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Chrysocolla Psm Malachite

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PDM621592

Chrysocolla Psm Malachite

Pseudomorph

Description Tabs

Description
Locality: 
Mashamba West Mine, Kolwezi, Lualaba, DR Congo
Class: 
Crystal Group/Cluster
Size Range: 
Miniature (4.5-7 cm)
Size: 
4.8 × 3 × 2.5 cm
Description

Spheroidal groups of pale blue chrysocolla that are a pseudomorph after botryoidal malachite. A second generation of sharp lustrous malachite crystals cover the chrysocolla layers.

Acquired in 1989, it is an Ex. Gerard Vogel specimen.

Mineral Data
What's on the rock

Chrysocolla

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

Malachite

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

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