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Goethite Var Goethite & Chabazite

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CLB134495

Goethite Var Goethite & Chabazite

Classic Locality

Description Tabs

Description
Locality: 
Becker Quarry, Freisen, Sankt Wendel, Saarland, Germany
Size Range: 
Cabinet (10-18 cm)
Size: 
14 × 11.3 × 5 cm
Description

A real classic: fantastic 'sea-urchins' of acicular goethite crystals with white chabazite crystals, looking like they were spiked on the goethite needles (called 'nadeleisenerz' = 'needle-iron-ore' in Germany). All on a piece of a pale smoky quartz crystal druse. Good pieces like this are very rare and sought after.

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

Chabazite

Synonym Of: 

Chabazite-Ca

Formula: 
(Ca,K2,Na2)2[Al2Si4O12]2·12H2O
Strunz: 
9.GD.10
Hardness: 
4.0 - 5.0

Chabazite-K

Formula: 
(K2,Ca,Na2,Sr,Mg)2[Al2Si4O12]2·12H2O
Strunz: 
9.GD.10
Hardness: 
4.0

Chabazite-Mg

Formula: 
(Mg0.7K0.5Ca0.5Na0.1)[Al3Si9O24]·10H2O
Strunz: 
9.GD.10
Hardness: 
4.0 - 0.0

Chabazite-Na

Formula: 
(Na2,K2,Ca,Sr,Mg)2[Al2Si4O12]2·12H2O
Strunz: 
9.GD.10
Hardness: 
4.0

Chabazite-Sr

Formula: 
Sr2[Al2Si4O12]2·12H2O
Strunz: 
9.GD.10
Hardness: 
4.0 - 4.5

Seller Information

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