Moving mountains for you
Switch currency

Current Live Auctions

Current Live Fixed Price Sales

Sturmanite

Views:
Watches:
ESM931046

Sturmanite

Description Tabs

Description
Locality: 
NChwaning II Mine, Kuruman, Kalahari, Northern Cape Province, South Africa
Class: 
Single Crystal
Size Range: 
Thumbnail (1-3cm)
Size: 
1.6 × 0.5 × 0.5 cm
Description

A single terminated yellow-brownish sturmanite crystal

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