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Uraninite In Thucholite With Azurite & Malachite Psm Fossil Wood

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CLB608925

Uraninite In Thucholite With Azurite & Malachite Psm Fossil Wood

Pseudomorph

Description Tabs

Description
Locality: 
Wrexen, Diemelstadt, Waldeck-Frankenberg, Kassel Region, Hesse, Germany
Class: 
Combination
Size Range: 
Small cabinet (7-10 cm)
Size: 
9.5 × 6 × 3.4 cm
Description

Thucholite is an uranium-bearing pyrobitumen - a mix of hydrocarbons, uraninite and sulphides. Wrexen and Twiste, near the City of Kassel in North Hesse, were once prospected for uranium in copper-mineral nests in fossil plants. Not a lot of the tested material came into public.

This is one of the Very rare samples. You can clearly see the fossil plant remnant with the thucholite (a pyrobitumen variety). Around it the sandstone is colored by sulphides - blue azurite, maybe bornite, some green malachite on the back (not pictured).

Mineral Data
What's on the rock

Uraninite

Formula: 
UO2
Strunz: 
4.DL.05
Crystal System: 
Isometric
Hardness: 
5.0 - 6.0
Type Locality: 
Jáchymov (St Joachimsthal), Jáchymov District (St Joachimsthal), Krušné Hory Mts (Erzgebirge), Karlovy Vary Region, Bohemia (Böhmen; Boehmen), Czech Republic

Thucholite

Variety Of: 

Pyrobitumen

Hardness: 
0.0
Colour: 
Black

Azurite

Formula: 
Cu3(CO3)2(OH)2
Strunz: 
5.BA.05
Crystal System: 
Monoclinic
Hardness: 
3.5 - 4.0
Type Locality: 
Chessy copper mines, Chessy-les-Mines, Le Bois d'Oingt, Rhône, Rhône-Alpes, France...

Malachite

Formula: 
Cu2(CO3)(OH)2
Strunz: 
5.BA.10
Crystal System: 
Monoclinic
Hardness: 
3.5 - 4.0

Wood

Variety Of: 

Plant

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