Month: July 2021
OSISKO DRILLING RETURNS HIGH-GRADE AT WINDFALL
96.7 g/t Au Over 2.2 Metres in Triple Lynx
97.4 g/t Au Over 2.0 Metres in Underdog
(Toronto, July 20, 2021) Osisko Mining Inc. (OSK:TSX. “Osisko” or the “Corporation”) is pleased to provide new analytical results from the ongoing drill program at its 100% owned Windfall gold project located in the Abitibi greenstone belt, Urban Township, Eeyou Istchee James Bay, Québec.
Significant new analytical results presented below include 96 intercepts in 25 drill holes (7 from surface, 18 from underground) and 20 wedges. The infill intercepts are located inside defined February 2021 mineral resource estimate (“MRE”) blocks (see Osisko news release dated February 17, 2021). The expansion intercepts are located outside the February 2021 MRE blocks and either expand resource wireframes or are in a defined zone or corridor but do not yet correlate to a specific wireframe.
Osisko Chief Executive Officer John Burzynski commented: “The drill program at Windfall continues to deliver positive results. Both headline holes are infill holes from two different zones. Further, the first two intervals in hole OSK-W-21-2123-W5 extended Lynx 4 wireframe-3170 25 meters to depth and the third interval is in an adjacent area currently being modelled. Expansion drilling in the Triple Lynx corridor following up on hole OSK-W-20-2371-W1 which intersected 123 g/t Au over 2.4 meters (see Osisko news release dated April 8, 2021) successfully intercepted this new zone with the last interval in hole OSK-W-21-2275-W7. All these results will be included in the resource estimate update by the end of the year”.
Selected high-grade intercepts include: 96.7 g/t Au over 2.2 metres and 29.3 g/t Au over 5.2 metres in WST-21-0824; 49.9 g/t Au over 4.0 metres in OSK-W-21-2503-W1; 97.4 g/t Au over 2.0 metres in OSK-W-21-2512-W1; 69.9 g/t Au over 2.4 metres in OSK-W-21-2522; 67.0 g/t Au over 2.1 metres in WST-21-0791; 28.7 g/t Au over 4.1 metres in WST-21-0797A; 51.9 g/t Au over 2.2 metres in OSK-W-21-2512. Maps showing hole locations and full analytical results are available at www.osiskomining.com.
Infill Drilling
| Hole No. | From (m) | To (m) | Interval (m) | Au (g/t) uncut | Au (g/t) cut to 100 g/t | Zone | Corridor |
| OSK-W-21-1827-W5 | 520.7 | 523.0 | 2.3 | 6.06 | Caribou_2241 | Caribou | |
| including | 520.7 | 521.7 | 1.0 | 13.4 | |||
| OSK-W-21-1882-W4 | 452.0 | 454.0 | 2.0 | 4.47 | Caribou_2232 | Caribou | |
| including | 453.4 | 454.0 | 0.6 | 14.1 | |||
| 790.9 | 793.0 | 2.1 | 6.17 | UDD_4100 | Underdog | ||
| including | 791.2 | 791.5 | 0.3 | 32.4 | |||
| OSK-W-21-2067-W9 | 1048.0 | 1050.0 | 2.0 | 10.1 | TLX_3183 | Triple Lynx | |
| 1069.0 | 1071.0 | 2.0 | 6.57 | TLX_3163 | Triple Lynx | ||
| 1107.6 | 1111.5 | 3.9 | 5.52 | TLX_3162 | Triple Lynx | ||
| including | 1110.7 | 1111.1 | 0.4 | 11.9 | |||
| 1114.3 | 1116.9 | 2.6 | 6.47 | TLX_3170 | Triple Lynx | ||
| including | 1115.1 | 1115.6 | 0.5 | 16.0 | |||
| 1122.0 | 1124.0 | 2.0 | 12.3 | TLX_3170 | Triple Lynx | ||
| including | 1123.0 | 1123.5 | 0.5 | 26.1 | |||
| 1126.3 | 1133.0 | 6.7 | 9.09 | TLX_3170 | Triple Lynx | ||
| including | 1126.6 | 1127.0 | 0.4 | 28.0 | |||
| and | 1129.0 | 1130.0 | 1.0 | 24.7 | |||
| OSK-W-21-2275-W7 | 793.0 | 795.2 | 2.2 | 13.2 | TLX_3171 | Triple Lynx | |
| including | 794.2 | 794.5 | 0.3 | 37.1 | |||
| OSK-W-21-2363-W5 | 700.0 | 702.0 | 2.0 | 3.67 | TLX_3177 | Triple Lynx | |
| including | 700.6 | 701.4 | 0.8 | 9.11 | |||
| 760.0 | 762.0 | 2.0 | 5.15 | TLX_3171 | Triple Lynx | ||
| including | 760.5 | 761.0 | 0.5 | 19.7 | |||
| OSK-W-21-2478-W5 | 880.8 | 883.5 | 2.7 | 6.94 | TLX_3184 | Triple Lynx | |
| including | 880.8 | 881.1 | 0.3 | 38.8 | |||
| 984.0 | 986.0 | 2.0 | 11.3 | TLX_3193 | Triple Lynx | ||
| including | 985.0 | 985.3 | 0.3 | 71.4 | |||
| OSK-W-21-2479-W5 | 956.2 | 958.5 | 2.3 | 14.2 | UDD_4910 | Underdog | |
| including | 956.2 | 956.5 | 0.3 | 38.4 | |||
| 964.1 | 966.3 | 2.2 | 5.69 | UDD_4514 | Underdog | ||
| including | 965.7 | 966.3 | 0.6 | 20.2 | |||
| OSK-W-21-2492-W4 | 886.0 | 888.0 | 2.0 | 4.55 | LX4_3417 | Lynx 4 | |
| OSK-W-21-2495-W1 | 652.2 | 654.5 | 2.3 | 4.20 | LXM_3304 | Lynx | |
| including | 652.2 | 652.7 | 0.5 | 12.3 | |||
| OSK-W-21-2503-W1 | 978.0 | 982.0 | 4.0 | 49.9 | 45.2 | TLX_3163 | Triple Lynx |
| including | 978.4 | 979.1 | 0.7 | 127 | 100 | ||
