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Native Iron Troilite & Cohenite

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RHT742111

Native Iron Troilite & Cohenite

ex collection Holger Engelmohr
With Antique Label

Description Tabs

Description
Locality: 
Bühl, Weimar, Ahnatal, Kassel Region, Hesse, Germany
Class: 
Combination
Size Range: 
Miniature (4.5-7 cm)
Size: 
6.7 × 4.2 × 1.7 cm
Weight: 
66.00gr
Description

A very rare find of terrestrial native iron in basalt. You can find much more native iron in meteorites. This from a historical find. Also present should be the (terrestrial) rare iron carbide cohenite.

According to Klaus Belendorff the material also includes troilite, a native iron protosulphide, related to the species pyrrhotite and  smythite. But this is not listed anywhere.

The locality was an ancient quarry, mined until 1925, when it was flooded. Since then it is a swimming pond.

Comes with an antique label.

Mineral Data
What's on the rock

Iron

Formula: 
Fe
Strunz: 
1.AE.05
Crystal System: 
Isometric
Hardness: 
4.5
Streak: 
Grey
Type Locality: 
Qeqertarsuaq Island (Disko Island), Qaasuitsup, Greenland

Troilite

Formula: 
FeS
Strunz: 
2.CC.10
Hardness: 
3.5 - 4.0
Type Locality: 
Albareto meteorite, Albareto, Modena Province, Emilia-Romagna, Italy

Cohenite

Formula: 
(Fe,Ni,Co)3C
Strunz: 
1.BA.05
Hardness: 
5.5 - 6.0
Type Locality: 
Magura meteorite, Slanica, Námestovo, Námestovo Co., Žilina Region, Slovakia

Seller Information

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Seller's terms and conditions

Rockhunter does not sell by size or weight. Sizes and weights given are just for the basic orientation of the buyer and shipment planning and might not be exact, even though we're always trying to be as exact as possible.

Photos might show the item in an enlarged or reduced dimension. Please refer to the given sizes. Please note that all photos have been adjusted – e.g., trimmed to show a certain aspect/a detail, colours adjusted, contrasts highlighted etc. to give the customer an optimal impression, while we try to stay as close to the natural appearance as possible. If it shows that photos cannot depict the natural appearance correctly, we will usually mention this (e.g., all Dioptase photos will never show the rich colour and lustre of the mineral). However, the colours on other photos might be a little off too. Also, computer screens might show colours differently.

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