The chalcopyrite is a Minéral composed of double sulfide (mass 35%), of Cuivre (34,5%) and of Fer (30,5%), of formula CuFeS2.
Chalcopyrite crystallizes in the crystalline Système tétragonal, with Groupe of space . Studies of neutron Diffraction showed that Fe and Cu are present like Fe3+ (d5) and Cu+ (d10).
This mineral, which has a hardness of 4,2, often of hydrothermal origin, extremely common, fact part of the four most abundant sulfides (Pyrite, chalcopyrite, Sphalérite, Galène) and is exploited like ore of Cuivre (Bornite and Cubanite is other important sources). One finds it into large quantities in Germany and with the Canada.
The macles are by penetration, laws (100), (110) and (111).
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