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Duftite On Calcite With Duftite Inclusions

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KMF636809

Duftite On Calcite With Duftite Inclusions

ex Uli Bahmann
Classic Locality

Description Tabs

Description
Locality: 
Tsumeb Mine, Otavi Highlands, Namibia
Class: 
Combination
Size Range: 
Cabinet (10-18 cm)
Size: 
14 × 10.4 × 6 cm
Description

A multi generational calcite growth consisting of a massive 14cm rhombohedral crystal structure coated with green duftite and then a rich mineralization of second generation water clear calcite crystals covering it. The underlying structure is easily discernible exhibiting numerous sharp crystal edges evident beneath the duftite coverings.

The later calcite development is spotting with many isolated crystal scattered around making it a striking display specimen featuring an eye catching luster.

The condition is superb with only attachment related contacts to peripheral edges.

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

Seller Information

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