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Calcite On Dolomite Psm Calcite

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CLB82615

Calcite On Dolomite Psm Calcite

found by Burkhard Henn
Pseudomorph

Description Tabs

Description
Locality: 
Hellberg Quarry, Kirn, Hunsrück, Rhineland-Palatinate, Germany
Size Range: 
Cabinet (10-18 cm)
Size: 
11.1 × 11.4 × 5 cm
Largest Crystal: 
7.00cm
Description

A very rare pseudomorph. Dolomite has replaced two large calcite scalenohedrons of 7 cm (barely recognizable) and 4 cm (the nice one in the middle) and then has been covered by a second generation of calcite crystals of a different crystal form. Those have chalcopyrite inclusions.

Mineral Data
What's on the rock

Calcite

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

Dolomite

Formula: 
CaMg(CO3)2
Strunz: 
5.AB.10
Crystal System: 
Trigonal - Rhombohedral
Hardness: 
3.5 - 4.0
Streak: 
White

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