New Latin chalcopyrites, from Greek chalkos + Latin pyrites
First Known Use: 1835
Most common copper mineral, a copper and iron sulfide (CuFeS), and a very important copper ore. It typically occurs in ore veins deposited at medium and high temperatures, as in parts of Spain, Japan, Montana, and Missouri. Chalcopyrite is a member of a group of sulfide minerals, and it crystallizes in the tetragonal crystal system. Its atomic structure is related to that of sphalerite.