Description: Polybasite Banská Štiavnica (Schemnitz), Banská Štiavnica Co., Banská Bystrica Region, Slovakia 9x6x5 cm Uncommon, rare, very old sample with many dark gray to brownish (due to alteration) Polybasite in matrix. The crystals are up to 2 cm, partially covered by whitish Calcite.

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