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Osisko Intersects 30 g/t Au Over 2.4 Metres at Windfall

 

 

 

 

 

Osisko Mining Inc. (TSX:OSK) is pleased to provide new results from the ongoing drill program at its 100% owned Windfall Lake gold project located in the Abitibi greenstone belt, Urban Township, Eeyou Istchee James Bay, Québec. The 800,000 metre drill program combines definition, expansion and exploration drilling in and around the main Windfall gold deposit and the adjacent Lynx deposit (located immediately NE of Windfall). Significant new analytical results from 52 intercepts in 40 drill holes focused on infill and expansion drilling in the Underdog, Caribou, Zone 27 and Mallard corridors of the Windfall deposit are presented below.

 

 

Highlights from the new results include: 30 g/t Au over 2.4 metres, in OSK-W-17-1141; 10.2 g/t Au over 5.4 metres in OSK-W-17-1125, 26.0 g/t Au over 2.2 metres in OSK-W-17-1125-W3 and 5.38 g/t Au over 9.0 metres in OSK-W-17-1186. 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-17-885-W2 1199.0 1201.0 2.0 10.8   FW0 FW Underdog
including 1199.0 1200.0 1.0 21.3  
OSK-W-17-935 80.0 82.8 2.8 3.34   Mallard HW Mallard
including 82.0 82.8 0.8 9.71  
OSK-W-17-1013 9.2 12.0 2.8 4.56   27 Zone 27
including 9.6 10.1 0.5 24.9  
OSK-W-17-1025 94.9 96.9 2.0 4.17   TBD Caribou
OSK-W-17-1026 83.6 85.9 2.3 4.93   27 infill Zone 27
including 85.0 85.9 0.9 12.4  
  92.7 95.9 3.2 4.38   27 infill Zone 27
including 94.8 95.9 1.1 11.2  
OSK-W-17-1028 727.5 729.5 2.0 6.77   Caribou Extn Caribou
OSK-W-17-1042 84.0 86.3 2.3 3.53   27 infill Zone 27
OSK-W-17-1050 39.7 41.7 2.0 11.2   Z27 Zone 27
OSK-W-17-1065 31.9 34.2 2.3 3.28   Mallard 2 Mallard
OSK-W-17-1066 214.5 216.5 2.0 4.21   Vein Caribou
OSK-W-17-1095 113.0 116.0 3.0 4.09   27 infill Zone 27
OSK-W-17-1105 468.0 470.0 2.0 3.42   New TBD
including 468.0 469.0 1.0 6.71  
  772.0 774.0 2.0 4.49   27 Zone 27
including 772.3 772.9 0.6 14.5  
OSK-W-17-1125 753.6 759.0 5.4 10.2   FW2 Underdog
including 755.9 757.2 1.3 36.3  
OSK-W-17-1125-W3 516.8 519.0 2.2 26.0   Wolf HW Caribou
including 517.5 518.2 0.7 80.5  
OSK-W-17-1139 520.0 523.4 3.4 4.87   CN1 FW Caribou
including 521.6 521.9 0.3 19.8  
OSK-W-17-1140 937.3 942.0 4.7 3.56   27 Zone 27
OSK-W-17-1141 59.4 61.8 2.4 30.0   27 infill Zone 27
including 59.4 61.0 1.6 44.7  
  71.7 74.0 2.3 8.04   27 infill Zone 27
including 73.4 74.0 0.6 28.0  
OSK-W-17-1142 142.0 144.0 2.0 3.07   27 HW infill Zone 27
OSK-W-17-1147-W1 798.0 800.4 2.4 3.36   TBD Shear
  909.0 911.0 2.0 3.94   TBD Caribou
OSK-W-17-1152 367.0 369.0 2.0 5.67   FW1 Underdog
including 368.0 368.6 0.6 16.6  
OSK-W-17-1155 327.0 329.7 2.7 3.64   VNCR Mallard
including 329.0 329.7 0.7 12.9  
OSK-W-17-1158 596.0 598.4 2.4 4.12   Caribou Extn Caribou
including 597.0 597.8 0.8 10.6  
OSK-W-17-1168 544.0 546.6 2.6 3.99   VNCR Caribou
including 546.0 546.6 0.6 15.4  
OSK-W-17-1179 742.8 745.5 2.7 4.56   New Underdog
including 742.8 743.7 0.9 11.6  
OSK-W-17-1186 228.0 237.0 9.0 5.38   Caribou Caribou
including 229.1 229.6 0.5 28.4  
including 236.0 237.0 1.0 23.6  
  863.0 866.0 3.0 15.7   FW3U Underdog
including 863.0 864.6 1.6 27.5  
OSK-W-17-1188 147.5 149.9 2.4 3.09   27 Zone 27
including 148.9 149.9 1.0 6.97  
  167.8 169.8 2.0 3.28   27 infill Zone 27
OSK-W-17-1196 155.5 158.0 2.5 3.26   27 infill Zone 27
OSK-W-17-1209 236.4 239.2 2.8 4.68   FW4 Underdog
including 236.4 237.1 0.7 17.2  
OSK-W-17-1212 215.0 217.0 2.0 6.87   Mallard Mallard
including 216.0 217.0 1.0 13.2  
OSK-W-17-1220 197.7 202.0 4.3 4.63   27 infill Zone 27
OSK-W-17-1221 707.4 709.4 2.0 7.28   Caribou 1 Caribou
including 707.4 708.0 0.6 23.7  
  715.8 719.7 3.9 3.45   Caribou 1 Caribou
OSK-W-17-1224 70.3 73.1 2.8 15.7   Mallard 2 Mallard
including 72.7 73.1 0.4 44.2  
OSK-W-17-1226 743.4 746.2 2.8 3.43   Caribou Extn Caribou
including 743.4 744.0 0.6 8.96  
  765.0 767.0 2.0 3.78   Caribou Extn Caribou
including 765.0 765.6 0.6 11.6  
  852.7 855.0 2.3 3.42   CN2 Caribou
OSK-W-17-1227 419.9 422.0 2.1 4.37   Vein Caribou
including 420.4 421.1 0.7 12.9  
  619.0 621.0 2.0 3.62   New TDB
OSK-W-17-1228 50.7 53.0 2.3 7.59   Vein Underdog
OSK-W-17-1232 149.0 151.5 2.5 5.50   27 infill Zone 27
  183.0 186.0 3.0 3.99   27 infill Zone 27
OSK-W-17-1243 99.6 101.6 2.0 5.23   27 infill Zone 27
including 101.0 101.6 0.6 13.6  
OSK-W-17-1246 34.5 39.9 5.4 5.62   27 HW infill Zone 27
OSK-W-17-1252 18.5 21.0 2.5 3.55   Mallard Mallard
including 19.3 20.3 1.0 8.74  
OSK-W-17-1253 43.0 47.3 4.3 4.88   27 Z27
  56.0 59.0 3.0 3.68   27 Z27

