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Topaz On Smoky Quartz

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CLB64038

Topaz On Smoky Quartz

coll. Anton Berger, Vienna, Austria
Classic Locality

Description Tabs

Description
Locality: 
Klein Spitzkopje, Karibib, Erongo Region, Namibia
Size Range: 
Small cabinet (7-10 cm)
Size: 
8.7 × 6.6 × 3.4 cm
Largest Crystal: 
2.00cm
Description

Very nice matrix specimen of the so-called silver topaz from the Klein Spitzkopje (Kleine Spitzkoppe).

Due to the hard pegmatite and good cleavage of the topaz, matrix specimens are very rare and almost impossible to find nowadays.

The specimen must be from the fifties or sixties.

A major crystal is a little damaged but the others are fine.

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

Smoky Quartz

Variety Of: 

Quartz

Formula: 
SiO2
Strunz: 
4.DA.05
Hardness: 
7.0
Formula: 
SiO2
Hardness: 
0.0

Seller Information

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