Mineral zones are defined by the relative abundance of chalcopyrite, pyrite and chalcocite, as well as the mode of occurrence of chalcocite (hypogene or supergene) and level of oxidation. Chalcopyrite and pyrite are disseminated through the potassic and overprinting chlorite-sericite zones, with minor bornite. Sulphide mineralization in the upper advanced argillic and sericitic domains includes a hypogene-enriched high-sulphidation assemblage of chalcocite with covellite, tennantite, and minor enargite, resulting in some of the highest hypogene grades in the deposit.