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Duftite Calcite Malachite

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PDM1081070

Duftite Calcite Malachite

Classic Locality

Description Tabs

Description
Locality: 
Tsumeb Mine, Otavi Highlands, Namibia
Class: 
Crystals on Matrix
Size Range: 
Small cabinet (7-10 cm)
Size: 
8.5 × 5.7 × 3.9 cm
Weight: 
185.00gr
Description

Wonderful completely gemmy rhombohedral crystals of calcite with inclusions of grass green malachite or apple green duftite, that also cover the reddish siliceous matrix.

Acquired around 1980 by Gilbert Smedts, with his handwritten label. Ex Paul van Hee specimen.

Combine specimens to reduce shipping costs!.

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

Malachite

Formula: 
Cu2(CO3)(OH)2
Strunz: 
5.BA.10
Crystal System: 
Monoclinic
Hardness: 
3.5 - 4.0

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