Calcite (variety manganoan calcite) - N'Chwaning mining area, South Africa - 70 mm x 55 mm x 47 mm
Mineral:
Calcite (variety manganoan calcite)
Locality:
N'Chwaning mining area, Kuruman, Kalahari manganese field (KMF), Northern Cape Province, South Africa
Dimensions:
70 mm x 55 mm x 47 mm
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