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Henritermierite & Sturmanite

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JYJ863212

Henritermierite & Sturmanite

SEM-EDS confirmed no 1084

Description Tabs

Description
Locality: 
NChwaning Mines, Kuruman, Northern Cape Province, South Africa
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
2.4 × 1.7 × 1.4 cm
Description

Orange-red tiny henritermierite with large glassy yellow sturmanite crystals on matrix. 

SEM-EDS confirmed specimen. Specimen comes with a colour printed analytical report. 

 

Mineral Data
What's on the rock

Henritermierite

Formula: 
Ca3(Mn3+,Al)2(SiO4)2(OH)4
Strunz: 
9.AD.25
Hardness: 
0.0
Streak: 
White
Type Locality: 
Tachgagalt Mine, Ouarzazate Province, Souss-Massa-Draâ Region, Morocco

Sturmanite

Formula: 
Ca6(Fe3+,Al,Mn3+)2(SO4)2[B(OH)4](OH)12·25H2O
Strunz: 
7.DG.15
Crystal System: 
Trigonal
Hardness: 
2.5
Type Locality: 
Black Rock Mine, Black Rock, Kalahari manganese field, Northern Cape Province, South Africa