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Rockbridgeite

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MNT151538

Rockbridgeite

ex Hans Walling
Classic Locality

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Description
Locality: 
Upper Palatinate, Bavaria, Germany
Size Range: 
Small cabinet (7-10 cm)
Size: 
7.8 × 6 × 4.5 cm
Description

This is a very interesting and nice example of rockbridgeite from the Upper Palatinate in Bavaria. It was first (incorrectly) listed as dufrenite from the Siegerland - the former owner and collector Hans Walling labeled it as such. During the initial auction i had a discussion with collector friends (thanks to Andreas!) about the specimen, particularly the missing limonite matrix indicated that there could be a mislabeling problem.

I had the specimen being analyzed to be sure and it is XRD confirmed rockbridgeite, and very typical as it came from Hagendorf or Kreuzberg-Pleystein, which are the most probable origins for this german classic.

The specimen consist of dark greenish to blackish radial aggregates / glaskopf structures with quartz inclusions (obviously pegmatitic quartz - should have been a hint to me that it is NOT Siegerland). Ex Walling specimen, acquired by him in 1987. Comes with (wrong!) Walling card.

Mineral Data
What's on the rock

Rockbridgeite

Formula: 
Fe2+Fe3+4(PO4)3(OH)5
Strunz: 
8.BC.10
Crystal System: 
Orthorhombic
Hardness: 
3.5 - 4.5
Type Locality: 
Midvale Mine, South Mountain, Midvale, Rockbridge Co., Virginia, USA

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

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