/kal'keuh puy"ruyt/, n.a very common mineral, copper iron sulfide, CuFeS2, occurring in brass-yellow crystals or masses: the most important ore of copper; copper pyrites.[1825-35; CHALCO- + PYRITE]
* * *Most common copper mineral, a copper and iron sulfide (CuFeS2), 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.
* * *▪ mineralthe most common copper mineral, a copper and iron sulfide, and a very important copper ore. It typically occurs in ore veins deposited at medium and high temperatures, as in Río Tinto, Spain; Ani, Japan; Butte, Mont.; and Joplin, Mo. Chalcopyrite (Cu2Fe2S4) is a member of a group of sulfide minerals that crystallize in the tetragonal system; the group also includes stannite. Both minerals have crystalline structures related to sphalerite. For detailed physical properties, see sulfide mineral (table).
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