 

Notes:

 

  1. True widths are estimated at 65 – 80% of the reported core length interval. See “Quality Control” below.
  2. Definitions: FW = Foot Wall, HW = Hanging Wall, VNCR = Crustiform vein

 

 

Hole Number Azimuth
(o)
Dip
(o)
Length
(m)
UTM E UTM N Section
OSK-W-17-885-W2 334 -69 1229 452861 5434494 2850
OSK-W-17-935 327 -51 474 452025 5434827 2275
OSK-W-17-1013 333 -48 24 452246 5434866 2475
OSK-W-17-1025 330 -58 990 452486 5434439 2475
OSK-W-17-1026 129 -45 147 452119 5434787 2325
OSK-W-17-1028 326 -59 807 452860 5434814 3000
OSK-W-17-1042 146 -52 156 452119 5434786 2325
OSK-W-17-1050 148 -49 106 452053 5434749 2250
OSK-W-17-1065 334 -56 330 452290 5434903 2550
OSK-W-17-1066 332 -56 639 452488 5434436 2475
OSK-W-17-1095 147 -50 147 451959 5434734 2175
OSK-W-17-1105 328 -71 834 452920 5434843 3050
OSK-W-17-1125 331 -58 975 452563 5434568 2625
OSK-W-17-1125-W3 331 -58 1086 452563 5434568 2625
OSK-W-17-1139 333 -56 1092 452473 5434470 2500
OSK-W-17-1140 336 -55 975 453006 5434522 2975
OSK-W-17-1141 236 -65 252 452143 5434747 2325
OSK-W-17-1142 324 -45 275 452202 5434628 2325
OSK-W-17-1147-W1 335 -52 1212 453241 5434381 3125
OSK-W-17-1152 330 -53 885 451738 5434293 1750
OSK-W-17-1155 332 -71 477 452451 5435008 2725
OSK-W-17-1158 331 -59 696 453046 5434871 3175
OSK-W-17-1168 329 -57 717 453464 5435090 3650
OSK-W-17-1179 332 -57 777 451560 5434376 1650
OSK-W-17-1186 331 -54 984 452419 5434554 2475
OSK-W-17-1188 318 -57 201 452067 5434618 2200
OSK-W-17-1196 310 -59 210 452066 5434618 2200
OSK-W-17-1209 331 -60 429 451456 5434453 1600
OSK-W-17-1212 330 -62 324 452303 5434914 2550
OSK-W-17-1218 327 -62 405 453004 5435009 3225
OSK-W-17-1220 141 -47 303 452025 5434811 2275
OSK-W-17-1221 335 -51 1079 453082 5434544 3050
OSK-W-17-1224 333 -70 402 452304 5434914 2550
OSK-W-17-1226 331 -51 934 453371 5434726 3400
OSK-W-17-1227 329 -50 1164 453290 5434532 3225
OSK-W-17-1228 328 -59 657 451443 5434484 1600
OSK-W-17-1232 154 -47 351 452025 5434834 2275
OSK-W-17-1243 146 -49 189 452060 5434781 2275
OSK-W-17-1246 324 -50 191 452082 5434636 2225
OSK-W-17-1252 324 -46 231 452132 5434944 2400
OSK-W-17-1253 337 -52 186 452081 5434634 2225

 

 

OSK-W-17-885-W2 intersected FW0 FW within the Underdog Corridor returning 10.8 g/t Au over 2.0 metres. The interval is composed of trace pyrite stringers and 10% centimetre scale quartz veins hosted in a chloritized felsic intrusive dike.

 

 

OSK-W-17-935 intersected 3.34 g/t Au over 2.8 metres related to Mallard HW, within the Mallard Corridor. Mineralization is composed of trace disseminated pyrite and stringers hosted in a silicified and sericitized rhyolite.

 

 

OSK-W-17-1013 infilled Zone 27 with 4.56 g/t Au over 2.8 metres. Mineralization is composed of up to 6% pyrite stringers and 16% semi-massive pyrite with tourmaline in pervasive silica flooding zone hosted is a sericitized rhyolite.

 

 

OSK-W-17-1025 intersected 4.17 g/t Au over 2.0 metres. The interval is composed of trace pyrite dissemination and clusters in a silicified gabbro. This intersection does not correlate to a known zone.

 

 

OSK-W-17-1026 intersected Zone 27 returning 4.93 g/t Au over 2.3 metres and 4.38 g/t Au over 3.2 metres. Mineralization is composed of trace clustered and disseminated pyrite in a silicified and sericitized felsic intrusive.

 

 

OSK-W-17-1028 intersected 6.77 g/t Au over 2.0 metres. Mineralization consists of traces of disseminated pyrite and chalcopyrite in a chloritized andesite with 10% quartz-carbonate veins. This intersection does not correlate to a known zone.

 

 

OSK-W-17-1042 intersected 3.53 g/t Au over 2.3 metres in Zone 27. Mineralization is composed of 2% pyrite stringers, 1% disseminated pyrite, and a decimetre scale quartz vein within a sericitized, chloritized and slightly silicified felsic dyke. 

 

 

OSK-W-17-1050 infilled Zone 27 with 11.2 g/t Au over 2.0 metres. Mineralization consists of trace disseminated and stringer pyrite in a sericitized rhyolite.

