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Sturmanite

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MGR1158432

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 × 3.4 × 1.6 cm
Description

This is an amazing group of highly lustrous, honey-colored Sturmannite crystals set in the center of the light matrix. Great contrast, exceptional quality for the mineral and the locality.

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 27 Dec 18:00
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Shipping Information

Postage Area Price
Austria 5
5
Europe 17
17
North America 25
25
Rest of World 22
22

Bid History

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