Osisko Mining Inc. (OSK:TSX. "Osisko" or the "Corporation") is
pleased to provide new analytical results from the ongoing
expansion and definition drill program at its 100% owned Windfall
gold project located in the Abitibi greenstone belt, Urban
Township, Eeyou Istchee James Bay, Québec.
Drilling is currently focused on the Lynx
deposit, with the near-term objective of completion of the infill
program in preparation for feasibility work. Osisko Chief Executive
Officer John Burzynski commented: “We anticipate a busy year ahead
as we maintain the steady drill pace of 2020 and work towards the
completion of infilling our resource. The principal mineralized
zones also remain open down plunge, and near deposit exploration is
continuing to give encouraging results, which we believe will lead
to new mineralized extensions and additions.”
The table below contains resource definition
infill intercepts located inside the February 2020 mineral resource
estimate wireframes (see Osisko news release dated February 19,
2020). Significant new analytical results are presented below and
include 90 intercepts in 25 drill holes and 23 wedges.
Selected high-grade intercepts from the new
results include: 206 g/t Au over 2.0 metres in
WST-20-0581; 60.0 g/t Au over 2.0 metres in
WST-20-0498; 52.9 g/t Au over 2.8 metres in
WST-20-0513; 47.5 g/t Au over 2.2 metres in
OSK-W-20-2334; 42.4 g/t Au over 2.3 metres in
WST-20-0523A; 40.4 g/t Au over 3.6 metres in
OSK-W-20-2133-W4. Maps showing hole locations and full analytical
results are available at www.osiskomining.com.
Hole No. |
From(m) |
To(m) |
Interval(m) |
Au (g/t)uncut |
Au (g/t)cut to 100 g/t |
Zone |
Corridor |
OSK-W-20-2133-W4 |
798.8 |
802.4 |
3.6 |
40.4 |
|
Triple Lynx |
Triple Lynx |
including |
799.2 |
800.2 |
1.0 |
73.3 |
|
OSK-W-20-2243-W6 |
804.7 |
806.8 |
2.1 |
9.02 |
|
Lynx_361 |
Triple Lynx |
|
851.4 |
854.8 |
3.4 |
23.5 |
|
Triple Lynx |
Triple Lynx |
including |
853.1 |
853.9 |
0.8 |
68.9 |
|
OSK-W-20-2252-W7 |
842.6 |
849.0 |
6.4 |
6.93 |
|
Triple Lynx |
Triple Lynx |
including |
844.8 |
845.1 |
0.3 |
41.7 |
|
|
879.1 |
881.8 |
2.7 |
4.62 |
|
Lynx_371 |
Triple Lynx |
including |
879.4 |
879.7 |
0.3 |
16.0 |
|
|
885.0 |
889.0 |
4.0 |
4.70 |
|
Lynx_371 |
Triple Lynx |
|
893.9 |
896.7 |
2.8 |
5.67 |
|
Lynx_371 |
Triple Lynx |
|
919.7 |
923.0 |
3.3 |
4.45 |
|
Lynx_361 |
Triple Lynx |
including |
919.7 |
920.0 |
0.3 |
13.3 |
|
OSK-W-20-2256-W4 |
1012.0 |
