Pyrite - Gavorrano Mine, Italy - 26 x 20,3 mm

Mineral: Pyrite
Locality: Gavorrano Mine, Gavorrano, Grosseto Province, Tuscany, Italy
Dimensions: 26 x 20,3 mm

Description: Different view with the octahedral and diploidal modifications in evidence. This octahedral face is quite odd: the lustrous central part (although not triangular) might be the real octahedral modification, while the opaque, surrounding, triangular (not complanar) frame might be a diploidal modification of first order; so that the external three bigger faces would become diploidal modifications of second order. Sorry for the nuisance...