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Clinoclase Cornwallite Strashimirite & Tyrolite

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MNR874302

Clinoclase Cornwallite Strashimirite & Tyrolite

Classic Locality

Description Tabs

Description
Locality: 
Bartolomej Area, Novoveská Huta, Spišská Nová Ves County, Košice Region, Slovakia (Slovak Republic)
Class: 
Crystals on Matrix
Size Range: 
Cabinet (10-18 cm)
Size: 
12.5 × 11 × 4 cm
Description

The samples presents combination of four interesting secondary copper minerals. Eye catching dark blue crystals of Clinoclase over the green botryoidal cornwallite and strashimirite. The back side shows velvet green-blueish tyrolite crystals. Very good example from Novoveska Huta!

Mineral Data
What's on the rock

Clinoclase

Formula: 
Cu3(AsO4)(OH)3
Strunz: 
8.BE.20
Crystal System: 
Monoclinic
Hardness: 
2.5 - 3.0
Type Locality: 
Wheal Gorland, St Day United Mines (Poldice Mines), Gwennap, Camborne - Redruth - St Day District, Cornwall, England, UK

Cornwallite

Formula: 
Cu5(AsO4)2(OH)4
Strunz: 
8.BD.05
Crystal System: 
Monoclinic
Hardness: 
4.5
Type Locality: 
Wheal Gorland, St Day United Mines (Poldice Mines), Gwennap, Camborne - Redruth - St Day District, Cornwall, England, UK

Strashimirite

Formula: 
Cu8(AsO4)4(OH)4·5H2O
Strunz: 
8.DC.12
Crystal System: 
Monoclinic
Hardness: 
2.5 - 3.0
Type Locality: 
Zapachitsa Cu deposit (Zapacica), Bov, Svoge Obshtina, Sofiya Oblast (Sofia Oblast), Bulgaria

Tyrolite

Formula: 
Ca2Cu9(AsO4)4(CO3)(OH)8·11H2O
Strunz: 
8.DM.10
Hardness: 
1.5 - 2.0
Type Locality: 
Falkenstein, Falkenstein District, Schwaz, Brixlegg - Schwaz area, Inn valley, North Tyrol, Tyrol, Austria