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Goethite Psm Marcasite

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MGR842052

Goethite Psm Marcasite

Floater

Description Tabs

Description
Locality: 
Farafra Oasis, New Valley, Egypt
Class: 
Crystal Group/Cluster
Size Range: 
Thumbnail (1-3cm)
Size: 
2.5 × 2.2 × 1.9 cm
Description

Very interesting shaped specimen. Four steped Marcasite after Goethite crystals grown togehther to a well formed cluster which reminds of a cross.

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