chalcopyrite
noun
chal·co·py·rite ˌkal-kə-ˈpī-ˌrīt 
: a yellow mineral that consists of a sulfide of copper and iron and is an important copper ore
Example Sentences
Recent Examples on the Web These include azurite, malachite (both copper carbonate hydroxide minerals), chalcocite (a copper-sulfide), acanthite (a copper-silver sulfide), chalcopyrite and bornite. 
David Bressan, Forbes, 4 July 2021
David Bressan, Forbes, 4 July 2021 Word History
Etymology
New Latin chalcopyrites, from Greek chalkos + Latin pyrites
First Known Use
1835, in the meaning defined above