| 1002.9 | 1005.0 | 2.1 | 5.90 | TLX_3164 | Triple Lynx | ||
| including | 1004.6 | 1005.0 | 0.4 | 26.8 | |||
| OSK-W-21-2503-W2 | 995.0 | 997.0 | 2.0 | 5.99 | TLX_3163 | Triple Lynx | |
| 1025.8 | 1028.0 | 2.2 | 9.54 | TLX_3164 | Triple Lynx | ||
| 1080.0 | 1082.0 | 2.0 | 37.1 | 18.1 | TLX_3162 | Triple Lynx | |
| including | 1080.7 | 1081.0 | 0.3 | 227 | 100 | ||
| 1084.4 | 1088.0 | 3.6 | 5.14 | TLX_3162 | Triple Lynx | ||
| including | 1084.4 | 1084.8 | 0.4 | 22.5 | |||
| OSK-W-21-2512 | 735.8 | 738.0 | 2.2 | 51.9 | 26.4 | UDD_4104 | Underdog |
| including | 736.2 | 736.7 | 0.5 | 212 | 100 | ||
| OSK-W-21-2512-W1 | 765.0 | 767.0 | 2.0 | 97.4 | 50.1 | UDD_4104 | Underdog |
| including | 766.0 | 767.0 | 1.0 | 195 | 100 | ||
| 992.8 | 994.8 | 2.0 | 12.2 | UDD_4910 | Underdog | ||
| including | 993.9 | 994.8 | 0.9 | 25.7 | |||
| OSK-W-21-2520 | 878.0 | 880.0 | 2.0 | 4.05 | UDD_4100 | Underdog | |
| including | 878.9 | 879.4 | 0.5 | 15.3 | |||
| OSK-W-21-2522 | 1003.5 | 1005.9 | 2.4 | 69.9 | 39.8 | LX4_3430 | Lynx 4 |
| including | 1003.9 | 1004.6 | 0.7 | 203 | 100 | ||
| OSK-W-21-2528 | 224.8 | 227.2 | 2.4 | 4.90 | Caribou_2100 | Caribou | |
| OSK-W-21-2531 | 619.7 | 621.9 | 2.2 | 4.64 | Caribou_2233 | Caribou | |
| including | 621.5 | 621.9 | 0.4 | 22.1 | |||
| OSK-W-21-2532 | 512.0 | 514.0 | 2.0 | 10.6 | Caribou_2241 | Caribou | |
| including | 512.0 | 512.4 | 0.4 | 40.5 | |||
| WST-21-0759 | 127.9 | 130.0 | 2.1 | 10.5 | LXM_3334 | Lynx | |
| 337.0 | 341.6 | 4.6 | 6.33 | TLX_3167 | Triple Lynx | ||
| including | 340.7 | 341.2 | 0.5 | 13.5 | |||
| 588.0 | 590.1 | 2.1 | 25.6 | LX4_3427 | Lynx 4 | ||
| 663.5 | 665.5 | 2.0 | 34.9 | 25.7 | LX4_3438 | Lynx 4 | |
| including | 665.0 | 665.5 | 0.5 | 137 | 100 | ||
| WST-21-0770 | 529.4 | 531.4 | 2.0 | 7.80 | LX4_3430 | Lynx 4 | |
| WST-21-0791 | 97.9 | 101.6 | 3.7 | 4.57 | LXM_3313 | Lynx | |
| 163.0 | 165.0 | 2.0 | 13.3 | LXM_3304 | Lynx | ||
| including | 163.0 | 163.9 | 0.9 | 29.2 | |||
| 167.5 | 169.8 | 2.3 | 14.8 | LXM_3304 | Lynx | ||
| including | 169.3 | 169.8 | 0.5 | 42.0 | |||
| 298.8 | 301.2 | 2.4 | 4.80 | LHW_3215 | Lynx HW | ||
| including | 299.6 | 300.3 | 0.7 | 16.0 | |||
| WST-21-0792 | 169.5 | 172.0 | 2.5 | 5.69 | LXM_3304 | Lynx | |
| including | 169.5 | 170.3 | 0.8 | 11.8 | |||
| 296.1 | 298.3 | 2.2 | 23.2 | LHW_3215 | Lynx HW | ||
| including | 296.1 | 297.1 | 1.0 | 48.8 | |||
| WST-21-0793A | 167.0 | 169.0 | 2.0 | 7.65 | LXM_3304 | Lynx | |
| including | 167.3 | 167.7 | 0.4 | 28.5 | |||
| 240.6 | 242.6 | 2.0 | 4.99 | LHW_3221 | Lynx HW | ||
| including | 241.5 | 242.3 | 0.8 | 11.4 | |||
| WST-21-0794 | 282.0 | 284.0 | 2.0 | 6.73 | LHW_3215 | Lynx HW | |
| 290.0 | 292.0 | 2.0 | 4.11 | LHW_3215 | Lynx HW | ||
| including | 291.3 | 291.7 | 0.4 | 19.9 | |||
| WST-21-0797A | 125.6 | 127.6 | 2.0 | 45.5 | 23.9 | LXM_3334 | Lynx |
| including | 126.3 | 126.7 | 0.4 | 208 | 100 | ||
| 335.3 | 341.4 | 6.1 | 15.5 | TLX_3131 | Triple Lynx | ||
| including | 339.3 | 340.3 | 1.0 | 35.5 | |||
| 350.6 | 354.7 | 4.1 | 28.7 | 25.2 | TLX_3167 | Triple Lynx | |
| including | 353.8 | 354.2 | 0.4 | 136 | 100 | ||
| 357.0 | 359.0 | 2.0 | 4.51 | TLX_3167 | Triple Lynx | ||
| WST-21-0801 | 287.3 | 289.9 | 2.6 | 21.3 | Lynx SW | Lynx SW | |
| WST-21-0807 | 325.4 | 327.8 | 2.4 | 3.74 | TLX_3167 | Triple Lynx | |
| 480.8 | 483.0 | 2.2 | 25.1 | LX4_3450 | Lynx 4 | ||
| including | 481.8 | 482.5 | 0.7 | 72.1 | |||
| WST-21-0816 | 69.0 | 71.4 | 2.4 | 4.88 | Z27_1115 | Zone 27 | |
| WST-21-0818 | 67.7 | 69.9 | 2.2 | 5.79 | Z27_1115 | Zone 27 | |
| WST-21-0822 | 62.4 | 64.4 | 2.0 | 6.39 | Z27_1102 | Zone 27 | |
| 117.6 | 119.8 | 2.2 | 16.2 | 14.2 | Z27 | Zone 27 | |
| including | 118.5 | 118.8 | 0.3 | 114 | 100 | ||
| WST-21-0824 | 261.6 | 263.8 | 2.2 | 96.7 | 27.1 | TLX_3161 | Triple Lynx |
| including | 262.3 | 262.8 | 0.5 | 406 | 100 | ||
| 273.8 | 279.0 | 5.2 | 29.3 | TLX_3161 | Triple Lynx | ||
| including | 275.0 | 276.0 | 1.0 | 89.0 | |||
| 283.5 | 285.5 | 2.0 | 3.59 | TLX_3161 | Triple Lynx | ||
| WST-21-0829 | 149.0 | 152.1 | 3.1 | 5.66 | LXM_3334 | Lynx | |
| WST-21-0838 | 344.0 | 346.0 | 2.0 | 4.30 | LSW_3556 | Lynx SW |
Notes: True widths are estimated at 55 – 80% of the reported core length interval. See “Quality Control and Reporting Protocols” below. Z27 = Zone 27, LSW = Lynx Southwest, LXM = Lynx Main, LX4 = Lynx 4, LHW = Lynx Hanging Wall, TLX = Triple Lynx and UDD = Underdog.
