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Clinoclase On Cornwallite

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MMM36330

Clinoclase On Cornwallite

Description Tabs

Description
Locality: 
Wheal Unity, St Day, Gwennap, Cornwall, United Kingdom
Size Range: 
Miniature (4.5-7 cm)
Size: 
5 × 4 × 1.5 cm
Description

Individuals crystals of clinoclase to 2 mm with acicular sprays to 5 mm on cornwallite coated quartz matrix.

Interesting contrast of colour.

Mineral Data
What's on the rock

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

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