EXPLORATION & DEVELOPMENT

Osisko confirms Triple 8 discovery

Approaching a main source of Windfall mineralising system

 Recent drilling has traced mineralisation at the new Triple 8 discovery over 85m wide, on scale the company says it has not seen at Windfall Lake before

Recent drilling has traced mineralisation at the new Triple 8 discovery over 85m wide, on scale the company says it has not seen at Windfall Lake before

Recent drilling has traced mineralisation at the new Triple 8 discovery over widths to 85m, on a scale the company says it has not seen at Windfall Lake before.

Osisko had in May started two deep drill holes to investigate the potential for depth extensions of the Lynx and Underdog mineralised zones, as well as to further test the intrusion-related geological model for the Windfall deposit at depths of about 2,000-2,500m from surface.

The results confirmed and expanded the Triple 8 discovery, which falls well outside the area of the recently announced Windfall mineral resource estimate.

Results include 17.4 grams per tonne (gpt) gold over 13.7m, including 26.3gpt gold over 6.5m, and 6.31gpt gold over 12.5m, including 21.1gpt gold over 3.2m.

Wedge-hole OSK-W-18-1603-W2 intersected a zone of sericite and silica alteration over 85m containing sulphides and zones of gold mineralisation from about 1,485m to about 1,570m downhole. This alteration zone includes two significant gold bearing intervals located between about 1,510-1,554m downhole, the company says.

The new wedge extends the Triple 8 zone by 50m to the south from the discovery hole OSK-W18-1603. While the Triple 8 geometry is still being interpreted, the zone appears to remain open in all directions. Previously drilled wedge OSK-W-18-1603-W1 intersected a fault zone and porphyritic intrusive in the anticipated Triple 8 area.

"We are confident that as we progress with drilling the deeper sections of the Windfall deposit we will continue to have discovery success," president and CEO John Burzynski says.

A growing series of reports, each focused on a key discussion point for the mining sector, brought to you by the Mining Journal Intelligence team.

A growing series of reports, each focused on a key discussion point for the mining sector, brought to you by the Mining Journal Intelligence team.

editions

ESG Mining Company Index: Benchmarking the Future of Sustainable Mining

The ESG Mining Company Index report provides an in-depth evaluation of ESG performance of 61 of the world's largest mining companies. Using a robust framework, it assesses each company across 9 meticulously weighted indicators within 6 essential pillars.

editions

Mining Journal Intelligence Global Leadership Report 2024: Net Zero

Gain insights into decarbonisation trends and strategies from interviews with 20+ top mining executives and experts plus an industrywide survey.

editions

Mining Journal Intelligence Project Pipeline Handbook 2024

View our 50 top mining projects, handpicked using a unique, objective selection process from a database of 450+ global assets.

editions

Mining Journal Intelligence Investor Sentiment Report 2024

Survey revealing the plans, priorities, and preferences of 120+ mining investors and their expectations for the sector in 2024.