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Goethite On Quartz

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SHS42846

Goethite On Quartz

Description Tabs

Description
Locality: 
Becker Quarry, Freisen, Sankt Wendel, Saarland, Germany
Size Range: 
Miniature (4.5-7 cm)
Size: 
6.2 × 4.7 × 2.5 cm
Description

Gray goethite needels on quartz

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

Quartz

Formula: 
SiO2
Strunz: 
4.DA.05
Crystal System: 
Trigonal
Hardness: 
7.0
Streak: 
White