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Goethite Psm Pyrite

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MNT962128

Goethite Psm Pyrite

ex Dr. Otto Kuntze, Iowa, USA
Classic Locality

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Description
Locality: 
Clear Creek Township, Marion County, Kansas, United States of America
Class: 
Single Crystal
Size Range: 
Thumbnail (1-3cm)
Size: 
1.2 × 0.8 × 0.7 cm
Weight: 
1.00gr
Description

Classic US specimen from Clear Creek Township, Marion Co., Kansas, USA. Ex Dr. Otto Kuntze, 1867-1908, prominent Iowa mineral collector and dealer, born in Nordhausen, Germany. Small octahedron labeled as goethite psm magnetite, the last one that was present in a small cardbox from obviously formerly 200 crystals that Kuntze offered as a lot. Found in a forgotten drawer at Krantz. Given the sedimentary geology of that area, pyrite is much more probable as the proto-mineral.

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

Pyrite

Formula: 
FeS2
Strunz: 
2.EB.05a
Crystal System: 
Isometric
Hardness: 
6.0 - 6.5

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Terms & Conditions

Thank you for your interest in my offers! Payment is possible via Paypal, bank transfer or cash if you pick up the item(s) personally. Bank data will be provided after settling the auction/transaction(s) if needed.

In case you are not happy with a specimen, you may send it back within 4 weeks. After receipt, i will refund the price minus shipping costs. Please inform me before sending an item back. If you have any questions (or maybe complaints) please feel free to contact me.

Best regards Roger

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