.5 g/t Au over 9.7 meters in OSK-W-20-2252-W7; 59.5 g/t Au over 2.0 metres in OSK-W-20-2292-W5; 38.4 g/t Au over 5.5 meters in OSK-W-20-2252-W8; 37.1 g/t Au over 2.0 metres in WST-20-0542A; 32.2 g/t Au over 3.7 metres in OSK-W-20-2243-W6. Maps showing hole locations and full analytical results are available at www.osiskomining.com.

 

Hole No. From (m) To (m) Interval (m) Au (g/t) uncut Au (g/t)         cut to 100 g/t Zone Corridor
OSK-W-20-2139-W12 913.0 915.0 2.0 3.96   Lynx_361 Triple Lynx
OSK-W-20-2243-W6 925.2 928.9 3.7 32.2   Triple Lynx Triple Lynx
including 927.2 928.2 1.0 55.2
OSK-W-20-2252-W7 861.3 866.6 5.3 4.54   Triple Lynx Triple Lynx
including 866.3 866.6 0.3 16.6
871.0 876.0 5.0 5.45   Triple Lynx Triple Lynx
900.0 909.7 9.7 90.5 32.3 Lynx_371 Triple Lynx
including 904.7 905.2 0.5 324 100
and 905.6 906.2 0.6 725 100
911.2 913.3 2.1 7.79   Lynx_361 Triple Lynx
including 912.1 912.4 0.3 33.7
961.9 964.0 2.1 13.7   Lynx_363 Triple Lynx
including 962.8 963.1 0.3 75.9
987.0 989.3 2.3 3.76   Lynx_364 Triple Lynx
OSK-W-20-2252-W8 877.0 879.0 2.0 4.30   Lynx_371 Triple Lynx
921.8 924.1 2.3 23.7   Lynx_361 Triple Lynx
including 922.8 923.4 0.6 62.1
967.0 972.5 5.5 38.4   Lynx_363 Triple Lynx
including 969.6 970.6 1.0 91.7
and 970.6 971.6 1.0 69.5
OSK-W-20-2271-W2 1038.0 1040.0 2.0 3.79   Lynx_330 Lynx
OSK-W-20-2275 756.0 758.0 2.0 4.76   Triple Lynx Triple Lynx
OSK-W-20-2275-W3 864.7 867.2 2.5 3.68   Triple Lynx Triple Lynx
OSK-W-20-2275-W4 933.9 936.2 2.3 3.62   Triple Lynx Triple Lynx
OSK-W-20-2280-W3 1039.0 1041.0 2.0 4.33   Lynx_363 Triple Lynx
including 1039.6 1039.9 0.3 26.3
1045.0 1047.0 2.0 4.58   Lynx_363 Triple Lynx
including 1046.2 1046.5 0.3 28.8
OSK-W-20-2280-W4 1124.0 1129.0 5.0 7.04   Lynx_370 Triple Lynx
including 1125.3 1125.8 0.5 30.0
OSK-W-20-2280-W5 888.7 890.7 2.0 19.2   Triple Lynx Triple Lynx
including 890.1 890.7 0.6 62.3
OSK-W-20-2283-W1 826.0 828.0 2.0 3.91   Triple Lynx Triple Lynx
OSK-W-20-2283-W6 844.8 847.0 2.2 3.62   Triple Lynx Triple Lynx
including 844.8 845.3 0.5 13.0
OSK-W-20-2292-W5 1039.0 1041.0 2.0 59.5 20.3 Triple Lynx Triple Lynx
including 1039.4 1039.8 0.4 296 100
OSK-W-20-2292-W6 884.4 886.5 2.1 8.95   Triple Lynx Triple Lynx
OSK-W-20-2345 144.2 150.0 5.8 4.23   Lynx_355 Lynx
OSK-W-20-2350 112.5 115.0 2.5 22.9 20.6 Lynx_335 Lynx
including 113.5 113.9 0.4 115 100
137.0 139.0 2.0 16.3 15.8 Lynx_355 Lynx
including 137.5 137.8 0.3 103 100
OSK-W-20-2363 686.0 688.0 2.0 3.82   Lynx_365 Triple Lynx
WST-20-0011 295.4 297.6 2.2 3.66   Lynx SW Lynx
including 296.4 297.0 0.6 11.4
WST-20-0490 114.0 116.1 2.1 28.1 27.7 Lynx_339 Lynx
including 115.4 115.8 0.4 102 100
294.3 296.4 2.1 5.57   Triple Lynx Triple Lynx
including 295.7 296.1 0.4 21.7
WST-20-0498 142.0 144.0 2.0 3.38   Lynx Lynx
WST-20-0503 54.0 56.0 2.0 3.76   Lynx_311 Lynx
WST-20-0505A 280.0 282.0 2.0 3.19   Lynx SW Lynx SW
WST-20-0516 168.0 170.0 2.0 23.8   Lynx_359 Lynx
including 168.5 169.3 0.8 43.0
WST-20-0525 159.7 161.8 2.1 10.8   Lynx_359 Lynx
including 160.3 160.6 0.3 52.7
WST-20-0536 91.0 93.0 2.0 14.2   Lynx_304 Lynx
including 91.7 92.1 0.4 66.9
98.0 100.0 2.0 13.5   Lynx_304 Lynx
including 98.6 98.9 0.3 83.8
111.0 113.0 2.0 8.90   Lynx_359 Lynx
including 111.8 112.6 0.8 22.2
117.0 119.0 2.0 3.26   Lynx_359 Lynx
WST-20-0537 99.8 101.9 2.1 5.28   Lynx_304 Lynx
WST-20-0542A 46.9 49.1 2.2 30.3   Lynx_303 Lynx
including 46.9 47.6 0.7 94.0
64.3 66.3 2.0 37.1   Lynx_323 Lynx
including 65.2 66.3 1.1 63.3
WST-20-0545 95.7 98.0 2.3 18.1   Lynx_304 Lynx
124.0 127.1 3.1 10.6   Lynx_359 Lynx
including 126.6 127.1 0.5 46.2  
WST-20-0569 243.0 245.0 2.0 13.7   Lynx SW Lynx SW
including 243.8 244.2 0.4 67.3  
WST-20-0571 413.0 415.0 2.0 6.65   Lynx SW Lynx SW
including 413.0 414.0 1.0 13.3