 

 

OSK-W-17-1065 intersected 3.28 g/t Au over 2.3 metres related to Mallard 2. The interval occurs in a faulted zone with silica and sericite alteration and traces of pyrite-tourmaline stringer, trace disseminated pyrite and 13% tourmaline-quartz centimetre scale veins.

 

 

OSK-W-17-1066 intersected 4.21 g/t Au over 2.0 metres within the Caribou Corridor. Mineralization is composed of 3% disseminated pyrite and 1% quartz vein with pyrite hosted in a chloritized and slightly sericitized andesite.

 

 

OSK-W-17-1095 intersected 4.09 g/t Au over 3.0 metres related to Zone 27. Mineralization is composed of 2% – 3% tourmaline-pyrite veins hosted in a partially bleached, slightly sericitized and silicified andesite.

 

 

OSK-W-17-1105 intersected two intervals: 3.42 g/t Au over 2.0 metres and 4.49 g/t Au over 2.0 metres. The first interval is a new zone within an area between Caribou and the Lynx zones, geometry is to be determined. Mineralization is composed of 2% pyrite stringers in strongly chloritized and sericitized andesite. The second interval is related to Zone 27. Mineralization is composed of 1% pyrite stringers and 3% pyrite in association with crustiform veins, hosted in a felsic porphyry dike with sericite, silica and carbonate alteration.

 

 

OSK-W-17-1125 intersected 10.2 g/t Au over 5.4 metres related to FW2 in the Underdog Corridor. Mineralization is composed of 10% pyrite stringers hosted in a bleached andesite with one centimetre scale tourmaline-pyrite veinlets.

 

 

OSK-W-17-1125-W3 intersected 26.0 g/t Au over 2.2 metres related to Wolf HW in the Caribou Corridor. Mineralization is composed of 10% pyrite stringers hosted in a sericitized, chloritized and slightly silicified andesite.

 

 

OSK-W-17-1139 intersected 4.87 g/t Au over 3.4 metres related to CN1 FW in the Caribou Corridor. The interval consists of 2% pyrite stringers, 10% centimeter scale quartz veins in an andesite with strong chlorite and carbonate alteration and slight sericitization.

 

 

OSK-W-17-1140 intersected 3.56 g/t Au over 4.7 metres related to Zone 27. Mineralization is composed up 10% pyrite stringers in a sericitized felsic porphyric dike.

 

 

OSK-W-17-1141 infilled Zone 27 intersecting 30.0 g/t Au over 2.4 metres and 8.04 g/t Au over 2.3 metres. Mineralization includes up to 8% pyrite, 5% tourmaline-pyrite stringers and 3% pyrite clusters hosted in a sericitized rhyolite with intense pervasive silica flooding.

 

 

OSK-W-17-1142 intersected 3.07 g/t Au over 2.0 metres related to Zone 27 HW. Mineralization is composed of 14% pyrite stringers over 10 centimetres with pervasive silica flooding hosted in a rhyolite.

 

 

OSK-W-17-1147-W1 intersected 3.36 g/t Au over 2.4 metres and 3.94 g/t Au over 2.0 metres. The first interval is composed of 1% disseminated pyrite, trace pyrite clusters in a sericitized and lightly silicified rhyolite. This intersection is not related to any known zone. The second interval is composed of 3% pyrite stringers and semi massive sulfides over 60 cm hosted in a felsic dike with pervasive silica flooding, within the Caribou Corridor.

 

 

OSK-W-17-1152 intersected 5.67g/t Au over 2.0 metres related to FW1 in Underdog Corridor. Mineralization is composed of up 20% pyrite stringers, and 2% disseminated sphalerite in a sericitized and strongly silicified andesite.

 

 

OSK-W-17-1155 intersected 3.64 g/t au over 2.7 metres related to the Mallard Corridor. Mineralization is composed of traces of pyrite and chalcopyrite in a crustiform vein hosted in an andesite with chlorite, sericite and carbonates alteration.

 

 

OSK-W-17-1158 intersected 4.12 g/t Au over 2.4 metres related to Zone 27. The interval is composed of 10% pyrite stringers and traces of tourmaline-pyrite veins and a centime scale quartz-tourmaline vein hosted in a sericitized and bleached andesite.

 

 

OSK-W-17-1168 intersected 3.99 g/t Au over 2.6 metres in the Caribou Corridor. Mineralization is related to a crustiform vein with 1% pyrite stringers in a silicified gabbro with fuchsite.

 

 

OSK-W-17-1179 intersected 4.56 g/t Au over 2.7 metres related to the Underdog Corridor. Mineralization is composed of 5% pyrite with pervasive silica flooding in a sericitized felsic porphyric dike. It is a new zone located in western part of Underdog Corridor.

 

 

OSK-W-17-1186 intersected 5.38 g/t Au over 9.0 metres related to Caribou and 15.7 g/t Au over 3.0 metres related to FW3U in the Underdog Corridor. The first interval is composed of 10% pyrite stringers in an altered felsic porphyry dike with intense pervasive silica flooding. The second interval is composed of 5% pyrite in pervasive silica flooding, 4% pyrite cluster and stringer, and 2% pyrite in carbonates veining hosted in a felsic porphyric dike.

 

 

OSK-W-17-1188 intersected 3.09 g/t Au over 2.4 metres and 3.28 g/t Au over 2.0 metres in the Zone 27 Corridor. The first interval is composed of traces of pyrite-tourmaline stringers in a sericitized felsic porphyric dike. The second interval, Zone 27 infill, is composed of up to 5% tourmaline stringers and traces of disseminated pyrite in a pervasive silica flooding zone hosted in a sericitized rhyolite and felsic porphyric dike.

 

 

OSK-W-17-1196 infilled Zone 27 intersecting 3.26 g/t Au over 2.5 metres. The interval is at the sericitized contact between gabbro and rhyolite injected by low core angle crustiform veins. Mineralization is composed of 10% pyrite stringers, 4% disseminated pyrite or in clusters, and minor quartz veining.

