The area is underlain by andesitic tuffs of the Lower Jurassic Hazelton Group. Bedding attitudes vary between northwest to north and generally dip to the west. Granodiorite and associated dykes of the Cretaceous to Tertiary Coast Plutonic Complex intrude the volcanics.

Mineralization is exposed along a CNR railway cut on the south side of the Wedeene River. Stratiform pyrite and pyrite-chalcopyrite and/or malachite mineralization occurs within the bedded tuffs. The maximum exposed width of chalcopyrite and pyrite mineralization is about 0.5 metres. Seven samples were collected from the banded sulphide mineralization. Sample W-1 assayed 0.265 grams per tonne gold, 13.3 grams per tonne silver, 1.978 per cent copper and 11.069 per cent iron (Assessment Report 16860).

Bands of pyrite ranging up to a few centimetres in thickness are common in the tuffs exposed along the river and to the east of the copper-bearing outcrop. A grab sample from one of these pyritic bands (sample no. 501) assayed 0.56 grams per tonne gold and 0.13 per cent copper (Assessment Report 16860).