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Goethite On Smoky Quartz

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CLB149953

Goethite On Smoky Quartz

ex collection Aidara/Hühne
Classic Locality

Description Tabs

Description
Locality: 
Becker Quarry, Freisen, Sankt Wendel, Saarland, Germany
Class: 
Combination
Size Range: 
Small cabinet (7-10 cm)
Size: 
7.9 × 5.2 × 3.2 cm
Description

Very interesting and unusual specimen. Acicular goethite crystals ('nadeleisenerz' = 'needle iron ore') on smoky quartz/eisenkiesel. The goethite needles are sprinkled with a new generation of micro quartz crystals. Rare.

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

Smoky Quartz

Variety Of: 

Quartz

Formula: 
SiO2
Strunz: 
4.DA.05
Hardness: 
7.0
Formula: 
SiO2
Hardness: 
0.0

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