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Bartelkeite

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JYJ967147

Bartelkeite

Description Tabs

Description
Locality: 
Tsumeb Mine, Otavi Highlands, Namibia
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
1.6 × 1.3 × 0.9 cm
Description

Very rich and good specimen hosting bartelkeite crystals in germanite-chalcocite matrix. 

Other minerals associated are an unknown Fe3Ge oxide that is undescribed and minor smithsonite. 

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