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Goethite & Quartz

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MNT617722

Goethite & Quartz

ex Charles Ottley Groom-Napier (M&M) stock @ Krantz
Classic Locality

Description Tabs

Description
Locality: 
Germany
Class: 
Massive/Crystalline
Size Range: 
Miniature (4.5-7 cm)
Size: 
4.8 × 3.6 × 2.6 cm
Description

Groom-Napier specimen (M&M) from the 19th century: botryoidal goethite with whiteish crystals of quartz on the backside. No exact locality specified unfortunately, nice oldie though. As common with M&M: the label says iron glance & calcite which is really wrong but a modus operandi of Groom-Napier.

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

Quartz

Formula: 
SiO2
Strunz: 
4.DA.05
Crystal System: 
Trigonal
Hardness: 
7.0
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