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Topaz Tourmaline & Ilmenorutile

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CLB181091

Topaz Tourmaline & Ilmenorutile

Classic Locality

Description Tabs

Description
Locality: 
Schneckenstein, Kielberg, Klingenthal, Vogtland, Saxony, Germany
Size Range: 
Small cabinet (7-10 cm)
Size: 
7.4 × 5 × 3.8 cm
Description

Not the most beautiful of Schneckenstein topaz specimen, but with about 12 topaz crystals, very nicely developed ilmenorutile (black micro-crystals) and, as far as I can see, dark green tourmaline and crusts of beige-brown crandallite.

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

Tourmaline

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

Ilmenorutile

Variety Of: 

Rutile

Formula: 
TiO2
Strunz: 
4.DB.05
Hardness: 
6.0 - 6.5
Formula: 
Fex(Nb,Ta)2x·4Ti1-xO2
Crystal System: 
Tetragonal
Hardness: 
6.0 - 6.5
Colour: 
Black
Type Locality: 
Vein No. 140 (Selyankino village), Buldym Lake, Vishnevye Mts (Vishnyovye; Cherry), Chelyabinsk Oblast', Southern Urals, Urals Region, Russia...

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