Volcanics of the Jurassic Hazelton Group are cut by a diorite stock of the Cretaceous to Tertiary Coast Plutonic Complex. Specularite and chalcopyrite mineralization, 2 metres wide, occurs along the contact between volcanic breccia and rhyolite, about 40 metres east of the intrusive.

A 1.8 metre sample assayed 3.5 per cent copper, 13.7 grams per tonne silver and trace gold (Minister of Mines Annual Report 1925).