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bournonite
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English Dictionary: bournonite by the DICT Development Group
1 result for bournonite
From Webster's Revised Unabridged Dictionary (1913) [web1913]:
   Bournonite \Bour"non*ite\, n. [Named after Count Bournon, a
      mineralogist.] (Min.)
      A mineral of a steel-gray to black color and metallic luster,
      occurring crystallized, often in twin crystals shaped like
      cogwheels (wheel ore), also massive. It is a sulphide of
      antimony, lead, and copper.
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