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blue-black ore

A monoclinic mineral, (Na,K,Ca,Mg)2(V5+,V4+)8O26.6-10H2O ; weakly radioactive; associated with carnotite in Colorado and Utah; a source of vanadium.

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  • ed.young
  • (Milwaukee, United States)

  •  (V.I.P) 21084 分数
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