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Lengenbachite: Pb6(Ag,Cu)2As4S13
Comments: Metallic gray, thin plates and sheets of lengenbachite in a vug in white dolomite. Location: Lengenbach quarry, Binntal, Valais, Switzerland. Scale: Picture width 1.2 cm. © Walter Gabriel
Comments: Shiny, opaque crystalline spray of lengenbachite on white dolomite?. Location: Lengenbach quarry, Binntal, Valais, Switzerland. Scale: Not Given. © Lou Perloff / Photo Atlas of Minerals