Mineral: Acanthite
Locality: San Juan de Rayas Mine, Guanajuato, Municipio Guanajuato, Mexico
Dimensions: 10,0 x 4,0 x 3,0 cm

Description: Main crystal size: 3,2 cm Elongated ensemble of very sharp-edged crystals, some having faces that appear to be melted MIM number 890 Photographer: Augustin de Valence (Aïnu)

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