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RM610   Fluorapatite with marcasite, muscovite and dolomite

Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Portugal

Group of very sharp fluorapatite crystals showing defined prism faces and hexagonal dipyramids. Good transparence, color between green to greyish, depending on light. Very aesthetically disposed on a matrix of muscovite hexagonal rosettes, with white dolomite. Also with some cyclic twinned marcasite crystals, very brilliant and defined. Take a look under magnication lens. An excellent specimen from this Portuguese classic mine.

Size: 6,2 x 5,0 x 3,5 cm.
Main crystal: 17 x 15 mm.

Fluorescent under long wave UV