 

 

OSK-W-17-1209 intersected 4.68 g/t Au over 2.8 metres related to FW4 in the Underdog Corridor. Mineralization is composed of massive pyrite (up 80%) over 70 cm in an altered zone with intense pervasive flooding hosted in a sericitized felsic porphyric dike.

 

 

OSK-W-17-1212 intersected Mallard returning 6.87 g/t au over 2.0 metres. Mineralization consists of 3% pyrite-tourmaline stringers, 1% pyrite stringers and 1% pyrite clusters in a strongly sericitized andesite.

 

 

OSK-W-17-1220 infilled Zone 27 intersecting 4.63 g/t Au over 4.3 metres. Mineralization is composed of 3% disseminated pyrite, 2% pyrite stringers, in a sericitized and bleached felsic porphyric dike.

 

 

OSK-W-17-1221 intersected 7.28 g/t Au over 2.0 metres and 3.45 g/t au over 3.9 metres related to Caribou 1. Mineralization is composed of up 10% pyrite stringers (fracture controlled) and clusters in a sericitized, chloritized and slightly silicified andesite.

 

 

OSK-W-17-1224 intersected 15.7 g/t Au over 2.8 metres related to Mallard 2. Mineralization is in a sericitized and silicified felsic porphyric dike at contact with andesite, including a ptygmatic tourmaline-quartz vein with 5% pyrite over 0.4 metre and semi-massive pyrite (40%) over 1.8 metres related to a pervasive silica flooding zone.

 

 

OSK-W-17-1226 intersected three intervals within Caribou Corridor; 3.43 g/t Au over 2.8 metres, 3.78 g/t Au over 2.0 metres and 3.42 g/t au over 2.3 metres. The first interval is a new zone at a sericitized and silicified contact between rhyolite and felsic intrusive composed of 35% pyrite-tourmaline stringers and 1% sphalerite-pyrite stringers. The second and third intervals correspond with up to 3% disseminated pyrite and pyrite stringers in a sericitized and chloritized andesite.

 

 

OSK-W-17-1227 intersected 4.37 g/t Au over 2.1 metres and 3.62 g/t Au over 2.0 metres. The first interval corresponds with 1% pyrite stringers and 4% pyrite-quartz-carbonate veins in a sheared and sericitized andesite. The second interval, can be related to the Main zone north-east extension (or south-west extension of Lynx), geometry remains to be determined. Mineralization is composed of 6% pyrite, traces of chalcopyrite and sphalerite in association with silica flooding and quartz-tourmaline veins hosted in a small quartz porphyry dike.

 

 

OSK-W-17-1228 intersected 7.59 g/t Au over 2.3 metres in the Underdog Corridor. Mineralization is composed of 2% pyrite in quartz-carbonates veins, trace pyrite stingers and metre scale quartz-carbonate veins hosted in a sericitized and strongly silicified rhyolite.

 

 

OSK-W-17-1232 infilled Zone 27 intersecting 5.50 g/t Au over 2.5 metres and 3.99 g/t Au over 3.0 metres. Mineralization is composed of up to 2% disseminated pyrite, 5% pyrite stringers and 2% tourmaline-pyrite veins in a strongly sericitized and bleached andesite. The second interval corresponds with 7% pyrite stringers in a sericitized felsic porphyric dike.

 

 

OSK-W-17-1243 infilled Zone 27 returning 5.23 g/t Au over 2.0 metres. Mineralization is composed of up to 7% pyrite stringers in a strongly sericitized to lightly silicified felsic porphyric dike.

 

 

OSK-W-17-1246 intersected Z27 HW with 5.62 g/t Au over 5.4 metres. Mineralization is composed of 3% irregular pyrite stringers, 2% disseminated pyrite in a strongly sericitized and chloritized felsic porphyry dike.

 

 

OSK-W-17-1252 intersected 3.55 g/t Au over 2.5 metres related to Mallard. Mineralization is composed of 25% pyrite stringers with locally clustered pyrite in a pervasive silica flooding zone hosted in a sericitized and silicified rhyolite.

 

 

OSK-W-17-1253 infilled Zone 27 with 4.88 g/t Au over 4.3 metres and 3.68 g/t au over 3.0 metres. Mineralization consists in up to 4% pyrite stringers and 5% pyrite clusters in a sericitized felsic dike.

 

 

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 the 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 widths determinations are estimated at 65-80% of the reported core length intervals for most of the zones. 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 ALS Laboratories in Val d’Or, Québec, Thunder Bay and Sudbury, Ontario or Vancouver, British Colombia or 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, 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 Lake Gold Deposit

 

 

The Windfall Lake gold deposit is located between Val-d’Or and Chibougamau in the Abitibi region of Québec, Canada. The mineral resource defined by the previous operator comprises 2,762,000 tonnes at 8.42 g/t Au (748.000 ounces) in the indicated category and 3,512,000 tonnes at 7.62 g/t Au (860,000 ounces) in the inferred category (sourced from a technical report dated June 10, 2015 entitled “Preliminary Economic Assessment of the Windfall Lake Gold Property, Québec, Canada” with an effective date of April 28, 2015, prepared in accordance with NI 43-101). The Windfall Lake gold deposit is currently one of the highest grade resource-stage gold projects in Canada. The bulk of the mineralization occurs in the Main Zone, a southwest/northeast trending zone of stacked mineralized lenses, measuring approximately 600 metres wide and at least 1.400 metres long. The deposit is well defined from surface to a depth of 500 metres, and remains open along strike and at depth. Mineralization has been identified only 30 metres from surface in some areas and as deep as 870 metres in others, with significant potential to extend mineralization up and 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% in the high-grade Windfall Lake 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 Quevillon area (over 3,300 square kilometres), a 100% interest in the Marban project located in the heart of Québec’s prolific Abitibi gold mining district, and properties in the Larder Lake Mining Division in northeast Ontario, including the Jonpol and Garrcon deposits on the Garrison property, the Buffonta past producing mine and the Gold Pike mine property. The Corporation also holds interests and options in a number of additional properties in northern Quebec and Ontario. Osisko continues to be well financed with approximately $220 million in cash and investments.

