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Osisko Infill continues to deliver with 342 g/t Au over 2.5m

Mar 1, 2021

Osisko Mining Inc. is providing 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.

Infill drilling is currently focused on the Lynx deposit. Osisko Chief Executive Officer John Burzynski commented: “Lynx continues to deliver with high-grade and width as we infill the mineral resource estimate (“MRE”) areas published earlier this month.”

Select intercepts include: 342 g/t Au over 2.5 metres in OSK-W-20-1432-W2; 37.7 g/t Au over 7.2 metres in OSK-W-20-2283-W5; 56.4 g/t Au over 4.0 metres18.3 g/t Au over 5.5 metres and 45.3 g/t Au over 2.1 metres in OSK-W-20-2256-W8; 79.8 g/t Au over 2.4 metres in OSK-W-20-2397; 63.8 g/t Au over 2.4 metres in OSK-W-20-2271-W6; 36.0 g/t Au over 2.7 metres in WST-20-0548A; 42.2 g/t Au over 2.0 metres in OSK-W-20-2280-W6; and 21.1 g/t Au over 4.0 metres in OSK-W-20-2283-W4. Maps showing hole locations and full analytical results are available at www.osiskomining.com

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

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