Assertion: chalcopyrite | /r/HasProperty | brass-yellow mineral
Facets:
value: with a chemical composition of cufes
type: OTHER
Source sentences:
text: Chalcopyrite is a brass-yellow mineral with a chemical composition of CuFeS 2 .
text: Chalcopyrite: CuFeS(2) - Brass yellow
text: An additional point to note is that chalcopyrite, a brass-yellow mineral, has been considered the “most important” ore of copper for thousands of years.
text: Chalcopyrite | Article about chalcopyrite by The chalcopyrite (kăl'kəpī`rīt, kăl`kōpī'rīt) or copper pyrites (pīrī`tēz, pə–), brass-yellow mineral, sometimes with an iridescent tarnish.