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β-Roselite On Cobaltoan Calcite

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PCZ687259

β-Roselite On Cobaltoan Calcite

Description Tabs

Description
Locality: 
Aghbar Mine, Aghbar, Zagora Province, Drâa-Tafilalet Region, Morocco
Class: 
Crystals on Matrix
Size Range: 
Cabinet (10-18 cm)
Size: 
10 × 4.7 × 3.7 cm
Description

A super specimen from Morocco of beta-roselite crystals in rounded aggregates. A wonderful deep colour on delicate pink coloured cobaltoan calcite crystals. Great contrast.

Mineral Data
What's on the rock

β-Roselite

Formula: 
Ca2(Co2+,Mg)(AsO4)2·2H2O
Crystal System: 
Triclinic
Hardness: 
3.5 - 4.0
Streak: 
Red, pale
Type Locality: 
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
Peter Crozier Minerals