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Native Copper With Malachite & Nantokite

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PJM41072

Native Copper With Malachite & Nantokite

Ex Michael Newnham Collection

Description Tabs

Description
Locality: 
Mount Isa, Mount Isa City Shire, Queensland, Australia
Size Range: 
Miniature (4.5-7 cm)
Size: 
3.2 × 6 × 2.5 cm
Description

A delicate group of fine native copper crystals from the Mount Isa Mines in outback Queensland.

The specimen is made up of a series of crystallised branches of copper with abrown to green patina and with malachite sprays adhering in places, the green patina appears to be predominately nantokite

Mineral Data
What's on the rock

Copper

Formula: 
Cu
Strunz: 
1.AA.05
Crystal System: 
Isometric
Hardness: 
2.5 - 3.0

Malachite

Formula: 
Cu2(CO3)(OH)2
Strunz: 
5.BA.10
Crystal System: 
Monoclinic
Hardness: 
3.5 - 4.0

Nantokite

Formula: 
CuCl
Strunz: 
3.AA.05
Crystal System: 
Isometric
Hardness: 
2.0 - 2.5
Streak: 
White
Type Locality: 
Carmen Bajo Mine, Nantoko, Copiapó Province, Atacama Region, Chile
Earthstones Australia

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