The occurrence is situated near the eastern margin of the Coast Crystalline Complex. The property is mainly underlain by the Paleozoic (?) Gamsby Group which near the occurrence is represented mainly by dacitic-andesite. These rocks are intruded by plutons ranging in composition from quartz diorite to quartz monzonite. Rhyolite dikes or sills also occur in the volcanics. Abundant quartz veining carries pyrite, chalcopyrite, bornite and galena mineralization. The quartz veins range in length from less than one metre up to approximately 50 metres and vary in width from less than one centimetre up to about one metre. The veins are generally small, discontinuous and sporadic.