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Goethite

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RHT694389

Goethite

Classic Locality

Description Tabs

Description
Locality: 
Lautenthal, Harz Mountains, Lower Saxony, Germany
Class: 
Massive/Crystalline
Size Range: 
Small cabinet (7-10 cm)
Size: 
8 × 5.6 × 4.9 cm
Weight: 
304.00gr
Description

Stalactiotic goethite - 'brauner glaskopf' - from the Harz mountains. This would be pretty common material if not for the very beautiful iridescent part (one of the two main views). The iridescent colors are really exceptional for that locality and can almost compare to specimens from Tharsis/Spain.

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

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