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chalcocite    

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  • Chalcocite - Wikipedia
    Chalcocite ( ˈkælkəˌsaɪt ), [6][7] copper (I) sulfide (Cu 2 S), is an important copper ore mineral It is opaque and dark gray to black, with a metallic luster
  • Chalcocite: Mineral information, data and localities.
    Chalcocite easily converts to djurleite under the electron beam through the rearrangement of Cu atoms (Pósfai and Buseck, 1994) Small amounts of the Cu2S phase may deposit from supersaturated volcanic gas, as shown in an experiment (Africano et al , 2002; 300-700oC deposition range for this particular experiment) Compare UM2003-43-S:CuFePdPt
  • Chalcocite Mineral Data
    Secondary mineral in or near the oxidized zone of copper sulfide deposits Cornwall, England and Butte, Montana Link to MinDat org Location Data From the Greek, meaning chalkos, "copper" Comments: Chalcocite crystals in this specimen vary in size up to 1 2 cm across Location: Bristol nr Hartford, Connecticut, USA Scale: 7 6 x 4 cm
  • Chalcocite | Copper Ore, Sulfide Ore, Ore Mining | Britannica
    Chalcocite (Cu 2 S) belongs to a group of sulfide minerals formed at relatively low temperatures (see also argentite) Chalcocite alters to native copper and other copper ores
  • CHALCOCITE (Copper Sulfide) - Amethyst Galleries
    The chalcocite blanket represents a real gold mine, or should that be copper mine, to the copper prospectors Fine crystals of chalcocite are quite uncommon and are much sought after
  • Chalcocite - Korhogo Minerals
    Chalcocite is a copper sulfide mineral with the formula Cu2S As a member of the copper sulfide family, it has a high copper-to-sulfur ratio and is often one of the richest copper ores by weight Typical specimens are opaque with a metallic luster and a color ranging from lead-gray to nearly black
  • CHALCOCITE
    Chalcocite is a significant copper ore mineral having the formula Cu2S - copper sulfide It's got a metallic luster, a dark gray to black color streak, no obvious cleavage, is moderately heavy for its size, and is moderately soft (H = 2 5 to 3)
  • Chalcocite – WGNHS – UW–Madison
    Chalcocite is formed either as a primary vein mineral or, more typically, in supergene deposits where it forms as a result of the redeposition of copper from the breakdown of minerals such as chalcopyrite or bornite
  • Chalcocite Cu2S - Handbook of Mineralogy
    Occurrence: An uncommon primary hydrothermal mineral but important as a secondary mineral Found in or below the zone of oxidation in hydrothermal veins and in large low-grade porphyry copper orebodies Pyrite, chalcopyrite, covellite, bornite, molybdenite, many other sulfides and their alteration products
  • Chalcocite - Details and Facts - allmineralsrock
    Chalcocite is a copper sulfide mineral that has a dark gray to black color and a metallic luster Its chemical formula is Cu2S, and it has a hardness of 2 5-3 on the Mohs scale Chalcocite is often found in hydrothermal veins and is associated with other copper sulfide minerals such as chalcopyrite and bornite





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