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Coffinite

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UVM754856

Coffinite

A.L. Flagg
Radioactive

Description Tabs

Description
Locality: 
Boulder County, Colorado, United States of America
Class: 
Massive/Crystalline
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.4 × 3 × 1.8 cm
Description

A rich minature size specimen of coffinite from Boulder County, Colorado.   Old material from the collection of A.L. Flagg (1892-1961).

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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