Expansion Drilling
| Hole No. | From (m) | To (m) | Interval (m) | Au (g/t) uncut | Au (g/t) cut to 100 g/t | Zone | Corridor |
| OSK-W-21-1432-W3 | 950.0 | 952.5 | 2.5 | 37.5 | 32.7 | Lynx 4 | Lynx |
| including | 951.0 | 951.5 | 0.5 | 124 | 100 | ||
| OSK-W-21-1827-W4 | 1024.3 | 1026.5 | 2.2 | 4.14 | Underdog | Underdog | |
| including | 1024.3 | 1024.6 | 0.3 | 20.0 | |||
| OSK-W-21-2067-W8 | 996.0 | 999.0 | 3.0 | 4.34 | Triple Lynx | Triple Lynx | |
| OSK-W-21-2123-W5 | 1220.0 | 1222.0 | 2.0 | 5.99 | Triple Lynx | Triple Lynx | |
| including | 1220.0 | 1220.5 | 0.5 | 20.2 | |||
| 1233.0 | 1235.0 | 2.0 | 4.61 | Triple Lynx | Triple Lynx | ||
| 1293.3 | 1295.7 | 2.4 | 9.77 | Triple Lynx | Triple Lynx | ||
| including | 1294.7 | 1295.7 | 1.0 | 19.8 | |||
| OSK-W-21-2123-W6 | 1091.0 | 1093.0 | 2.0 | 6.76 | Triple Lynx | Triple Lynx | |
| 1144.0 | 1146.0 | 2.0 | 3.78 | Triple Lynx | Triple Lynx | ||
| 1176.0 | 1178.0 | 2.0 | 6.57 | Triple Lynx | Triple Lynx | ||
| including | 1177.3 | 1177.6 | 0.3 | 43.2 | |||
| OSK-W-21-2275-W7 | 766.9 | 769.0 | 2.1 | 3.55 | Triple Lynx | Triple Lynx | |
| including | 766.9 | 767.2 | 0.3 | 24.5 | |||
| 782.5 | 785.0 | 2.5 | 5.95 | Triple Lynx | Triple Lynx | ||
| including | 783.1 | 783.6 | 0.5 | 14.1 | |||
| and | 784.5 | 785.0 | 0.5 | 14.6 | |||
| 862.0 | 864.0 | 2.0 | 5.04 | Triple Lynx | Triple Lynx | ||
| including | 862.5 | 862.9 | 0.4 | 13.4 | |||
| and | 863.7 | 864.0 | 0.3 | 12.6 | |||
| 1113.4 | 1115.6 | 2.2 | 9.82 | Triple Lynx | Triple Lynx | ||
| OSK-W-21-2287-W2 | 1259.0 | 1261.0 | 2.0 | 4.68 | Lynx 4 | Lynx | |
| OSK-W-21-2470-W5 | 1166.0 | 1168.2 | 2.2 | 7.34 | Triple Lynx | Triple Lynx | |
| including | 1166.5 | 1167.6 | 1.1 | 14.6 | |||
| OSK-W-21-2479-W5 | 475.0 | 477.0 | 2.0 | 3.79 | Z27 | Zone 27 | |
| 842.0 | 844.0 | 2.0 | 8.61 | Underdog | Underdog | ||
| including | 842.5 | 843.3 | 0.8 | 21.4 | |||
| OSK-W-21-2503-W2 | 981.0 | 983.1 | 2.1 | 4.27 | Triple Lynx | Triple Lynx | |
| 1040.0 | 1042.0 | 2.0 | 3.83 | Triple Lynx | Triple Lynx | ||
| OSK-W-21-2512-W1 | 1009.0 | 1011.0 | 2.0 | 43.0 | 24.6 | Underdog | Underdog |
| including | 1009.6 | 1010.0 | 0.4 | 192 | 100 | ||
| OSK-W-21-2522-W1 | 849.0 | 851.0 | 2.0 | 3.76 | Lynx | Lynx | |
| OSK-W-21-2528 | 283.0 | 285.0 | 2.0 | 4.97 | Caribou | Caribou | |
| including | 284.3 | 285.0 | 0.7 | 13.4 | |||
| 526.0 | 528.0 | 2.0 | 3.85 | Z27 | Zone 27 | ||
| OSK-W-21-2533 | 252.0 | 254.0 | 2.0 | 5.39 | F51 | F51 | |
| WST-21-0682B | 400.0 | 403.8 | 3.8 | 11.9 | Lynx SW | Lynx SW | |
| WST-21-0724 | 264.6 | 266.7 | 2.1 | 3.98 | Triple Lynx | Triple Lynx | |
| including | 266.2 | 266.7 | 0.5 | 16.6 | |||
| WST-21-0726 | 431.5 | 433.7 | 2.2 | 3.97 | Triple Lynx | Triple Lynx | |
| including | 432.3 | 432.7 | 0.4 | 19.3 | |||
| WST-21-0770 | 545.4 | 547.5 | 2.1 | 6.94 | Lynx 4 | Lynx | |
| including | 546.4 | 546.9 | 0.5 | 18.5 | |||
| WST-21-0791 | 237.9 | 240.0 | 2.1 | 67.0 | 23.9 | Lynx HW | Lynx |
| including | 237.9 | 238.4 | 0.5 | 281 | 100 | ||
| WST-21-0793A | 235.5 | 237.6 | 2.1 | 3.71 | Lynx HW | Lynx | |
| including | 236.4 | 237.3 | 0.9 | 7.71 | |||
| WST-21-0797A | 182.9 | 185.5 | 2.6 | 4.04 | Lynx | Lynx | |
| 380.2 | 382.4 | 2.2 | 35.9 | 24.2 | Triple Lynx | Triple Lynx | |
| including | 382.1 | 382.4 | 0.3 | 186 | 100 | ||
| WST-21-0829 | 359.6 | 363.0 | 3.4 | 6.81 | Triple Lynx | Triple Lynx | |
| including | 362.0 | 363.0 | 1.0 | 15.5 |
Notes: True widths are estimated at 55 – 80% of the reported core length interval. See “Quality Control and Reporting Protocols” below. SW = Southwest, HW = Hanging Wall, Z27 = Zone 27.
Drill hole location
| Hole Number | Azimuth (°) | Dip (°) | Length (m) | UTM E | UTM N | Elevation | Section |
| OSK-W-21-1432-W3 | 132 | -55 | 1094 | 453811 | 5435779 | 400 | 4300 |
| OSK-W-21-1827-W4 | 331 | -58 | 1046 | 452506 | 5434390 | 403 | 2475 |
| OSK-W-21-1827-W5 | 331 | -58 | 1164 | 452506 | 5434390 | 403 | 2475 |
| OSK-W-21-1882-W4 | 328 | -58 | 1074 | 452469 | 5434405 | 400 | 2450 |
| OSK-W-21-2067-W8 | 123 | -53 | 1191 | 453241 | 5435697 | 416 | 3750 |
| OSK-W-21-2067-W9 | 123 | -53 | 1164 | 453241 | 5435697 | 416 | 3750 |
| OSK-W-21-2123-W5 | 126 | -57 | 1332 | 453235 | 5435774 | 409 | 3800 |
| OSK-W-21-2123-W6 | 126 | -57 | 1346 | 453235 | 5435774 | 409 | 3800 |
| OSK-W-21-2275-W7 | 127 | -49 | 1182 | 452888 | 5435583 | 409 | 3400 |
| OSK-W-21-2287-W2 | 116 | -53 | 1392 | 453607 | 5435714 | 404 | 4075 |
| OSK-W-21-2363-W5 | 139 | -52 | 1014 | 452930 | 5435548 | 419 | 3425 |
| OSK-W-21-2470-W5 | 132 | -59 | 1203 | 453304 | 5435639 | 415 | 3775 |
| OSK-W-21-2478-W5 | 128 | -54 | 1166 | 452997 | 5435607 | 425 | 3500 |
| OSK-W-21-2479-W5 | 344 | -55 | 978 | 452315 | 5434419 | 399 | 2325 |
| OSK-W-21-2492-W4 | 122 | -53 | 945 | 453687 | 5435676 | 401 | 4125 |
| OSK-W-21-2495-W1 | 123 | -54 | 1301 | 453426 | 5435565 | 410 | 3850 |
| OSK-W-21-2503-W1 | 126 | -58 | 1161 | 453333 | 5435641 | 413 | 3800 |
| OSK-W-21-2503-W2 | 126 | -58 | 1199 | 453333 | 5435641 | 413 | 3800 |
| OSK-W-21-2512 | 331 | -54 | 1041 | 452448 | 5434465 | 400 | 2475 |
| OSK-W-21-2512-W1 | 331 | -54 | 1089 | 452448 | 5434465 | 400 | 2475 |
| OSK-W-21-2520 | 337 | -56 | 1140 | 452596 | 5434392 | 401 | 2550 |
| OSK-W-21-2522 | 128 | -54 | 1221 | 453451 | 5435594 | 411 | 3900 |
| OSK-W-21-2522-W1 | 128 | -54 | 1116 | 453451 | 5435594 | 411 | 3900 |
| OSK-W-21-2528 | 333 | -54 | 738 | 452469 | 5434682 | 403 | 2600 |
| OSK-W-21-2531 | 344 | -62 | 1188 | 452566 | 5434415 | 403 | 2550 |
| OSK-W-21-2532 | 341 | -60 | 1107 | 452480 | 5434428 | 401 | 2475 |
| OSK-W-21-2533 | 159 | -45 | 321 | 453476 | 5436035 | 405 | 4125 |
| WST-21-0682B | 129 | -64 | 472 | 453106 | 5435066 | 231 | 3325 |
| WST-21-0724 | 131 | -64 | 295 | 453508 | 5435327 | -7 | 3800 |
| WST-21-0726 | 149 | -64 | 454 | 453507 | 5435327 | -7 | 3800 |
| WST-21-0759 | 141 | -43 | 680 | 453321 | 5435235 | 54 | 3600 |
| WST-21-0770 | 129 | -43 | 835 | 453374 | 5435296 | -26 | 3675 |
| WST-21-0791 | 129 | -21 | 355 | 453463 | 5435327 | 32 | 3775 |
| WST-21-0792 | 126 | -20 | 346 | 453463 | 5435327 | 32 | 3775 |
| WST-21-0793A | 127 | -16 | 322 | 453463 | 5435327 | 33 | 3775 |
| WST-21-0794 | 121 | -11 | 315 | 453463 | 5435327 | 33 | 3775 |
| WST-21-0797A | 138 | -46 | 751 | 453321 | 5435235 | 54 | 3600 |
| WST-21-0801 | 139 | -54 | 418 | 452954 | 5435003 | 253 | 3175 |
| WST-21-0807 | 144 | -42 | 508 | 453321 | 5435235 | 54 | 3600 |
| WST-21-0816 | 164 | -4 | 109 | 451960 | 5434734 | 250 | 2175 |
| WST-21-0818 | 167 | 1 | 106 | 451958 | 5434734 | 250 | 2175 |
| WST-21-0822 | 129 | 29 | 124 | 451961 | 5434734 | 251 | 2175 |
| WST-21-0824 | 156 | -70 | 343 | 453506 | 5435327 | -7 | 3800 |
| WST-21-0829 | 131 | -49 | 576 | 453258 | 5435209 | 96 | 3525 |
| WST-21-0838 | 131 | -56 | 366 | 453106 | 5435066 | 231 | 3325 |
Caribou Zone
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.
