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Johannite & Natrozippeite

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JYJ934161

Johannite & Natrozippeite

Description Tabs

Description
Locality: 
Geevor Mine, Cornwall, United Kingdom
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
1.3 × 0.8 × 0.6 cm
Description

Green johannite with natrozippeite from Geevor mine, Cornwall, England, UK. SEM-EDS confirmed

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

Natrozippeite

Formula: 
Na5(UO2)8(SO4)4O5(OH)3·12H2O
Group Parent: 
Zippeite Group
Strunz: 
7.EC.05
Crystal System: 
Tetragonal
Hardness: 
5.0 - 5.5
Streak: 
yellow
Type Locality: 
Happy Jack Mine (Blue Dike Mine), Copper Point, White Canyon, White Canyon District, San Juan Co., Utah, USA