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Goethite & Chalcedony

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PDM675854

Goethite & Chalcedony

New Mineral type

Description Tabs

Description
Locality: 
Callenberg North Open Cut #2, Callenberg, Glauchau, Zwickau, Saxony, Germany
Class: 
Massive/Crystalline
Size Range: 
Small cabinet (7-10 cm)
Size: 
8 × 7.6 × 3.5 cm
Description

Bubbly chalcedony partially replaced by black goethite, on matrix. With three previous labels that read it was found in the number 2 of North open cut.

Ex. Wolfgang E. Henkel collection.

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

Chalcedony

Variety Of: 

Quartz

Formula: 
SiO2
Strunz: 
4.DA.05
Hardness: 
7.0
Hardness: 
6.5 - 7.0
Streak: 
White
Type Locality: 
Kadıköy (Chalcedon), Istanbul Province, Marmara Region, Turkey

Seller Information

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