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Olmiite

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MGR720509

Olmiite

Description Tabs

Description
Locality: 
NChwaning II Mine, Kuruman, Kalahari, Northern Cape Province, South Africa
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
4.3 × 2.9 × 2.6 cm
Description

This piece features a ball shaped aggregate of salmon coloured olmiite crystals on a dark brown manganese ore. The crystal cluster is 2.3 cm wide and absolutely free of damage. Ex John Schneider collection.

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...