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Topaz

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CAM600951

Topaz

Classic Locality

Description Tabs

Description
Locality: 
Prokop Adit, Knöttel, Krupka, Krušné Hory, Ústí nad Labem Region, Czech Republic
Class: 
Crystals on Matrix
Size Range: 
Small cabinet (7-10 cm)
Size: 
9.5 × 6.5 × 3 cm
Largest Crystal: 
0.70cm
Description

A rich coverage of lustrous, light blue, well-formed topaz crystals up to 7 mm on matrix.
An excellent example from this locality, collected in 1977.

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
Cartils Minerals

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