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

SW= Southwest

 

Drill hole location

Hole Number Azimuth (°) Dip (°) Length (m) UTM E UTM N Elevation Section
OSK-W-20-2139-W12 115 -52 1038 452980 5435549 420 3450
OSK-W-20-2243-W6 122 -54 965 453086 5435526 417 3550
OSK-W-20-2252-W7 129 -54 1191 453241 5435694 415 3750
OSK-W-20-2252-W8 129 -54 1239 453241 5435694 415 3750
OSK-W-20-2271-W2 120 -53 1223 453462 5435683 410 3950
OSK-W-20-2275 127 -49 1094 452888 5435583 409 3400
OSK-W-20-2275-W3 127 -49 1050 452888 5435583 409 3400
OSK-W-20-2275-W4 127 -49 1052 452888 5435583 409 3400
OSK-W-20-2280-W3 127 -58 1191 453304 5435639 415 3775
OSK-W-20-2280-W4 127 -58 1215 453304 5435639 415 3775
OSK-W-20-2280-W5 127 -58 1134 453304 5435639 415 3775
OSK-W-20-2283-W1 135 -50 1035 452997 5435607 425 3500
OSK-W-20-2283-W6 135 -50 957 452997 5435607 425 3500
OSK-W-20-2292-W5 125 -54 1134 453035 5435561 420 3525
OSK-W-20-2292-W6 125 -54 1110 453035 5435561 420 3525
OSK-W-20-2345 336 -62 162 452828 5434780 397 2950
OSK-W-20-2350 324 -62 177 452854 5434793 397 2975
OSK-W-20-2363 139 -52 1031 452930 5435548 419 3425
WST-20-0011 157 -54 451 453105 5435065 231 3325
WST-20-0490 160 -31 430 453256 5435209 97 3525
WST-20-0498 132 -11 169 453228 5435126 136 3475
WST-20-0503 148 6 99 453105 5435065 232 3325
WST-20-0505A 183 -45 331 453227 5435125 134 3475
WST-20-0516 168 -33 195 453418 5435305 69 3725
WST-20-0525 165 -20 187 453418 5435305 69 3725
WST-20-0536 132 -27 135 453316 5435166 124 3575
WST-20-0537 132 -32 139 453316 5435166 124 3575
WST-20-0542A 156 -30 138 453315 5435165 124 3550
WST-20-0545 112 -24 148 453316 5435166 124 3575
WST-20-0569 165 -59 526 453104 5435065 231 3325
WST-20-0571 167 -55 465 453104 5435065 231 3325

 

Lynx Zone

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

 

Triple Lynx

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

 

Qualified Person

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

 

Quality Control and Reporting Protocols

True width determination is estimated at 55-80% of the reported core length interval for the zone. Assays are uncut except where indicated. Intercepts occur within geological confines of major zones but have not been correlated to individual vein domains at this time. Reported intervals include minimum weighted averages of 3.0 g/t Au diluted over core lengths of at least 2.0 metres. All NQ core assays reported were obtained by either 1-kilogram screen fire assay or standard 50-gram fire-assaying-AA finish or gravimetric finish at (i) ALS Laboratories in Val d’Or, Québec, Thunder Bay, Ontario, Sudbury, Ontario or Vancouver, British Colombia, or (ii) Bureau Veritas in Timmins, Ontario. The 1-kilogram screen assay method is selected by the geologist when samples contain coarse gold or present a higher percentage of pyrite than surrounding intervals. Selected samples are also analyzed for multi-elements, including silver, using a four acids digestion -MS61 method at ALS Laboratories. Drill program design, QualityAssurance/Quality Control (“QA/QC”) and interpretation of results is performed by qualified persons employing a QA/QC program consistent with NI 43-101 and industry best practices. Standards and blanks are included with every 20 samples for QA/QC purposes by the Corporation as well as the lab. Approximately 5% of sample pulps are sent to secondary laboratories for check assay.

