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Chalcophyllite With Tenorite & Azurite

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JYJ108608

Chalcophyllite With Tenorite & Azurite

Description Tabs

Description
Locality: 
Špania Dolina, Banská Bystrica County, Banská Bystrica Region, Slovakia (Slovak Republic)
Size Range: 
Thumbnail (1-3cm)
Size: 
2.8 × 1.2 × 1.2 cm
Description

A very beautiful specimen showing tabular light blueish to green crystals of chalcophyllite grown onto deep blue coloured aggregates of azurite.

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

Tenorite

Formula: 
CuO
Strunz: 
4.AB.10
Crystal System: 
Monoclinic
Hardness: 
3.5
Streak: 
Black
Type Locality: 
Mt Vesuvius, Somma-Vesuvius Complex, Naples Province, Campania, Italy

Azurite

Formula: 
Cu3(CO3)2(OH)2
Strunz: 
5.BA.05
Crystal System: 
Monoclinic
Hardness: 
3.5 - 4.0
Type Locality: 
Chessy copper mines, Chessy-les-Mines, Le Bois d'Oingt, Rhône, Rhône-Alpes, France...