Mineral: Bismuthinite
Locality: Tazna Mine (Tazna-Rosario Mine), Cerro Tazna, Atocha-Quechisla District, Nor Chichas Province, Potosí Department, Bolivia
Dimensions: 2.5 x 1.5 x 6.5 cm / main crystal: 6.5 cm

Description: Mass: 32 g MIM number:1813 Very well formed crystal for the species, with a wedged termination. The crystal is coated with a thin layer of gray-black marcasite. Photographer: AINU / Augustin de Valence

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