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Goethite

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MGR658473

Goethite

Description Tabs

Description
Locality: 
Tharsis, Huelva, Andalusia, Spain
Class: 
Crystal Group/Cluster
Size Range: 
Miniature (4.5-7 cm)
Size: 
4.9 × 3.4 × 2.2 cm
Description

A cluster of very glossy, very colorful spheres of goethite. A full rainbow spectrum of iridescence is covering lovely botryoidal goethites. Although the locality is well known for colorful goethite - this one stands out the crowd, the spectrum of colors and also the diameter of the spheres is remarkable. No signficant damages to report.

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