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Andradite & Prehnite

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CLB171501

Andradite & Prehnite

New Discovery

Description Tabs

Description
Locality: 
Angola Diggings, Sibindi, Diakon, Kayes Region, Mali
Size Range: 
Small cabinet (7-10 cm)
Size: 
8 × 6 × 4.3 cm
Description

Last year's new find of a spectacular combo of dark brown andradite crystals with pale green prehnite crystals. This is one of only a few specimen of this kind found so far. Has a few dings but still looks fine.

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

Prehnite

Formula: 
Ca2Al2Si3O10(OH)2
Strunz: 
9.DP.20
Hardness: 
6.0 - 6.5
Streak: 
White
Type Locality: 
Karoo dolerites, Cradock, Chris Hani District, Eastern Cape Province, South Africa

Seller Information

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