The area is underlain by Upper Paleozoic to Jurassic cherts and rhyolite/dacite crystal tuffs and flows, with minor pyroxene por- phyry. A block of graphitic chert, with minor sphalerite and galena mineralization in thin (10 centimetres) shears, is bounded by a 060 degree fault and a northwest trending fault. Pyrite, pyrrhotite and chalcopyrite are also present.

To the north, 150 metres, graphitic pyrrhotitic cherts occur containing sphalerite. A grab sample assayed 0.15 per cent zinc, 1.7 grams per tonne silver and 0.017 per cent copper (Assessment Report 12777).

A sample of siliceous nodules in cherty sediments, 400 metres to the northwest, assayed 0.22 per cent zinc and 0.6 grams per tonne silver (Assessment Report 12777).