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Goethite Psm Pyrite

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PCZ756537

Goethite Psm Pyrite

Description Tabs

Description
Locality: 
Blaengwynlais Quarry, Bwlch-y-cwm, Cardiff, Glamorgan, Wales, United Kingdom
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
2.5 × 2.5 × 1.5 cm
Description

An unusual and not unattractive specimen from a rarely seen British locality.

Mineral Data
What's on the rock

Goethite

Formula: 
α-Fe3+O(OH)
Strunz: 
4.00.
Crystal System: 
Orthorhombic
Hardness: 
5.0 - 5.5
Type Locality: 
Hollertszug Mine (Hollerter Zug Mine), Dermbach, Herdorf, Siegerland, Rhineland-Palatinate, Germany

Pyrite

Formula: 
FeS2
Strunz: 
2.EB.05a
Crystal System: 
Isometric
Hardness: 
6.0 - 6.5
Peter Crozier Minerals