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Fluorite & Quartz

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MGR155912

Fluorite & Quartz

Description Tabs

Description
Locality: 
Bergsig Farm 167, Omaruru, Erongo Region, Namibia
Size Range: 
Small cabinet (7-10 cm)
Size: 
7.7 × 4 × 3.3 cm
Description

Fluorit up to 22mm on edges. The quartz crystals shows a light smoky colour, it is sharp terminated and glossy. The fluorite crystals are nearly colourless with green internal zones. This material is from the same occurrence as the alien-eye fluorites, only the phantoms are not so sharp. Usually fluorites from this locality develop on quartz but remove from quartz during their genesis. So this specimen with fluorite still on quartz is remarkable and rare. The quartz was contacted backside. The smaller fluorite crystals shows a crystallized contact on one side. No significant damages.

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

Quartz

Formula: 
SiO2
Strunz: 
4.DA.05
Crystal System: 
Trigonal
Hardness: 
7.0
Streak: 
White