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Brannerite & Talc

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CSL127391

Brannerite & Talc

Radioactive

Description Tabs

Description
Locality: 
Oberdorf an der Laming, Laming Valley, Bruck-Mürzzuschlag District, Styria, Austria
Size Range: 
Thumbnail (1-3cm)
Size: 
2.6 × 1.2 × 2 cm
Description

This is an interesting talc specimen with black, anhedral brannerite crystals. Rare combination of this two mineral species.

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

Talc

Formula: 
Mg3(Si4O10)(OH)2
Strunz: 
9.EC.05
Crystal System: 
Triclinic
Hardness: 
1.0
Streak: 
White
Loranth Minerals

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