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Gaudefroyite

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KMF549121

Gaudefroyite

Classic Locality

Description Tabs

Description
Locality: 
NChwaning II Mine, Kuruman, Kalahari, Northern Cape Province, South Africa
Class: 
Crystal Group/Cluster
Size Range: 
Small cabinet (7-10 cm)
Size: 
7 × 3.5 × 3.5 cm
Description

A large cluster of lustrous well defined prismatic crystals of gaudefoyite, a rare mineral from the kalahari manganese field and rarely seen on the market today in any notable size.

The larger crystals exhibit sharp form with classic faceted terminations, the black crystals are super lustrous reflecting maximum light. The balance between the number of small and larger crystals is good.

There are attachment contacts and some bruising to this complex cluster.

Mineral Data
What's on the rock

Gaudefroyite

Formula: 
Ca4Mn3+2-3(BO3)3(CO3)(O,OH)3
Strunz: 
6.AB.60
Hardness: 
6.0
Type Locality: 
Tachgagalt Mine, Ouarzazate Province, Souss-Massa-Draâ Region, Morocco

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