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Goethite Psm Siderite

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MNT935578

Goethite Psm Siderite

ex Dr. Otto Kuntze, Iowa, USA
Classic Locality

Description Tabs

Description
Locality: 
Pikes Peak, Teller County, Colorado, United States of America
Class: 
Massive/Crystalline
Size Range: 
Small cabinet (7-10 cm)
Size: 
7.3 × 6.5 × 4.2 cm
Weight: 
246.00gr
Description

Not a beauty, but interesting old time classic from the US: a siderite rhomb has been pseudomorphed by goethite, the latter forming acicular crystals. From Pikes Peak, Colorado. Comes with a nice hand written label from german born chemist Dr. Otto Kunze, Iowa, dated around 1900.

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

Siderite

Formula: 
FeCO3
Strunz: 
5.AB.05
Crystal System: 
Trigonal
Hardness: 
3.5 - 4.5
Streak: 
White

Seller Information

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Seller's terms and conditions

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