chal·co·cite /ˈkælkəˌsaɪt/
  輝銅礦
  Chal·co·cite n.  Min. Native copper sulphide, called also copper glance, and vitreous copper; a mineral of a black color and metallic luster. [Formerly written chalcosine.]
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  chalcocite
       n : a heavy gray mineral that is an ore of copper [syn: copper
           glance]