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Cobaltoan Dolomite

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PDM579469

Cobaltoan Dolomite

Gem Crystal

Description Tabs

Description
Locality: 
Kakanda, Lubudi, Lualaba, DR Congo
Class: 
Crystals on Matrix
Size Range: 
Small cabinet (7-10 cm)
Size: 
8.8 × 6.8 × 3.2 cm
Largest Crystal: 
0.80cm
Description

Sharp modified rhombohedral crystals of dolomite, variety cobaltoan, where the external layers present a light pink colour in the smaller crystals, varying to a fuchsia where they grew thicker. Crystal development is very good and they are extremely bright and transparent. A group of prismatic to acicular malachite crystals to 8mm is located just in the middle, adding contrast to the specimen.

Ex. Lucien Jusgen collection, who bought it on September 9, 1989 at the Brussels Mineral Show.

Mineral Data
What's on the rock

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

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