The occurrence is located near the northwest corner of the head of Herbert Inlet. To the east of the occurrence the area is underlain by volcanics of the Upper Triassic Karmutsen Formation (Vancouver Group); to the west the volcanics are intruded by a stock of Jurassic Island Plutonic Suite. These plutonic rocks on Vancouver Island vary in composition from gabbro to quartz monzonite but are mainly granodiorite and quartz diorite.
A trench at 260 metres elevation has exposed three parallel fissures filled by quartz and pyrite that strike 135 degrees and dip 45 degrees southwest through quartz porphyry. The footwall vein, with a width of 20 centimetres, is the widest. The footwall of this vein has a 5 centimetre wide envelope of gouge.
The second trench, 30 metres northwest from the first, exposes similar mineralization and vein structure. A vertical rock face hosts numerous small tight quartz veins ranging from from 0.5 to 5 centimetres in width. There is also a footwall seam of gouge 15 centimetres thick that contains abundant pyrite. A bulk sample of this material was reported to contain 137.14 grams per tonne gold and and 13.71 grams per tonne silver (Minister of Mines Annual Report 1935, page F46).