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Goethite Psm Marcasite & Pyrite

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RBR616689

Goethite Psm Marcasite & Pyrite

Description Tabs

Description
Locality: 
Farafra Oasis, New Valley, Egypt
Class: 
Crystal Group/Cluster
Size Range: 
Cabinet (10-18 cm)
Size: 
14 × 2 × 2 cm
Description

This kind of pseudomorph from the white desert are extremly rare. First of all it shows a phenomenal site of 14 cm! It consists of a stretched formation of marcasite with beautiful cubes of pyrite at the sides. Both minerals were replaced by goethite, while the structure is still original. The item is completly free of damage.

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

Marcasite

Formula: 
FeS2
Strunz: 
2.EB.10a
Crystal System: 
Orthorhombic
Hardness: 
6.0 - 6.5

Pyrite

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

Seller Information

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