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Fluorite Opal-AN Muscovite & Quartz

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CLB517828

Fluorite Opal-AN Muscovite & Quartz

Fluorescent

Description Tabs

Description
Locality: 
Davib Ost Farm 61, Karibib, Erongo Region, Namibia
Class: 
Combination
Size Range: 
Cabinet (10-18 cm)
Size: 
10 × 7 × 5 cm
Description

Beautiful and rare paragenesis with multicolored green-yellow-purple fluorite crystals (some very nice phantoms included) on colorless to white, plain muscovite with some minor, snow-white opal-an (=hyalite - fluorescent under UV-light!) and a slightly 'smoky' quartz crystal.

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

Opal-AN

Variety Of: 

Opal

Formula: 
SiO2·nH2O
Strunz: 
4.DA.10
Hardness: 
5.5 - 6.5
Formula: 
SiO2·nH2O
Hardness: 
5.5 - 6.5
Streak: 
white

Muscovite

Formula: 
KAl2(AlSi3O10)(OH)2
Strunz: 
9.EC.15
Hardness: 
2.5
Streak: 
White

Quartz

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

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