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Tyrolite Azurite & Cornwallite

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BCK658430

Tyrolite Azurite & Cornwallite

Classic Locality

Description Tabs

Description
Locality: 
Gold Hill Mine, Gold Hill, Tooele County, Utah, United States of America
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.8 × 3 × 2 cm
Description

You are bidding on a small miniature sample with very rich clusters of tyrolite in two vugs associated with sharp azurite crystals, balls of malachite, chrysocolla, a few dark green balls of cornwallite and gel-like conichalcite. Tyrolite is rare at Gold Hill and this is a very good sample of the mineral from the locality. 

Mineral Data
What's on the rock

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

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...

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

Seller Information

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