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Brannerite & Uraninite

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ZSO786344

Brannerite & Uraninite

Radioactive

Description Tabs

Description
Locality: 
Rauris, Zell am See District, Salzburg, Austria
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.5 × 2.2 × 1.6 cm
Description

This is a self collected specimen from the Kaiserer quarry. There is a relatively large 0.5 cm brannerite and uraninite spot in the quartz with some well formed brannerite crystal. The brannerite is black and shiny, the uraninite is grey and grainy. There are several additional brannerite spots in the quartz, as well as a green unanalyzed secondary mineral on it.

 

Mineral Data
What's on the rock

Brannerite

Formula: 
(U4+,REE,Th,Ca)(Ti,Fe3+,Nb)2(O,OH)6
Strunz: 
4.DH.05
Crystal System: 
Monoclinic - Prismatic
Hardness: 
4.5 - 5.5
Type Locality: 
Kelley Gulch, Stanley, Stanley Basin District, Custer Co., Idaho, USA

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

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