Moving mountains for you
Switch currency

Current Live Auctions

Current Live Fixed Price Sales

Johannite

Views:
Watches:
JYJ668101

Johannite

Description Tabs

Description
Locality: 
Val Daone Mine, Limes, Daone, Chiese Valley, Trento Province, Trentino-Alto Adige, Italy
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
2.4 × 2.3 × 1 cm
Description

Greenish-yellow johannite in isolated crystals which are clustered on this sample. Most of the material from this mine is weathered. This is one of the few samples which was not destroyed by this process. 

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