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Goethite

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BMM752310

Goethite

Description Tabs

Description
Locality: 
Filón Sur, Tharsis, Huelva, Andalusia, Spain
Class: 
Massive/Crystalline
Size Range: 
Small cabinet (7-10 cm)
Size: 
7.5 × 6 × 3.3 cm
Description

A plate of botryoidal aggregate with intense, metallic-iridescent patinas, very bright and showing strongly contrasting coloration. With intense yellow, green, red and blue shades. The goethite, which is characterized by its fantastic color – much better in person!

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