 

About the Windfall Gold Deposit

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

 

About Osisko Mining Inc.

Osisko is a mineral exploration company focused on the acquisition, exploration, and development of precious metal resource properties in Canada. Osisko holds a 100% interest in the high-grade Windfall gold deposit located between Val-d’Or and Chibougamau in Québec and holds a100% undivided interest in a large area of claims in the surrounding Urban Barry area and nearby Quévillon area (over 2,700 square kilometres).

 

Cautionary Note Regarding Forward-Looking Information

This news release contains “forward-looking information” within the meaning of the applicable Canadian securities legislation that is based on expectations, estimates, projections and interpretations as at the date of this news release. Any statement that involves predictions, expectations, interpretations, beliefs, plans, projections, objectives, assumptions, future events or performance (often, but not always, using phrases such as “expects”, or “does not expect”, “is expected”, “interpreted”, “management’s view”, “anticipates” or “does not anticipate”, “plans”, “budget”, “scheduled”, “forecasts”, “estimates”, “potential”, “feasibility”, “believes” or “intends” or variations of such words and phrases or stating that certain actions, events or results “may” or “could”, “would”, “might” or “will” be taken to occur or be achieved) are not statements of historical fact and may be forward-looking information and are intended to identify forward-looking information. This news release contains the forward-looking information pertaining to, among other things: the Windfall gold deposit being one of the highest-grade resource-stage gold projects in Canada and having world-class scale; the key assumptions, parameters and methods used to estimate the mineral resource estimate; the prospects, if any, of the Windfall gold deposit; the timing and ability of Osisko, if at all, to publish a feasibility study for the Windfall gold deposit; the projected capital expenditures of mining activities at the Windfall gold deposit; upgrading an inferred mineral resource to a measured mineral resource or indicated mineral resource category; future drilling at the Windfall gold deposit; the deposit remaining open along strike to the northeast and at depth; significant high-grade zones (Lynx 4, Triple Lynx) remaining open down plunge; the plunge potential of the Lynx and Underdog zones; the significance of historic exploration activities and results. Such factors include, among others, risks relating to the ability of exploration activities (including drill results) to accurately predict mineralization; errors in management’s geological modelling; the ability of Osisko to complete further exploration activities, including drilling; property and royalty interests in the Windfall gold deposit; the ability of the Corporation to obtain required approvals; the results of exploration activities; risks relating to mining activities; the global economic climate; metal prices; dilution; environmental risks; and community and non-governmental actions. Although the forward-looking information contained in this news release is based upon what management believes, or believed at the time, to be reasonable assumptions, Osisko cannot assure shareholders and prospective purchasers of securities of the Corporation that actual results will be consistent with such forward-looking information, as there may be other factors that cause results not to be as anticipated, estimated or intended, and neither Osisko nor any other person assumes responsibility for the accuracy and completeness of any such forward-looking information. Osisko does not undertake, and assumes no obligation, to update or revise any such forward-looking statements or forward-looking information contained herein to reflect new events or circumstances, except as may be required by law.

 

CONTACT INFORMATION:

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

OSISKO MINING ANNOUNCES C$60 MILLION “BOUGHT DEAL” PRIVATE PLACEMENT OF FLOW-THROUGH SHARES

(Toronto, January 15, 2021) – Osisko Mining Inc. (TSX:OSK) (“Osisko” or the “Corporation“) is pleased to announce that it has entered into an agreement with Canaccord Genuity Corp. on behalf of a syndicate of underwriters (collectively, the “Underwriters“) in connection with a “bought deal” private placement financing (the “Offering“) of an aggregate of 11,215,000 common shares of the Corporation that will qualify as “flow-through shares” (within the meaning of subsection 66(15) of the Income Tax Act (Canada) and section 359.1 of the Taxation Act(Québec)) (the “Flow-Through Shares“).

 

The Flow-Through Shares will be issued at a price of C$5.35 (the “Issue Price“) for aggregate gross proceeds of C$60,000,250. In addition, the Corporation will grant the Underwriters an option (the “Underwriter’s Option”) to sell an additional 1,870,000 Flow-Through Shares, at the Issue Price for additional gross proceeds of C$10,004,500,exercisable 48 hours prior to closing.

