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Fluorite & Chalcopyrite On Calcite With Hematite Inclusions

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CLB93709

Fluorite & Chalcopyrite On Calcite With Hematite Inclusions

Classic Locality

Description Tabs

Description
Locality: 
Artenberg Quarry, Steinach, Freiburg Region, Baden-Württemberg, Germany
Size Range: 
Cabinet (10-18 cm)
Size: 
10 × 6.7 × 5.6 cm
Description

Very uncommon, highly interesting specimen. Green fluorite octahedrons and golden chalcopyrite on haematite-stained calcite. Please note the second generation fluorite crystals sitting exactly on the tips of one of the octahedrons. I've never seen something like this before. Even without those special features this is a today very rarely seen sample from Wittichen.

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

Calcite

Polymorph of: 
Formula: 
CaCO3
Strunz: 
5.AB.05
Crystal System: 
Trigonal
Hardness: 
3.0
Streak: 
White

Hematite

Formula: 
Fe2O3
Strunz: 
4.CB.05
Crystal System: 
Trigonal
Hardness: 
5.0 - 6.0

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