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Fluorite On Smoky Quartz

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BSM582559

Fluorite On Smoky Quartz

ex Prof George Walker Collection #604

Description Tabs

Description
Locality: 
Kara Oba, Karaganda Oblast, Kazakhstan
Class: 
Combination
Size Range: 
Miniature (4.5-7 cm)
Size: 
5.8 × 3.8 × 3.2 cm
Description

Very deep purple cubic and modified cubic crystals densely cover one side of a large smoky quartz crystal. the quartz crystal itself is of interest as it appears the base is self-healed and the fluorite was deposited at a later date.The crystal itself is rather variegatedin term of its colour. The larger fluorite crystals show some colour banding.

The specimen was purchased by Prof. Walker in 1961 but no locational details are given. Kara Oba is a likely location.

Previous labels supplied (not photographed)
Mineral Data
What's on the rock

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

Smoky Quartz

Variety Of: 

Quartz

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

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