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Comments: Dark, purplish black, massive famatinite.
Location: Tertiary volcanic massif, the Serrania de Laurani, Bolivia.
Scale: Picture size 2 cm.
© Dave Barthelmy
Famatinite: Cu3SbS4 Enargite: Cu3AsS4
Comments: Violet metallic crystalline famatinite with black massive enargite.
Location: Cerro de Pasco, Pasco, Peru.
Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species