Lasqueti Island is dominated by dark, grey-green amygdaloidal and agglomeratic basalt of the Upper Triassic Vancouver Group, Karmutsen Formation. Regional bedding strikes northwest and dips moderately northeast. The volcanic rocks are locally intruded in the False Bay area by a north-northeast trending stock of Early to Middle Jurassic Island Plutonic Suite quartz diorite. Narrow shear zones along the stock margins are common and locally contain minor quartz veining. Some hornfelsing of the basalt is also common along the quartz diorite contact but is not significant on a large scale.

Seams of massive sulphide mineralization in the area is often associated with the shear zones along the quartz diorite contact. These zones are narrow, less than 2 metres wide, strike from 010 to 040 degrees and are evident in basalt and quartz diorite.

The Juneau occurrence area is underlain by locally altered basalt of the Karmutsen Formation in contact with quartz diorite of the Island Plutonic Suite. At the contact, a short adit (Ohm adit) explores narrow vertical shear zones striking 020 degrees and hosting massive pyrite and chalcopyrite. Quartz veining also occurs with massive to disseminated chalcopyrite and pyrite mineralization. A sample from the adit assayed 0.04 per cent copper, 1.92 grams per tonne gold and 4.5 grams per tonne silver (Assessment Report 16086). Quartz veins hosted in basalt occur 200 metres to the north in a gravel pit.

Approximately 600 metres along a north-northeast strike from the Ohm adit, several pits and trenches which historically explored 3 narrow, parallel quartz veins striking 035 degrees occur. The veins are hosted in shear zones in quartz diorite near the contact with basalt and contain disseminated chalcopyrite, chalcocite, bornite and pyrite. The easternmost vein trends onto the Venus property (092F 131) to the east. Recent rock samples assayed 0.24 per cent copper, 6.07 grams per tonne gold and 21.9 grams per tonne silver (Assessment Report 16086).