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Fluorite Marcasite & Chalcopyrite

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NST647407

Fluorite Marcasite & Chalcopyrite

Classic Locality

Description Tabs

Description
Locality: 
Wölsendorf, Upper Palatinate, Bavaria, Germany
Class: 
Crystal Group/Cluster
Size Range: 
Small cabinet (7-10 cm)
Size: 
7.5 × 7.5 × 3.5 cm
Largest Crystal: 
2.80cm
Description

Green color-zoned crystals of fluorite with chalcopyrite and marcasite. The fluorites show a reddish-brownish color-zoning caused by tiny inclusions of iron oxides and sulfides and a violet component caused by structural defects due to natural radiation. The colors are even brighter when backlit. Beautiful display specimen.

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

Marcasite

Formula: 
FeS2
Strunz: 
2.EB.10a
Crystal System: 
Orthorhombic
Hardness: 
6.0 - 6.5

Chalcopyrite

Formula: 
CuFeS2
Strunz: 
2.CB.10a
Crystal System: 
Tetragonal
Hardness: 
3.5 - 4.0