1014.0 |
2.0 |
14.6 |
|
Triple Lynx |
Triple Lynx |
OSK-W-20-2256-W6 |
868.8 |
872.6 |
3.8 |
24.4 |
|
Lynx_371 |
Triple Lynx |
including |
869.7 |
870.3 |
0.6 |
79.5 |
|
|
875.0 |
879.0 |
4.0 |
4.91 |
|
Lynx_371 |
Triple Lynx |
|
883.0 |
892.0 |
9.0 |
18.2 |
|
Lynx_361 |
Triple Lynx |
including |
887.6 |
888.3 |
0.7 |
57.6 |
|
OSK-W-20-2256-W7 |
869.4 |
872.0 |
2.6 |
4.86 |
|
Lynx_361 |
Triple Lynx |
|
899.0 |
901.0 |
2.0 |
15.4 |
|
Triple Lynx |
Triple Lynx |
including |
899.6 |
900.0 |
0.4 |
69.4 |
|
OSK-W-20-2264 |
782.2 |
790.0 |
7.8 |
10.5 |
|
Lynx_330 |
Lynx |
including |
786.9 |
787.6 |
0.7 |
38.4 |
|
OSK-W-20-2271-W1 |
847.5 |
849.5 |
2.0 |
4.50 |
|
Lynx |
Lynx |
OSK-W-20-2271-W2 |
1024.5 |
1026.9 |
2.4 |
32.1 |
|
Lynx_330 |
Lynx |
including |
1026.6 |
1026.9 |
0.3 |
90.1 |
|
|
1064.0 |
1066.1 |
2.1 |
6.13 |
|
Lynx_334 |
Lynx |
including |
1065.2 |
1065.6 |
0.4 |
20.3 |
|
|
1077.0 |
1079.0 |
2.0 |
5.15 |
|
Lynx_334 |
Lynx |
OSK-W-20-2275-W3 |
899.0 |
901.0 |
2.0 |
10.8 |
|
Triple Lynx |
Triple Lynx |
including |
900.3 |
900.7 |
0.4 |
43.3 |
|
OSK-W-20-2275-W4 |
635.0 |
637.1 |
2.1 |
7.18 |
|
Lynx_365 |
Triple Lynx |
including |
636.1 |
636.5 |
0.4 |
25.6 |
|
|
804.8 |
810.4 |
5.6 |
11.8 |
|
Triple Lynx |
Triple Lynx |
including |
806.3 |
806.9 |
0.6 |
55.1 |
|
|
835.0 |
837.0 |
2.0 |
11.1 |
|
Triple Lynx |
Triple Lynx |
including |
835.6 |
836.0 |
0.4 |
54.7 |
|
|
889.5 |
892.0 |
2.5 |
5.40 |
|
Triple Lynx |
Triple Lynx |
including |
890.4 |
891.0 |
0.6 |
22.4 |
|
OSK-W-20-2280-W2 |
1102.7 |
1105.0 |
2.3 |
5.46 |
|
Lynx_370 |
Triple Lynx |
including |
1103.5 |
1104.0 |
0.5 |
20.9 |
|
OSK-W-20-2280-W3 |
1099.2 |
1101.3 |
2.1 |
5.22 |
|
Triple Lynx |
Triple Lynx |
including |
1101.0 |
1101.3 |
0.3 |
17.7 |
|
|
1103.0 |
1108.9 |
5.9 |
4.92 |
|
Triple Lynx |
Triple Lynx |
including |
1108.6 |
1108.9 |
0.3 |
18.2 |
|
|
1112.9 |
1116.0 |
3.1 |
20.1 |
|
Lynx_370 |
Triple Lynx |
including |
1112.9 |
1113.5 |
0.6 |
77.8 |
|
OSK-W-20-2280-W4 |
1040.0 |
1042.0 |
2.0 |
6.32 |
|
Triple Lynx |
Triple Lynx |
|
1044.0 |
1046.0 |
2.0 |
4.83 |
|
Triple Lynx |
Triple Lynx |
including |
1044.6 |
1044.9 |
0.3 |
24.6 |
|
Triple Lynx |
Triple Lynx |
|
1072.9 |
1077.5 |
4.6 |
12.8 |
|
Triple Lynx |
Triple Lynx |
including |
1075.5 |
1075.9 |
0.4 |
97.2 |
|
|
1091.2 |
1098.0 |
6.8 |
3.96 |
|
Triple Lynx |
Triple Lynx |
|
1100.7 |
1105.0 |
4.3 |
13.5 |
12.7 |
Lynx_364 |
Triple Lynx |
including |
1100.7 |
1101.0 |
0.3 |
