The occurrence is situated near the eastern margin of the Coast Crystalline Complex. The property is mainly underlain by the Paleozoic (?) Gamsby Group which on the property is represented by dacitic-andesite, phyllite and phyllitic siltstone. These rocks are intruded by plutons ranging in composition from quartz diorite to quartz monzonite. Rhyolite dikes or sills also occur in both the volcanics and sediments. Two types of massive copper-silver mineralization are associated with skarn lenses within phyllites. One type consists of bornite accompanied by wollastonite, while the other type consists of chalcopyrite accompanied by andradite garnet. Discontinuous bands of sphalerite also occur locally. The largest observed lens measures approximately 90 metres by 13 metres.