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Beryl Var Vorobyevite With Muscovite & Pyrite

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KRM178269

Beryl Var Vorobyevite With Muscovite & Pyrite

Description Tabs

Description
Locality: 
Deo Darrah, Khash & Keran Wa Munjan, Badakhshan Province, Afghanistan
Size Range: 
Thumbnail (1-3cm)
Size: 
2.2 × 2.7 × 1.4 cm
Description

 A superb nice combination specimen of new  finds cesium-rich beryl variety Vorobyevite (Rosterite) , mica & pyrite.

This specimen is more attractive in person.

Mineral Data
What's on the rock

Beryl

Formula: 
Be3Al2(Si6O18)
Strunz: 
9.CJ.05
Crystal System: 
Hexagonal
Hardness: 
7.5 - 8.0
Streak: 
White

Vorobyevite

Variety Of: 

Beryl

Formula: 
Be3Al2(Si6O18)
Strunz: 
9.CJ.05
Hardness: 
7.5 - 8.0
Hardness: 
0.0

Muscovite

Formula: 
KAl2(AlSi3O10)(OH)2
Strunz: 
9.EC.15
Hardness: 
2.5
Streak: 
White

Pyrite

Formula: 
FeS2
Strunz: 
2.EB.05a
Crystal System: 
Isometric
Hardness: 
6.0 - 6.5

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