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Calcite Duftite & Smithsonite

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MGR760330

Calcite Duftite & Smithsonite

Classic Locality

Description Tabs

Description
Locality: 
Tsumeb Mine, Otavi Highlands, Namibia
Class: 
Combination
Size Range: 
Small cabinet (7-10 cm)
Size: 
7.6 × 7.4 × 2.9 cm
Description

What a nice piece! The sharp terminated, glossy calcite crystals show a greenish color caused by duftite inclusions and are covered with micro-crystals of smithsonite. The duftite inclusions are not really uncommon for Tsumeb, but the additional layer with smithsonite makes this piece stand out the crowd. Hard to photograph, better in person. No significant damages to report.

Mineral Data
What's on the rock

Calcite

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

Duftite

Formula: 
PbCu(AsO4)(OH)
Strunz: 
8.BH.35
Crystal System: 
Orthorhombic
Hardness: 
4.5
Type Locality: 
Tsumeb Mine (Tsumcorp Mine), Tsumeb, Otjikoto Region (Oshikoto), Namibia

Smithsonite

Formula: 
ZnCO3
Strunz: 
5.AB.05
Hardness: 
4.0 - 4.5
Streak: 
White
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