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Pyrolusite & Manganite

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RSL970269

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Description
Locality: 
Gremmelsbach, Triberg im Schwarzwald, Freiburg Region, Baden-Württemberg, Germany
Class: 
Crystal Group/Cluster
Size Range: 
Miniature (4.5-7 cm)
Size: 
6.7 × 5.5 × 4.1 cm
Description

A novelty from Sainte-Marie-aux-Mines 2022. These specimens come from a recent find in this mining area of the Black Forest and are reminiscent of those found decades ago in this area. They show radial aggregates of extremely brilliant pyrolusite crystals that partially replace manganite. By X-ray diffraction we have been determined the presence of both species, even with a certain predominance of manganite. They usually appear on a matrix of pink granite or as groups of large crystals in parallel growth. In the specimens we can observe the inclined flattened terminal faces. They are highly aesthetic pieces those will become part of the best specimens of these species for European mineralogy. We will send the XRD to the buyer.

Mined: 
2021
Mineral Data
What's on the rock

Pyrolusite

Formula: 
MnO2
Strunz: 
4.DB.05
Hardness: 
2.0 - 6.5

Manganite

Formula: 
Mn3+O(OH)
Strunz: 
4.FD.15
Hardness: 
4.0
Type Locality: 
Manganese deposit, Ilfeld, Nordhausen, Harz, Thuringia, Germany

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€80
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Shipping Information

Postage Area Price
Spain
€9
Europe
€17
Worldwide
€19
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Standard shipping is via registered mail to Europe and airmail worldwide. Final shipping costs will be confirmed on invoice. Shipping after payment. It is possible to combine shipping of multiple won/purchased items. If you want to use this option, please let me know by e-mail before you make payment of single items. I will send a combined invoice when you are ready. Please note that i can not hold any responsibility for transport damages or loss of shipped goods if you do not select insured shipping, which can be asked for. Transport damages are to be claimed directly to the transport company in case of insured shipment. The recipients are solely responsible for the compliance of the shipped items with local customs restrictions and tax issues.

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