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Olmiite & Bultfonteinite

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CFL969209

Olmiite & Bultfonteinite

Fluorescent

Description Tabs

Description
Locality: 
NChwaning III Mine, Kuruman, Kalahari, Northern Cape Province, South Africa
Class: 
Crystals on Matrix
Size Range: 
Museum (18cm plus)
Size: 
18 × 12 × 5.5 cm
Description

Superb and rich type locality specimen of olmiite crystals associated with fluorescent fibrous bultfonteinite crystals. The front side of the specimen is literally covered with crystals.  Purchased in 2020.  Ex-Paul Lortie 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...

Bultfonteinite

Formula: 
Ca2(HSiO4)F·H2O
Strunz: 
9.AG.80
Hardness: 
4.5
Streak: 
white
Type Locality: 
Bultfontein, Lejweleputswa District, Free State Province, South Africa

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