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Chalcopyrite

Chalcopyrite is a brassy yellow mineral that tarnishes to irridescent blues, greens, yellows and purples.

Chemical Formula: CuFeS₂

Other names: Fool's Gold, Copper iron disulfide

Layman's explanation: Chalcopyrite looks like and is easily confused with Pyrite, FeS2. The name comes from the Greek word chalkos, "copper", and pyrites, "fiery." Chalcopyrite is one of the minerals refered to as "Fool's Gold" because of its bright golden color when untarnished. Chalcopyrite is one of the most widely distributed copper minerals, and is an important source for that metal. Chalcopyrite is found in number of different environments around the world, and occurs with barite, bornite, lawsonite, copper, gold, and other pyrites.

Keywords: Pyrite, Copper, Fool's Gold, Mineal

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