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A Study of the Hydrothermal Reconstitution of the Kaolin Minerals

Published online by Cambridge University Press:  01 January 2024

Rustum Roy  and
G. W. Brindley
Rustum Roy
Affiliation:
The Pennsylvania State University, University Park, Pennsylvania, USA
G. W. Brindley
Affiliation:
The Pennsylvania State University, University Park, Pennsylvania, USA
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Abstract

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The progressive reconstitution of the thermally decomposed members of the kaolin group (the so-called “meta” phases) has been studied as a function of time, temperature and water vapor pressure of reconstitution, with a view to determining the extent of “pseudomorphism” after the parent structure. The nature of the dehydroxylated dickite which shows a 14A reflection has been investigated further but no additional x-ray data characteristic of a 14A-type structure can be found.

The sequence of rehydration shows that all the meta phases tend to form kaolinite, but the actual sequence of events depends on the parent material. Under the proper conditions well-crystallized kaolinite is obtained from all the meta phases. However, the original minerals themselves could not be converted directly to kaolinite within the time limits of the experiments.

Type
Article
Information
Clays and Clay Minerals (National Conference on Clays and Clay Minerals) , Volume 4 , February 1955 , pp. 125 - 132
Copyright
Copyright © The Clay Minerals Society 1955

Footnotes

Contribution no. 55–32 from the College of Mineral Industries.

References

Brindley, G. W., and Hunter, K., 1955, The thermal reactions of nacrite and the formation of metakaolin, 7-alumina, and mullite: Min. Mag., v. 30, p. 574–584.Google Scholar
Hill, R. D., 1955, 14 A spacings in kaolin minerals: Acta Cryst., v. 8, p. 120.CrossRefGoogle Scholar
Nelson, B. W., and Roy, Rustum, 1954, New data on the composition and identification of chlorites: in Clays and clay minerals, Natl. Acad. Sci.—Natl. Res. Council Pub. 327, p. 335–348.Google Scholar
Robertson, R. H. S., Brindley, G. W., and Mackenzie, R. C., 1954, Mineralogy of kaolin clays from Pugu, Tanganyika: Amer. Min., v. 39, p. 118–138.Google Scholar
Roy, Rustum, and Osborn, E. F., 1952, Some simple aids in the hydrothermal investigation of mineral systems: Econ. Geol., v. 47, p. 717–721.CrossRefGoogle Scholar
Roy, Rustum, and Osborn, E. F., 1954, The system alumina-silica-water: Amer. Min., v. 39, p. 853–885.Google Scholar
Roy, Rustum, Roy, D. M., and Francis, E. E., 1955, New data on thermal decomposition of kaolinite and halloysite: J. Amer. Cer. Soc., v. 38, p. 198–205.CrossRefGoogle Scholar
Saalfeld, H., 1955, Hydrothermale Bildung von Tonmineralen aus Metakaolin: Deut. Keram. Gesell., v. 52, p. 150–152.Google Scholar