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Malachite & Calcite

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MGR723112

Malachite & Calcite

Description Tabs

Description
Locality: 
Tsumeb Mine, Otavi Highlands, Namibia
Class: 
Crystals on Matrix
Size Range: 
Small cabinet (7-10 cm)
Size: 
8.5 × 5.8 × 4.8 cm
Description

The dark brown matrix is partly covered with light calcite, on it you can see several well shaped crystals of malachite after azurite. These crystals are relatively large, sharp and show intense color and fine texture. Really good contrast! No significant damages to report.

Mineral Data
What's on the rock

Malachite

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

Calcite

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