112 |
100 |
|
1109.7 |
1114.0 |
4.3 |
16.9 |
15.7 |
Lynx_364 |
Triple Lynx |
including |
1109.7 |
1110.0 |
0.3 |
117 |
100 |
OSK-W-20-2280-W5 |
1010.5 |
1016.0 |
5.5 |
3.61 |
|
Lynx_363 |
Triple Lynx |
|
1039.0 |
1041.0 |
2.0 |
22.4 |
|
Lynx_364 |
Triple Lynx |
including |
1039.5 |
1040.0 |
0.5 |
81.8 |
|
|
1046.0 |
1052.0 |
6.0 |
30.4 |
23.7 |
Lynx_364 |
Triple Lynx |
including |
1047.8 |
1049.0 |
1.2 |
129 |
95 |
|
1054.0 |
1059.9 |
5.9 |
14.7 |
|
Lynx_364 |
Triple Lynx |
including |
1059.2 |
1059.9 |
0.7 |
82.8 |
|
|
1093.0 |
1096.0 |
3.0 |
12.0 |
|
Triple Lynx |
Triple Lynx |
OSK-W-20-2283-W1 |
807.0 |
809.6 |
2.6 |
8.20 |
|
Triple Lynx |
Triple Lynx |
including |
807.5 |
809.6 |
2.1 |
9.02 |
|
OSK-W-20-2283-W2 |
814.8 |
817.1 |
2.3 |
8.16 |
|
Triple Lynx |
Triple Lynx |
including |
816.6 |
817.1 |
0.5 |
26.8 |
|
|
832.7 |
835.0 |
2.3 |
6.13 |
|
Triple Lynx |
Triple Lynx |
|
991.0 |
993.0 |
2.0 |
9.11 |
|
Triple Lynx |
Triple Lynx |
including |
991.3 |
991.8 |
0.5 |
35.7 |
|
OSK-W-20-2283-W6 |
831.6 |
836.0 |
4.4 |
17.6 |
|
Lynx_361 |
Triple Lynx |
including |
833.3 |
834.6 |
1.3 |
40.6 |
|
OSK-W-20-2292-W4 |
892.0 |
894.9 |
2.9 |
4.02 |
|
Lynx_375 |
Triple Lynx |
including |
893.1 |
893.8 |
0.7 |
10.3 |
|
OSK-W-20-2295-W2 |
679.7 |
682.0 |
2.3 |
24.7 |
17.4 |
Triple Lynx |
Triple Lynx |
including |
681.7 |
682.0 |
0.3 |
157 |
100 |
OSK-W-20-2295-W3 |
660.3 |
662.3 |
2.0 |
3.89 |
|
Triple Lynx |
Triple Lynx |
OSK-W-20-2295-W4 |
670.1 |
673.1 |
3.0 |
5.99 |
|
Triple Lynx |
Triple Lynx |
including |
670.1 |
670.6 |
0.5 |
16.6 |
|
|
698.0 |
700.1 |
2.1 |
4.33 |
|
Triple Lynx |
Triple Lynx |
including |
699.8 |
700.1 |
0.3 |
23.7 |
|
|
757.0 |
759.3 |
2.3 |
4.08 |
|
Triple Lynx |
Triple Lynx |
including |
757.0 |
757.5 |
0.5 |
10.1 |
|
|
822.5 |
824.5 |
2.0 |
3.90 |
|
Triple Lynx |
Triple Lynx |
including |
823.5 |
824.0 |
0.5 |
14.1 |
|
|
841.0 |
843.0 |
2.0 |
5.77 |
|
Triple Lynx |
Triple Lynx |
including |
841.4 |
841.7 |
0.3 |
31.5 |
|
OSK-W-20-2313-W5 |
819.9 |
822.0 |
2.1 |
7.49 |
|
Lynx_376 |
Triple Lynx |
OSK-W-20-2322-W1 |
1119.8 |
1124.6 |
4.8 |
7.20 |
|
Lynx_330 |
Lynx |
including |
1120.5 |
1121.2 |
0.7 |
13.8 |
|
OSK-W-20-2334 |
1007.1 |
1009.3 |
2.2 |
47.5 |
41.7 |
Lynx_330 |
Lynx |
including |
1008.0 |
1008.4 |
0.4 |
132 |
100 |
OSK-W-20-2367 |
59.0 |
62.0 |
3.0 |
6.38 |
|
Lynx_335 |
Lynx SW |
WST-20-0406 |
130.2 |
132.4 |
2.2 |
3.26 |
|
Lynx_322 |
Lynx |
WST-20-0486 |
57.5 |
63.7 |
