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Bartelkeite

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JYJ967151

Bartelkeite

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Description
Locality: 
Tsumeb Mine, Otavi Highlands, Namibia
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
2.6 × 1.5 × 1.4 cm
Description

Yellow greenish bartelkeite on germanite-chalcocite matrix from the famous Tsumeb mine, Namibia. Other minerals associated are Ge rich segnitite, an undescribed Fe3Ge oxide and sulfides associated with germanite-chalcocite. 

SEM-EDS & Raman confirmed. Analysis on request. 

Mineral Data
What's on the rock

Bartelkeite

Formula: 
Pb(Fe2+Ge)[Ge2O7](OH)2·H2O
Strunz: 
9.J0.10
Crystal System: 
Monoclinic
Hardness: 
4.0
Streak: 
White
Type Locality: 
Tsumeb Mine (Tsumcorp Mine), Tsumeb, Otjikoto Region (Oshikoto), Namibia

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$950
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Shipping Information

Postage Area Price
Germany: Insured parcel 5,50€
5.50
International Warenpost tracked, not insured max 1 kg - 10€
10
EU insured parcel - 14€
14
Worldwide < 5000g insured parcel (UPS/TNT/DHL) 50€
50