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Coffinite

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UVM589453

Coffinite

Radioactive

Description Tabs

Description
Locality: 
Mount Taylor Deposit, McKinley County, New Mexico, United States of America
Class: 
Massive/Crystalline
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.7 × 2.9 × 2.1 cm
Description

A fine specimen of Coffinite disseminated in Sandstone from the Mount Taylor Deposit.   As the Coffinite is disseminated in matrix, the specimen shows low radioactivity.   Coffinite was the main uranium ore of the Mount Taylor deposit.  

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

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