Gaudefroyite on andradite
description: LOCALITY: Wessels Mine, Kuruman, Northern Cape Province, South Africa 4" across The reverse side of this mold of micro-crystalline andradite is totally encrusted by crystals of metallic black gaudefroyite. This rare species reaches its ultimate development in Kuruman. The colorless crystals present on the reverse side of this piece are barite.
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