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Minrecordite & Dioptase

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BCK684460

Minrecordite & Dioptase

David Burgess Collection
Type Locality

Description Tabs

Description
Locality: 
Tsumeb Mine, Otavi Highlands, Namibia
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
4.2 × 2.4 × 1.8 cm
Description

You are bidding on a small miniature sample with a dolomite matrix hosting dozens of secondary, transparent minrecordite rhombohedra with accompanying large crystals of dioptase. Some of the dioptase crystals have some dings... but otherwise a fine small sample of both species. From the 1984 verified find of minrecordite. 

Mineral Data
What's on the rock

Minrecordite

Formula: 
CaZn(CO3)2
Strunz: 
5.AB.10
Crystal System: 
Trigonal
Hardness: 
3.5 - 4.0
Type Locality: 
Tsumeb Mine (Tsumcorp Mine), Tsumeb, Otjikoto Region (Oshikoto), Namibia

Dioptase

Formula: 
CuSiO3·H2O
Strunz: 
9.CJ.30
Crystal System: 
Trigonal
Hardness: 
5.0
Streak: 
Green
Type Locality: 
Altyn-Tyube dioptase deposit (Altyn-Tube), Altyn-Tyube area, Kirghiz Steppes (Asiatic Steppes), Karagandy Province (Qaragandy Oblysy; Karaganda Oblast'), Kazakhstan...

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