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pyrites$65876$ - traduction vers allemand
![The [[unit cell]] of chalcopyrite. Copper is shown in pink, iron in blue and sulfur in yellow.](https://commons.wikimedia.org/wiki/Special:FilePath/Chalcopyrite-unit-cell-3D-balls.png?width=200 "The [[unit cell]] of chalcopyrite. Copper is shown in pink, iron in blue and sulfur in yellow.")
![Copper [[flash smelting]] process, a pyrometallurgical method of copper extraction from chalcopyrite.](https://commons.wikimedia.org/wiki/Special:FilePath/Copper Flash Smelting Process (EN).svg?width=200 "Copper [[flash smelting]] process, a pyrometallurgical method of copper extraction from chalcopyrite.")
![Timmins, Ontario]], Canada. The brassy-yellow mineral is chalcopyrite- the primary ore mineral at this mine.](https://commons.wikimedia.org/wiki/Special:FilePath/Polymetallic massive sulfide (Middle Tholeiitic Unit, Kidd-Munro Assemblage, Neoarchean, 2.711 to 2.719 Ga; Potter Mine, east of Timmins, Ontario, Canada) 2 (47820008922).jpg?width=200 "Timmins, Ontario]], Canada. The brassy-yellow mineral is chalcopyrite- the primary ore mineral at this mine.")
Définition
Wikipédia
Chalcopyrite ( KAL-kə-PY-ryte, -koh-) is a copper iron sulfide mineral and the most abundant copper ore mineral. It has the chemical formula CuFeS2 and crystallizes in the tetragonal system. It has a brassy to golden yellow color and a hardness of 3.5 to 4 on the Mohs scale. Its streak is diagnostic as green-tinged black.
On exposure to air, chalcopyrite tarnishes to a variety of oxides, hydroxides, and sulfates. Associated copper minerals include the sulfides bornite (Cu5FeS4), chalcocite (Cu2S), covellite (CuS), digenite (Cu9S5); carbonates such as malachite and azurite, and rarely oxides such as cuprite (Cu2O). It is rarely found in association with native copper. Chalcopyrite is a conductor of electricity.
Copper can be extracted from chalcopyrite ore using various methods. The two predominant methods are pyrometallurgy and hydrometallurgy, the former being the most commercially viable.
