Mineral: Vauxite
Locality: Siglo Veinte Mine, Llallagua, Rafael Bustillo Province, Potosí Department, Bolivia
Dimensions: 13 x 11 x 1.5 cm / main crystal: 0.1 cm

Description: Mass: 45 g MIM number:1903 Thin crust covered with small acicular crystals of very beautiful blue color. A sample of this size is unusual for this rare species. Photographer: FMI / James Elliott Publication: "Minéraux - Le Guide des Passionnés"

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