Permian phyllites and metavolcanics, overlain by Mississippian carbonates and Jurassic conglomerates are intruded by Jurassic(?) granite and covered by Quarternary olivine basalts and glacial tills. Major structures trend northeast to north-northeast and are altered. In the discovery area, the granite-phyllite contact zone, which dips 35 to 60 degrees, is silicified and pyritized. Where the contact zone is cut by northeast trending shear zones, pipe-like silicified bodies are produced in the granite, with silica pyrite breccias along the shear zones carrying economic gold grades. Alteration includes sericitization, ankeritization and chloritization.