The area is underlain by Upper Triassic Karmutsen Formation volcanic rocks of the Vancouver Group. These are interbedded with, and overlain to the northeast by a northwest trending belt of Quatsino Formation limestone (Vancouver Group) known historically as the "lime-belt". The Vancouver Group rocks are in fault and/or intrusive contact to the northeast with intrusive rocks of the Juro- Cretaceous Coast Plutonic Complex.

A shaft has been sunk 12 metres on pyrrhotite occurring in lime- stone that strikes north and dips 75 degrees east. A 1.2 metre wide zone of ore occurs in the bottom of the shaft and a 7.5 metre width of ore occurs on the surface. The ore occurs in north trending fissures cutting andesite and consists of crystalline calcite and quartz containing pyrite, pyrrhotite and minor chalcopyrite. A sample from the surface assayed 2.06 grams per tonne gold, 6.86 grams per tonne silver and 2.7 per cent copper (Minister of Mines Annual Report 1913, page 285).