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Azurite Cornwallite Clinoclase & Malachite

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BCK717696

Azurite Cornwallite Clinoclase & Malachite

Martin Jensen collection
Classic Locality

Description Tabs

Description
Locality: 
Mammoth Mine, Tintic District, Juab County, Utah, United States of America
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
2.8 × 2.6 × 2.1 cm
Description

You are bidding on a beautiful thumbnail from the Mammoth Mine with rich crystals of azurite, clinoclase, cornwallite and balls of malachite on quartz matrix. Very rich sample collected by Martin in 2010. 

Mineral Data
What's on the rock

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...

Cornwallite

Formula: 
Cu5(AsO4)2(OH)4
Strunz: 
8.BD.05
Crystal System: 
Monoclinic
Hardness: 
4.5
Type Locality: 
Wheal Gorland, St Day United Mines (Poldice Mines), Gwennap, Camborne - Redruth - St Day District, Cornwall, England, UK

Clinoclase

Formula: 
Cu3(AsO4)(OH)3
Strunz: 
8.BE.20
Crystal System: 
Monoclinic
Hardness: 
2.5 - 3.0
Type Locality: 
Wheal Gorland, St Day United Mines (Poldice Mines), Gwennap, Camborne - Redruth - St Day District, Cornwall, England, UK

Malachite

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

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