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Malachite Psm Azurite On Cobaltoan Dolomite

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PDM832273

Malachite Psm Azurite On Cobaltoan Dolomite

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Description
Locality: 
Kimpese, Molwe, Shinkolobwe, Haut-Katanga, DR Congo
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
4.8 × 4.5 × 2.9 cm
Description

From a recent find (2019) near Kimpese, in the Tantara area, these are interpenetrated clusters of flattened pseudo-rhombohedral azurite crystals that are totally replaced by lustrous fibrous malachite. The rosettes are very aerial and elegant, exposed all around, and completely free of damages. Furthermore the group forms an attractive contrast on a matrix covered by pink-coloured lustrous cobaltoan dolomite. Far better on the hand, it is mounted on an acrylic socle.

Mineral Data
What's on the rock

Malachite

Formula: 
Cu2(CO3)(OH)2
Strunz: 
5.BA.10
Crystal System: 
Monoclinic
Hardness: 
3.5 - 4.0

Azurite

Formula: 
Cu3(CO3)2(OH)2
Strunz: 
5.BA.05
Crystal System: 
Monoclinic
Hardness: 
3.5 - 4.0
Type Locality: 
Chessy copper mines, Chessy-les-Mines, Le Bois d'Oingt, Rhône, Rhône-Alpes, France...

Cobaltoan Dolomite

Variety Of: 

Dolomite

Formula: 
CaMg(CO3)2
Strunz: 
5.AB.10
Hardness: 
3.5 - 4.0
Formula: 
(Ca,Mg,Co)CO3
Hardness: 
0.0
Not Sold

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