The area is predominantly underlain by massive limestone of the Upper Triassic Quatsino Formation (Vancouver Group) cut by a suite of elongate hornblende-rich dioritic intrusions that commonly contain mafic xenoliths and occupy major fractures. Mafic diorite dykes exhibit varying degrees of endoskarn alteration but exoskarn halos are generally less than 1 metre thick and, in many places, are totally lacking.

The Canada showing is underlain by Quatsino Formation limestone cut by a north trending mafic diorite dyke. Mineralization is hosted in the skarn-altered dyke and comprises minor amounts of pyrite, bornite, chalcopyrite, pyrrhotite, sphalerite, galena and magnetite (see Loyal, 092F 265). Rock samples from massive magnetite skarn with chalcopyrite and pyrite assayed up to 15.94 grams per tonne gold (Assessment Report 18672).