Zone 27
Mineralization most commonly occurs as replacement-type characterized by 5% to 50% disseminated, stringer, semi-massive or stockwork pyrite, ptygmatic tourmaline veins, quartz-tourmaline crustiform veins, local quartz-carbonate veins, and local visible gold. Mineralization is associated with moderate to strong sericite, weak to strong silica, weak chlorite and carbonate and locally weak fuchsite and is hosted in strongly altered andesites, in or at the contact of the rhyolite, or along the contacts with felsic porphyritic intrusions.
Underdog
Mineralization most commonly occurs in gold-bearing quartz-pyrite (± tourmaline) veins and as disseminated, stringer, semi-massive to massive pyrite with minor sphalerite, chalcopyrite and molybdenite associated with strong sericite and silica alteration. Mineralization is hosted along the intrusive contacts of a three-phase composite felsic porphyritic unit which cross-cuts felsic and mafic volcanic sequences.
Lynx Zone
Mineralization occurs as grey to translucent quartz-carbonate-pyrite-tourmaline veins and pyrite replacement zones and stockworks. Vein-type mineralization is associated with haloes of pervasive sericite-pyrite ± silica alteration and contain sulphides (predominantly pyrite with minor amounts of chalcopyrite, sphalerite, galena, arsenopyrite, and pyrrhotite) and local visible gold. Replacement mineralization is associated with strong pervasive silica-sericite-ankerite ± tourmaline alteration and contains disseminated pyrite from trace to 80% with local visible gold. Pyrite stockworks can form envelopes that reach several tens of metres thick. Fuchsite alteration is common and is spatially constrained to near the gabbros. Mineralization occurs at or near geological contacts between felsic porphyritic or fragmental intrusions and the host rhyolites or gabbros and locally can be hosted along the gabbro-rhyolite contact.
Qualified Person
The scientific and technical content of this news release has been reviewed, prepared and approved by Mr. Louis Grenier, M.Sc.A., P.Geo. (OGQ 800), Director of Exploration for Osisko’s Windfall gold project, who is a “qualified person” as defined by National Instrument 43-101 – Standards of Disclosure for Mineral Projects (“NI 43-101”).
Quality Control and Reporting Protocols
True width determination is estimated at 55-80% of the reported core length interval for the zone. Assays are uncut except where indicated. Intercepts occur within geological confines of major zones but have not been correlated to individual vein domains at this time. Reported intervals include minimum weighted averages of 3.5 g/t Au diluted over core lengths of at least 2.0 metres. NQ core assays were obtained by either 1-kilogram screen fire assay or standard 50-gram fire-assaying-AA finish or gravimetric finish at (i) ALS Laboratories in Val d’Or, Québec, Vancouver, British Colombia, Lima, Peru or Vientiane, Laos (ii) Bureau Veritas in Timmins, Ontario. The 1-kilogram screen assay method is selected by the geologist when samples contain coarse gold or present a higher percentage of pyrite than surrounding intervals. Selected samples are also analyzed for multi-elements, including silver, using a Four Acid Digestion-ICP-MS method at ALS Laboratories. Drill program design, Quality Assurance/Quality Control (“QA/QC”) and interpretation of results is performed by qualified persons employing a QA/QC program consistent with NI 43-101 and industry best practices. Standards and blanks are included with every 20 samples for QA/QC purposes by the Corporation as well as the lab. Approximately 5% of sample pulps are sent to secondary laboratories for check assay.
About the Windfall Gold Deposit
The Windfall gold deposit is located between Val-d’Or and Chibougamau in the Abitibi region of Québec, Canada. The Mineral Resource Estimate (“MRE“) defined by Osisko, as disclosed in the news release dated February 17, 2021 is supported by the technical report entitled “Preliminary Economic Assessment Update for the Windfall Project” dated April 26, 2021 (that includes Windfall Mineral Resource Estimate with an effective date of November 30, 2020), and assuming a cut-off grade of 3.50 g/t Au, comprises 521,000 tonnes at 11.3 g/t Au (189,000 ounces) in the measured mineral resource category, 5,502,000 tonnes at 9.4 g/t Au (1,668,000 ounces) in the indicated mineral resource category and 16,401,000 tonnes at 8.0 g/t Au (4,244,000 ounces) in the inferred mineral resource category. The key assumptions, parameters and methods used to estimate the mineral resource estimate disclosed in the February 17, 2021 news release are further described in the full technical report prepared by BBA Inc. in accordance with NI 43-101 and is available on SEDAR (www.sedar.com) under the Corporation’s issuer profile. The Windfall gold deposit is currently one of the highest-grade resource-stage gold projects in Canada and has world-class scale. Mineralization occurs in three principal zones: Lynx, Main Zone, and Underdog. Mineralization is generally comprised of sub-vertical zones following intrusive porphyry contacts plunging to the northeast. The resources are defined from surface to a depth of 1,600 metres as it now includes the Triple 8 (T8) zone. The resources excluding T8 are defined from surface to a depth of 1,200 metres. The deposit remains open along strike and at depth. Mineralization has been identified at surface in some areas and as deep as 2,625 metres in others with significant potential to extend mineralization down-plunge and at depth.
About Osisko Mining Inc.
Osisko is a mineral exploration company focused on the acquisition, exploration, and development of gold resource properties in Canada. Osisko holds a 100% interest in the high-grade Windfall gold deposit located between Val-d’Or and Chibougamau in Québec and holds a 100% undivided interest in a large area of claims in the surrounding Urban Barry area and nearby Quévillon area (over 2,700 square kilometres).