 

The gross proceeds from the issue and sale of the Flow-Through Shares will be used by the Corporation to incur eligible “Canadian exploration expenses” that will qualify as “flow-through mining expenditures” as such terms are defined in the Income Tax Act (Canada) (the “Qualifying Expenditures“) related to the Corporation’s projects in Québec on or before December 31, 2022. All Qualifying Expenditures will be renounced in favour of the subscribers of the Flow-Through Shares effective December 31, 2021.

 

The Offering is expected to close on or about February 12, 2021 and is subject to certain conditions including, but not limited to, the receipt of all necessary approvals including the approval of the Toronto Stock Exchange and the applicable securities regulatory authorities. The Flow-Through Shares to be issued under the Offering will be subject to a hold period in Canada expiring four months and one day from the closing date of the Offering.

 

The securities offered have not been registered under the U.S. Securities Act of 1933, as amended, and may not be offered or sold in the United States absent registration or an applicable exemption from the registration requirements. This press release shall not constitute an offer to sell or the solicitation of an offer to buy nor shall there be any sale of the securities in any State in which such offer, solicitation or sale would be unlawful.

 

About Osisko Mining Inc.

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

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 and projections as at the date of this news release. The information in this news release about the Offering; the use of the proceeds from the Offering; the jurisdictions in which the Flow-Through Shares will be offered or sold; the number of Flow-Through Shares offered or sold; the size of the Offering; the timing and ability of the Corporation to close the Offering, if at all; the timing and ability of the Corporation to satisfy the customary listing conditions of the Toronto Stock Exchange, if at all; the timing and ability of the Corporation to obtain all necessary approvals; the tax treatment of the securities issued under the Offering under the Income Tax Act (Canada) and Taxation Act (Québec); the timing to renounce all Qualifying Expenditures in favour of the subscribers, if at all; and any other information herein that is not a historical fact may be “forward-looking information”. Any statement that involves discussions with respect to predictions, expectations, beliefs, plans, projections, objectives, assumptions, future events or performance (often but not always using phrases such as “expects”, or “does not expect”, “is expected”, “anticipates” or “does not anticipate”, “plans”, “budget”, “scheduled”, “forecasts”, “estimates”, “believes” or “intends” or variations of such words and phrases or stating that certain actions, events or results “may” or “could”, “would”, “might” or “will” be taken to occur or be achieved) are not statements of historical fact and may be forward-looking information and are intended to identify forward-looking information. This forward-looking information is based on reasonable assumptions and estimates of management of Osisko, at the time it was made, involves known and unknown risks, uncertainties and other factors which may cause the actual results, performance or achievements of Osisko to be materially different from any future results, performance or achievements expressed or implied by such forward-looking information. Such factors include, among others, risks relating to the Offering; volatility in the trading price of common shares of the Corporation; risks relating to the ability of the Corporation to obtain required approvals, complete definitive documentation and complete the Offering; the ability of Osisko to complete further exploration activities, including drilling; property interests; the results of exploration activities; risks relating to mining activities; the global economic climate; metal prices; dilution; environmental risks; changes in the tax and regulatory regime; 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 that actual results will be consistent with such forward-looking information, as there may be other factors that cause results not to be as anticipated, estimated or intended, and neither Osisko nor any other person assumes responsibility for the accuracy and completeness of any such forward-looking information. Osisko does not undertake, and assumes no obligation, to update or revise any such forward-looking statements or forward-looking information contained herein to reflect new events or circumstances, except as may be required by law.

 

For further information please contact:

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

OSISKO WINDFALL DRILLING STEPS OUT INTO MORE … GOLD

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

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

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

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

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

Expansion Drilling

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

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

Drill hole location

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

Lynx Zone

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

 

Triple Lynx

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

 

Qualified Person

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

 

 

Quality Control and Reporting Protocols

True width determination is estimated at 55-80% of the reported core length interval for the zone. Assays are uncut except where indicated. Intercepts occur within geological confines of major zones but have not been correlated to individual vein domains at this time. Reported intervals include minimum weighted averages of 3.0 g/t Au diluted over core lengths of at least 2.0 metres. All NQ core assays reported were obtained by either 1-kilogram screen fire assay or standard 50-gram fire-assaying-AA finish or gravimetric finish at (i) ALS Laboratories in Val d’Or, Québec, Thunder Bay, Ontario, Sudbury, Ontario or Vancouver, British Colombia, or (ii) Bureau Veritas in Timmins, Ontario. The 1-kilogram screen assay method is selected by the geologist when samples contain coarse gold or present a higher percentage of pyrite than surrounding intervals. Selected samples are also analyzed for multi-elements, including silver, using an Aqua Regia-ICP-AES method at ALS Laboratories. Drill program design, QualityAssurance/Quality Control (“QA/QC”) and interpretation of results is performed by qualified persons employing a QA/QC program consistent with NI 43-101 and industry best practices. Standards and blanks are included with every 20 samples for QA/QC purposes by the Corporation as well as the lab. Approximately 5% of sample pulps are sent to secondary laboratories for check assay.

