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Native Copper With Ktenasite On Calcite

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PJM85108

Native Copper With Ktenasite On Calcite

Ex J & S Mommers Collection.

Description Tabs

Description
Locality: 
Mount Isa, Mount Isa City Shire, Queensland, Australia
Size Range: 
Miniature (4.5-7 cm)
Size: 
5 × 4 × 2.8 cm
Description

A mass of finely branching native copper crystals have formed a bowl or nest shaped cluster on a matrix of translucent yellowish calcite crystals. One side of the specimen has a ricj reddish patina whilst the opposing side has an equally rich coverage of pale blue ktenasite

Mineral Data
What's on the rock

Copper

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

Ktenasite

Formula: 
Zn(Cu,Zn)4(SO4)2(OH)6·6H2O
Strunz: 
7.DD.20
Crystal System: 
Monoclinic
Hardness: 
2.0 - 2.5
Type Locality: 
Jean Baptiste Mine, Kamariza Mines (Kamareza Mines), Agios Konstantinos [St Constantine] (Kamariza), Lavrion District Mines, Lavrion District (Laurion; Laurium), Attikí Prefecture (Attica; Attika), Greece

Calcite

Polymorph of: 
Formula: 
CaCO3
Strunz: 
5.AB.05
Crystal System: 
Trigonal
Hardness: 
3.0
Streak: 
White
Earthstones Australia

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