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Chalcophyllite

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GMN687362

Chalcophyllite

Description Tabs

Description
Locality: 
Piesky, Špania Dolina, Banská Bystrica County, Banská Bystrica Region, Slovakia (Slovak Republic)
Class: 
Crystal Group/Cluster
Size Range: 
Miniature (4.5-7 cm)
Size: 
4.5 × 2.5 × 2.5 cm
Description

Lustrous green carpet of hexagonal tabular chalcophyllite crystals on matrix. Very nice, rich specimen.

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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