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Šlikite Znucalite & Woodruffite

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UMM827093

Šlikite Znucalite & Woodruffite

Description Tabs

Description
Locality: 
Uranus Mine, Kleinrückerswalde, Annaberg-Buchholz, Erzgebirge, Saxony, Germany
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
6 × 4.5 × 1.5 cm
Description

This is a piece of gneiss on whose surface some very rare secondary minerals can be seen. Black woodruffite. Bright green znucalite. White Slikit. All minerals are crystalline. Unfortunately very small. But with a magnifying glass or a microscope very clearly recognizable. A new find from the Uranus mine near Annaberg Buchholz. All three minerals have been confirmed by EDX and XRD analyses.

Boxed with Label
Mineral Data
What's on the rock

Šlikite

Formula: 
Zn2Mg(CO3)2(OH)2·4H2O
Crystal System: 
Triclinic
Hardness: 
2
Colour: 
Snow-White
Streak: 
White
Type Locality: 
Vladimír Mine, Ostrov, Karlovy Vary District, Karlovy Vary Region, Czech Republic

Znucalite

Formula: 
Zn12Ca(UO2)(CO3)3(OH)22·4H2O
Strunz: 
5.ED.45
Hardness: 
0.0
Type Locality: 
Lill Mine, Černojamské deposit (Black pits deposit), Březové Hory ore region (Birkenberg), Příbram, Central Bohemia Region, Bohemia (Böhmen; Boehmen), Czech Republic

Woodruffite

Formula: 
Zn(Mn4+,Mn3+)5O10·3½H2O
Strunz: 
4.FL.25
Hardness: 
4.5
Streak: 
Brown
Type Locality: 
Passaic pit (Marshall Mine; Passaic Mine), Sterling Hill, Ogdensburg, Franklin Mining District, Sussex Co., New Jersey, USA

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