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Fluorite & Eisenkiesel

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NST631179

Fluorite & Eisenkiesel

Classic Locality

Description Tabs

Description
Locality: 
Wölsendorf, Upper Palatinate, Bavaria, Germany
Class: 
Crystals on Matrix
Size Range: 
Cabinet (10-18 cm)
Size: 
11 × 9 × 4 cm
Description

Large cubes of green fluorite partly covered by red quartz crystals var. eisenkiesel. The fluorites also show a reddish-brownish color component caused by tiny inclusions of iron oxides and sulfides and a violet component caused by structural defects due to natural radiation.

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

Eisenkiesel

Variety Of: 

Quartz

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