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Cobaltoan Calcite

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PDM791865

Cobaltoan Calcite

Description Tabs

Description
Locality: 
Kambove, Haut-Katanga, DR Congo
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
4.3 × 2.8 × 2.3 cm
Description

Sharp modified scalenohedral crystals of calcite, variety cobaltoan, where the thick external layer presents a superb fuchsia colour. Crystal development is very good and they are extremely bright. The piece represent a good example of this type of material from Kambove where the crystals that cover richly a double cavity are surrounded at the contact with matrix by a net black line composed of carrolite crystals altered to black bornite.

Collected at the Kambove Mine by René Virlet, a Belgian colonist in Congo who travel back definitively to Belgium in 1968.

Mineral Data
What's on the rock

Cobaltoan Calcite

Variety Of: 

Calcite

Formula: 
CaCO3
Strunz: 
5.AB.05
Hardness: 
3.0
Formula: 
(Ca,Co)CO3
Hardness: 
0.0

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