6.2 |
15.1 |
|
Lynx_303 |
Lynx |
including |
58.5 |
59.0 |
0.5 |
47.1 |
|
and |
59.7 |
60.1 |
0.4 |
46.1 |
|
|
114.0 |
116.0 |
2.0 |
10.5 |
|
Lynx_304 |
Lynx |
including |
115.4 |
116.0 |
0.6 |
27.6 |
|
WST-20-0498 |
123.5 |
125.7 |
2.2 |
3.84 |
|
Lynx_304 |
Lynx |
|
132.5 |
134.5 |
2.0 |
60.0 |
41.3 |
Lynx_304 |
Lynx |
including |
133.8 |
134.5 |
0.7 |
154 |
100 |
WST-20-0502 |
73.4 |
76.0 |
2.6 |
4.73 |
|
Lynx_311 |
Lynx |
WST-20-0503 |
57.9 |
59.9 |
2.0 |
18.6 |
|
Lynx_311 |
Lynx |
including |
57.9 |
58.7 |
0.8 |
46.1 |
|
WST-20-0505A |
84.5 |
87.0 |
2.5 |
9.07 |
|
Lynx_307 |
Lynx |
including |
84.5 |
84.8 |
0.3 |
72.4 |
|
|
233.5 |
236.0 |
2.5 |
3.00 |
|
Lynx SW |
Lynx SW |
WST-20-0506 |
123.2 |
125.5 |
2.3 |
7.83 |
|
Lynx_304 |
Lynx |
including |
123.9 |
124.7 |
0.8 |
22.4 |
|
WST-20-0509 |
94.4 |
96.5 |
2.1 |
4.24 |
|
Lynx_304 |
Lynx |
including |
94.4 |
94.7 |
0.3 |
13.9 |
|
WST-20-0512 |
48.2 |
50.2 |
2.0 |
8.84 |
|
Lynx_303 |
Lynx |
including |
49.3 |
49.9 |
0.6 |
29.1 |
|
|
54.0 |
56.0 |
2.0 |
21.1 |
|
Lynx_311 |
Lynx |
including |
54.9 |
55.4 |
0.5 |
83.8 |
|
WST-20-0513 |
138.0 |
140.8 |
2.8 |
52.9 |
44.5 |
Lynx_323 |
Lynx |
including |
139.0 |
139.9 |
0.9 |
126 |
100 |
|
151.8 |
154.0 |
2.2 |
3.67 |
|
Lynx_304 |
Lynx |
WST-20-0514 |
141.0 |
143.0 |
2.0 |
20.9 |
|
Lynx_323 |
Lynx |
including |
141.0 |
142.0 |
1.0 |
32.5 |
|
WST-20-0523A |
67.2 |
69.4 |
2.2 |
14.8 |
|
Lynx_311 |
Lynx |
including |
67.7 |
68.4 |
0.7 |
44.8 |
|
|
72.0 |
74.3 |
2.3 |
42.4 |
|
Lynx_311 |
Lynx |
including |
73.5 |
74.3 |
0.8 |
90.4 |
|
WST-20-0525 |
142.0 |
144.0 |
2.0 |
13.3 |
|
Lynx_323 |
Lynx |
including |
142.0 |
143.0 |
1.0 |
26.4 |
|
WST-20-0537 |
84.9 |
87.1 |
2.2 |
6.49 |
|
Lynx |
Lynx |
including |
86.4 |
87.1 |
0.7 |
16.1 |
|
WST-20-0538 |
105.0 |
107.2 |
2.2 |
15.0 |
|
Lynx_304 |
Lynx |
including |
105.3 |
105.8 |
0.5 |
64.4 |
|
|
117.0 |
120.0 |
3.0 |
4.15 |
|
Lynx |
Lynx |
WST-20-0539 |
45.9 |
48.2 |
2.3 |
6.89 |
|
Lynx_303 |
Lynx |
|
96.6 |
98.6 |
2.0 |
20.6 |
|
Lynx_304 |
Lynx |
including |
97.0 |
97.5 |
0.5 |
80.2 |
|
WST-20-0540 |
51.3 |
53.5 |
2.2 |
3.12 |
|
Lynx_303 |
Lynx |
|
111.0 |
113.2 |
2.2 |
7.86 |
|
Lynx_304 |
Lynx |
including |
111.0 |
111.3 |
0.3 |
47.2 |
|
WST-20-0541 |
45.8 |
48.1 |
2.3 |
10.0 |
|
Lynx_303 |
Lynx |
including |
46.4 |
47.2 |
0.8 |
25.6 |
|
|
60.1 |
62.3 |
2.2 |
13.8 |
|
Lynx |
Lynx |
including |
60.9 |
61.7 |
0.8 |
34.3 |
|
|
98.0 |
100.0 |
2.0 |
15.7 |
|
