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Chalcophyllite

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SLN621649

Chalcophyllite

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Description
Locality: 
Monte Avanza Mine, Forni Avoltri, Udine Province, Friuli Venezia Giulia, Italy
Class: 
Crystals on Matrix
Size Range: 
Cabinet (10-18 cm)
Size: 
5.8 × 12 × 7.7 cm
Weight: 
356.00gr
Description

Interesting specimen from Monte Avanza of rare chalcophyllite in a myriad of small hexagonal crystals of excellent brightness

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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