The claims are underlain by Lower Jurassic Hazelton Group volcanics comprised mainly of andesite, tuff, flow breccia and rhyodacite to rhyolitic flows.

At elevation 549 metres, a sparsely mineralized shear zone in the andesite strikes 285 degrees and dips 60 degrees southwest. The shear hosts minor galena, sphalerite and pyrite. Two other parallel mineralized shear zones striking northwest host malachite staining with the upper zone hosting minor tetrahedrite. A selected sample from the upper zone in 1927 assayed trace gold, 3566 grams per tonne silver and 1.5 per cent copper (Minister of Mines Annual Report 1927, page 137).