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Kolwezite & Dolomite

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PDM724290

Kolwezite & Dolomite

Type Locality

Description Tabs

Description
Locality: 
Mashamba West Mine, Kolwezi, Lualaba, DR Congo
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
5.8 × 4.8 × 2.2 cm
Description

Olive green velvety, rounded aggregate of kolwezite on a group of well-defined pink scalenohedral crystals of dolomite (variety cobaltoan dolomite).

The specimen is from the collection of Joseph Lhoest, a Belgian doctor who worked in DR of Congo for many years, and it is well known for his early 90’s articles in the Mineralogical Record about Congo.

Mineral Data
What's on the rock

Kolwezite

Formula: 
(Cu,Co)2(CO3)(OH)2
Strunz: 
5.BA.10
Hardness: 
4.0
Type Locality: 
Musonoi Mine, Kolwezi, Kolwezi District, Katanga Copper Crescent, Katanga (Shaba), Democratic Republic of Congo (Zaïre)

Dolomite

Formula: 
CaMg(CO3)2
Strunz: 
5.AB.10
Crystal System: 
Trigonal - Rhombohedral
Hardness: 
3.5 - 4.0
Streak: 
White

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