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 the 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.

Several showings of quartz veins and stringers occur on the steep eastern slope above Moyeha Bay, at elevations ranging from 286 to 347 metres. The country rock is Karmutsen andesite that has been invaded by dykes of quartz porphyry. The veins cut both rock types and may be mineralized with pyrite plus or minus chalcopyrite. The wallrock is commonly silicified and pyritized.

The veins range from 0.5 to 20 centimetres in width and are reported, at two of the showings, to have a strike of 150 degrees and dip of 65 degrees southwest. The largest vein, dipping 60 degrees south, pinches and swells from 5 to 20 centimetres along a 100 degree strike. The exposed length of the vein is 23 metres. A 13 centimetre sample of this vein containing chalcopyrite and pyrite assayed 24.00 grams per tonne gold and 10.29 grams per tonne silver (Minister of Mines Annual Report 1935, page F45).