Windfall Drilling Found 120 g/t Au Over 6.2 MHope it does not hurt the share price too much.
Osisko Windfall Drilling Intercepts More High-Grade Including 120 g/t Au Over 6.2 Metres
TORONTO, April 13, 2022 (GLOBE NEWSWIRE) -- 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, Qubec.
Significant new analytical results presented below include 31 intercepts in 12 underground drill holes and 5 wedges. The infill intercepts are located inside defined January 2022 mineral resource estimate (“MRE”) blocks ( see Osisko news release dated January 10, 2022 ). The expansion intercepts are located outside the January 2022 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: “We remain very pleased with the results of our infill and expansion drill program at Lynx. High grade zones continue to be intersected where expected and the expansion drilling continues to define additional zones nearby.”
Selected high-grade intercepts include: 120 g/t Au over 6.2 metres in OSK-W-21-2287-W14; 67.1 g/t Au over 4.4 metres in OSK-W-22-2646-W3; 111 g/t Au over 2.5 metres in WST-22-1009A; 82.6 g/t Au over 2.2 metres in WST-21-0997; 76.0 g/t Au over 2.3 metres in WST-21-0974; 63.9 g/t Au over 2.1 metres in WST-22-0999 and 60.8 g/t Au over 2.2 metres in OSK-W-22-2540-W13. Maps showing hole locations and full analytical results are available at www.osiskomining.com . Maps: Long Section_Infill EN 20220413 , Long Section_Expan EN 20220413 , PR_EN_20220413_Surface , PR_EN_20220413_UG ..
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-21-2287-W14 | 1253.0 | 1259.2 | 6.2 | 120 | 51.4 | LX4_3449 | Lynx 4 |
| including | 1256.7 | 1257.2 | 0.5 | 768 | 100 |
| OSK-W-22-2646-W3 | 1057.6 | 1062.5 | 4.9 | 15.6 | | TLX_3158 | Triple Lynx |
| including | 1058.3 | 1058.7 | 0.4 | 99.1 | |
| WST-21-0839 | 512.0 | 514.0 | 2.0 | 5.16 | | LX4_3470 | Lynx 4 |
| including | 512.3 | 512.7 | 0.4 | 21.9 | |
| WST-21-0974 | 44.0 | 46.3 | 2.3 | 76.0 | 31.8 | TLX_3161 | Triple Lynx |
| including | 45.2 | 45.9 | 0.7 | 245 | 100 |
| WST-21-0979 | 189.4 | 194.8 | 5.4 | 15.6 | 12.9 | TLX_3154 | Triple Lynx |
| including | 192.0 | 192.5 | 0.5 | 130 | 100 |
| | 197.1 | 199.2 | 2.1 | 19.3 | | TLX_3184 | Triple Lynx |
| including | 197.4 | 197.7 | 0.3 | 44.4 | |
| WST-21-0980 | 602.8 | 605.0 | 2.2 | 50.3 | 31.9 | LX4_3448 | Lynx 4
|
| including | 602.8 | 603.5 | 0.7 | 158 | 100 |
| WST-21-0997 | 191.1 | 193.3 | 2.2 | 82.6 | 44.7 | TLX_3121 | Triple Lynx |
| including | 191.7 | 192.4 | 0.7 | 219 | 100 |
| WST-22-0999 | 227.0 | 229.0 | 2.0 | 9.37 | | TLX_3131 | Triple Lynx |
| including | 227.7 | 228.5 | 0.8 | 23.4 | |
| | 351.0 | 353.1 | 2.1 | 4.13 | | LX4_3405 | Lynx 4 |
| including | 352.7 | 353.1 | 0.4 | 20.8 | |
| | 376.9 | 379.0 | 2.1 | 63.9 | 38.8 | LX4_3410 | Lynx 4 |
| including | 377.2 | 378.0 | 0.8 | 166 | 100 |
| | 390.5 | 394.0 | 3.5 | 27.4 | | LX4_3440 | Lynx 4 |
| including | 393.0 | 394.0 | 1.0 | 76.3 | |
| WST-22-1000 | 202.3 | 212.0 | 9.7 | 3.83 | | TLX_3145 | Triple Lynx |
| including | 204.0 | 205.2 | 1.2 | 11.7 | |
| WST-22-1004 | 320.5 | 325.3 | 4.8 | 5.78 | | TLX_3131 | Triple Lynx |
| including | 324.5 | 324.8 | 0.3 | 18.1 | |
| | 504.0 | 506.0 | 2.0 | 44.7 | 25.4 | LX4_3402 | Lynx 4 |
| including | 505.5 | 506.0 | 0.5 | 177 | 100 |
| WST-22-1005 | 149.2 | 157.6 | 8.4 | 4.96 | | TLX_3161 | Triple Lynx |
| WST-22-1006 | 566.7 | 569.1 | 2.4 | 15.1 | | LX4_3430 | Lynx 4 |
| including | 566.7 | 567.0 | 0.3 | 89.3 | |
| WST-22-1008 | 147.8 | 150.0 | 2.2 | 8.76 | | TLX_3161 | Triple Lynx |
| | 210.0 | 212.1 | 2.1 | 11.0 | | TLX_3169 | Triple Lynx |
| | 217.7 | 220.0 | 2.3 | 3.98 | | TLX_3175 | Triple Lynx |
| | 226.0 | 228.0 | 2.0 | 5.42 | | TLX_3175 | Triple Lynx |
| WST-22-1009A | 172.0 | 174.0 | 2.0 | 8.64 | | LXM_3388 | Lynx |
| including | 172.8 | 173.3 | 0.5 | 22.9 | |
| | 485.5 | 488.0 | 2.5 | 111 | 60.3 | LX4_3404 | Lynx 4 |
| including | 485.5 | 486.1 | 0.6 | 240 | 100 |
| | 499.0 | 501.1 | 2.1 | 11.7 | | LX4_3430 | Lynx 4 |
| including | 499.9 | 500.6 | 0.7 | 32.8 | |
| | 511.0 | 513.0 | 2.0 | 3.52 | | LX4_3454 | Lynx 4 |
| including | 511.9 | 512.3 | 0.4 | 14.9 | |
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 and TLX = Triple Lynx.
