The showing occurs in andesitic volcanic rocks of the Lower Jurassic Hazelton Group, just east of the contact with a tongue of Jurassic to Cretaceous granodiorite. Minor amounts of copper coats fracture faces in the volcanics.
In 1969, the showing was explored by Telkwa Mountain Mines Limited as the Starr Creek property. See Starr occurrence (093L 069) for more information.