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Cornubite & Clinoclase & Cornwallite

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SHS749752

Cornubite & Clinoclase & Cornwallite

Description Tabs

Description
Locality: 
Muravera, Sarrabus, South Sardinia Province, Sardinia, Italy
Class: 
Massive/Crystalline
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3 × 2.2 × 2.2 cm
Description

Cornubite with cornwallite and clinoclase on matrix

Mineral Data
What's on the rock

Cornubite

Formula: 
Cu5(AsO4)2(OH)4
Strunz: 
8.BD.30
Crystal System: 
Triclinic Probably
Hardness: 
4.0 - 0.0
Type Locality: 
Wheal Carpenter, Fraddam, Gwinear-Gwithian, St Erth - Gwithian Area, 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

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