Cautionary Note Regarding Forward-Looking Information
This news release contains “forward-looking information” within the meaning of the applicable Canadian securities legislation that is based on expectations, estimates, projections and interpretations as at the date of this news release. Any statement that involves predictions, expectations, interpretations, beliefs, plans, projections, objectives, assumptions, future events or performance (often, but not always, using phrases such as “expects”, or “does not expect”, “is expected”, “interpreted”, “management’s view”, “anticipates” or “does not anticipate”, “plans”, “budget”, “scheduled”, “forecasts”, “estimates”, “potential”, “feasibility”, “believes” or “intends” or variations of such words and phrases or stating that certain actions, events or results “may” or “could”, “would”, “might” or “will” be taken to occur or be achieved) are not statements of historical fact and may be forward-looking information and are intended to identify forward-looking information. This news release contains the forward-looking information pertaining to, among other things: the Windfall gold deposit being one of the highest-grade resource-stage gold projects in Canada and having world-class scale; the key assumptions, parameters and methods used to estimate the mineral resource estimate disclosed in this news release; the prospects, if any, of the Windfall gold deposit; timing and ability of Osisko to file a technical report for the mineral resource estimate disclosed in this news release; the timing and ability of Osisko, if at all, to publish a feasibility study for the Windfall gold deposit; the amount and type of drilling to be completed and the timing to complete such drilling; the focus of the remaining infill drilling; the trend of grade increase; the Lynx zone remaining open to expansion down plunge; upgrading a inferred mineral resource to a measured mineral resource or indicated mineral resource category; future drilling at the Windfall gold deposit; the significance of historic exploration activities and results. Such factors include, among others, risks relating to the ability of exploration activities (including drill results) to accurately predict mineralization; errors in management’s geological modelling; the ability of Osisko to complete further exploration activities, including (infill) drilling; property and royalty interests in the Windfall gold deposit; the ability of the Corporation to obtain required approvals; the results of exploration activities; risks relating to mining activities; the global economic climate; metal prices; dilution; environmental risks; and community and non-governmental actions. Although the forward-looking information contained in this news release is based upon what management believes, or believed at the time, to be reasonable assumptions, Osisko cannot assure shareholders and prospective purchasers of securities of the Corporation that actual results will be consistent with such forward-looking information, as there may be other factors that cause results not to be as anticipated, estimated or intended, and neither Osisko nor any other person assumes responsibility for the accuracy and completeness of any such forward-looking information. Osisko does not undertake, and assumes no obligation, to update or revise any such forward-looking statements or forward-looking information contained herein to reflect new events or circumstances, except as may be required by law.
CONTACT INFORMATION:
John Burzynski
Chief Executive Officer
Telephone (416) 363-8653
OSISKO MINING INC. FILES EARLY WARNING REPORT
IN RESPECT OF O3 MINING INC.
Toronto, Ontario (July 14, 2021) – Osisko Mining Inc. (TSX:OSK) (the “Corporation“) announces that it has filed an early warning report in respect of its holdings in O3 Mining Inc. (“O3 Mining“). After giving effect to four trades ending on July 13, 2021, which settled through the facilities of the TSX Venture Exchange, the Corporation acquired an aggregate of 83,400 common shares of O3 Mining (“O3 Shares“), representing approximately 0.12% of the issued and outstanding O3 Shares, for aggregate gross proceeds of $185,309.72 (collectively, the “Acquisitions“).
At the time of the prior early warning report filed by the Corporation in respect of O3 Mining on August 17, 2020 (the “Prior Report“), the Corporation had beneficial ownership of, or control and direction over, 18,277,898 O3 Shares, representing approximately 30.3% of the issued and outstanding O3 Shares on a basic basis (based on there being 60,296,508 O3 Shares issued and outstanding as of the date of the Prior Report).
Since the date of the Prior Report and prior to giving effect to the Acquisitions, O3 Mining issued an aggregate of 7,743,758 O3 Shares, which through no action on the part of the Corporation, resulted in the Corporation’s ownership in O3 Shares being diluted to approximately 26.9% of the issued and outstanding O3 Shares on a basic basis (based on there being 68,040,266 O3 Shares issued and outstanding as of the date hereof and Osisko holding 18,277,898 O3 Shares (as disclosed in the Prior Report)).
Immediately after giving effect to the Acquisitions, Osisko had beneficial ownership of, or control and direction over, 18,361,298 O3 Shares, representing approximately 27.0% of the issued and outstanding O3 Shares on a basic basis (based on there being 68,040,266 O3 Shares issued and outstanding as of the date hereof).
The Corporation acquired the O3 Shares for investment purposes. The Corporation intends to review, on a continuous basis, various factors related to its investment in O3 Mining, and may decide to acquire or dispose of additional securities of O3 Mining as future circumstances may dictate.
This news release is being issued in accordance with National Instrument 62-103 – The Early Warning System and Related Take-Over Bid and Insider Reporting Issues in connection with the filing of an early warning report dated July 14, 2021. The early warning report respecting the Acquisitions has been filed on SEDAR (www.sedar.com) under O3 Mining’s issuer profile. To obtain a copy of the early warning report filed by the Corporation, please contact John Burzynski at (416) 363-8653 or refer to SEDAR (www.sedar.com) under O3 Mining’s issuer profile.
For further information on the Corporation please contact:
John Burzynski
President & Chief Executive Officer
Telephone: (416) 363-8653
The Corporation’s head office is located at 155 University Avenue, Suite 1440, Toronto, Ontario M5H 3B7.
OSISKO WINDFALL INFILL AND EXPANSION DRILLING CONTINUES TO ADD HIGH-GRADE
75.4 g/t Au Over 3.2 Metres in Triple Lynx
103 g/t Au Over 2.3 Metres and 105 g/t Au Over 2.0 Metres in Lynx
(Toronto, July 07, 2021) Osisko Mining Inc. (OSK:TSX. “Osisko” or the “Corporation”) is pleased to provide new analytical results from the ongoing drill program at its 100% owned Windfall gold project located in the Abitibi greenstone belt, Urban Township, Eeyou Istchee James Bay, Québec.
Significant new analytical results presented below include 60 intercepts in 20 drill holes (5 from surface, 15 from underground) and 12 wedges. The infill intercepts are located inside defined February 2021 mineral resource estimate (“MRE”) blocks (see Osisko news release dated February 17, 2021). The expansion intercepts are located outside the February 2021 MRE blocks and either expand resource wireframes or are in a defined zone or corridor but do not yet correlate to a specific wireframe.
Osisko Chief Executive Officer John Burzynski commented: “Infill and expansion drilling from across the Windfall deposit continues to progress well. In particular, the focused infill drilling in all the Lynx zones consistently returns well distributed high-grade and expansion drilling is adding ounces. WST-21-0810 and OSK-W-21-2123-W5 both extended Triple Lynx wireframes, 25 metres and 40 meters at depth, respectively.”
Selected high-grade intercepts include: 75.4 g/t Au over 3.2 metres and 86.9 g/t Au over 2.4 metres in OSK-W-21-2470-W4; 103 g/t Au over 2.3 metres in WST-21-0722; 105 g/t Au over 2.0 metres in WST-21-0716; 29.5 g/t Au over 6.0 metres in OSK-W-21-2067-W8; 87.1 g/t Au over 2.0 metres in OSK-W-21-2067-W7; 42.3 g/t Au over 3.0 metres in OSK-W-21-1882-W3; 60.6 g/t Au over 2.0 metres in WST-21-0721 and 30.7 g/t Au over 3.9 metres in WST-21-0682B. Maps showing hole locations and full analytical results are available at www.osiskomining.com.
