There are 250 minerals priced at between $100 and $499.
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Several columnar crystal aggregates of kutnohorite have been completely replaced by manganoan calcite and are sprinkled with a dust of manganese. Fluoresces orange under both LW and SW.
Location: N'Chwaning Mine, Kalahari Manganese Fields, Kuruman, South Africa
Dimensions: 4 x 3 x 1.8cm