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Autunite

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TPX798013

Autunite

Radioactive

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Description
Locality: 
Assunção Mine, Aldeia Nova, Sátão, Viseu District, Portugal
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.5 × 3 × 1.8 cm
Weight: 
18.00gr
Description

Very nice group of Autunite crystals on a possible Nsutite crust common in this deposit but not analyzed in this sample, on a Quartz matrix. These pieces were formerly cataloged as Uranocircita, but it seems that they are Autuitites. Autunite is highly fluorescent under UV light.

Mineral Data
What's on the rock

Autunite

Formula: 
Ca(UO2)2(PO4)2·11H2O
Strunz: 
8.EB.05
Crystal System: 
Tetragonal
Hardness: 
2.0 - 2.5
Type Locality: 
Saint-Symphorien-de-Marmagne, Montcenis, Saône-et-Loire, Burgundy, France

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