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Dolomite Psm Calcite

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PDM609938

Dolomite Psm Calcite

Pseudomorph

Description Tabs

Description
Locality: 
Kipushi Mine, Haut-Katanga, DR Congo
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
4 × 3.1 × 1.1 cm
Description

A classic cast of dolomite after calcite from the Kipushi Mine. These kind of specimens where known as zincian calcite by miners and engineers at Kipushi, and afterwards by collectors. However we have analysed this kind of specimens by RAMAN and they are just dolomite, with a very thin light brown coating of iron hydroxides. These epimorphosis from Kipushi are hard to find nowadays. It was in the collection of Achiel Moors, a Belgian mineral collector who lived in Congo between 1957 and 1972.

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

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