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Conichalcite

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BSM529939

Conichalcite

ex George Fletcher collection #2882

Description Tabs

Description
Locality: 
Dome Rock Copper Mine, Boolcoomatta Reserve, Olary Province, South Australia, Australia
Class: 
Crystals on Matrix
Size Range: 
Small cabinet (7-10 cm)
Size: 
6.7 × 8.3 × 3.5 cm
Description

A reddish brown limonite matrix has a rich cover of a light green botryoidal mineral together with spherical clusters of a darker glassy green mineral.  The label states "Chlorotile on Malachite", but a weak acid test shows it is not malachite.  The most likely species is conichalcite. There is no evidence that the darker green glassy mineral is chlorotile (agardite). This therefore represents an interesting challenge.

Previous labels supplied (not photographed)
Mineral Data
What's on the rock

Conichalcite

Formula: 
CaCu(AsO4)(OH)
Strunz: 
8.BH.35
Crystal System: 
Orthorhombic
Hardness: 
4.5
Type Locality: 
Hinojosa del Duque, Córdoba, Andalusia, Spain
Provenance

George Fletcher Collection

Tue, 2015-09-29 15:51 -- admin
Some History
Name: 
George Fletcher
Dates: 
present
Type: 
Collector/Collection
Specialisms: 
Derbyshire/Midlands, Weardale, United Kingdom
About

George Fletcher lives, worked and collected a lot in the Derbyshire, Peak distrct however as a prolific collector travelled all over the...

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