Lynx_304 |
Lynx |
including |
99.0 |
99.5 |
0.5 |
36.3 |
|
WST-20-0544 |
52.7 |
55.5 |
2.8 |
72.0 |
55.8 |
Lynx_303 |
Lynx |
including |
52.7 |
54.1 |
1.4 |
132 |
100 |
WST-20-0563 |
129.4 |
131.5 |
2.1 |
4.72 |
|
Lynx_365 |
Triple Lynx |
including |
129.4 |
130.0 |
0.6 |
15.1 |
|
WST-20-0579 |
58.0 |
60.5 |
2.5 |
5.62 |
|
Lynx_303 |
Lynx |
WST-20-0581 |
268.4 |
274.0 |
5.6 |
4.56 |
|
Lynx SW |
Lynx SW |
|
283.0 |
285.0 |
2.0 |
206 |
45.4 |
Lynx SW |
Lynx SW |
including |
283.0 |
283.9 |
0.9 |
458 |
100 |
Notes: True widths are estimated at 55 – 80% of the reported
core length interval. See "Quality Control and Reporting Protocols"
below.
Drill hole location
Hole Number |
Azimuth(°) |
Dip(°) |
Length(m) |
UTM E |
UTM N |
Elevation |
Section |
OSK-W-20-2133-W4 |
118 |
-49 |
987 |
453080 |
5435531 |
417 |
3525 |
OSK-W-20-2243-W6 |
122 |
-54 |
965 |
453086 |
5435526 |
417 |
3550 |
OSK-W-20-2252-W7 |
129 |
-54 |
1191 |
453241 |
5435694 |
415 |
3750 |
OSK-W-20-2256-W4 |
125 |
-51 |
1122 |
453160 |
5435686 |
411 |
3675 |
OSK-W-20-2256-W6 |
125 |
-51 |
1157 |
453160 |
5435686 |
411 |
3675 |
OSK-W-20-2256-W7 |
125 |
-51 |
1005 |
453160 |
5435686 |
411 |
3675 |
OSK-W-20-2264 |
292 |
-74 |
1119 |
454127 |
5435062 |
396 |
4225 |
OSK-W-20-2271-W1 |
120 |
-53 |
1200 |
453462 |
5435683 |
410 |
3950 |
OSK-W-20-2271-W2 |
120 |
-53 |
1223 |
453462 |
5435683 |
410 |
3950 |
OSK-W-20-2275-W3 |
127 |
-49 |
1050 |
452888 |
5435583 |
409 |
3400 |
OSK-W-20-2275-W4 |
127 |
-49 |
1052 |
452888 |
5435583 |
409 |
3400 |
OSK-W-20-2280-W2 |
127 |
-58 |
1211 |
453304 |
5435639 |
415 |
3775 |
OSK-W-20-2280-W3 |
127 |
-58 |
1191 |
453304 |
5435639 |
415 |
3775 |
OSK-W-20-2280-W4 |
127 |
-58 |
1215 |
453304 |
5435639 |
415 |
3775 |
OSK-W-20-2280-W5 |
127 |
-58 |
1134 |
453304 |
5435639 |
415 |
3775 |
OSK-W-20-2283-W1 |
135 |
-50 |
1035 |
452997 |
5435607 |
425 |
3500 |
OSK-W-20-2283-W2 |
135 |
-50 |
1011 |
452997 |
5435607 |
425 |
3500 |
OSK-W-20-2283-W6 |
135 |
-50 |
957 |
452997 |
5435607 |
425 |
3500 |
OSK-W-20-2292-W4 |
125 |
-54 |
984 |
453035 |
5435561 |
420 |
3525 |
OSK-W-20-2295-W2 |
132 |
-51 |
963 |
452933 |
5435473 |
415 |
3375 |
OSK-W-20-2295-W3 |
132 |
-51 |
969 |
452933 |
5435473 |
415 |
3375 |
OSK-W-20-2295-W4 |
132 |
-51 |
1082 |
452933 |
5435473 |
415 |
3375 |
OSK-W-20-2313-W5 |
134 |
-52 |
1086 |
452965 |
5435583 |
420 |
3450 |
OSK-W-20-2322-W1 |
130 |
-54 |
1233 |
453608 |
5435715 |
403 |
4075 |
OSK-W-20-2334 |
125 |