 

Posted December 5, 2017

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Osisko Intersects 30 g/t Au Over 2.4 Metres at Windfall | Prospector News
Uncategorized

Osisko Intersects 30 g/t Au Over 2.4 Metres at Windfall

 

 

 

 

 

Osisko Mining Inc. (TSX:OSK) is pleased to provide new results from the ongoing drill program at its 100% owned Windfall Lake gold project located in the Abitibi greenstone belt, Urban Township, Eeyou Istchee James Bay, Québec. The 800,000 metre drill program combines definition, expansion and exploration drilling in and around the main Windfall gold deposit and the adjacent Lynx deposit (located immediately NE of Windfall). Significant new analytical results from 52 intercepts in 40 drill holes focused on infill and expansion drilling in the Underdog, Caribou, Zone 27 and Mallard corridors of the Windfall deposit are presented below.

 

 

Highlights from the new results include: 30 g/t Au over 2.4 metres, in OSK-W-17-1141; 10.2 g/t Au over 5.4 metres in OSK-W-17-1125, 26.0 g/t Au over 2.2 metres in OSK-W-17-1125-W3 and 5.38 g/t Au over 9.0 metres in OSK-W-17-1186. 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-17-885-W2 1199.0 1201.0 2.0 10.8   FW0 FW Underdog
including 1199.0 1200.0 1.0 21.3  
OSK-W-17-935 80.0 82.8 2.8 3.34   Mallard HW Mallard
including 82.0 82.8 0.8 9.71  
OSK-W-17-1013 9.2 12.0 2.8 4.56   27 Zone 27
including 9.6 10.1 0.5 24.9  
OSK-W-17-1025 94.9 96.9 2.0 4.17   TBD Caribou
OSK-W-17-1026 83.6 85.9 2.3 4.93   27 infill Zone 27
including 85.0 85.9 0.9 12.4  
  92.7 95.9 3.2 4.38   27 infill Zone 27
including 94.8 95.9 1.1 11.2  
OSK-W-17-1028 727.5 729.5 2.0 6.77   Caribou Extn Caribou
OSK-W-17-1042 84.0 86.3 2.3 3.53   27 infill Zone 27
OSK-W-17-1050 39.7 41.7 2.0 11.2   Z27 Zone 27
OSK-W-17-1065 31.9 34.2 2.3 3.28   Mallard 2 Mallard
OSK-W-17-1066 214.5 216.5 2.0 4.21   Vein Caribou
OSK-W-17-1095 113.0 116.0 3.0 4.09   27 infill Zone 27
OSK-W-17-1105 468.0 470.0 2.0 3.42   New TBD
including 468.0 469.0 1.0 6.71  
  772.0 774.0 2.0 4.49   27 Zone 27
including 772.3 772.9 0.6 14.5  
OSK-W-17-1125 753.6 759.0 5.4 10.2   FW2 Underdog
including 755.9 757.2 1.3 36.3  
OSK-W-17-1125-W3 516.8 519.0 2.2 26.0   Wolf HW Caribou
including 517.5 518.2 0.7 80.5  
OSK-W-17-1139 520.0 523.4 3.4 4.87   CN1 FW Caribou
including 521.6 521.9 0.3 19.8  
OSK-W-17-1140 937.3 942.0 4.7 3.56   27 Zone 27
OSK-W-17-1141 59.4 61.8 2.4 30.0   27 infill Zone 27
including 59.4 61.0 1.6 44.7  
  71.7 74.0 2.3 8.04   27 infill Zone 27
including 73.4 74.0 0.6 28.0  
OSK-W-17-1142 142.0 144.0 2.0 3.07   27 HW infill Zone 27
OSK-W-17-1147-W1 798.0 800.4 2.4 3.36   TBD Shear
  909.0 911.0 2.0 3.94   TBD Caribou
OSK-W-17-1152 367.0 369.0 2.0 5.67   FW1 Underdog
including 368.0 368.6 0.6 16.6  
OSK-W-17-1155 327.0 329.7 2.7 3.64   VNCR Mallard
including 329.0 329.7 0.7 12.9  
OSK-W-17-1158 596.0 598.4 2.4 4.12   Caribou Extn Caribou
including 597.0 597.8 0.8 10.6  
OSK-W-17-1168 544.0 546.6 2.6 3.99   VNCR Caribou
including 546.0 546.6 0.6 15.4  
OSK-W-17-1179 742.8 745.5 2.7 4.56   New Underdog
including 742.8 743.7 0.9 11.6  
OSK-W-17-1186 228.0 237.0 9.0 5.38   Caribou Caribou
including 229.1 229.6 0.5 28.4  
including 236.0 237.0 1.0 23.6  
  863.0 866.0 3.0 15.7   FW3U Underdog
including 863.0 864.6 1.6 27.5  
OSK-W-17-1188 147.5 149.9 2.4 3.09   27 Zone 27
including 148.9 149.9 1.0 6.97  
  167.8 169.8 2.0 3.28   27 infill Zone 27
OSK-W-17-1196 155.5 158.0 2.5 3.26   27 infill Zone 27
OSK-W-17-1209 236.4 239.2 2.8 4.68   FW4 Underdog
including 236.4 237.1 0.7 17.2  
OSK-W-17-1212 215.0 217.0 2.0 6.87   Mallard Mallard
including 216.0 217.0 1.0 13.2  
OSK-W-17-1220 197.7 202.0 4.3 4.63   27 infill Zone 27
OSK-W-17-1221 707.4 709.4 2.0 7.28   Caribou 1 Caribou
including 707.4 708.0 0.6 23.7  
  715.8 719.7 3.9 3.45   Caribou 1 Caribou
OSK-W-17-1224 70.3 73.1 2.8 15.7   Mallard 2 Mallard
including 72.7 73.1 0.4 44.2  
OSK-W-17-1226 743.4 746.2 2.8 3.43   Caribou Extn Caribou
including 743.4 744.0 0.6 8.96  
  765.0 767.0 2.0 3.78   Caribou Extn Caribou
including 765.0 765.6 0.6 11.6  
  852.7 855.0 2.3 3.42   CN2 Caribou
OSK-W-17-1227 419.9 422.0 2.1 4.37   Vein Caribou
including 420.4 421.1 0.7 12.9  
  619.0 621.0 2.0 3.62   New TDB
OSK-W-17-1228 50.7 53.0 2.3 7.59   Vein Underdog
OSK-W-17-1232 149.0 151.5 2.5 5.50   27 infill Zone 27
  183.0 186.0 3.0 3.99   27 infill Zone 27
OSK-W-17-1243 99.6 101.6 2.0 5.23   27 infill Zone 27
including 101.0 101.6 0.6 13.6  
OSK-W-17-1246 34.5 39.9 5.4 5.62   27 HW infill Zone 27
OSK-W-17-1252 18.5 21.0 2.5 3.55   Mallard Mallard
including 19.3 20.3 1.0 8.74  
OSK-W-17-1253 43.0 47.3 4.3 4.88   27 Z27
  56.0 59.0 3.0 3.68   27 Z27

