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Roselite On Cobaltoan Calcite

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PDM664261

Roselite On Cobaltoan Calcite

Gem Crystal

Description Tabs

Description
Locality: 
Aghbar Mine, Aghbar, Zagora Province, Drâa-Tafilalet Region, Morocco
Class: 
Crystals on Matrix
Size Range: 
Small cabinet (7-10 cm)
Size: 
7.2 × 4.2 × 3.6 cm
Description

Old piece with very well defined, lustrous isolated roselite crystals of good fuchsia colour and transparency, richly disseminated on the surface of a crystallized pink cobaltoan calcite matrix.

Acquired in 1982. Ex. Dr. Bob Janssens specimen, #1634.

Mineral Data
What's on the rock

Roselite

Formula: 
Ca2(Co2+,Mg)(AsO4)2·2H2O
Strunz: 
8.CG.10
Hardness: 
3.5
Type Locality: 
Rappold Mine, Neustädtel, Schneeberg District, Erzgebirge, Saxony, Germany

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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