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Chalcopyrite (/ ˌ k æ l k ə ˈ p aɪ ˌ r aɪ t,-k oʊ-/ [7] [8] KAL-kə-PY-ryte, -koh-) is a copper iron sulfide mineral and the most abundant copper ore mineral. It has the chemical formula CuFeS 2 and crystallizes in the tetragonal system.
Talnakhite is a mineral of chalcopyrite group with formula: Cu 9 (Fe, Ni) 8 S 16. [2] It was named after the Talnakh ore deposit, near Norilsk in Western Siberia, Russia where it was discovered as reported in 1963 by I. Budko and E. Kulagov. [3]
Formula % Copper when pure Chalcopyrite: CuFeS 2: 34.5 Chalcocite: Cu 2 S: 79.8 Covellite: CuS: 66.5 Bornite: 2Cu 2 S·CuS·FeS 63.3 Tetrahedrite: Cu 3 SbS 3 + x(Fe ...
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Bornite is an important copper ore mineral and occurs widely in porphyry copper deposits along with the more common chalcopyrite.Chalcopyrite and bornite are both typically replaced by chalcocite and covellite in the supergene enrichment zone of copper deposits.
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It has the chemical formula CuFe 2 S 3 and when found, it has a bronze to brass-yellow appearance. On the Mohs hardness scale, cubanite falls between 3.5 and 4 and has a orthorhombic crystal system. [2] Cubanite is chemically similar to chalcopyrite; however, it is the less common copper iron sulfide mineral due to crystallization requirements.