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-21-2381-W3 | 1204.2 | 1210.7 | 6.5 | 4.41 | | TLX_3172 | Triple Lynx |
| including | 1209.7 | 1210.7 | 1.0 | 15.6 | |
| OSK-W-21-2646-W1 | 1046.0 | 1055.4 | 9.4 | 11.6 | | TLX_3158 | Triple Lynx |
| including | 1048.4 | 1048.7 | 0.3 | 65.8 | |
| and | 1054.5 | 1055.4 | 0.9 | 54.7 | |
| OSK-W-22-2540-W13 | 987.8 | 990.0 | 2.2 | 60.8 | 24.2 | TLX_3158 | Triple Lynx |
| including | 988.1 | 988.6 | 0.5 | 261 | 100 |
| OSK-W-22-2646-W3 | 1181.7 | 1186.1 | 4.4 | 67.1 | 31.7 | TLX_3172 | Triple Lynx |
| including | 1184.9 | 1186.1 | 1.2 | 230 | 100 |
| WST-22-1008 | 249.0 | 251.5 | 2.5 | 5.05 | | TLX | Triple Lynx |
| WST-22-1009A | 576.1 | 578.3 | 2.2 | 3.54 | | LX4 | Lynx 4 |
| including | 577.5 | 578.3 | 0.8 | 9.57 | |
Notes: True widths are estimated at 55 – 80% of the reported core length interval. See "Quality Control and Reporting Protocols" below., LX4 = Lynx 4 and TLX = Triple Lynx.
Drill hole location
| Hole No. | Azimuth (°) | Dip (°) | Length (m) | UTM E | UTM N | Elevation | Section |
| OSK-W-21-2287-W14 | 116 | -53 | 1338 | 453607 | 5435714 | 404 | 4075 |
| OSK-W-21-2381-W3 | 134 | -53 | 1392 | 453620 | 5435790 | 402 | 4125 |
| OSK-W-21-2646-W1 | 109 | -58 | 1236 | 453326 | 5435648 | 414 | 3800 |
| OSK-W-22-2540-W13 | 117 | -60 | 1220 | 453466 | 5435639 | 410 | 3925 |
| OSK-W-22-2646-W3 | 109 | -58 | 1251 | 453326 | 5435648 | 414 | 3800 |
| WST-21-0839 | 140 | -38 | 577 | 453321 | 5435235 | 55 | 3600 |
| WST-21-0974 | 142 | -11 | 67 | 453441 | 5435223 | -157 | 3700 |
| WST-21-0979 | 178 | -55 | 255 | 453358 | 5435296 | -149 | 3675 |
| WST-21-0980 | 131 | -38 | 681 | 453374 | 5435297 | -26 | 3675 |
| WST-21-0997 | 119 | -45 | 640 | 453506 | 5435326 | -90 | 3800 |
| WST-22-0999 | 134 | -26 | 454 | 453445 | 5435276 | -99 | 3725 |
| WST-22-1000 | 139 | -45 | 447 | 453360 | 5435297 | -148 | 3675 |
| WST-22-1004 | 137 | -40 | 600 | 453322 | 5435236 | 54 | 3600 |
| WST-22-1005 | 145 | -44 | 334 | 453360 | 5435297 | -148 | 3675 |
| WST-22-1006 | 121 | -45 | 616 | 453506 | 5435326 | -90 | 3800 |
| WST-22-1008 | 148 | -42 | 420 | 453360 | 5435297 | -148 | 3675 |
| WST-22-1009A | 120 | -40 | 603 | 453507 | 5435332 | -47 | 3800 |
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 in thickness. Fuchsite alteration is common and is spatially constrained to near the gabbros. Mineralization occurs at or near geological contacts between felsic porphyritic or fragmental intrusions and the host rhyolites or gabbros and locally can be hosted along the gabbro-rhyolite contact.
Qualified Person
The scientific and technical content of this news release has been reviewed, prepared and approved by Mr. Louis Grenier, M.Sc.A., P.Geo. (OGQ 800), Director of Exploration for Osisko's Windfall gold project, who is a "qualified person" as defined by National Instrument 43-101 – Standards of Disclosure for Mineral Projects ("NI 43-101").
Quality Control and Reporting Protocols
True width determination is estimated at 55-80% of the reported core length interval for the zone. Assays are uncut except where indicated. Intercepts occur within geological confines of major zones but have not been correlated to individual vein domains at this time. Reported intervals include minimum weighted averages of 3.5 g/t Au diluted over core lengths of at least 2.0 metres. NQ core assays were obtained by either 1-kilogram screen fire assay or standard 50-gram fire-assaying-AA finish or gravimetric finish at (i) ALS Laboratories in Val d'Or, Qubec, 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.