Mineral: Bournonite on Pyrite
Locality: Noche Buena Mine, Noche Buena, Municipio Mazapil, Zacatecas, Mexico
Dimensions: 9,0 x 7,5 x 4,5 cm

Description: Main crystal size: 3,9 cm Silvery tabular crystal on pyrite matrix MIM number 950 Photographer: Augustin de Valence (Aïnu)

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