"Kobellite (Pb22Cu4(Bi,Sb)30S69) is a gray, fibrous, metallic mineral. It is also a sulfide mineral consisting 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 varying ratio of bismuth, antimony, and lead. It crystallizes with monoclinic pyramidal crystals. The mineral can be found in ores and deposits of Hvena, Sweden; Ouray, Colorado; and Wake County, North Carolina, US. The mineral was named after Wolfgang Franz von Kobell (1803–1882), a German mineralogist." - (en.wikipedia.org 08.03.2020)
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