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Ankerite & Dolomite With Hematite

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CLB65453

Ankerite & Dolomite With Hematite

Description Tabs

Description
Locality: 
Basalt Quarry, Langenthal, Bad Kreuznach, Rhineland-Palatinate, Germany
Size Range: 
Cabinet (10-18 cm)
Size: 
15.2 × 7.9 × 5 cm
Description

Large specimen with a couple of ankerite vugs in melaphyr. The ankerite crystals are spotted by haematite crystals and -inclusions. Some material was analyzed, however there is also dolomite and very often greenish ankerite covered with dolomite which seems to be the case here. Langenthal's mineralization is a little uncommon for the area.

Mineral Data
What's on the rock

Ankerite

Formula: 
Ca(Fe2+,Mg)(CO3)2
Strunz: 
5.AB.10
Crystal System: 
Trigonal
Hardness: 
3.5 - 4.0
Streak: 
White
Type Locality: 
Styrian Erzberg, Eisenerz, Styria, Austria

Dolomite

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

Hematite

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

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