Tetrahedrite, Siderite

Specimen ID: 6D8-MGG

Tetrahedrite : Cu6(Cu4X2)Sb4S13
Siderite : FeCO3
Mindat locality:

Photo added to mindat.org

Superb crystal of tetrahedrite from the collection of Erich Lück. Photographed about 1978. Reproduction of a 6x6cm slide.
Volker Betz - 9th August 2016
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