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Compositional segregation and solid solution in the lead-dominant alunite-type minerals from Broken Hill, N.S.W.

Published online by Cambridge University Press:  05 July 2018

K. J. Rattray ,
M. R. Taylor ,
D. J. M. Bevan  and
A. Pring
K. J. Rattray
Affiliation:
Department of Chemistry , Flinders University, GPO Box 2100 Adelaide, South Australia 5000, Australia
M. R. Taylor
Affiliation:
Department of Chemistry , Flinders University, GPO Box 2100 Adelaide, South Australia 5000, Australia
D. J. M. Bevan
Affiliation:
Department of Chemistry , Flinders University, GPO Box 2100 Adelaide, South Australia 5000, Australia
A. Pring
Affiliation:
Department of Chemistry , Flinders University, GPO Box 2100 Adelaide, South Australia 5000, Australia
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Abstract

A study of the composition and unit cell data of a suite of lead-rich minerals of the alunite-jarosite group from the oxidized zone of the ore body at Broken Hill, New South Wales, Australia, has revealed almost complete XO4 (X = As, P, S) solid solution in these minerals at this deposit. The species in the group noted are hidalgoite, hinsdalite, beudantite, segnitite and plumbogummite. These minerals at Broken Hill exhibit a number of growth textures, including oscillatory zoning, colloform banding and replacements. Zoning in these minerals is due to the segregation of Al- and Fe-rich members, and compositions indicate a strong coupling of Fe3+ with and Al with

Keywords

segregationsolid-solutionhidalgoiteplumbogummitealunite-type mineralsBroken HillAustralia
Type
Mineralogy
Information
Mineralogical Magazine , Volume 60 , Issue 402 , October 1996 , pp. 779 - 785
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1996

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