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Olmiite Calcite & Baryte

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RAF748338

Olmiite Calcite & Baryte

Rare Mineral

Description Tabs

Description
Locality: 
NChwaning II Mine, Kuruman, Kalahari, Northern Cape Province, South Africa
Class: 
Combination
Size Range: 
Small cabinet (7-10 cm)
Size: 
9 × 6.7 × 4 cm
Largest Crystal: 
2.20cm
Weight: 
206.00gr
Description

Fabulous Olmiite, Calcite & Baryte crystals on matrix from N'Chwaning II Mine, Northern Cape. This is a very Rare combination to find. and only came out once.

Mineral Data
What's on the rock

Olmiite

Formula: 
CaMn2+[SiO3(OH)](OH)
Strunz: 
9.AF.90
Hardness: 
5.0 - 5.5
Streak: 
White
Type Locality: 
N'Chwaning II Mine, N'Chwaning Mines, Kuruman, Kalahari manganese field, Northern Cape Province, South Africa...

Calcite

Polymorph of: 
Formula: 
CaCO3
Strunz: 
5.AB.05
Crystal System: 
Trigonal
Hardness: 
3.0
Streak: 
White

Baryte

Formula: 
BaSO4
Strunz: 
7.AD.35
Hardness: 
3.0 - 3.5
Streak: 
White