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Cobaltoan Smithsonite & Wulfenite

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SCH92815

Cobaltoan Smithsonite & Wulfenite

Description Tabs

Description
Locality: 
Tsumeb Mine, Otavi Highlands, Namibia
Size Range: 
Cabinet (10-18 cm)
Size: 
11.7 × 6.6 × 2.6 cm
Description

A beautiful, fine, 3-dimensional, two-sided, cabinet specimen from the Tsumeb Mine.

Gemmy and lustrous, pink cobaltoan smithsonite rhombs coat sparsely the matrix on this specimen. A fine accent is the few gemmy, amber, windowpane wulfenite crystals found on some smithsonite crystals at the top of the piece.

The other side features a matrix nearly overgrown with wulfenite. Wulfenite on smithsonite is not that common from Tsumeb. There is also an unknow whitish pulvurent species in some smithsonite rhombs.

Mineral Data
What's on the rock

Cobaltoan Smithsonite

Variety Of: 

Smithsonite

Formula: 
ZnCO3
Strunz: 
5.AB.05
Hardness: 
4.0 - 4.5
Formula: 
(Zn,Co)CO3
Hardness: 
0.0
Colour: 
Pink

Wulfenite

Formula: 
Pb(MoO4)
Strunz: 
7.GA.05
Crystal System: 
Tetragonal
Hardness: 
2.5 - 3.0
Streak: 
White
Type Locality: 
Bad Bleiberg, Bleiberg District, Gailtaler Alpen & Karnische Alpen, Carinthia, Austria
schani

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