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Chalcophyllite

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TRN718172

Chalcophyllite

Classic Locality

Description Tabs

Description
Locality: 
Wheal Gorland, St Day, Cornwall, United Kingdom
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
3 × 2 × 5 cm
Largest Crystal: 
1.00cm
Description

Green plates to 1 cm in gossan 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

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