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Olmiite

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CFL672868

Olmiite

Type Locality

Description Tabs

Description
Locality: 
NChwaning Mines, Kuruman, Northern Cape Province, South Africa
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
2.1 × 1.7 × 1.2 cm
Weight: 
20.00gr
Description

Nice type locality specimen of two nodular spherical beige groups of tabular olmiite crystals, up to 6 mm in size, on matrix.

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...

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