The Minto Extension occurrence is located on a south- facing slope north of Carpenter Lake, approximately 6.7 kilometres west- north west of Tyaughton Creek’s mouth on the lake.
The area is underlain mainly by volcanics and sediments of the Mississippian to Jurassic Bridge River Complex (Group). A few small outcrops of sedimentary rocks of the overlying Lower Cretaceous Taylor Creek Group are reported to occur.
Locally, a pyritic chert pebble conglomerate contains a mineralized zone with disseminated, blebby and massive pyrite, stibnite, sphalerite, arsenopyrite and galena. The zone strikes north- south, dips 60 degrees west and has been intercepted by drill holes to a depth of 50 metres.
In 1988, a trench sample (MET 88-1) assayed 4.42 grams per tonne gold over 9.5 metres (Assessment Report 19843). The following year, diamond drilling intercepted values up to 25.0 grams per tonne gold over 0.3 metre from drill hole 89-ME-3, 6.8 metres averaging 4.70 grams per tonne gold from drill hole 89-ME-2 and 2.85 grams per tonne gold with 33.6 grams per tonne silver and 6.27 per cent antimony over 0.5 metre from drill hole 89-ME-1 (Assessment Report 19843).
In 1985, Levon Resources completed a program of soil sampling and geological mapping on the area as the Whynot 1-3 claims. In 1988, Avino Mines & Resources completed a program of soil sampling, trenching and a 53.9 line-kilometre airborne geophysical survey on the area as the Minto Extension 1-2 claims. The following year, five diamond drill holes, totalling 609.6 metres, were completed. In 2015, a minor program of geochemical and biogeochemical sampling was completed on the area as the Bridge Epi property.