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Hematite On Gaudefroyite

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SMS1040896

Hematite On Gaudefroyite

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Description
Locality: 
NChwaning II Mine, Kuruman, Kalahari, Northern Cape Province, South Africa
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
1.2 × 2.1 × 1.5 cm
Largest Crystal: 
1.00cm
Weight: 
4.06gr
Description

This little specimen is made up out of hematite on gaudefroyite. Small elongate prismatic crystals of gaudefroyite to 2mm and 3mm make up a bed of crystals, like pick-up sticks. Basically black material also has some crystals showing a bit of amber translucency. The largest hematite to 1cm and 0.5cm and beautifully explicit.

Mineral Data
What's on the rock

Hematite

Formula: 
Fe2O3
Strunz: 
4.CB.05
Crystal System: 
Trigonal
Hardness: 
5.0 - 6.0

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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