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Andradite On Hausmannite

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Andradite On Hausmannite

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Description
Locality: 
NChwaning II Mine, Kuruman, Kalahari, Northern Cape Province, South Africa
Class: 
Crystal Group/Cluster
Size Range: 
Miniature (4.5-7 cm)
Size: 
3.9 × 5.1 × 2.4 cm
Weight: 
39.95gr
Description

Calcite on Andradite on Hausmannite. Hausmannite crystals in the pyramidal pagoda type cluster growth habit are partly covered by calcite. The andradite is laid down in a well formed interconnected aggregate spread of small orange to burnt sienna coloured crystals. Some of the hausmannite have contacted areas.

Mineral Data
What's on the rock

Andradite

Formula: 
Ca3Fe3+2(SiO4)3
Strunz: 
9.AD.25
Crystal System: 
Isometric
Hardness: 
6.5 - 7.0
Streak: 
White
Type Locality: 
Drammen, Buskerud, Norway

Hausmannite

Formula: 
Mn2+Mn3+2O4
Strunz: 
4.BB.10
Hardness: 
5.5
Type Locality: 
Oehrenstock (Öhrenstock), Langewiesen, Ilmenau District, Thuringian Forest, Thuringia, Germany

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