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Spherocobaltite & Colbaltoan Picropharmacolite

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FDW65356

Spherocobaltite & Colbaltoan Picropharmacolite

Rare Mineral

Description Tabs

Description
Locality: 
Oumlil Mine, Oumlil, Zagora Province, Drâa-Tafilalet Region, Morocco
Size Range: 
Thumbnail (1-3cm)
Size: 
2.4 × 1.3 × 1.7 cm
Description

This specimen carries ca.20 micro crystals (0,3-0,4 mm). That sounds extremely small, but 90% of the real spherocobaltite does not get bigger than this.  Most of the crystals are transparent and are on a black (heterogenite) matrix, what gives the crystals a contrast.

Found in Oumlil in April 2008

(the zone with spherocobaltite is 12x5 mm) (BA )

Mineral Data
What's on the rock

Spherocobaltite

Formula: 
CoCO3
Strunz: 
5.AB.05
Hardness: 
3.0 - 4.0
Type Locality: 
Daniel Mine (St. Daniel Mine), Neustädtel, Schneeberg District, Erzgebirge, Saxony, Germany

Colbaltoan Picropharmacolite

Variety Of: 

Picropharmacolite

Formula: 
Ca4Mg(AsO4)2(HAsO4)2·11H2O
Strunz: 
8.CH.15
Hardness: 
1.0 - 2.0
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