Mineral: Cassiterite, Pyrite, Arsenopyrite, Siderite
Locality: Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
Dimensions: 6 cm x 4 cm x 4 cm
Description: Detail of the Arsenopyrite
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