The property is underlain by Upper Triassic Karmutsen Formation (Vancouver Group) basaltic volcanics overlain by Upper Triassic Sadler Formation limestone. The Karmutsen rocks are interbedded with lenses of limestone and minor argillite. A variety of felsic volcanics occur throughout the area intercalated with Karmutsen mafic volcanics. These felsic rocks may be related to the Karmutsen eruptions or may be later intrusions. A granodiorite to tonalitic pluton, probably related to the Middle Jurassic San Christoval Plutonic Suite, intrudes the strata. The Karmutsen volcanics in this area strike northwest and dip shallowly southwest.
Two major fracture orientations dominate both topography and distribution of alteration and mineralization. A major fault system extends from Buck Point, southeast for 40 kilometres to the head of Peel Inlet, and a major northeast trending fracture zone controls silicification in the area.
Zone A consists of a northwest trending felsic dike on the south side of the main valley creek near the head of Kitgoro Inlet. The dike is locally intensely quartz veined and silicified containing up to 4 per cent pyrite and arsenopyrite as disseminations and veinlets. Mineralized outcrops occur in an area about 50 metres long and 20 metres wide (Westerman, C.J., 1987).
Two rock chip samples taken by Noranda in 1979 contained 6.0 grams per tonne gold and 0.9 gram per tonne gold. The former value was derived from a 5 centimetre wide arsenopyrite vein (Assessment Report 7625).