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Dioptase On Calcite

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PDM1081069

Description Tabs

Description
Locality: 
Tsumeb Mine, Otavi Highlands, Namibia
Class: 
Crystals on Matrix
Size Range: 
Cabinet (10-18 cm)
Size: 
10 × 7 × 3.5 cm
Weight: 
206.00gr
Description

Good size specimen with tens of glassy, gemmy bright crystals of dioptase of a good emerald green colour. They are well exposed and quite aerial on a snow white matrix of rhombohedral calcite crystals.

Acquired in the early 1980’s, it is an Ex Roger Leemans specimen.

Combine specimens to reduce shipping costs!.

Mineral Data
What's on the rock

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...

Calcite

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

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