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Johannite

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LAJ794666

Johannite

Radioactive

Description Tabs

Description
Locality: 
Val Daone Mine, Limes, Daone, Chiese Valley, Trento Province, Trentino-Alto Adige, Italy
Class: 
Massive/Crystalline
Size Range: 
Small miniature (3-4.5 cm)
Size: 
1.8 × 1 × 3 cm
Weight: 
8.00gr
Description

Rare specimen of green-yellow Johannite formed by groups of submillimeter crystals

 

Boxed with label

Mineral Data
What's on the rock

Johannite

Formula: 
Cu(UO2)2(SO4)2(OH)2·8H2O
Strunz: 
7.EB.05
Crystal System: 
Triclinic
Hardness: 
2.0 - 2.5
Colour: 
Emerald-green
Type Locality: 
Elias Mine, Jáchymov, Krušné Hory, Karlovy Vary, Bohemia, Czech Republic

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LAJ

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