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vitreous copper ore

A monoclinic mineral, 96(Cu2S) ; pseudohexagonal, metallic gray-black with blue to green tarnish; sp gr, 5.5 to 5.8; a secondary vein mineral; an important source of copper.

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  • ed.young
  • (Milwaukee, United States)

  •  (V.I.P) 21084 分数
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