Mineral: Quartz with Siderite and Arsenopyrite inclusions
Locality: Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
Dimensions: 20 x 9 x 18.5 cm

Description: Mass: 1200 g MIM number: 1541 Probable year of extraction : 1979 Well formed double-terminated quartz with inclusions of arsenopyrite at the base, topped by 3 lenticular crystals of ochre colored siderite (the largest crystal measures 5.4 cm) and by micro-crystals of siderite carpeting one face. Photographer: AINU / Augustin de Valence;

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