 

About the Windfall Gold Deposit

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

 

About Osisko Mining Inc.

Osisko is a mineral exploration company focused on the acquisition, exploration, and development of precious metal resource properties in Canada. Osisko holds a 100% interest in the high-grade Windfall gold deposit located between Val-d’Or and Chibougamau in Québec and holds a100% undivided interest in a large area of claims in the surrounding Urban Barry area and nearby Quévillon area (over 2,700 square kilometres).

 

Cautionary Note Regarding Forward-Looking Information

This news release contains “forward-looking information” within the meaning of the applicable Canadian securities legislation that is based on expectations, estimates, projections and interpretations as at the date of this news release. Any statement that involves predictions, expectations, interpretations, beliefs, plans, projections, objectives, assumptions, future events or performance (often, but not always, using phrases such as “expects”, or “does not expect”, “is expected”, “interpreted”, “management’s view”, “anticipates” or “does not anticipate”, “plans”, “budget”, “scheduled”, “forecasts”, “estimates”, “potential”, “feasibility”, “believes” or “intends” or variations of such words and phrases or stating that certain actions, events or results “may” or “could”, “would”, “might” or “will” be taken to occur or be achieved) are not statements of historical fact and may be forward-looking information and are intended to identify forward-looking information. This news release contains the forward-looking information pertaining to, among other things: the Windfall gold deposit being one of the highest-grade resource-stage gold projects in Canada and having world-class scale; the key assumptions, parameters and methods used to estimate the mineral resource estimate; the prospects, if any, of the Windfall gold deposit; the timing and ability of Osisko, if at all, to publish a feasibility study for the Windfall gold deposit; the projected capital expenditures of mining activities at the Windfall gold deposit; upgrading an inferred mineral resource to a measured mineral resource or indicated mineral resource category; future drilling at the Windfall gold deposit; the deposit remaining open along strike to the northeast and at depth; significant high-grade zones (Lynx 4, Triple Lynx) remaining open down plunge; the plunge potential of the Lynx and Underdog zones; the significance of historic exploration activities and results. Such factors include, among others, risks relating to the ability of exploration activities (including drill results) to accurately predict mineralization; errors in management’s geological modelling; the ability of Osisko to complete further exploration activities, including drilling; property and royalty interests in the Windfall gold deposit; the ability of the Corporation to obtain required approvals; the results of exploration activities; risks relating to mining activities; the global economic climate; metal prices; dilution; environmental risks; and community and non-governmental actions. Although the forward-looking information contained in this news release is based upon what management believes, or believed at the time, to be reasonable assumptions, Osisko cannot assure shareholders and prospective purchasers of securities of the Corporation that actual results will be consistent with such forward-looking information, as there may be other factors that cause results not to be as anticipated, estimated or intended, and neither Osisko nor any other person assumes responsibility for the accuracy and completeness of any such forward-looking information. Osisko does not undertake, and assumes no obligation, to update or revise any such forward-looking statements or forward-looking information contained herein to reflect new events or circumstances, except as may be required by law.

 

CONTACT INFORMATION:

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

OSISKO WINDFALL INFILL DRILLING: STILL GOOD

New Intercepts Include 206 g/t Au over 2.0 Metres

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

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

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

Selected high-grade intercepts from the new results include: 206 g/t Au over 2.0 metres in WST-20-0581; 60.0 g/t Au over 2.0 metres in WST-20-0498; 52.9 g/t Au over 2.8 metres in WST-20-0513; 47.5 g/t Au over 2.2 metres in OSK-W-20-2334; 42.4 g/t Au over 2.3 metres in WST-20-0523A; 40.4 g/t Au over 3.6 metres in OSK-W-20-2133-W4. Maps showing hole locations and full analytical results are available at www.osiskomining.com.

 

