Rare Berthierite with included calcites on Pyrite Matrix. For the expert collector.
Dimensions (millimeters): 45 x 25 x 20
Dimensions (inches): 1.8 x 1 x .75
Origins: from San Martin Mine, Zacatecas, Mexico
FeSb2S4, lab analyzed for accuracy. The blue is a natural patina. Collected in Mexico in the 1980s
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