Description: Ferberite, Siderite, Calcite Panasqueira Mine, Couto Mineiro da Panasqueira, Panasqueira, Covilhã, Castelo Branco District, Portugal 9.30 x 8 x 4.50 cm Ferberite crystals covered, on the top and on the back, by siderite, and over it by calcite

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