Infill Drilling
| Hole No. | From (m) | To (m) | Interval (m) | Au (g/t) uncut | Au (g/t) cut to 100 g/t | Zone | Corridor |
| OSK-W-21-1882-W3 | 829.3 | 832.3 | 3.0 | 42.3 | UDD_4102 | Underdog | |
| including | 831.3 | 832.3 | 1.0 | 85.2 | |||
| 936.0 | 938.0 | 2.0 | 4.12 | UDD_4511 | Underdog | ||
| including | 936.0 | 936.5 | 0.5 | 16.3 | |||
| OSK-W-21-2067-W7 | 1136.0 | 1138.0 | 2.0 | 87.1 | 20.1 | TLX_3172 | Triple Lynx |
| including | 1136.8 | 1137.2 | 0.4 | 435 | 100 | ||
| OSK-W-21-2067-W8 | 1112.0 | 1118.0 | 6.0 | 29.5 | 20.1 | TLX_3170 | Triple Lynx |
| including | 1115.4 | 1116.1 | 0.7 | 181 | 100 | ||
| OSK-W-21-2275-W7 | 675.0 | 677.0 | 2.0 | 4.70 | TLX_3196 | Triple Lynx | |
| including | 675.4 | 676.0 | 0.6 | 14.6 | |||
| OSK-W-21-2470-W4 | 956.0 | 958.0 | 2.0 | 3.85 | TLX_3163 | Triple Lynx | |
| 961.6 | 964.0 | 2.4 | 86.9 | 35.3 | TLX_3163 | Triple Lynx | |
| including | 962.0 | 962.8 | 0.8 | 255 | 100 | ||
| 987.8 | 991.0 | 3.2 | 75.4 | 45.6 | TLX_3164 | Triple Lynx | |
| including | 987.8 | 988.5 | 0.7 | 236 | 100 | ||
| OSK-W-21-2478-W5 | 860.0 | 862.1 | 2.1 | 16.7 | TLX_3184 | Triple Lynx | |
| including | 860.7 | 861.7 | 1.0 | 34.1 | |||
| OSK-W-21-2479-W4 | 651.3 | 653.3 | 2.0 | 41.5 | 40.3 | UDD_4100 | Underdog |
| including | 653.0 | 653.3 | 0.3 | 108 | 100 | ||
| OSK-W-21-2503-W1 | 1022.8 | 1024.8 | 2.0 | 9.75 | TLX_3164 | Triple Lynx | |
| including | 1024.2 | 1024.8 | 0.6 | 25.6 | |||
| OSK-W-21-2520 | 639.0 | 643.2 | 4.2 | 9.87 | CA2_2206 | Caribou | |
| including | 639.0 | 639.3 | 0.3 | 64.6 | |||
| and | 642.5 | 643.2 | 0.7 | 26.3 | |||
| OSK-W-21-2522-W1 | 655.2 | 657.3 | 2.1 | 10.0 | LXM_3304 | Lynx | |
| including | 656.2 | 656.6 | 0.4 | 41.6 | |||
| 747.1 | 749.4 | 2.3 | 4.58 | LXM_3345 | Lynx | ||
| including | 747.8 | 748.4 | 0.6 | 17.1 | |||
| OSK-W-21-2523 | 503.5 | 507.7 | 4.2 | 4.27 | CA2_2247 | Caribou | |
| including | 503.5 | 504.0 | 0.5 | 13.1 | |||
| 511.0 | 513.1 | 2.1 | 3.61 | CA2_2241 | Caribou | ||
| 522.7 | 529.0 | 6.3 | 8.53 | CA2_2233 | Caribou | ||
| including | 528.4 | 529.0 | 0.6 | 39.7 | |||
| OSK-W-21-2532 | 452.0 | 454.0 | 2.0 | 24.7 | Caribou_2232 | Caribou | |
| including | 453.0 | 454.0 | 1.0 | 49.0 | |||
| OSK-W-21-2534 | 558.4 | 560.6 | 2.2 | 9.81 | Caribou_2247 | Caribou | |
| WST-21-0682A | 89.8 | 92.0 | 2.2 | 19.8 | LXM_3339 | Lynx | |
| including | 90.1 | 91.0 | 0.9 | 47.7 | |||
| WST-21-0682B | 105.5 | 107.6 | 2.1 | 6.82 | LXM_3311 | Lynx | |
| including | 106.9 | 107.3 | 0.4 | 25.7 | |||
| 349.0 | 352.0 | 3.0 | 32.7 | 29.9 | TLX_3166 | Triple Lynx | |
| including | 349.0 | 349.3 | 0.3 | 128 | 100 | ||
| 357.6 | 361.5 | 3.9 | 30.7 | TLX_3166 | Triple Lynx | ||
| including | 358.0 | 358.6 | 0.6 | 68.0 | |||
| and | 360.8 | 361.5 | 0.7 | 78.0 | |||
| 363.5 | 365.7 | 2.2 | 5.78 | TLX_3166 | Triple Lynx | ||
| 456.0 | 458.0 | 2.0 | 24.5 | TLX_3130 | Triple Lynx | ||
| including | 456.0 | 456.6 | 0.6 | 74.6 | |||
| WST-21-0716 | 26.5 | 28.5 | 2.0 | 22.1 | LXM_3303 | Lynx | |
| including | 27.1 | 28.0 | 0.9 | 47.4 | |||
| 81.0 | 83.0 | 2.0 | 105 | 33.1 | LXM_3304 | Lynx | |
| including | 81.4 | 82.0 | 0.6 | 339 | 100 | ||
| 87.0 | 89.0 | 2.0 | 17.7 | LXM_3304 | Lynx | ||
| including | 87.0 | 87.7 | 0.7 | 50.4 | |||
| WST-21-0720 | 80.2 | 82.5 | 2.3 | 8.25 | LXM_3336 | Lynx | |
| including | 80.8 | 81.3 | 0.5 | 35.9 | |||
| 92.3 | 94.7 | 2.4 | 8.99 | LXM_3304 | Lynx | ||
| WST-21-0721 | 92.0 | 94.0 | 2.0 | 60.6 | 60.2 | LXM_3304 | Lynx |
| including | 92.4 | 93.6 | 1.2 | 101 | 100 | ||
| WST-21-0722 | 25.3 | 27.6 | 2.3 | 103 | 25.2 | LXM_3303 | Lynx |
| including | 26.5 | 27.0 | 0.5 | 459 | 100 | ||
| WST-21-0759 | 325.1 | 327.2 | 2.1 | 3.96 | TLX_3131 | Triple Lynx | |
| WST-21-0778 | 313.4 | 315.7 | 2.3 | 5.23 | TLX_3131 | Triple Lynx | |
| including | 314.4 | 315.0 | 0.6 | 18.0 | |||
| 511.0 | 513.0 | 2.0 | 28.3 | LX4_3429 | Lynx 4 | ||
| including | 512.0 | 513.0 | 1.0 | 51.5 | |||
| WST-21-0789B | 325.6 | 327.9 | 2.3 | 8.20 | TLX_3166 | Triple Lynx | |
| including | 325.9 | 326.8 | 0.9 | 17.0 | |||
| WST-21-0801 | 306.5 | 308.6 | 2.1 | 11.5 | LSW_3556 | Lynx Southwest | |
| including | 307.0 | 307.7 | 0.7 | 33.7 | |||
| WST-21-0810 | 344.0 | 346.0 | 2.0 | 4.77 | TLX_3131 | Triple Lynx | |
| 373.0 | 376.0 | 3.0 | 5.08 | TLX_3167 | Triple Lynx | ||
| 531.0 | 533.0 | 2.0 | 33.8 | 25.2 | LX4_3450 | Lynx 4 | |
| including | 532.1 | 532.6 | 0.5 | 135 | 100 | ||
| 736.8 | 738.9 | 2.1 | 22.2 | LX4_3412 | Lynx 4 | ||
| including | 737.6 | 737.9 | 0.3 | 78.9 | |||
| WST-21-0815 | 81.0 | 83.0 | 2.0 | 4.09 | Z27_1102 | Zone 27 | |
| WST-21-0819A | 79.0 | 81.0 | 2.0 | 3.89 | Z27_1115 | Zone 27 | |
| including | 80.1 | 81.0 | 0.9 | 8.45 | |||
| WST-21-0820 | 92.5 | 95.0 | 2.5 | 3.56 | Z27_1102 | Zone 27 | |
| WST-21-0827 | 247.7 | 250.0 | 2.3 | 13.4 | TLX_3161 | Triple Lynx |
Notes: True widths are estimated at 55 – 80% of the reported core length interval. See “Quality Control and Reporting Protocols” below. Z27 = Zone 27, CA2 = Caribou 2, LSW = Lynx Southwest, LXM = Lynx Main, LX4 = Lynx 4, TLX = Triple Lynx, and UDD = Underdog.
