Mineral: Acanthite
Locality: San Juan de Rayas Mine, Guanajuato, Municipio Guanajuato, Mexico
Dimensions: 6,5 x 5,5 x 4,0 cm

Description: Main crystal size: 2,2 cm Aggregate of intact, brilliant, parallel pseudo-cubic crystals MIM number 887 Photographer: Augustin de Valence (Aïnu)

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