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Heterogenite & Calcite

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MSD980286

Heterogenite & Calcite

Classic Locality

Description Tabs

Description
Locality: 
Tsumeb Mine, Otavi Highlands, Namibia
Class: 
Combination
Size Range: 
Small miniature (3-4.5 cm)
Size: 
2.5 × 3.3 × 1.5 cm
Weight: 
14.00gr
Description

Highly lustrous, metallic black heterogenite encrusts rhombohedral calcite crystals. A rare specimen of Heterogenite from the classic Tsumeb Mine, Namiba

Ex-Junghans (Munich) collection

Mineral Data
What's on the rock

Heterogenite

Formula: 
CoO(OH)
Strunz: 
4.FE.20
Crystal System: 
Trigonal
Hardness: 
3.0 - 5.0
Type Locality: 
Wolfgang Maaßen Mine field, Schneeberg District, Erzgebirge, Saxony, Germany

Calcite

Polymorph of: 
Formula: 
CaCO3
Strunz: 
5.AB.05
Crystal System: 
Trigonal
Hardness: 
3.0
Streak: 
White