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Goethite

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PDM1006694

Goethite

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Description
Locality: 
Timna Valley, Eilat, Southern District, Israel
Class: 
Crystal Group/Cluster
Size Range: 
Miniature (4.5-7 cm)
Size: 
6.1 × 3.6 × 2.2 cm
Weight: 
70.00gr
Description

A pair of iron concretions that jointed together while the goethite crystals grew interpenetrated due to capillary movement of iron at the surface of the Nubian sandstone, cementing also some grains of white quartz. Collected by Dr. E. Kirchner in 1988 during a collecting trip. Rare locality in collections.

Ex Dr. Elisabeth Kirchner (1935-2023) collection.

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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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