 

Notes:

 

  1. True widths are estimated at 65 – 80% of the reported core length interval. See “Quality Control” below.
  2. Definitions: FW = Foot Wall, HW = Hanging Wall, VNCR = Crustiform vein

 

 

Hole Number Azimuth
(o)
Dip
(o)
Length
(m)
UTM E UTM N Section
OSK-W-17-885-W2 334 -69 1229 452861 5434494 2850
OSK-W-17-935 327 -51 474 452025 5434827 2275
OSK-W-17-1013 333 -48 24 452246 5434866 2475
OSK-W-17-1025 330 -58 990 452486 5434439 2475
OSK-W-17-1026 129 -45 147 452119 5434787 2325
OSK-W-17-1028 326 -59 807 452860 5434814 3000
OSK-W-17-1042 146 -52 156 452119 5434786 2325
OSK-W-17-1050 148 -49 106 452053 5434749 2250
OSK-W-17-1065 334 -56 330 452290 5434903 2550
OSK-W-17-1066 332 -56 639 452488 5434436 2475
OSK-W-17-1095 147 -50 147 451959 5434734 2175
OSK-W-17-1105 328 -71 834 452920 5434843 3050
OSK-W-17-1125 331 -58 975 452563 5434568 2625
OSK-W-17-1125-W3 331 -58 1086 452563 5434568 2625
OSK-W-17-1139 333 -56 1092 452473 5434470 2500
OSK-W-17-1140 336 -55 975 453006 5434522 2975
OSK-W-17-1141 236 -65 252 452143 5434747 2325
OSK-W-17-1142 324 -45 275 452202 5434628 2325
OSK-W-17-1147-W1 335 -52 1212 453241 5434381 3125
OSK-W-17-1152 330 -53 885 451738 5434293 1750
OSK-W-17-1155 332 -71 477 452451 5435008 2725
OSK-W-17-1158 331 -59 696 453046 5434871 3175
OSK-W-17-1168 329 -57 717 453464 5435090 3650
OSK-W-17-1179 332 -57 777 451560 5434376 1650
OSK-W-17-1186 331 -54 984 452419 5434554 2475
OSK-W-17-1188 318 -57 201 452067 5434618 2200
OSK-W-17-1196 310 -59 210 452066 5434618 2200
OSK-W-17-1209 331 -60 429 451456 5434453 1600
OSK-W-17-1212 330 -62 324 452303 5434914 2550
OSK-W-17-1218 327 -62 405 453004 5435009 3225
OSK-W-17-1220 141 -47 303 452025 5434811 2275
OSK-W-17-1221 335 -51 1079 453082 5434544 3050
OSK-W-17-1224 333 -70 402 452304 5434914 2550
OSK-W-17-1226 331 -51 934 453371 5434726 3400
OSK-W-17-1227 329 -50 1164 453290 5434532 3225
OSK-W-17-1228 328 -59 657 451443 5434484 1600
OSK-W-17-1232 154 -47 351 452025 5434834 2275
OSK-W-17-1243 146 -49 189 452060 5434781 2275
OSK-W-17-1246 324 -50 191 452082 5434636 2225
OSK-W-17-1252 324 -46 231 452132 5434944 2400
OSK-W-17-1253 337 -52 186 452081 5434634 2225

 

 

OSK-W-17-885-W2 intersected FW0 FW within the Underdog Corridor returning 10.8 g/t Au over 2.0 metres. The interval is composed of trace pyrite stringers and 10% centimetre scale quartz veins hosted in a chloritized felsic intrusive dike.

 

 

OSK-W-17-935 intersected 3.34 g/t Au over 2.8 metres related to Mallard HW, within the Mallard Corridor. Mineralization is composed of trace disseminated pyrite and stringers hosted in a silicified and sericitized rhyolite.

 

 

OSK-W-17-1013 infilled Zone 27 with 4.56 g/t Au over 2.8 metres. Mineralization is composed of up to 6% pyrite stringers and 16% semi-massive pyrite with tourmaline in pervasive silica flooding zone hosted is a sericitized rhyolite.

 

 

OSK-W-17-1025 intersected 4.17 g/t Au over 2.0 metres. The interval is composed of trace pyrite dissemination and clusters in a silicified gabbro. This intersection does not correlate to a known zone.

 

 

OSK-W-17-1026 intersected Zone 27 returning 4.93 g/t Au over 2.3 metres and 4.38 g/t Au over 3.2 metres. Mineralization is composed of trace clustered and disseminated pyrite in a silicified and sericitized felsic intrusive.

 

 

OSK-W-17-1028 intersected 6.77 g/t Au over 2.0 metres. Mineralization consists of traces of disseminated pyrite and chalcopyrite in a chloritized andesite with 10% quartz-carbonate veins. This intersection does not correlate to a known zone.

 

 

OSK-W-17-1042 intersected 3.53 g/t Au over 2.3 metres in Zone 27. Mineralization is composed of 2% pyrite stringers, 1% disseminated pyrite, and a decimetre scale quartz vein within a sericitized, chloritized and slightly silicified felsic dyke. 

 

 

OSK-W-17-1050 infilled Zone 27 with 11.2 g/t Au over 2.0 metres. Mineralization consists of trace disseminated and stringer pyrite in a sericitized rhyolite.

