A major ore of copper, chalcopyrite is the most abundant of the copper-bearing minerals. It is a primary mineral in hydrothermal veins and the principal copper mineral of porphyry-copper deposits. This mineral is easily recognized by its brass-yellow color and greenish-black streak. Its name is derived from the Greek word meaning "copper" and from "pyrites" meaning “strike fire.”

Mineral Photos courtesy of R.Weller/Cochise College