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Tourmaline In Topaz

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PJM106253

Tourmaline In Topaz

Description Tabs

Description
Locality: 
Shengus, Haramosh Mountains, Skardu District, Gilgit-Baltistan, Pakistan
Size Range: 
Thumbnail (1-3cm)
Size: 
2.6 × 1.4 × 1.2 cm
Description

A single dark green to black tourmaline crystal id included through the centre of this sherry coloured topaz crystal. The Topaz crystal has a flat basal termination with an interesting bubbly finish and beveled edges. The opposite end of the crystal has a partial termination where the topaz was removed or fractured from its matrix.

Mineral Data
What's on the rock

Tourmaline

Formula: 
A(D3)G6(T6O18)(BO3)3X3Z
Crystal System: 
Trigonal
Hardness: 
7

Topaz

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

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