Robinsonite - Tunnel di Sant'Olga, Monte Arsiccio Mine, Italy - 6 x 3 x 3.5 cm / main crystal: 1.5 cm

Mineral: Robinsonite
Locality: Tunnel di Sant'Olga, Monte Arsiccio Mine, Sant'Anna (Sant'Anna di Stazzema), Apuan Alps, Stazzema Municipality, Lucca Province, Tuscany, Italy
Dimensions: 6 x 3 x 3.5 cm / main crystal: 1.5 cm

Description: Mass: 45 g MIM number:2033 Tuft of lustrous black acicular crystals developed on the top of a block of white matrix. Photographer: AINU / Augustin de Valence Ex collection: Stefano Magnanelli (Italie)