Kalahari manganese fields, Northern Cape Province, South Africa

8 x 5 x 4.1 cm
3.1 x 2 x 1.6 in

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Well formed, rhombohedral, Calcite crystals which have a high, glossy luster and have beveled edges. The color of these crystals is near white with a gray tint and are translucent to clear in places. The Calcite crystals are on a bed of light orange colored material which has the appearance of Olmiite. There is an unidentified white material, composed of small spheres, overcoating much of the orange material and one side of the Calcite crystals. This material does not react to HCl. Under SW UV, the Calcite fluoresces a red/orange and the unidentified white material, a white/blue. But, the fluoresces is not strong (which is why the last picture is a bit blurry).

Condition: Very Good to Excellent

Flaws: The white encrustation has peeled off in pieces. More could be removed easily if desired as I was able to remove a piece with my fingernail.

This mineral is also found in the following galleries: Minerals From Africa | Calcite | Calcite | Fluorescents | Minerals Priced Between 25 and 49 Dollars