The area is underlain by the Shuswap Metamorphic Complex. Pyrite and galena occur in a northwest trending, southwest dipping quartz-sulphide lens within a quartz-feldspar-muscovite granite gneiss.
A 2 metre chip sample assayed 3.3 per cent lead, 113.5 grams per tonne silver and 0.03 per cent copper, and trace gold (Property File, White, 1982). A 2.4 by 2.4 metre chip sample assayed 5.9 per cent lead and 391 grams per tonne silver and a grab sample assayed 15.5 per cent lead, 3.7 per cent zinc and 631 grams per tonne silver (Property File; Plan, Mad River Group Showings, 1935).