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Chrysocolla Psm Limonite Malachite Azurite

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CLB206096

Chrysocolla Psm Limonite Malachite Azurite

Classic Locality

Description Tabs

Description
Locality: 
Lupoto Mine, Kakumba, Kipushi, Haut-Katanga, DR Congo
Size Range: 
Miniature (4.5-7 cm)
Size: 
6 × 4.5 × 2.8 cm
Description

A very attractive specimen of obviously replaced crystals, covered with little chrysocolla crystals. Probably a triple pseudomorph after azurite crystals altered to malachite, then to limonite and at last partially altered to chrysocolla. The back of the specimen is hollow, it's light as a feather. Some little botryoidal malachite peeking through.

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

Azurite

Formula: 
Cu3(CO3)2(OH)2
Strunz: 
5.BA.05
Crystal System: 
Monoclinic
Hardness: 
3.5 - 4.0
Type Locality: 
Chessy copper mines, Chessy-les-Mines, Le Bois d'Oingt, Rhône, Rhône-Alpes, France...

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