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Goethite

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Watches:
BCK740350

Goethite

Kay Robertson collection

Description Tabs

Description
Locality: 
Lovilia, Monroe County, Iowa, United States of America
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
6.6 × 5.7 × 3.7 cm
Description

You are bidding on a large sample with a calcite vug hosting beautiful sprays of lustrous goethite crystals from this obscure Iowa locality that has produced some of the worlds best goethite. If the piece isn't worth a $20 opening bid I'll gladly keep it! Exceptional for the species. Kay Robertson collection and label. 

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

Seller Information

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