-53 |
1166 |
453397 |
5435557 |
413 |
3825 |
OSK-W-20-2367 |
349 |
-46 |
279 |
452742 |
5434761 |
398 |
2875 |
WST-20-0406 |
135 |
-8 |
202 |
453494 |
5435287 |
117 |
3775 |
WST-20-0486 |
130 |
-37 |
162 |
453359 |
5435209 |
154 |
3625 |
WST-20-0498 |
132 |
-11 |
169 |
453228 |
5435126 |
136 |
3475 |
WST-20-0502 |
144 |
-40 |
115 |
453105 |
5435065 |
231 |
3325 |
WST-20-0503 |
148 |
6 |
99 |
453105 |
5435065 |
232 |
3325 |
WST-20-0505A |
183 |
-45 |
331 |
453227 |
5435125 |
134 |
3475 |
WST-20-0506 |
175 |
20 |
141 |
453357 |
5435208 |
156 |
3625 |
WST-20-0509 |
126 |
-20 |
148 |
453316 |
5435166 |
124 |
3575 |
WST-20-0512 |
159 |
-10 |
139 |
453315 |
5435164 |
125 |
3575 |
WST-20-0513 |
147 |
-25 |
184 |
453418 |
5435305 |
69 |
3725 |
WST-20-0514 |
154 |
-26 |
181 |
453418 |
5435305 |
69 |
3725 |
WST-20-0523A |
166 |
-46 |
387 |
453104 |
5435065 |
231 |
3325 |
WST-20-0525 |
165 |
-20 |
187 |
453418 |
5435305 |
69 |
3725 |
WST-20-0537 |
132 |
-32 |
139 |
453316 |
5435166 |
124 |
3575 |
WST-20-0538 |
130 |
-37 |
142 |
453316 |
5435166 |
124 |
3575 |
WST-20-0539 |
122 |
-29 |
139 |
453316 |
5435166 |
124 |
3575 |
WST-20-0540 |
129 |
-42 |
147 |
453316 |
5435166 |
124 |
3575 |
WST-20-0541 |
150 |
-28 |
138 |
453315 |
5435165 |
124 |
3575 |
WST-20-0544 |
144 |
-43 |
144 |
453315 |
5435165 |
124 |
3575 |
WST-20-0563 |
324 |
-40 |
248 |
453255 |
5435214 |
96 |
3525 |
WST-20-0579 |
162 |
-38 |
144 |
453315 |
5435165 |
124 |
3575 |
WST-20-0581 |
181 |
-60 |
474 |
453177 |
5435126 |
173 |
3425 |
Lynx ZoneMineralization occurs as grey to
translucent quartz-carbonate-pyrite-tourmaline veins and pyrite
replacement zones and stockworks. The vein-type is associated with
haloes of pervasive sericite-pyrite ± silica alteration and contain
sulphides (predominantly pyrite with minor amounts of chalcopyrite,
sphalerite, galena, arsenopyrite, and pyrrhotite) and local visible
gold. Replacement mineralization is associated with strong
pervasive silica-sericite-ankerite ± tourmaline alteration and
contains disseminated pyrite from trace to 80% with local visible
gold. Pyrite stockworks can form envelopes that reach several tens
of metres thick. Fuchsite alteration is common and is spatially
constrained to near the gabbros. Mineralization occurs at or near
geological contacts between felsic porphyritic or fragmental
intrusions and the host rhyolites or gabbros and locally can be
hosted along the gabbro-rhyolite contact.
