Mineral: Stibnite
Locality: San Martín Mine, San Martín, San Martín-Sabinas District, Municipio Sombrerete, Zacatecas, Mexico
Dimensions: 4.6 x 7.3 x 10.7 cm
Description: Metallic lead gray stibnite crystals to 4.5 cm in length on a gray matrix. The Spanish first began mining at this locality in 1555.
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