Ferberite, Siderite
Small Cabinet, 8.6 x 5.4 x 4.7 cm
Panasqueira Mine - Couto Mineiro da Panasqueira, Panasqueira, Covilha, Castelo Branco District, Portugal
A SUPERB and highly lustrous, columnar black ferberite specimen from Portugal. The terraces, sides and top of the specimen are capped by tiny, lustrous tan siderite discs, which add pizzazz to this fine piece. Arsenopyrite crystals, more siderite crystals and calcite crystals coat the back. 8.6 x 5.4 x 4.7 cm