The deposit lies just north of the Cretaceous Baldy Batholith and within metasediments and metavolcanics of the Devonian Eagle Bay Formation. Copper mineralization is confined to tabular-shaped zones within quartz-sericite phyllites and lesser amounts of quartzite. Chaclopyrite occurs as disseminations and patches along foliations, in steeply dipping north striking fractures, within quartz and quartz- carbonate veins and with massive pyrite-pyrrhotite. Sphalerite, galena, arsenopyrite, molybdenite, tentrahedrite-tennanite, bornite, and cubanite are present in minor quantities. Magnetite occurs locally as massive lenses containing minor chalcopyrite. Reserves in the East zone are estimated at 42,500,000 tonnes grading 0.39 per cent copper, 0.043 grams per tonne gold and 2.4 grams per tonne silver. The West zone contains an estimated 53,500,000 tonnes grading 0.42 per cent copper, 0.047 grams per tonne gold and 2.6 grams per tonne silver.