 

 

OSK-W-17-1065 intersected 3.28 g/t Au over 2.3 metres related to Mallard 2. The interval occurs in a faulted zone with silica and sericite alteration and traces of pyrite-tourmaline stringer, trace disseminated pyrite and 13% tourmaline-quartz centimetre scale veins.

 

 

OSK-W-17-1066 intersected 4.21 g/t Au over 2.0 metres within the Caribou Corridor. Mineralization is composed of 3% disseminated pyrite and 1% quartz vein with pyrite hosted in a chloritized and slightly sericitized andesite.

 

 

OSK-W-17-1095 intersected 4.09 g/t Au over 3.0 metres related to Zone 27. Mineralization is composed of 2% – 3% tourmaline-pyrite veins hosted in a partially bleached, slightly sericitized and silicified andesite.

 

 

OSK-W-17-1105 intersected two intervals: 3.42 g/t Au over 2.0 metres and 4.49 g/t Au over 2.0 metres. The first interval is a new zone within an area between Caribou and the Lynx zones, geometry is to be determined. Mineralization is composed of 2% pyrite stringers in strongly chloritized and sericitized andesite. The second interval is related to Zone 27. Mineralization is composed of 1% pyrite stringers and 3% pyrite in association with crustiform veins, hosted in a felsic porphyry dike with sericite, silica and carbonate alteration.

 

 

OSK-W-17-1125 intersected 10.2 g/t Au over 5.4 metres related to FW2 in the Underdog Corridor. Mineralization is composed of 10% pyrite stringers hosted in a bleached andesite with one centimetre scale tourmaline-pyrite veinlets.

 

 

OSK-W-17-1125-W3 intersected 26.0 g/t Au over 2.2 metres related to Wolf HW in the Caribou Corridor. Mineralization is composed of 10% pyrite stringers hosted in a sericitized, chloritized and slightly silicified andesite.

 

 

OSK-W-17-1139 intersected 4.87 g/t Au over 3.4 metres related to CN1 FW in the Caribou Corridor. The interval consists of 2% pyrite stringers, 10% centimeter scale quartz veins in an andesite with strong chlorite and carbonate alteration and slight sericitization.

 

 

OSK-W-17-1140 intersected 3.56 g/t Au over 4.7 metres related to Zone 27. Mineralization is composed up 10% pyrite stringers in a sericitized felsic porphyric dike.

 

 

OSK-W-17-1141 infilled Zone 27 intersecting 30.0 g/t Au over 2.4 metres and 8.04 g/t Au over 2.3 metres. Mineralization includes up to 8% pyrite, 5% tourmaline-pyrite stringers and 3% pyrite clusters hosted in a sericitized rhyolite with intense pervasive silica flooding.

 

 

OSK-W-17-1142 intersected 3.07 g/t Au over 2.0 metres related to Zone 27 HW. Mineralization is composed of 14% pyrite stringers over 10 centimetres with pervasive silica flooding hosted in a rhyolite.

 

 

OSK-W-17-1147-W1 intersected 3.36 g/t Au over 2.4 metres and 3.94 g/t Au over 2.0 metres. The first interval is composed of 1% disseminated pyrite, trace pyrite clusters in a sericitized and lightly silicified rhyolite. This intersection is not related to any known zone. The second interval is composed of 3% pyrite stringers and semi massive sulfides over 60 cm hosted in a felsic dike with pervasive silica flooding, within the Caribou Corridor.

 

 

OSK-W-17-1152 intersected 5.67g/t Au over 2.0 metres related to FW1 in Underdog Corridor. Mineralization is composed of up 20% pyrite stringers, and 2% disseminated sphalerite in a sericitized and strongly silicified andesite.

 

 

OSK-W-17-1155 intersected 3.64 g/t au over 2.7 metres related to the Mallard Corridor. Mineralization is composed of traces of pyrite and chalcopyrite in a crustiform vein hosted in an andesite with chlorite, sericite and carbonates alteration.

 

 

OSK-W-17-1158 intersected 4.12 g/t Au over 2.4 metres related to Zone 27. The interval is composed of 10% pyrite stringers and traces of tourmaline-pyrite veins and a centime scale quartz-tourmaline vein hosted in a sericitized and bleached andesite.

 

 

OSK-W-17-1168 intersected 3.99 g/t Au over 2.6 metres in the Caribou Corridor. Mineralization is related to a crustiform vein with 1% pyrite stringers in a silicified gabbro with fuchsite.

 

 

OSK-W-17-1179 intersected 4.56 g/t Au over 2.7 metres related to the Underdog Corridor. Mineralization is composed of 5% pyrite with pervasive silica flooding in a sericitized felsic porphyric dike. It is a new zone located in western part of Underdog Corridor.

 

 

OSK-W-17-1186 intersected 5.38 g/t Au over 9.0 metres related to Caribou and 15.7 g/t Au over 3.0 metres related to FW3U in the Underdog Corridor. The first interval is composed of 10% pyrite stringers in an altered felsic porphyry dike with intense pervasive silica flooding. The second interval is composed of 5% pyrite in pervasive silica flooding, 4% pyrite cluster and stringer, and 2% pyrite in carbonates veining hosted in a felsic porphyric dike.

 

 

OSK-W-17-1188 intersected 3.09 g/t Au over 2.4 metres and 3.28 g/t Au over 2.0 metres in the Zone 27 Corridor. The first interval is composed of traces of pyrite-tourmaline stringers in a sericitized felsic porphyric dike. The second interval, Zone 27 infill, is composed of up to 5% tourmaline stringers and traces of disseminated pyrite in a pervasive silica flooding zone hosted in a sericitized rhyolite and felsic porphyric dike.

 

 

OSK-W-17-1196 infilled Zone 27 intersecting 3.26 g/t Au over 2.5 metres. The interval is at the sericitized contact between gabbro and rhyolite injected by low core angle crustiform veins. Mineralization is composed of 10% pyrite stringers, 4% disseminated pyrite or in clusters, and minor quartz veining.

