The Surprise Mountain area is underlain by rhythmically layered amygdaloidal, feldspar porphyritic and spherulitic basalt flows of the Upper Triassic Karmutsen Formation (Vancouver Group). Mineral- ized quartz and quartz-carbonate veins with variable sulphide content are associated with narrow, steeply dipping shear zones.

The Ram occurrence is underlain by amygdaloidal basalt of the Karmutsen Formation cut by a shear structure. The shear zone hosts pyritic quartz veins mineralized with minor amounts of chalcopyrite. A grab sample from a trench assayed 0.35 per cent copper (Assessment Report 18672).