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Topaz With Phlogopite & Cleavelandite

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MII144579

Topaz With Phlogopite & Cleavelandite

Shigar
Classic Locality

Description Tabs

Description
Locality: 
Nyet Bruk, Braldu Valley, Skardu, Gilgit-Baltistan, Pakistan
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.5 × 3 × 1.5 cm
Largest Crystal: 
2.00cm
Description

Twinning of two large crystals of topaz, glittering and translucent in association with cleavelandite and mica - var. Phlogopite

Mineral Data
What's on the rock

Topaz

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

Phlogopite

Formula: 
KMg3(AlSi3O10)(OH,F)2
Strunz: 
9.EC.20
Crystal System: 
Monoclinic - Prismatic
Hardness: 
2.0 - 3.0
Streak: 
White

Cleavelandite

Variety Of: 

Albite

Formula: 
NaAlSi3O8
Strunz: 
9.FA.35
Hardness: 
6.0 - 6.5
Hardness: 
0.0
MineralsIsland

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