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Bartelkeite

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JYJ949138

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Description
Locality: 
Tsumeb Mine, Otavi Highlands, Namibia
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
4.3 × 4 × 3.3 cm
Description

Very good bartelkeite up to almost two mm length in germanite-chalcocite matrix associated with Ge rich segnitite as pseudo-cubic crystals. The brown micro-crystalline mineral is an unknown Fe3-Ge1-oxide

SEM-EDS confirmed. Analysis on request. 

Ex Armin Schöler (eshop minerals) and Joy Desor (Mineralanalytik) collection.