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Chalcophyllite & Connellite

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WND777310

Chalcophyllite & Connellite

Rare Mineral
Classic Locality

Description Tabs

Description
Locality: 
South Tolcarne Mine, Beacon, Camborne, Cornwall, United Kingdom
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.9 × 3.2 × 2.5 cm
Description

Small tabular, hexagonal crystals of rare Chalcophyllite assoicet with blue, more or less botryoidal Connellite. The whole specimen consists mostly of both species and some other copper minerals. A rich oldtimer

Mineral Data
What's on the rock

Chalcophyllite

Formula: 
Cu18Al2(SO4)3(AsO4)3(OH)27·33H2O
Strunz: 
8.DF.30
Crystal System: 
Trigonal
Hardness: 
2.0

Connellite

Formula: 
Cu19(SO4)(OH)32Cl4·3H2O
Strunz: 
3.DA.25
Crystal System: 
Hexagonal
Hardness: 
3.0
Type Locality: 
Wheal Providence, Providence Mines, Carbis Bay, St Ives, St Ives District, Cornwall, England, UK
Wendel Minerals

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