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Coffinite & Uraninite

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CSL110780

Coffinite & Uraninite

Radioactive

Description Tabs

Description
Locality: 
Moab, Grand County, Utah, United States of America
Size Range: 
Thumbnail (1-3cm)
Size: 
1.3 × 1.1 × 0.8 cm
Description

This is a U and Th bearing silicate species, occurs as black sandstone cement. The shiny black grains in the matrix is uraninite.

Mineral Data
What's on the rock

Coffinite

Formula: 
(U4+,Th)(SiO4)1-x(OH)4x
Strunz: 
9.AD.30
Hardness: 
5.0 - 6.0
Type Locality: 
La Sal No. 2 Mine, Beaver Mesa, Mesa Co., Colorado, 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
Loranth Minerals

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