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Cobaltoan Dolomite

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PDM923607

Cobaltoan Dolomite

Description Tabs

Description
Locality: 
Aghbar Mine, Aghbar, Zagora Province, Drâa-Tafilalet Region, Morocco
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
5 × 3.3 × 2.5 cm
Weight: 
37.00gr
Description

Sharp rhombohedral crystals of dolomite colourer light pink at the external layer due to cobalt. The groups are richly distributed at both sides of a diorite matrix, that has nice white quartz crystals, so it can be exposed all around. No significant damages, there are also black micro spheres of sulphides, coated by a dull black layer, probably heterogenite. Cobalt-bearing dolomite are frequent at the Aghbar mine, but are usually mislabelled as Cobalt-bearing calcite.

Collected in 09/2009 by Dr I.Blanco.

Combine specimens to reduce shipping costs!.

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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