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Olmiite & Calcite

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RAF559767

Olmiite & Calcite

Fluorescent

Description Tabs

Description
Locality: 
NChwaning II Mine, Kuruman, Kalahari, Northern Cape Province, South Africa
Class: 
Combination
Size Range: 
Small cabinet (7-10 cm)
Size: 
5 × 6.5 × 7.5 cm
Largest Crystal: 
3.00cm
Weight: 
214.00gr
Description

Gorgeous Olmiite & Calcite specimen from N'Chwaning II Mine, K.M.F., Northern Cape, South Africa...

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