Triple LynxMineralization in the Triple Lynx
zone is vein-type, quartz-carbonate-pyrite-tourmaline veins,
associated with pervasive sericite-pyrite ± silica alteration and
contain sulphides similar to the main Lynx Zone, pyrite dominated
with minor other sulphides, ranging from trace to up to 70%
locally, and local visible gold. Locally fuchsite is present when
proximal to the gabbros. Mineralization is hosted in or at the
contacts of felsic porphyritic dikes with rhyolites (locally
bleached) or gabbros.
Qualified PersonThe scientific
and technical content of this news release has been reviewed,
prepared and approved by Mr. Louis Grenier, M.Sc.A., P.Geo. (OGQ
800), Project Manager of Osisko's Windfall Lake gold project, who
is a "qualified person" as defined by National Instrument 43-101 –
Standards of Disclosure for Mineral Projects ("NI 43-101").
Quality Control and Reporting
ProtocolsTrue width determination is estimated at 55-80%
of the reported core length interval for the zone. Assays are uncut
except where indicated. Intercepts occur within geological confines
of major zones but have not been correlated to individual vein
domains at this time. Reported intervals include minimum weighted
averages of 3.0 g/t Au diluted over core lengths of at least 2.0
metres. All NQ core assays reported were obtained by either
1-kilogram screen fire assay or standard 50-gram fire-assaying-AA
finish or gravimetric finish at (i) ALS Laboratories in Val d'Or,
Québec, Thunder Bay, Ontario, Sudbury, Ontario or Vancouver,
British Colombia, or (ii) Bureau Veritas in Timmins, Ontario. The
1-kilogram screen assay method is selected by the geologist when
samples contain coarse gold or present a higher percentage of
pyrite than surrounding intervals. Selected samples are also
analyzed for multi-elements, including silver, using a four acids
digestion -MS61 method at ALS Laboratories. Drill program design,
Quality Assurance/Quality Control ("QA/QC") and interpretation of
results is performed by qualified persons employing a QA/QC program
consistent with NI 43-101 and industry best practices. Standards
and blanks are included with every 20 samples for QA/QC purposes by
the Corporation as well as the lab. Approximately 5% of sample
pulps are sent to secondary laboratories for check assay.
About the Windfall Gold
DepositThe Windfall gold deposit is located between
Val-d'Or and Chibougamau in Eeyou Istchee James Bay, Québec,
Canada. The mineral resource defined by Osisko, as disclosed in the
news release dated February 19, 2020 and supported by the technical
report entitled “An updated mineral resource estimate for the
Windfall Lake Project, Located in the Abitibi Greenstone Belt,
Urban Township, Eeyou Istchee James Bay, Québec, Canada” and dated
April 3, 2020 (with an effective date of January 3, 2020), and
assuming a cut-off grade of 3.5 g/t, comprises 4,127,000 tonnes at
9.1 g/t Au (1,206,000 ounces) in the indicated mineral resource
category and 14,532,000 tonnes at 8.40 g/t Au (3,938,000 ounces) in
the inferred mineral resource category. The key assumptions,
parameters and methods used to estimate the mineral resource
estimate disclosed in the February 19,2020 news release are further
described in the full technical report prepared by Micon
International Limited ("Micon") and BBA Inc ("BBA"), in accordance
with NI 43-101 available on SEDAR (www.sedar.com) under the
Corporation's issuer profile. The Windfall gold deposit is
currently one of the highest-grade resource-stage gold projects in
Canada and has world-class scale. Mineralization occurs in three
principal zones: Lynx, Main Zone, and Underdog. Mineralization is
generally comprised of deformed sub-vertical zones plunging to the
northeast. Vein-type or pyrite replacement-type styles of
mineralization crosscut syn-volcanic host rocks and syn-deformation
felsic porphyry intrusions and are spatially associated with the
contacts of the intrusions. The deposit is well defined from
surface to a depth of 1,200 metres and remains open along strike
and at depth. Mineralization has been identified 30 metres from
surface in some areas and as deep as 2,000 metres in others, with
significant potential to extend mineralization down-plunge and at
depth.
