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Thometzekite Helmutwinklerite & Germanite

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POL838206

Thometzekite Helmutwinklerite & Germanite

Analysed
Type Locality

Description Tabs

Description
Locality: 
Tsumeb Mine, Otavi Highlands, Namibia
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
2.6 × 2 × 1.6 cm
Description

Amazing speciem of three (!) rare minerals from famous Tsumeb. Olive-green crystals (!) and film of Thometzekite with white crystals (!) of Helmutwinklerite on massive Germanite from Type Locality (for all three minerals !!!) Analysed! Very rarely seen on mineral market!

Mineral Data
What's on the rock

Thometzekite

Formula: 
Pb(Cu,Zn)2(AsO4,SO4)2·2(H2O,OH)
Strunz: 
8.CG.15
Crystal System: 
Monoclinic
Hardness: 
4.0 - 5.0
Streak: 
White
Type Locality: 
Tsumeb Mine (Tsumcorp Mine), Tsumeb, Otjikoto Region (Oshikoto), Namibia

Helmutwinklerite

Formula: 
Pb(Zn,Cu)2(AsO4)2·2H2O
Strunz: 
8.CG.20
Crystal System: 
Triclinic
Hardness: 
4.5
Streak: 
White
Type Locality: 
Tsumeb Mine (Tsumcorp Mine), Tsumeb, Otjikoto Region (Oshikoto), Namibia

Germanite

Formula: 
Cu13Fe2Ge2S16
Strunz: 
2.CB.30
Crystal System: 
Isometric
Hardness: 
4.0
Type Locality: 
Tsumeb Mine (Tsumcorp Mine), Tsumeb, Otjikoto Region (Oshikoto), Namibia

Seller Information

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