Hole No. From (m) To (m) Interval (m) Au (g/t) uncut Au (g/t)         cut to 100 g/t Zone Corridor
OSK-W-20-2133-W4 798.8 802.4 3.6 40.4   Triple Lynx Triple Lynx
including 799.2 800.2 1.0 73.3
OSK-W-20-2243-W6 804.7 806.8 2.1 9.02   Lynx_361 Triple Lynx
851.4 854.8 3.4 23.5   Triple Lynx Triple Lynx
including 853.1 853.9 0.8 68.9
OSK-W-20-2252-W7 842.6 849.0 6.4 6.93   Triple Lynx Triple Lynx
including 844.8 845.1 0.3 41.7
879.1 881.8 2.7 4.62   Lynx_371 Triple Lynx
including 879.4 879.7 0.3 16.0
885.0 889.0 4.0 4.70   Lynx_371 Triple Lynx
  893.9 896.7 2.8 5.67   Lynx_371 Triple Lynx
  919.7 923.0 3.3 4.45   Lynx_361 Triple Lynx
including 919.7 920.0 0.3 13.3
OSK-W-20-2256-W4 1012.0 1014.0 2.0 14.6   Triple Lynx Triple Lynx
OSK-W-20-2256-W6 868.8 872.6 3.8 24.4   Lynx_371 Triple Lynx
including 869.7 870.3 0.6 79.5
  875.0 879.0 4.0 4.91   Lynx_371 Triple Lynx
  883.0 892.0 9.0 18.2   Lynx_361 Triple Lynx
including 887.6 888.3 0.7 57.6
OSK-W-20-2256-W7 869.4 872.0 2.6 4.86   Lynx_361 Triple Lynx
899.0 901.0 2.0 15.4   Triple Lynx Triple Lynx
including 899.6 900.0 0.4 69.4
OSK-W-20-2264 782.2 790.0 7.8 10.5   Lynx_330 Lynx
including 786.9 787.6 0.7 38.4
OSK-W-20-2271-W1 847.5 849.5 2.0 4.50   Lynx Lynx
OSK-W-20-2271-W2 1024.5 1026.9 2.4 32.1   Lynx_330 Lynx
including 1026.6 1026.9 0.3 90.1
1064.0 1066.1 2.1 6.13   Lynx_334 Lynx
including 1065.2 1065.6 0.4 20.3
1077.0 1079.0 2.0 5.15   Lynx_334 Lynx
OSK-W-20-2275-W3 899.0 901.0 2.0 10.8   Triple Lynx Triple Lynx
including 900.3 900.7 0.4 43.3
OSK-W-20-2275-W4 635.0 637.1 2.1 7.18   Lynx_365 Triple Lynx
including 636.1 636.5 0.4 25.6
804.8 810.4 5.6 11.8   Triple Lynx Triple Lynx
including 806.3 806.9 0.6 55.1
835.0 837.0 2.0 11.1   Triple Lynx Triple Lynx
including 835.6 836.0 0.4 54.7
889.5 892.0 2.5 5.40   Triple Lynx Triple Lynx
including 890.4 891.0 0.6 22.4
OSK-W-20-2280-W2 1102.7 1105.0 2.3 5.46   Lynx_370 Triple Lynx
including 1103.5 1104.0 0.5 20.9
OSK-W-20-2280-W3 1099.2 1101.3 2.1 5.22   Triple Lynx Triple Lynx
including 1101.0 1101.3 0.3 17.7
1103.0 1108.9 5.9 4.92   Triple Lynx Triple Lynx
including 1108.6 1108.9 0.3 18.2
1112.9 1116.0 3.1 20.1   Lynx_370 Triple Lynx
including 1112.9 1113.5 0.6 77.8
OSK-W-20-2280-W4 1040.0 1042.0 2.0 6.32   Triple Lynx Triple Lynx
  1044.0 1046.0 2.0 4.83   Triple Lynx Triple Lynx
including 1044.6 1044.9 0.3 24.6   Triple Lynx Triple Lynx
  1072.9 1077.5 4.6 12.8   Triple Lynx Triple Lynx
including 1075.5 1075.9 0.4 97.2  
  1091.2 1098.0 6.8 3.96   Triple Lynx Triple Lynx
  1100.7 1105.0 4.3 13.5 12.7 Lynx_364 Triple Lynx
including 1100.7 1101.0 0.3 112 100
  1109.7 1114.0 4.3 16.9 15.7 Lynx_364 Triple Lynx
including 1109.7 1110.0 0.3 117 100
OSK-W-20-2280-W5 1010.5 1016.0 5.5 3.61   Lynx_363 Triple Lynx
1039.0 1041.0 2.0 22.4   Lynx_364 Triple Lynx
including 1039.5 1040.0 0.5 81.8
1046.0 1052.0 6.0 30.4 23.7 Lynx_364 Triple Lynx
including 1047.8 1049.0 1.2 129 95
1054.0 1059.9 5.9 14.7   Lynx_364 Triple Lynx
including 1059.2 1059.9 0.7 82.8
1093.0 1096.0 3.0 12.0   Triple Lynx Triple Lynx
OSK-W-20-2283-W1 807.0 809.6 2.6 8.20   Triple Lynx Triple Lynx
including 807.5 809.6 2.1 9.02
OSK-W-20-2283-W2 814.8 817.1 2.3 8.16   Triple Lynx Triple Lynx
including 816.6 817.1 0.5 26.8
  832.7 835.0 2.3 6.13   Triple Lynx Triple Lynx
  991.0 993.0 2.0 9.11   Triple Lynx Triple Lynx