 

 

OSK-W-17-1209 intersected 4.68 g/t Au over 2.8 metres related to FW4 in the Underdog Corridor. Mineralization is composed of massive pyrite (up 80%) over 70 cm in an altered zone with intense pervasive flooding hosted in a sericitized felsic porphyric dike.

 

 

OSK-W-17-1212 intersected Mallard returning 6.87 g/t au over 2.0 metres. Mineralization consists of 3% pyrite-tourmaline stringers, 1% pyrite stringers and 1% pyrite clusters in a strongly sericitized andesite.

 

 

OSK-W-17-1220 infilled Zone 27 intersecting 4.63 g/t Au over 4.3 metres. Mineralization is composed of 3% disseminated pyrite, 2% pyrite stringers, in a sericitized and bleached felsic porphyric dike.

 

 

OSK-W-17-1221 intersected 7.28 g/t Au over 2.0 metres and 3.45 g/t au over 3.9 metres related to Caribou 1. Mineralization is composed of up 10% pyrite stringers (fracture controlled) and clusters in a sericitized, chloritized and slightly silicified andesite.

 

 

OSK-W-17-1224 intersected 15.7 g/t Au over 2.8 metres related to Mallard 2. Mineralization is in a sericitized and silicified felsic porphyric dike at contact with andesite, including a ptygmatic tourmaline-quartz vein with 5% pyrite over 0.4 metre and semi-massive pyrite (40%) over 1.8 metres related to a pervasive silica flooding zone.

 

 

OSK-W-17-1226 intersected three intervals within Caribou Corridor; 3.43 g/t Au over 2.8 metres, 3.78 g/t Au over 2.0 metres and 3.42 g/t au over 2.3 metres. The first interval is a new zone at a sericitized and silicified contact between rhyolite and felsic intrusive composed of 35% pyrite-tourmaline stringers and 1% sphalerite-pyrite stringers. The second and third intervals correspond with up to 3% disseminated pyrite and pyrite stringers in a sericitized and chloritized andesite.

 

 

OSK-W-17-1227 intersected 4.37 g/t Au over 2.1 metres and 3.62 g/t Au over 2.0 metres. The first interval corresponds with 1% pyrite stringers and 4% pyrite-quartz-carbonate veins in a sheared and sericitized andesite. The second interval, can be related to the Main zone north-east extension (or south-west extension of Lynx), geometry remains to be determined. Mineralization is composed of 6% pyrite, traces of chalcopyrite and sphalerite in association with silica flooding and quartz-tourmaline veins hosted in a small quartz porphyry dike.

 

 

OSK-W-17-1228 intersected 7.59 g/t Au over 2.3 metres in the Underdog Corridor. Mineralization is composed of 2% pyrite in quartz-carbonates veins, trace pyrite stingers and metre scale quartz-carbonate veins hosted in a sericitized and strongly silicified rhyolite.

 

 

OSK-W-17-1232 infilled Zone 27 intersecting 5.50 g/t Au over 2.5 metres and 3.99 g/t Au over 3.0 metres. Mineralization is composed of up to 2% disseminated pyrite, 5% pyrite stringers and 2% tourmaline-pyrite veins in a strongly sericitized and bleached andesite. The second interval corresponds with 7% pyrite stringers in a sericitized felsic porphyric dike.

 

 

OSK-W-17-1243 infilled Zone 27 returning 5.23 g/t Au over 2.0 metres. Mineralization is composed of up to 7% pyrite stringers in a strongly sericitized to lightly silicified felsic porphyric dike.

 

 

OSK-W-17-1246 intersected Z27 HW with 5.62 g/t Au over 5.4 metres. Mineralization is composed of 3% irregular pyrite stringers, 2% disseminated pyrite in a strongly sericitized and chloritized felsic porphyry dike.

 

 

OSK-W-17-1252 intersected 3.55 g/t Au over 2.5 metres related to Mallard. Mineralization is composed of 25% pyrite stringers with locally clustered pyrite in a pervasive silica flooding zone hosted in a sericitized and silicified rhyolite.

 

 

OSK-W-17-1253 infilled Zone 27 with 4.88 g/t Au over 4.3 metres and 3.68 g/t au over 3.0 metres. Mineralization consists in up to 4% pyrite stringers and 5% pyrite clusters in a sericitized felsic dike.

 

 

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 the 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 widths determinations are estimated at 65-80% of the reported core length intervals for most of the zones. 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 ALS Laboratories in Val d’Or, Québec, Thunder Bay and Sudbury, Ontario or Vancouver, British Colombia or 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, 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 Lake Gold Deposit

 

 

The Windfall Lake gold deposit is located between Val-d’Or and Chibougamau in the Abitibi region of Québec, Canada. The mineral resource defined by the previous operator comprises 2,762,000 tonnes at 8.42 g/t Au (748.000 ounces) in the indicated category and 3,512,000 tonnes at 7.62 g/t Au (860,000 ounces) in the inferred category (sourced from a technical report dated June 10, 2015 entitled “Preliminary Economic Assessment of the Windfall Lake Gold Property, Québec, Canada” with an effective date of April 28, 2015, prepared in accordance with NI 43-101). The Windfall Lake gold deposit is currently one of the highest grade resource-stage gold projects in Canada. The bulk of the mineralization occurs in the Main Zone, a southwest/northeast trending zone of stacked mineralized lenses, measuring approximately 600 metres wide and at least 1.400 metres long. The deposit is well defined from surface to a depth of 500 metres, and remains open along strike and at depth. Mineralization has been identified only 30 metres from surface in some areas and as deep as 870 metres in others, with significant potential to extend mineralization up and 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% in the high-grade Windfall Lake 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 Quevillon area (over 3,300 square kilometres), a 100% interest in the Marban project located in the heart of Québec’s prolific Abitibi gold mining district, and properties in the Larder Lake Mining Division in northeast Ontario, including the Jonpol and Garrcon deposits on the Garrison property, the Buffonta past producing mine and the Gold Pike mine property. The Corporation also holds interests and options in a number of additional properties in northern Quebec and Ontario. Osisko continues to be well financed with approximately $220 million in cash and investments.

 

Posted December 5, 2017

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