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Zeunerite With Arseniosiderite & Hematite

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LGM846499

Zeunerite With Arseniosiderite & Hematite

Ex Ring collection, Munich, Germany
Radioactive

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Description Tabs

Description
Locality: 
Schmiedestollen, Wittichen, Black Forest, Baden-Württemberg, Germany
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
1.4 × 1.5 × 1 cm
Weight: 
2.00gr
Description

Grass-green zeunerite crystals arranged to groups on hematite and feldspar matrix. Associated with cream-colored arseniosiderite aggregates (pic 5, 6).

Slightly radioactive due to content of U (appr. 0.7 micro Sv/h within spitting distance).

Mineral Data
What's on the rock

Zeunerite

Formula: 
Cu(UO2)2(AsO4)2·12H2O
Strunz: 
8.EB.05
Crystal System: 
Tetragonal
Hardness: 
2.5
Type Locality: 
Walpurgis Flacher vein, Weißer Hirsch Mine (Shaft 3), Neustädtel, Schneeberg District, Erzgebirge, Saxony, Germany

Arseniosiderite

Formula: 
Ca2Fe3+3(AsO4)3O2·3H2O
Strunz: 
8.DH.30
Crystal System: 
Monoclinic
Hardness: 
4.5
Type Locality: 
Manganese deposit, Romanèche-Thorens, La Chapelle-de-Guinchay, Saône-et-Loire, Burgundy, France

Hematite

Formula: 
Fe2O3
Strunz: 
4.CB.05
Crystal System: 
Trigonal
Hardness: 
5.0 - 6.0

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