[kal-kuh-pahy-rahyt] 
| a very common mineral, copper iron sulfide, CuFeS2, occurring in brass-yellow crystals or masses: the most important ore of copper; copper pyrites. |
| chal·co·py·rite (kāl'kə-pī'rīt') n. A yellow mineral, essentially CuFeS2, that is an important ore of copper. Also called copper pyrites. [New Latin chalcopyrites : Greek khalkos, copper + pyrites.] |
kəˈpaɪ