Mineral: Stephanite
Locality: San Juan de Rayas Mine, Guanajuato, Municipio Guanajuato, Mexico
Dimensions: 5,5 x 3,0 x 4,5 cm

Description: Main crystal size: 3,7 cm Two well formed, thick, gray tabular crystals MIM number 914 Photographer: Augustin de Valence (Aïnu)

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