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Chalcocite With Dioptase & Malachite

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SHS37006

Chalcocite With Dioptase & Malachite

Ex Dr Winfried Böhmer Collection (Wunstorf, Germany)

Description Tabs

Description
Locality: 
Guchab Propsect, Grootfontein, Otjozondjupa Region, Namibia
Size Range: 
Small cabinet (7-10 cm)
Size: 
8 × 5.4 × 2.7 cm
Description

Massive chalcocite with some dioptase and malachite aside

Mineral Data
What's on the rock

Chalcocite

Formula: 
Cu2S
Strunz: 
2.BA.05
Crystal System: 
Monoclinic
Hardness: 
2.5 - 3.0

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...

Malachite

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