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Chalcoalumite & Ajoite

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MMM51537

Chalcoalumite & Ajoite

Description Tabs

Description
Locality: 
New East Wheal Russell, Tavistock, Devon, United Kingdom
Size Range: 
Thumbnail (1-3cm)
Size: 
2 × 1.5 × 1.5 cm
Description

Choice thumbnail specimen displaying deep blue chalcoalumite with micro crystalline ajoite and brochantite on brecciated slate matrix cemented with native copper and cuprite.

Ex John White collection No. 1544

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

Ajoite

Formula: 
(K,Na)Cu7AlSi9O24(OH)6·3H2O
Strunz: 
9.EA.70
Crystal System: 
Triclinic
Hardness: 
0.0
Type Locality: 
New Cornelia Mine, Ajo, Arizona, United States of America