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Cuprite On Chrysocolla

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PDM652972

Cuprite On Chrysocolla

Description Tabs

Description
Locality: 
Mashamba West Mine, Kolwezi, Lualaba, DR Congo
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
5.3 × 3.8 × 1.8 cm
Largest Crystal: 
0.80cm
Description

Well defined, complex octahedral crystal group of cuprite crystals, well centred in a geode lined with blue chrysocolla. The dark red colour is very intense and the surface is semi-lustrous. A good size aesthetic specimen from the collection of Joseph Lhoest, a Belgian doctor who worked in D.R. of Congo for many years and it is well known for his articles about Congo in the Mineralogical Record.

Mineral Data
What's on the rock

Cuprite

Formula: 
Cu2O
Strunz: 
4.AA.10
Crystal System: 
Isometric
Hardness: 
3.5 - 4.0

Chrysocolla

Formula: 
Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O (x < 1)
Strunz: 
9.ED.20
Crystal System: 
Monoclinic
Hardness: 
2.5 - 3.5

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