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Dioptase & Quartz

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MGR130435

Dioptase & Quartz

Description Tabs

Description
Locality: 
Mindouli, Pool Region, Congo (Republic)
Size Range: 
Miniature (4.5-7 cm)
Size: 
6.3 × 4.5 × 3.8 cm
Description

Several dioptase crystals in dark green colour with glossy faces set on tiny quartz-crystals. Rare locality - much more uncommon than Tsumeb dioptase. Main crystal is 17 mm across. In good condition damage-wise.

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...

Quartz

Formula: 
SiO2
Strunz: 
4.DA.05
Crystal System: 
Trigonal
Hardness: 
7.0
Streak: 
White