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Fluorite With Chalcopyrite

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BMM873469

Fluorite With Chalcopyrite

Description Tabs

Description
Locality: 
Bergmännisch Glück Mine, Frohnau, Annaberg-Buchholz, Erzgebirge, Saxony, Germany
Class: 
Crystal Group/Cluster
Size Range: 
Small miniature (3-4.5 cm)
Size: 
4.2 × 3.6 × 3 cm
Description

A perfect specimen of amber-yellow fluorite crystals up to 1.8 cm edge length ! The sharp terminated crystals are showing purple to blue zonings. As seen in the picture, there are some golden chalcopyrite crystals grown on the fluorites, which make this piece even more attractive. And there are intergrown chalcopyrite inside of the fluorites too. The surfaces are high gloss and display a fine square texture. The location “Bergmännisch Glück” is famous for special kinds of fluorites. Really a charming piece!

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

Chalcopyrite

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