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Sturmanite

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MGR1053803

Description Tabs

Description
Locality: 
NChwaning Mines, Kuruman, Northern Cape Province, South Africa
Class: 
Crystal Group/Cluster
Size Range: 
Thumbnail (1-3cm)
Size: 
2.6 × 2.5 × 1.4 cm
Description

Fantastic cluster of intergrown crystals of rare sturmanite from South Africa. They show a fine lustre and an intense golden to orange colouration. Also the shape of the piece is highly esthetic.

Mineral Data
What's on the rock

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

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10
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Start 15 Jun 18:00
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Shipping Information

Postage Area Price
Austria 5
5
Europe 14
16
North America 16
19
Rest of World 19
22

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