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Duftite & Calcite

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WND594201

Duftite & Calcite

Classic Locality

Description Tabs

Description
Locality: 
Tsumeb Mine, Otavi Highlands, Namibia
Class: 
Crystals on Matrix
Size Range: 
Small cabinet (7-10 cm)
Size: 
9.3 × 6.9 × 2.7 cm
Description

This nice and also typical specimen features several sharp rhombohedrons of calcite, coated with olive-coloured duftite. The calcite is, so far it is not "duftite-coated" highly lustrous and partially transparent. A good specimen in excellent shape from the famous Tsumeb Mine.

Mineral Data
What's on the rock

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

Calcite

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

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