The Raffuse Creek area is on the eastern edge of the Britannia- Indian River pendant which hosts the volcanogenic deposits of the Britannia camp (092GNW003). The Britannia-Indian River pendant is mainly a calc-alkaline, subaqueous volcanic and sedimentary sequence of felsic to intermediate pyroclastics, flows, cherts, argillites and greywackes. The entire pendant has been classified as Gambier Group of Upper Jurassic to Lower Cretaceous age. Cenozoic to Mesozoic Coast Plutonic Complex intrusives surround portions of the stratified rocks creating screens or pendants. These bodies are oriented north- westerly throughout the Coast complex. Pliocene to Recent Garibaldi Group basaltic dykes and sills intrude both the pendant and plutonic rocks.

The Raffuse Creek occurrence is underlain by andesite of the Gambier Group and metadiorite of the Coast Plutonic Complex intruded by Garibaldi Group basalt and dacite porphyry dykes. The area is heavily faulted and intense pyritization and silicification is locally developed. A small quartz vein at the showing is mineralized with chalcopyrite, sphalerite and pyrite. A grab sample assayed 1.1 per cent copper, 5.48 per cent zinc and 12.3 grams per tonne silver (Assessment Report 11121).