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Kobellite

Kobellite (Pb₂₂Cu₄(Bi,Sb)₃₀S₆₉, empiricial: Pb₂₂Cu₄Bi₂₅Sb₅S₆₉) is a gray, fibrous, metallic mineral, a sulphide of antimony, bismuth, and lead. Named after Wolfgang Franz von Kobell[?] (1803-1882), German mineralogist.

(Cu,Fe)₂Pb₁₂(Bi,Sb)₁₄S₃₅

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