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Proustite & Skutterudite

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MNR633409

Proustite & Skutterudite

ex. Rudolf Ďuďa collection

Description Tabs

Description
Locality: 
Jáchymov, Krušné Hory, Karlovy Vary Region, Czech Republic
Class: 
Massive/Crystalline
Size Range: 
Miniature (4.5-7 cm)
Size: 
5.5 × 4 × 2.2 cm
Description

You're bidding on this wonderful old time proustite from the type and classic locality! There are multiple dark red crystals with nice terminations in grey skutterudite.

Ex. Rudolf Ďuďa collection 2/132

Mineral Data
What's on the rock

Proustite

Formula: 
Ag3AsS3
Strunz: 
2.GA.05
Crystal System: 
Trigonal
Hardness: 
2.0 - 2.5

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