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Chalcophyllite

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ESM218027

Chalcophyllite

Description Tabs

Description
Locality: 
Wheal Gorland, St Day, Cornwall, United Kingdom
Size Range: 
Small miniature (3-4.5 cm)
Size: 
2.4 × 3 × 1.9 cm
Description

Sharp hexagonal blue chalkophyllite crystals on matrix

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