Mineral: Cuprite
Locality: Poteryaevskoe Mine, Rubtsovsky District, Altai Krai, Russia
Dimensions: 6,0 x 5,5 x 5,0 cm

Description: Main crystal size: 5,7 cm Lustrous, intact, complex polysynthetic octahedron with trace amounts of micro-crystallized silver. The metallic color becoming red on the surface under strong lighting is probably due to the fact that the cuprite crystallized with a greater proportion of tenorite than that of cuprites from Africa. MIM number 1177 Photographer: Augustin de Valence (Aïnu)

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