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Chalcoalumite Azurite & Malachite

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PJM38288

Chalcoalumite Azurite & Malachite

Description Tabs

Description
Locality: 
Mount Oxide Mine, Mount Gordon, Mount Isa City Shire, Queensland, Australia
Size Range: 
Miniature (4.5-7 cm)
Size: 
2.2 × 5.4 × 3.9 cm
Description

Dark royal blue, flat laying, azurite crystals clustered across a black matrix with minor malachite and a pale bue waxy mineral which is mostly chalcoalumite.

An interesting specimen from Mount Elliot.

Mineral Data
What's on the rock

Chalcoalumite

Formula: 
CuAl4(SO4)(OH)12·3H2O
Strunz: 
7.DD.75
Crystal System: 
Monoclinic
Hardness: 
2.5
Streak: 
White
Type Locality: 
Copper Queen Mine (Halero Mine), Queen Hill, Bisbee, Warren District, Mule Mts, Cochise Co., Arizona, USA

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...

Malachite

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

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