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Elbaite With Muscovite & Topaz

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FNW36520

Elbaite With Muscovite & Topaz

Description Tabs

Description
Locality: 
Stak Nala, Gilgit-Baltistan, Pakistan
Size Range: 
Thumbnail (1-3cm)
Size: 
2.8 × 2.9 × 2.6 cm
Largest Crystal: 
2.10cm
Description

Very nice, terminated and complex elbaite crystals on matrix with albite and muscovite.

In addition you can see a litlle well-formed clear topaz crystal. .

Mineral Data
What's on the rock

Elbaite

Formula: 
Na(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
Strunz: 
9.CK.05
Hardness: 
7.5
Streak: 
White
Type Locality: 
Fonte del Prete, San Piero in Campo, Campo nell'Elba, Elba Island, Livorno Province, Tuscany, Italy...

Muscovite

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

Topaz

Formula: 
Al2(SiO4)(F,OH)2
Strunz: 
9.AF.35
Crystal System: 
Orthorhombic - Dipyramidal
Hardness: 
8.0
Streak: 
White
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