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Erythrite Pharmacolite & Skutterudite

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Erythrite Pharmacolite & Skutterudite

Description Tabs

Description
Locality: 
Aghbar Mine, Bou Azzer, Drâa-Tafilalet Region, Morocco
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.5 × 2.5 × 2.5 cm
Description

Nice pink spheres of thin needles of erythrite, accompanied by white pharmacolite. The crystals are small, but I think optically very attractive. Found by seller in december 2009.

High resolution mineral images (tiff 75 MB), for use in articles or to print A3 for your wall, will be provided as download on request.

Mineral Data
What's on the rock

Erythrite

Formula: 
Co3(AsO4)2·8H2O
Strunz: 
8.CE.40
Hardness: 
1.5 - 2.5
Type Locality: 
Daniel Mine (St. Daniel Mine), Neustädtel, Schneeberg District, Erzgebirge, Saxony, Germany

Pharmacolite

Formula: 
Ca(HAsO4)·2H2O
Strunz: 
8.CJ.50
Crystal System: 
Monoclinic
Hardness: 
2.0 - 2.5
Streak: 
White
Type Locality: 
Sophia Mine, Böckelsbach valley, Wittichen, Schenkenzell, Black Forest, Baden-Württemberg, Germany

Skutterudite

Formula: 
CoAs3-x
Strunz: 
2.EC.05
Hardness: 
5.5 - 6.0
Streak: 
Black
Type Locality: 
Skuterud Mines (Skutterud Mines; Modum Cobalt Mines), Modum, Buskerud, Norway
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