The area is underlain by limestone and argillite of the Jurassic to Triassic Kunga Group which is intruded by felsic sills related to the Eocene-Oligocene Kano Plutonic Suite (Carpenter Bay Dike Swarm). The Kunga limestones are conformably underlain by Vancouver Group, Upper Triassic Karmutsen Formation volcanics.

Iron skarn mineralization occurs in limestone adjacent to a felsic sill near the Karmutsen contact. The skarn is a pod of massive magnetite, 1.5 to 3 metres wide and 10 metres long with a selvage (less than a metre) of pyrite, magnetite and chalcopyrite.

Between 1979 and 1982, Placer Development Limited conducted sampling and geological mapping. In 1987, G.G. Richards sampled the property.