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Topaz On Fluorite

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CR529979

Topaz On Fluorite

very unusual combination !

Description Tabs

Description
Locality: 
Krantzberg Mine, Omaruru, Erongo Region, Namibia
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
6.5 × 4.7 × 3.5 cm
Description

This is a very unusual combination specimen from the famous Fritz Haller collection.

Hundreds of gemmy and perfect terminated topaz crystals nicely set all around on blue-violet fluorite crystals.

With minor black tourmaline crystals.

 

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

Fluorite

Formula: 
CaF2
Strunz: 
3.AB.25
Crystal System: 
Isometric
Hardness: 
4.0
Streak: 
White
Type Locality: 
Jáchymov (St Joachimsthal), Jáchymov District (St Joachimsthal), Krušné Hory Mts (Erzgebirge), Karlovy Vary Region, Bohemia (Böhmen; Boehmen), Czech Republic