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Dolomite Psm Calcite With Hematite

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CLB144099

Dolomite Psm Calcite With Hematite

ex coll. Wittig, ex coll. Hühne
Pseudomorph

Description Tabs

Description
Locality: 
Stromberg Quarry, Stromberg, Hunsrück, Rhineland-Palatinate, Germany
Size Range: 
Cabinet (10-18 cm)
Size: 
12.8 × 9 × 8.7 cm
Largest Crystal: 
12.80cm
Description

Giant group of calcite scalenohedrons, partly replaced by dolomite and covered with a sheet of haematite as kidney ore. This material was mostly broken out of calcite-dolomite matrix, so unbroken crystal tips are almost impossible to find. The large crystal has a broken, but healed tip. Please note the size of this scalenohedron.

Mineral Data
What's on the rock

Dolomite

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

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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