Kobellite
Encyclopedia : K : KO : KOB : Kobellite
Kobellite (Pb22Cu4(Bi,Sb)30S69, empiricial: Pb22Cu4Bi25Sb5S69) is a gray, fibrous, metallic mineral, a sulfide of antimony, bismuth, and lead. It is a member of the Izoklakeite - Berryite series with silver and iron substituting in the copper site and a vaying ratio of bismuth, antimony, and lead. Crystallizes with orthorhombic dipyramidal crystals. Locations include Hvena, Sweden; Ouray, Colorado; and Wake County, North Carolina, USA. Named after Wolfgang Franz von Kobell (1803-1882), German mineralogist.
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