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Posnjakite & Chalcopyrite

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PJM140541

Posnjakite & Chalcopyrite

Description Tabs

Description
Locality: 
Mount Cleveland Mine, Luina, Heazlewood, Waratah-Wynyard Municipality, Tasmania, Australia
Size Range: 
Miniature (4.5-7 cm)
Size: 
5.7 × 4.8 × 2.8 cm
Description

Bright light blue posnjakite on a fracture in  massive quartz and crystalline chalcopyrite. Whilst Mount Cleveland is well known as a tin deposit, it also had significant reserves of copper.

Mineral Data
What's on the rock

Posnjakite

Formula: 
Cu4(SO4)(OH)6·H2O
Strunz: 
7.DD.10
Crystal System: 
Monoclinic
Hardness: 
2.0 - 3.0
Type Locality: 
Nura-Taldy W deposit, Karagandy Province (Qaragandy Oblysy; Karaganda Oblast'), Kazakhstan...

Chalcopyrite

Formula: 
CuFeS2
Strunz: 
2.CB.10a
Crystal System: 
Tetragonal
Hardness: 
3.5 - 4.0
Earthstones Australia

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