including 991.3 991.8 0.5 35.7
OSK-W-20-2283-W6 831.6 836.0 4.4 17.6   Lynx_361 Triple Lynx
including 833.3 834.6 1.3 40.6
OSK-W-20-2292-W4 892.0 894.9 2.9 4.02   Lynx_375 Triple Lynx
including 893.1 893.8 0.7 10.3
OSK-W-20-2295-W2 679.7 682.0 2.3 24.7 17.4 Triple Lynx Triple Lynx
including 681.7 682.0 0.3 157 100
OSK-W-20-2295-W3 660.3 662.3 2.0 3.89   Triple Lynx Triple Lynx
OSK-W-20-2295-W4 670.1 673.1 3.0 5.99   Triple Lynx Triple Lynx
including 670.1 670.6 0.5 16.6
698.0 700.1 2.1 4.33   Triple Lynx Triple Lynx
including 699.8 700.1 0.3 23.7
  757.0 759.3 2.3 4.08   Triple Lynx Triple Lynx
including 757.0 757.5 0.5 10.1
822.5 824.5 2.0 3.90   Triple Lynx Triple Lynx
including 823.5 824.0 0.5 14.1
841.0 843.0 2.0 5.77   Triple Lynx Triple Lynx
including 841.4 841.7 0.3 31.5
OSK-W-20-2313-W5 819.9 822.0 2.1 7.49   Lynx_376 Triple Lynx
OSK-W-20-2322-W1 1119.8 1124.6 4.8 7.20   Lynx_330 Lynx
including 1120.5 1121.2 0.7 13.8
OSK-W-20-2334 1007.1 1009.3 2.2 47.5 41.7 Lynx_330 Lynx
including 1008.0 1008.4 0.4 132 100
OSK-W-20-2367 59.0 62.0 3.0 6.38   Lynx_335 Lynx SW
WST-20-0406 130.2 132.4 2.2 3.26   Lynx_322 Lynx
WST-20-0486 57.5 63.7 6.2 15.1   Lynx_303 Lynx
including 58.5 59.0 0.5 47.1
and 59.7 60.1 0.4 46.1
114.0 116.0 2.0 10.5   Lynx_304 Lynx
including 115.4 116.0 0.6 27.6
WST-20-0498 123.5 125.7 2.2 3.84   Lynx_304 Lynx
132.5 134.5 2.0 60.0 41.3 Lynx_304 Lynx
including 133.8 134.5 0.7 154 100
WST-20-0502 73.4 76.0 2.6 4.73   Lynx_311 Lynx
WST-20-0503 57.9 59.9 2.0 18.6   Lynx_311 Lynx
including 57.9 58.7 0.8 46.1
WST-20-0505A 84.5 87.0 2.5 9.07   Lynx_307 Lynx
including 84.5 84.8 0.3 72.4
233.5 236.0 2.5 3.00   Lynx SW Lynx SW
WST-20-0506 123.2 125.5 2.3 7.83   Lynx_304 Lynx
including 123.9 124.7 0.8 22.4
WST-20-0509 94.4 96.5 2.1 4.24   Lynx_304 Lynx
including 94.4 94.7 0.3 13.9
WST-20-0512 48.2 50.2 2.0 8.84   Lynx_303 Lynx
including 49.3 49.9 0.6 29.1
  54.0 56.0 2.0 21.1   Lynx_311 Lynx
including 54.9 55.4 0.5 83.8
WST-20-0513 138.0 140.8 2.8 52.9 44.5 Lynx_323 Lynx
including 139.0 139.9 0.9 126 100
151.8 154.0 2.2 3.67   Lynx_304 Lynx
WST-20-0514 141.0 143.0 2.0 20.9   Lynx_323 Lynx
including 141.0 142.0 1.0 32.5
WST-20-0523A 67.2 69.4 2.2 14.8   Lynx_311 Lynx
including 67.7 68.4 0.7 44.8
72.0 74.3 2.3 42.4   Lynx_311 Lynx
including 73.5 74.3 0.8 90.4
WST-20-0525 142.0 144.0 2.0 13.3   Lynx_323 Lynx
including 142.0 143.0 1.0 26.4
WST-20-0537 84.9 87.1 2.2 6.49   Lynx Lynx
including 86.4 87.1 0.7 16.1
WST-20-0538 105.0 107.2 2.2 15.0   Lynx_304 Lynx
including 105.3 105.8 0.5 64.4
117.0 120.0 3.0 4.15   Lynx Lynx
WST-20-0539 45.9 48.2 2.3 6.89   Lynx_303 Lynx
96.6 98.6 2.0 20.6   Lynx_304 Lynx
including 97.0 97.5 0.5 80.2
WST-20-0540 51.3 53.5 2.2 3.12   Lynx_303 Lynx
111.0 113.2 2.2 7.86   Lynx_304 Lynx
including 111.0 111.3 0.3 47.2
WST-20-0541 45.8 48.1 2.3 10.0   Lynx_303 Lynx
including 46.4 47.2 0.8 25.6
60.1 62.3 2.2 13.8   Lynx Lynx
including 60.9 61.7 0.8 34.3
98.0 100.0 2.0 15.7   Lynx_304 Lynx
including 99.0 99.5 0.5 36.3
WST-20-0544 52.7 55.5 2.8 72.0 55.8 Lynx_303 Lynx
including 52.7 54.1 1.4 132 100
WST-20-0563 129.4 131.5 2.1 4.72   Lynx_365 Triple Lynx
including 129.4 130.0 0.6 15.1
WST-20-0579 58.0 60.5 2.5 5.62   Lynx_303 Lynx
WST-20-0581 268.4 274.0 5.6 4.56   Lynx SW Lynx SW
283.0 285.0 2.0 206 45.4 Lynx SW Lynx SW
including 283.0 283.9 0.9 458 100

