A pyroxene quartz diorite stock of the Cretaceous to Tertiary Coast Plutonic Complex intrudes volcanics of the Jurassic Hazelton Group. A quartz-carbonate vein occurs along the upper contact of an aplitic dyke within a porphyritic pyroxene granodiorite phase of the Legate Creek apophysis. The vein contains minor limonite, malachite and sulphides, likely chalcopyrite, pyrite and galena. A 30 centimetre chip sample assayed 2.15 per cent copper and 1313 grams per tonne silver (Assessment Report 8777).

An early report describes a quartz vein along the foot of a bluff for a distance of 200 metres in a northeast direction. A 30 centimetre sample assayed 1.9 per cent copper and 54.9 grams per tonne silver (Minister of Mines Annual Report 1919).