Mineral: Calcite-Dolomite, Marcasite, Arsenopyrite, Muscovite
Locality: Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
Dimensions: 10 cm x 9 cm x 8 cm

Description: Detail of the crystals

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