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Chalcophyllite

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RSG1026964

Description Tabs

Description
Locality: 
Horní Slavkov, Sokolov, Karlovy Vary Region, Czech Republic
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
1.4 × 1.5 × 1.2 cm
Description

Sample covered in numerous lustrous chalcophyllite crystals

In a box 2.8x2.8cm, labelled

FoV : 3mm

Ex Braith 1994

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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