Mineral: Bazzite
Locality: Bois Kersy, Vallée de la Tarentaise, Bonneval-Tarentaise, La Lauzière Massif, Saint-Jean-de-Maurienne, Savoie, Auvergne-Rhône-Alpes, France
Dimensions: 9,0 x 7,0 x 3,5 cm

Description: Main crystal size : 0,7 cm Leptynite plate with on one hand a plating of small blue crystals in the form of simple hexagonal prisms extending over 23 mm, and on the other hand a large spindle-shaped crystal covered in chlorite; an ilmenite of 3 mm is on the back of the plate. Analysis of the bazzite crystals revealed a proportion of 1.92% Al2O3 and 11.59% Sc2O3 in mass, or an average of 4.4 scandium cations for 1 aluminum cation. MIM number 1347 Photographer : AINU / Alessandro Clemenza

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