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

 

Drill hole location

 

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

 

 

Lynx Zone

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

 

Triple Lynx

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

 

Qualified Person

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

 

Quality Control and Reporting Protocols

True width determination is estimated at 55-80% of the reported core length interval for the zone. Assays are uncut except where indicated. Intercepts occur within geological confines of major zones but have not been correlated to individual vein domains at this time. Reported intervals include minimum weighted averages of 3.0 g/t Au diluted over core lengths of at least 2.0 metres. All NQ core assays reported were obtained by either 1-kilogram screen fire assay or standard 50-gram fire-assaying-AA finish or gravimetric finish at (i) ALS Laboratories in Val d’Or, Québec, Thunder Bay, Ontario, Sudbury, Ontario or Vancouver, British Colombia, or (ii) Bureau Veritas in Timmins, Ontario. The 1-kilogram screen assay method is selected by the geologist when samples contain coarse gold or present a higher percentage of pyrite than surrounding intervals. Selected samples are also analyzed for multi-elements, including silver, using a four acids digestion -MS61 method at ALS Laboratories. Drill program design, Quality Assurance/Quality Control (“QA/QC”) and interpretation of results is performed by qualified persons employing a QA/QC program consistent with NI 43-101 and industry best practices. Standards and blanks are included with every 20 samples for QA/QC purposes by the Corporation as well as the lab. Approximately 5% of sample pulps are sent to secondary laboratories for check assay.

 

About the Windfall Gold Deposit

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

 

About Osisko Mining Inc.

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

 

Cautionary Note Regarding Forward-Looking Information

This news release contains “forward-looking information” within the meaning of the applicable Canadian securities legislation that is based on expectations, estimates, projections and interpretations as at the date of this news release. Any statement that involves predictions, expectations, interpretations, beliefs, plans, projections, objectives, assumptions, future events or performance (often, but not always, using phrases such as “expects”, or “does not expect”, “is expected”, “interpreted”, “management’s view”, “anticipates” or “does not anticipate”, “plans”, “budget”, “scheduled”, “forecasts”, “estimates”, “potential”, “feasibility”, “believes” or “intends” or variations of such words and phrases or stating that certain actions, events or results “may” or “could”, “would”, “might” or “will” be taken to occur or be achieved) are not statements of historical fact and may be forward-looking information and are intended to identify forward-looking information. This news release contains the forward-looking information pertaining to, among other things: the Windfall gold deposit being one of the highest-grade resource-stage gold projects in Canada and having world-class scale; the key assumptions, parameters and methods used to estimate the mineral resource estimate; the prospects, if any, of the Windfall gold deposit; the timing and ability of Osisko, if at all, to publish a feasibility study for the Windfall gold deposit; the projected capital expenditures of mining activities at the Windfall gold deposit; upgrading an inferred mineral resource to a measured mineral resource or indicated mineral resource category; future drilling at the Windfall gold deposit; the deposit remaining open along strike to the northeast and at depth; significant high-grade zones (Lynx 4, Triple Lynx) remaining open down plunge; the plunge potential of the Lynx and Underdog zones; the significance of historic exploration activities and results. Such factors include, among others, risks relating to the ability of exploration activities (including drill results) to accurately predict mineralization; errors in management’s geological modelling; the ability of Osisko to complete further exploration activities, including drilling; property and royalty interests in the Windfall gold deposit; the ability of the Corporation to obtain required approvals; the results of exploration activities; risks relating to mining activities; the global economic climate; metal prices; dilution; environmental risks; and community and non-governmental actions. Although the forward-looking information contained in this news release is based upon what management believes, or believed at the time, to be reasonable assumptions, Osisko cannot assure shareholders and prospective purchasers of securities of the Corporation that actual results will be consistent with such forward-looking information, as there may be other factors that cause results not to be as anticipated, estimated or intended, and neither Osisko nor any other person assumes responsibility for the accuracy and completeness of any such forward-looking information. Osisko does not undertake, and assumes no obligation, to update or revise any such forward-looking statements or forward-looking information contained herein to reflect new events or circumstances, except as may be required by law.

 

CONTACT INFORMATION:

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