Expansion Drilling
| Hole No. | From (m) | To (m) | Interval (m) | Au (g/t) uncut | Au (g/t) cut to 100 g/t | Zone | Corridor |
| OSK-W-21-2123-W5 | 1154.6 | 1159.0 | 4.4 | 16.6 | Triple Lynx | Lynx | |
| including | 1154.6 | 1155.0 | 0.4 | 42.9 | |||
| and | 1156.0 | 1156.4 | 0.4 | 61.4 | |||
| and | 1157.6 | 1158.0 | 0.4 | 41.9 | |||
| 1203.0 | 1205.0 | 2.0 | 5.59 | Triple Lynx | Lynx | ||
| including | 1203.8 | 1204.1 | 0.3 | 13.3 | |||
| 1209.0 | 1211.0 | 2.0 | 4.32 | Triple Lynx | Lynx | ||
| OSK-W-21-2470-W3 | 956.8 | 958.8 | 2.0 | 45.7 | 30.6 | Triple Lynx | Lynx |
| including | 957.3 | 957.9 | 0.6 | 151 | 100 | ||
| 989.8 | 991.8 | 2.0 | 16.2 | Triple Lynx | Lynx | ||
| including | 991.2 | 991.5 | 0.3 | 80.1 | |||
| OSK-W-21-2479-W4 | 426.0 | 428.0 | 2.0 | 19.2 | Zone 27 | Main Zone | |
| including | 427.3 | 428.0 | 0.7 | 49.9 | |||
| OSK-W-21-2480-W3 | 731.5 | 733.5 | 2.0 | 26.4 | Lynx | Lynx | |
| including | 732.5 | 733.5 | 1.0 | 51.8 | |||
| OSK-W-21-2523 | 409.5 | 412.0 | 2.5 | 7.42 | Caribou | Main Zone | |
| including | 409.5 | 410.3 | 0.8 | 16.2 | |||
| OSK-W-21-2540 | 824.5 | 826.5 | 2.0 | 4.94 | Lynx Main | Lynx | |
| including | 825.9 | 826.5 | 0.6 | 15.8 | |||
| WST-21-0682B | 375.0 | 377.0 | 2.0 | 4.08 | Lynx SW | Lynx | |
| 384.0 | 386.1 | 2.1 | 5.90 | Lynx SW | Lynx | ||
| including | 385.6 | 386.1 | 0.5 | 24.2 | |||
| WST-21-0759 | 29.7 | 32.0 | 2.3 | 6.83 | Lynx Main | Lynx | |
| WST-21-0778 | 323.0 | 325.0 | 2.0 | 10.7 | Triple Lynx | Lynx | |
| including | 323.3 | 323.6 | 0.3 | 69.0 | |||
| WST-21-0789B | 371.0 | 373.0 | 2.0 | 4.42 | Triple Lynx | Lynx | |
| including | 372.6 | 373.0 | 0.4 | 19.3 | |||
| WST-21-0810 | 450.2 | 453.0 | 2.8 | 25.2 | Triple Lynx | Lynx | |
| including | 452.5 | 453.0 | 0.5 | 96.7 |
Notes: True widths are estimated at 55 – 80% of the reported core length interval. See “Quality Control and Reporting Protocols” below. SW = Southwest.
Drill hole location
| Hole Number | Azimuth (°) | Dip (°) | Length (m) | UTM E | UTM N | Elevation | Section |
| OSK-W-21-1882-W3 | 328 | -58 | 1004 | 452469 | 5434405 | 400 | 2450 |
| OSK-W-21-2067-W7 | 123 | -53 | 1166 | 453241 | 5435697 | 416 | 3750 |
| OSK-W-21-2067-W8 | 123 | -53 | 1191 | 453241 | 5435697 | 416 | 3750 |
| OSK-W-21-2123-W5 | 126 | -57 | 1332 | 453235 | 5435774 | 409 | 3800 |
| OSK-W-21-2275-W7 | 127 | -49 | 1182 | 452888 | 5435583 | 409 | 3400 |
| OSK-W-21-2470-W3 | 132 | -59 | 1209 | 453304 | 5435639 | 415 | 3775 |
| OSK-W-21-2470-W4 | 132 | -59 | 1155 | 453304 | 5435639 | 415 | 3775 |
| OSK-W-21-2478-W5 | 128 | -54 | 1166 | 452997 | 5435607 | 425 | 3500 |
| OSK-W-21-2479-W4 | 344 | -55 | 761 | 452315 | 5434419 | 399 | 2325 |
| OSK-W-21-2480-W3 | 121 | -55 | 810 | 453412 | 5435633 | 412 | 3875 |
| OSK-W-21-2503-W1 | 126 | -58 | 1161 | 453333 | 5435641 | 413 | 3800 |
| OSK-W-21-2520 | 337 | -56 | 1140 | 452596 | 5434392 | 401 | 2550 |
| OSK-W-21-2522-W1 | 128 | -54 | 1116 | 453451 | 5435594 | 411 | 3900 |
| OSK-W-21-2523 | 340 | -58 | 1107 | 452480 | 5434428 | 402 | 2475 |
| OSK-W-21-2532 | 341 | -60 | 1107 | 452480 | 5434428 | 401 | 2475 |
| OSK-W-21-2534 | 343 | -59 | 1203 | 452549 | 5434363 | 401 | 2500 |
| OSK-W-21-2540 | 117 | -60 | 1025 | 453465 | 5435640 | 410 | 3925 |
| WST-21-0682A | 133 | -66 | 139 | 453106 | 5435066 | 231 | 3325 |
| WST-21-0682B | 129 | -64 | 472 | 453106 | 5435066 | 231 | 3325 |
| WST-21-0716 | 160 | -3 | 97 | 453359 | 5435194 | 83 | 3625 |
| WST-21-0720 | 162 | 2 | 103 | 453359 | 5435194 | 84 | 3625 |
| WST-21-0721 | 166 | -1 | 103 | 453359 | 5435194 | 83 | 3625 |
| WST-21-0722 | 166 | 1 | 106 | 453359 | 5435194 | 84 | 3625 |
| WST-21-0759 | 141 | -43 | 680 | 453321 | 5435235 | 54 | 3600 |
| WST-21-0778 | 145 | -31 | 534 | 453374 | 5435296 | -26 | 3675 |
| WST-21-0789B | 125 | -55 | 381 | 453106 | 5435066 | 231 | 3325 |
| WST-21-0801 | 139 | -54 | 418 | 452954 | 5435003 | 253 | 3175 |
| WST-21-0810 | 138 | -47 | 765 | 453257 | 5435209 | 96 | 3525 |
| WST-21-0815 | 159 | 0 | 99 | 451960 | 5434734 | 250 | 2175 |
| WST-21-0819A | 173 | -2 | 100 | 451957 | 5434735 | 250 | 2175 |
| WST-21-0820 | 179 | 18 | 115 | 451957 | 5434735 | 250 | 2175 |
| WST-21-0827 | 145 | -66 | 313 | 453507 | 5435327 | -7 | 3800 |
Caribou Zone
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.
Zone 27
Mineralization most commonly occurs as replacement-type characterized by 5% to 50% disseminated, stringer, semi-massive or stockwork pyrite, ptygmatic tourmaline veins, quartz-tourmaline crustiform veins, local quartz-carbonate veins, and local visible gold. Mineralization is associated with moderate to strong sericite, weak to strong silica, weak chlorite and carbonate and locally weak fuchsite and is hosted in strongly altered andesites, in or at the contact of the rhyolite, or along the contacts with felsic porphyritic intrusions.
Underdog
Mineralization most commonly occurs in gold-bearing quartz-pyrite (± tourmaline) veins and as disseminated, stringer, semi-massive to massive pyrite with minor sphalerite, chalcopyrite and molybdenite associated with strong sericite and silica alteration. Mineralization is hosted along the intrusive contacts of a three-phase composite felsic porphyritic unit which cross-cuts felsic and mafic volcanic sequences.
Lynx Zone
Mineralization occurs as grey to translucent quartz-carbonate-pyrite-tourmaline veins and pyrite replacement zones and stockworks. Vein-type mineralization is associated with haloes of pervasive sericite-pyrite ± silica alteration and contain sulphides (predominantly pyrite with minor amounts of chalcopyrite, sphalerite, galena, arsenopyrite, and pyrrhotite) and local visible gold. Replacement mineralization is associated with strong pervasive silica-sericite-ankerite ± tourmaline alteration and contains disseminated pyrite from trace to 80% with local visible gold. Pyrite stockworks can form envelopes that reach several tens of metres thick. Fuchsite alteration is common and is spatially constrained to near the gabbros. Mineralization occurs at or near geological contacts between felsic porphyritic or fragmental intrusions and the host rhyolites or gabbros and locally can be hosted along the gabbro-rhyolite contact.
