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Chalcophyllite & Connellite

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PAV917873

Chalcophyllite & Connellite

New Discovery

Description Tabs

Description
Locality: 
Slag dumps, Sítio do Cobre Mine, Vila Velha de Ródão, Castelo Branco District, Portugal
Class: 
Crystal Group/Cluster
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.3 × 2.2 × 1.7 cm
Description

Very nice sample with gemmy chalcophyllite crystals. Connellite is also present, mixed with tinny chalcophyllite.

Chalcophyllite was confirmed by EDS and RAMAN.

Although the mineral has been questioned, for this locality, recent studies show that it actually exists in the slags of Sitio do Cobre.

Collected: 
2021
Boxed with Label
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

Connellite

Formula: 
Cu19(SO4)(OH)32Cl4·3H2O
Strunz: 
3.DA.25
Crystal System: 
Hexagonal
Hardness: 
3.0
Type Locality: 
Wheal Providence, Providence Mines, Carbis Bay, St Ives, St Ives District, Cornwall, England, UK