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Autunite

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TPX551721

Autunite

Radioactive

Description Tabs

Description
Locality: 
Assunção Mine, Aldeia Nova, Sátão, Viseu District, Portugal
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
4.1 × 1.7 × 0.8 cm
Weight: 
20.00gr
Description

Very interesting specimen consisting in a crust of autunite crystals over quartz matrix from this classic Portuguese mine nowaday exhausted.
Autunite is fluorescent under ultraviolet light even in broad daylight as you can see in one of the photos.

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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