Hostname: page-component-586b7cd67f-rcrh6 Total loading time: 0 Render date: 2024-11-22T19:23:14.815Z Has data issue: false hasContentIssue false
  • English
  • Français

Interaction of Kaolinite with Calcite on Heating: III. Effect of Different Kaolinites

Published online by Cambridge University Press:  09 July 2018

R. C. Mackenzie ,
L. Heller-Kallai ,
A. A. Rahman  and
H. M. Moir
R. C. Mackenzie
Affiliation:
Departments of Chemistry and Soil Science, University of Aberdeen, Meston Walk, Old Aberdeen AB9 2UE, Scotland
L. Heller-Kallai
Affiliation:
Department of Geology, Institute of Earth Sciences, The Hebrew University, Jerusalem 91904, Israel
A. A. Rahman
Affiliation:
Departments of Chemistry and Soil Science, University of Aberdeen, Meston Walk, Old Aberdeen AB9 2UE, Scotland
H. M. Moir
Affiliation:
Departments of Chemistry and Soil Science, University of Aberdeen, Meston Walk, Old Aberdeen AB9 2UE, Scotland
Get access Rights & Permissions [Opens in a new window]

Abstract

The degree of distortion of the calcite endotherm on differential thermal analysis (DTA) curves for kaolinite-calcite mixtures depends on the kaolinite sample used as well as on the factors previously established. Although no two of the ten kaolinite samples employed, even if from the same general locality, produced identical effects under all experimental conditions, a general relationship between locality of origin and degree of distortion was noted. The crystalline species detected in the products of heating, after standing in air at room temperature, included portlandite, calcite, aragonite, vaterite and the high-temperature phases gehlenite, α′-Ca2SiO4, and 12CaO. 7Al2O3. The actual species present again depended on the kaolinite sample. Although the results cannot be directly related to the volatiles evolved along with water on dehydroxylation of the different kaolinites, a tentative explanation is offered on the basis of the effects of the volatiles on the surfaces of the particles present.

Type
Research Article
Information
Clay Minerals , Volume 23 , Issue 2 , June 1988 , pp. 191 - 203
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1988

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Guillem Villar, M. C. & Guillem Monzonis, C. (1984) Kinetics and mechanism of formation of the amorphous phase from barium carbonate and kaolin. Thermochim, Acta 73, 67-78.Google Scholar
Hayes, J. B. (1963) Kaolinite from Warsaw geodes, Keokuk region, Iowa. Iowa Acad. Sci. 70, 261-272.Google Scholar
Heller-Kallai, L. & Mackenzie, R. C. (1987) Effect of volatiles from kaolinite on calcite dissolution: DTA evidence. Clay Miner. 22, 349-350.CrossRefGoogle Scholar
Heller-Kallai, L., Miloslavski, I. & Aizenshtat, Z. (1986) Volatile products of clay mineral pyrolysis. Naturwiss. 73, 615-617.Google Scholar
Heller-Kallai, L., Miloslavski, I. & Aizenshtat, Z. (1987) Volatile products of clay mineral pyrolysis revealed by their effect on calcite. Clay Miner. 22, 339-348.CrossRefGoogle Scholar
Heller-Kallai, L., Miloslavski, I., Aizenshtat, Z. & Halicz, L. (1988) Chemical and mass spectrometric analysis of volatiles derived from clays. Am. Miner (in press).Google Scholar
Keller, W. D. (1986) Composition of condensates from heated clay minerals and shales. Am. Miner. 71, 1420-1425.Google Scholar
Keller, W. D., Pickett, E. E. & Reesman, A. L. (1966) Elevated dehydroxylation temperature of the Keokuk geode kaolinite–a possible reference material. Proc. Int. Clay Conf. Jerusalem, 1, 75-85.Google Scholar
Mackenzie, R. C. & Rahman, A. A. (1987) Interaction of kaolinite with calcite on heating. I. Instrumental arid procedural factors for one kaolinite in air and nitrogen. Thermochim. Acta 121, 51-69.Google Scholar
Mackenzie, R. C., Rahman, A. A. & Moir, H. M. (1988) Interaction of kaolinite with calcite on heating. II. Mixtures with one kaolinite in carbon dioxide. Thermochim. Acta 124, 119-127.Google Scholar
Paulik, J., Paulik, F. & Wieczorek-Ciurowa, K. (1980). Influence of foreign materials upon the thermal decomposition of dolomite, calcite and magnesite. Part III. Influence of the presence of water. Thermochim. Acta 38, 165-172.CrossRefGoogle Scholar
Robertson, R. H. S., Brindley, G. W. & Mackenzie, R. C. (1954) Mineralogy of kaolin clays from Pugu, Tanganyika. Am. Miner. 39, 118-139.Google Scholar
Tsvetkov, A. I., Valyashikhina, E. P. & Piloyan, G. O. (1964). Differentsialnyi Termicheskii Analiz Karbonatnykh Mineralov [Differential Thermal Analysis of Carbonate Minerals], pp.26-28. Izd. Nauka, Moscow (in Russian).Google Scholar
Van Olphen, H. & Fripiat, J. J. (1979) Data Handbook for Clay Minerals and Other Non-metallic Minerals. Pergamon, Oxford.Google Scholar