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Goethite & Hematite

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SCH55720

Goethite & Hematite

Description Tabs

Description
Locality: 
Tordelrábano, Guadalajara, Castilla La Mancha, Spain
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.6 × 2.6 × 1.9 cm
Description

A specimen of goethite acicular crystals up to 1cm in length forming groups from one Triassic sediments cavity. 

Deep red, almost black haematite rosettes forming balls are sprinkled along the geode.

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

Hematite

Formula: 
Fe2O3
Strunz: 
4.CB.05
Crystal System: 
Trigonal
Hardness: 
5.0 - 6.0
schani

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