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Skutterudite With Erythrite

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QRI914430

Skutterudite With Erythrite

Ex coll. Burger (CH)
Classic Locality

Description Tabs

Description
Locality: 
Bieber, Biebergemünd, Main-Kinzig, Darmstadt, Hesse, Germany
Class: 
Crystal Group/Cluster
Size Range: 
Miniature (4.5-7 cm)
Size: 
6.6 × 5.8 × 4.1 cm
Weight: 
257.00gr
Description

Solid matrix specimen featuring dendritic-shaped metallic skutterudite, with locally some pink crystalline erythrite.

Contrastful and in good conditions, those old specimens are usually spotted in old collections, as this one which comes from the former Swiss collection Burger, dated pre-1950s and relabelled in modern times.

Pasted Label
Mineral Data
What's on the rock

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

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

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