Authors:
R. R. Anand Soil Science and Plant Nutrition, School of Agriculture University of Western Australia Neulands 6009 W.A.

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R. J. Gilkes Soil Science and Plant Nutrition, School of Agriculture University of Western Australia Neulands 6009 W.A.

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Thermogravimetry is a fast, accurate and highly sensitive method for the quantitative determination of halloysite, kaolinite and gibbsite in ∼10 mg altered feldspar grains from lateritic saprolite materials. A wide range in composition occurs between grains, and is evidence of the existence of various geochemical microenvironments within lateritic saprolite. Variations in dehydroxylation temperature of gibbsite and halloysite/kaolinite between the altered feldspar grains are an analytical artefact. The dehydroxylation temperature of gibbsite and halloysite/kaolinite increased from 242 °C to 302 °C and 454 °C to 491 °C respectively with the increase in the concentration of these minerals in the altered feldspar grains.

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Journal of Thermal Analysis and Calorimetry
Language English
Size A4
Year of
Foundation
1969
Volumes
per Year
1
Issues
per Year
24
Founder Akadémiai Kiadó
Founder's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher
Chief Executive Officer, Akadémiai Kiadó
ISSN 1388-6150 (Print)
ISSN 1588-2926 (Online)

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