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Siderite & Chalcocite

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HGM13128

Siderite & Chalcocite

Description Tabs

Description
Locality: 
Tsumeb Mine, Otavi Highlands, Namibia
Size Range: 
Thumbnail (1-3cm)
Size: 
1.8 × 1.2 × 1.1 cm
Largest Crystal: 
0.10cm
Description

One of the more "exotic" minerals from Tsumeb, the light yellow nickel-rich variety of siderite completely covering the one side of a silver, shiny, composite chalcocite crystal.

A rare and unusual combo from Tsumeb.

Mineral Data
What's on the rock

Siderite

Formula: 
FeCO3
Strunz: 
5.AB.05
Crystal System: 
Trigonal
Hardness: 
3.5 - 4.5
Streak: 
White

Chalcocite

Formula: 
Cu2S
Strunz: 
2.BA.05
Crystal System: 
Monoclinic
Hardness: 
2.5 - 3.0
House of Gems