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Erythrite

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MCH507057

Erythrite

Classic Locality

Description Tabs

Description
Locality: 
Vikersund, Modum, Viken, Norway
Class: 
Combination
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.9 × 3.7 × 2.1 cm
Description

Purple coloured erythrite as an alteration product on fine grained, silvery/grey coloured primary Co-minerals (skutterudite?, cobaltite?) as well as on phlogopite and some muscovite from the old Skutterud cobalt mines at Modum. Comes with an old German label.

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

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