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Halloysite & Cornwallite

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CHP1075978

Halloysite & Cornwallite

Classic Locality

Description Tabs

Description
Locality: 
Cerro do Algaré Mine, Almodôvar, Beja District, Portugal
Class: 
Massive/Crystalline
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.4 × 2.5 × 1.2 cm
Description

specimen with many white aggregates of crystalline massive halloysite with associate green crystalline balls of cornwallite on matrix.

c. 8992

Mineral Data
What's on the rock

Halloysite

Group Parent: 
Kaolinite-Serpentine Group

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

Seller Information

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