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
See also: list of minerals
