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Erythrite & Skutterudite

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RSL779602

Erythrite & Skutterudite

Classic Locality

Description Tabs

Description
Locality: 
Bou Azzer Mine, Amerzgane, Ouarzazate Province, Drâa-Tafilalet Region, Morocco
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
6.3 × 4.5 × 3.8 cm
Description

Radial aggregates of brilliant erythrite crystals, with a deep colour and disposed in a vug of the Co-As sulphides matrix. Under loupe are really amazing. From the former Joan Astor collection (Barcelona), well known Catalan mineralogist and photographer.

Acquired: 
1976
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

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