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Torbernite & Turquoise On Chrysocolla

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PJM41086

Torbernite & Turquoise On Chrysocolla

Ex M Brown Collection #a194

Description Tabs

Description
Locality: 
Lake Boga Granite Quarry, Lake Boga, Swan Hill, Victoria, Australia
Size Range: 
Small cabinet (7-10 cm)
Size: 
5.2 × 8.4 × 6 cm
Description

A cavity in granite has been coated over the orthoclase, muscovite and quartz with chrysocolla. Onto the chrysocolla numerous small balls of turquoise have formed and then brightgreen torbernite blades have formed.

This is an extremely large chrysocolla specimen for Lake Boga and has the torbernite and turquoise as an added bonus.

Mineral Data
What's on the rock

Torbernite

Formula: 
Cu(UO2)2(PO4)2·12H2O
Strunz: 
8.EB.05
Crystal System: 
Tetragonal
Hardness: 
2.0 - 2.5
Type Locality: 
Johanngeorgenstadt, Johanngeorgenstadt District, Erzgebirge, Saxony, Germany

Turquoise

Formula: 
Cu(Al,Fe3+)6(PO4)4(OH)8·4H2O
Strunz: 
8.DD.15
Crystal System: 
Triclinic
Hardness: 
5.0 - 6.0

Chrysocolla

Formula: 
Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O (x < 1)
Strunz: 
9.ED.20
Crystal System: 
Monoclinic
Hardness: 
2.5 - 3.5
Earthstones Australia

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