Qualified Person
The scientific and technical content of this news release has been reviewed, prepared and approved by Mr. Louis Grenier, M.Sc.A., P.Geo. (OGQ 800), Director of Exploration for Osisko’s Windfall gold project, who is a “qualified person” as defined by National Instrument 43-101 – Standards of Disclosure for Mineral Projects (“NI 43-101”).
Quality Control and Reporting Protocols
True width determination is estimated at 55-80% of the reported core length interval for the zone. Assays are uncut except where indicated. Intercepts occur within geological confines of major zones but have not been correlated to individual vein domains at this time. Reported intervals include minimum weighted averages of 3.5 g/t Au diluted over core lengths of at least 2.0 metres. NQ core assays were obtained by either 1-kilogram screen fire assay or standard 50-gram fire-assaying-AA finish or gravimetric finish at (i) ALS Laboratories in Val d’Or, Québec, Vancouver, British Colombia, Lima, Peru or Vientiane, Laos (ii) Bureau Veritas in Timmins, Ontario. The 1-kilogram screen assay method is selected by the geologist when samples contain coarse gold or present a higher percentage of pyrite than surrounding intervals. Selected samples are also analyzed for multi-elements, including silver, using a Four Acid Digestion-ICP-MS method at ALS Laboratories. Drill program design, Quality Assurance/Quality Control (“QA/QC”) and interpretation of results is performed by qualified persons employing a QA/QC program consistent with NI 43-101 and industry best practices. Standards and blanks are included with every 20 samples for QA/QC purposes by the Corporation as well as the lab. Approximately 5% of sample pulps are sent to secondary laboratories for check assay.
About the Windfall Gold Deposit
The Windfall gold deposit is located between Val-d’Or and Chibougamau in the Abitibi region of Québec, Canada. The Mineral Resource Estimate (“MRE“) defined by Osisko, as disclosed in the news release dated February 17, 2021 is supported by the technical report entitled “Preliminary Economic Assessment Update for the Windfall Project” dated April 26, 2021 (that includes Windfall Mineral Resource Estimate with an effective date of November 30, 2020), and assuming a cut-off grade of 3.50 g/t Au, comprises 521,000 tonnes at 11.3 g/t Au (189,000 ounces) in the measured mineral resource category, 5,502,000 tonnes at 9.4 g/t Au (1,668,000 ounces) in the indicated mineral resource category and 16,401,000 tonnes at 8.0 g/t Au (4,244,000 ounces) in the inferred mineral resource category. The key assumptions, parameters and methods used to estimate the mineral resource estimate disclosed in the February 17, 2021 news release are further described in the full technical report prepared by BBA Inc. in accordance with NI 43-101 and is available on SEDAR (www.sedar.com) under the Corporation’s issuer profile. The Windfall gold deposit is currently one of the highest-grade resource-stage gold projects in Canada and has world-class scale. Mineralization occurs in three principal zones: Lynx, Main Zone, and Underdog. Mineralization is generally comprised of sub-vertical zones following intrusive porphyry contacts plunging to the northeast. The resources are defined from surface to a depth of 1,600 metres as it now includes the Triple 8 (T8) zone. The resources excluding T8 are defined from surface to a depth of 1,200 metres. The deposit remains open along strike and at depth. Mineralization has been identified at surface in some areas and as deep as 2,625 metres in others with significant potential to extend mineralization down-plunge and at depth.
About Osisko Mining Inc.
Osisko is a mineral exploration company focused on the acquisition, exploration, and development of gold resource properties in Canada. Osisko holds a 100% interest in the high-grade Windfall gold deposit located between Val-d’Or and Chibougamau in Québec and holds a 100% undivided interest in a large area of claims in the surrounding Urban Barry area and nearby Quévillon area (over 2,700 square kilometres).
Cautionary Note Regarding Forward-Looking Information
This news release contains “forward-looking information” within the meaning of the applicable Canadian securities legislation that is based on expectations, estimates, projections and interpretations as at the date of this news release. Any statement that involves predictions, expectations, interpretations, beliefs, plans, projections, objectives, assumptions, future events or performance (often, but not always, using phrases such as “expects”, or “does not expect”, “is expected”, “interpreted”, “management’s view”, “anticipates” or “does not anticipate”, “plans”, “budget”, “scheduled”, “forecasts”, “estimates”, “potential”, “feasibility”, “believes” or “intends” or variations of such words and phrases or stating that certain actions, events or results “may” or “could”, “would”, “might” or “will” be taken to occur or be achieved) are not statements of historical fact and may be forward-looking information and are intended to identify forward-looking information. This news release contains the forward-looking information pertaining to, among other things: the Windfall gold deposit being one of the highest-grade resource-stage gold projects in Canada and having world-class scale; the key assumptions, parameters and methods used to estimate the mineral resource estimate disclosed in this news release; the prospects, if any, of the Windfall gold deposit; timing and ability of Osisko to file a technical report for the mineral resource estimate disclosed in this news release; the timing and ability of Osisko, if at all, to publish a feasibility study for the Windfall gold deposit; the amount and type of drilling to be completed and the timing to complete such drilling; the focus of the remaining infill drilling; the trend of grade increase; the Lynx zone remaining open to expansion down plunge; upgrading a inferred mineral resource to a measured mineral resource or indicated mineral resource category; future drilling at the Windfall gold deposit; the significance of historic exploration activities and results. Such factors include, among others, risks relating to the ability of exploration activities (including drill results) to accurately predict mineralization; errors in management’s geological modelling; the ability of Osisko to complete further exploration activities, including (infill) drilling; property and royalty interests in the Windfall gold deposit; the ability of the Corporation to obtain required approvals; the results of exploration activities; risks relating to mining activities; the global economic climate; metal prices; dilution; environmental risks; and community and non-governmental actions. Although the forward-looking information contained in this news release is based upon what management believes, or believed at the time, to be reasonable assumptions, Osisko cannot assure shareholders and prospective purchasers of securities of the Corporation that actual results will be consistent with such forward-looking information, as there may be other factors that cause results not to be as anticipated, estimated or intended, and neither Osisko nor any other person assumes responsibility for the accuracy and completeness of any such forward-looking information. Osisko does not undertake, and assumes no obligation, to update or revise any such forward-looking statements or forward-looking information contained herein to reflect new events or circumstances, except as may be required by law.
CONTACT INFORMATION:
John Burzynski
Chief Executive Officer
Telephone (416) 363-8653
OSISKO RELEASES 2020 SUSTAINABLE DEVELOPMENT REPORT
(Toronto, July 06, 2021) Osisko Mining Inc. (OSK:TSX “Osisko” or the “Corporation”), is pleased to announce that it has published its 2020 Sustainable Development report which provides a detailed overview of the Company’s environmental, social, and governance (ESG) performance and economic contributions to the communities in which we operate. The report is available on the Osisko website www.osiskomining.com in English and French.
In 2020, Osisko Mining worked to responsibly manage the effects of the COVID-19 pandemic; our top focus was keeping our workers and communities healthy and safe. We continued to deliver on our commitment of being a good corporate citizen by engaging with stakeholders, concentrating on environmental stewardship, and being an economic stimulus for our host communities.
We strengthened our policies covering Health & Safety, Human Resources, Environment and Community Relations. We lowered our lost time incident frequency rate (LTIFR) by 20% and have maintained a safe work environment for our employees and contractors at Windfall since we started exploration activities in 2015. We continue to minimize our effect on the environment through rigorous water, waste and spill management, land reclamation and advance closure planning.
The report covers Osisko Mining Inc. activities on our Windfall, Quévillon, and Urban Barry projects. It describes our ESG performance from January 1 to December 31, 2020 and gives comparative data from previous years.
About Osisko Mining Inc.
Osisko is a mineral exploration company focused on the acquisition, exploration, and development of gold resource properties in Canada. Osisko holds a 100% interest in the high-grade Windfall gold deposit located between Val-d’Or and Chibougamau in Québec and holds a 100% undivided interest in a large area of claims in the surrounding Urban Barry area and nearby Quévillon area (over 2,700 square kilometres).
CONTACT INFORMATION:
John Burzynski
Chief Executive Officer
Telephone (416) 363-8653
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