The claims are underlain by Lower Jurassic Hazelton Group volcanics comprised mainly of green to purple andesitic flows, tuff and breccia. The volcanics are intruded by a Late Cretaceous to Eocene granodioritic stock.

Copper and silver mineralization occurs in fractures and as disseminations of pyrite and chalcopyrite in the Hazelton volcanics and granitic intrusive rocks.

In 1969, the claims were explored by Telkwa Mountain Mines Limited as the Starr Creek property. See Starr occurrence (093L 069) for more information.