About Osisko Mining Inc.Osisko
is a mineral exploration company focused on the acquisition,
exploration, and development of precious metal resource properties
in Canada. Osisko holds a 100% interest in the high-grade Windfall
gold deposit located between Val-d'Or and Chibougamau in Québec and
holds a 100% undivided interest in a large area of claims in the
surrounding Urban Barry area and nearby Quévillon area (over 2,700
square kilometres).
Cautionary Note Regarding
Forward-Looking InformationThis news release contains
"forward-looking information" within the meaning of the applicable
Canadian securities legislation that is based on expectations,
estimates, projections and interpretations as at the date of this
news release. Any statement that involves predictions,
expectations, interpretations, beliefs, plans, projections,
objectives, assumptions, future events or performance (often, but
not always, using phrases such as "expects", or "does not expect",
"is expected", "interpreted", "management's view", "anticipates" or
"does not anticipate", "plans", "budget", "scheduled", "forecasts",
"estimates", "potential", "feasibility", "believes" or "intends" or
variations of such words and phrases or stating that certain
actions, events or results "may" or "could", "would", "might" or
"will" be taken to occur or be achieved) are not statements of
historical fact and may be forward-looking information and are
intended to identify forward-looking information. This news release
contains the forward-looking information pertaining to, among other
things: the Windfall gold deposit being one of the highest-grade
resource-stage gold projects in Canada and having world-class
scale; the key assumptions, parameters and methods used to estimate
the mineral resource estimate; the prospects, if any, of the
Windfall gold deposit; the timing and ability of Osisko, if at all,
to publish a feasibility study for the Windfall gold deposit; the
projected capital expenditures of mining activities at the Windfall
gold deposit; upgrading an inferred mineral resource to a measured
mineral resource or indicated mineral resource category; future
drilling at the Windfall gold deposit; the deposit remaining open
along strike to the northeast and at depth; significant high-grade
zones (Lynx 4, Triple Lynx) remaining open down plunge; the plunge
potential of the Lynx and Underdog zones; the significance of
historic exploration activities and results. Such factors include,
among others, risks relating to the ability of exploration
activities (including drill results) to accurately predict
mineralization; errors in management's geological modelling; the
ability of Osisko to complete further exploration activities,
including drilling; property and royalty interests in the Windfall
gold deposit; the ability of the Corporation to obtain required
approvals; the results of exploration activities; risks relating to
mining activities; the global economic climate; metal prices;
dilution; environmental risks; and community and non-governmental
actions. Although the forward-looking information contained in this
news release is based upon what management believes, or believed at
the time, to be reasonable assumptions, Osisko cannot assure
shareholders and prospective purchasers of securities of the
Corporation that actual results will be consistent with such
forward-looking information, as there may be other factors that
cause results not to be as anticipated, estimated or intended, and
neither Osisko nor any other person assumes responsibility for the
accuracy and completeness of any such forward-looking information.
Osisko does not undertake, and assumes no obligation, to update or
revise any such forward-looking statements or forward-looking
information contained herein to reflect new events or
circumstances, except as may be required by law.
CONTACT INFORMATION:John
BurzynskiChief Executive OfficerTelephone (416) 363-8653
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