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Torbernite

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PDM744428

Torbernite

Radioactive

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Description
Locality: 
Margabal Mine, Entraygues-sur-Truyère, Aveyron, Occitanie, France
Class: 
Crystals on Matrix
Size Range: 
Small cabinet (7-10 cm)
Size: 
8.2 × 6.6 × 2.3 cm
Largest Crystal: 
0.50cm
Description

Sharp crystals of deep green torbernite on a smoky quartz matrix. Some crystals show typical polysynthetic and echeloned growths.

A Classic of the French mineralogy, that was acquired in 1985 by Marie Taluriaux.

Mineral Data
What's on the rock

Torbernite

Formula: 
Cu(UO2)2(PO4)2·12H2O
Strunz: 
8.EB.05
Crystal System: 
Tetragonal
Hardness: 
2.0 - 2.5
Type Locality: 
Johanngeorgenstadt, Johanngeorgenstadt District, Erzgebirge, Saxony, Germany

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