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The natural occurrence of x-alumina in lateritic pisolites

Published online by Cambridge University Press:  09 July 2018

Balbir Singh  and
R. J. Gilkes
Balbir Singh
Affiliation:
Centre for Microscopy and Microanalysis, The University of Queensland, BrisbaneQld. 4072
R. J. Gilkes
Affiliation:
Centre for Microscopy and Microanalysis, The University of Queensland, BrisbaneQld. 4072 Soil Science and Plant Nutrition, University of Western Australia, NedlandsWA 6009, Australia
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Abstract

Pisolites in the bauxitic laterites of Darling Range, Western Australia may contain up to 50% AI2O3, although no major Al-containing phases can be identified using standard X-ray diffraction techniques. These pisolites have been investigated using a range of techniques, and it has been demonstrated that Al is present in the form of x-alumina, a poorly crystalline form of A12O3. The x-alumina exhibits an indurating morphology and appears to have formed from a hydrated precursor.

Type
Research Article
Information
Clay Minerals , Volume 30 , Issue 1 , March 1995 , pp. 39 - 44
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1995

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