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Isothermal Treatments of Regularly Interstratified Montmorillonite-Beidellite at Hydrothermal Conditions

Published online by Cambridge University Press:  28 February 2024

Hirohisa Yamada  and
Hiromoto Nakazawa
Hirohisa Yamada
Affiliation:
National Institute for Research in Inorganic Materials, Namiki 1, Tsukuba, Ibaraki 305, Japan
Hiromoto Nakazawa
Affiliation:
National Institute for Research in Inorganic Materials, Namiki 1, Tsukuba, Ibaraki 305, Japan
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Abstract

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A glass in the intermediate composition of montmorillonite and beidellite, 50/50 in mole ratio, was treated under a hydrothermal pressure of 100 MPa, in the temperature range from 250 to 500°C and durations from 2 to 129 days. The phases identified in the products were plotted in a time-temperature-transformation (TTT) diagram. The TTT diagram showed that the regularly interstratified montmorillonite-beidellite (r.i.M-B) was a metastable phase above the temperature of 350°C and changed to the assemblage of Na-rectorite + saponite + quartz, through the intermediate assemblage of beidellite + saponite + quartz. The TTT diagram suggested also that the r.i.M-B might be a stable clay mineral below the temperature of 300°C in the middle region of montmorillonite-beidellite pseudo-binary system, although the laboratory confirmation of the mineral stability was not easy for the sluggish reaction.

Keywords

Hydrothermal conditionIsothermal treatmentsRegularly stratified montmorillonite-beidellite
Type
Research Article
Information
Clays and Clay Minerals , Volume 41 , Issue 6 , December 1993 , pp. 726 - 730
Copyright
Copyright © 1993, The Clay Minerals Society

References

Carman, J. H., 1974 Synthetic sodium phlogopite and its two hydrates: Stabilities, properties, and minéralogie implications Amer. Mineral. 59 261 – 273.Google Scholar
Eberl, D., 1978 Reaction series for dioctahedral smectites Clays & Clay Minerals 26 327 – 340 10.1346/CCMN.1978.0260503.CrossRefGoogle Scholar
Eberl, D. and Hower, J., 1977 The hydrothermal transformation of sodium and potassium smectite into mixed-layer clay Clays & Clay Minerals 25 215 – 227 10.1346/CCMN.1977.0250308.CrossRefGoogle Scholar
Fujita, T., Sugimori, K. and Nakazawa, H., 1991 Conversion of fluor-phlogopite to hydroxy-phlogopite in NaOH and LiOH hydrothermal solutions J. Ceram. Soc. Japan 99 745 – 750 10.2109/jcersj.99.745.CrossRefGoogle Scholar
Greene-Kelly, R., 1953 The identification of montmoril-lonoids in clays J. Soil Sci. 4 233 – 237 10.1111/j.1365-2389.1953.tb00657.x.CrossRefGoogle Scholar
Kitajima, K., and Daimon, N., (1975) Synthesis of Na-flourtetrasilic mica [NaMg2.5(SiO10)F2] and its swelling characteristics: in Nippon Kagaku Kaishi, 1975, 991–995 (in Japanese with English abstract).CrossRefGoogle Scholar
Kitajima, K., Sugimori, K., and Daimon, N., (1973) Studies of the swelling of Na-taeniolite with water: in Nippon Kagaku Kaishi, 1973, 1885–1892 (in Japanese with English abstract).CrossRefGoogle Scholar
Lim, C. H. and Jackson, M. L., 1986 Expandable phyllosilicate reaction with lithium on heating Clays & Clay Minerals 34 346 – 352 10.1346/CCMN.1986.0340316.CrossRefGoogle Scholar
Matsuda, T. and Henmi, K., 1986 Syntheses of trioctahedral micas in the compositional join phlogopite-sodium phlogopite J. Min. Soc. Japan 17 187 – 193.Google Scholar
Putnis, A., 1992 Introduction to Mineral Sciences Cambridge Cambridge University Press 351 – 358 10.1017/CBO9781139170383.CrossRefGoogle Scholar
Watanabe, T. and Sato, T., 1988 Expansion characteristics of montmorillonite and saponite under various relative humidity conditions Clay Science 7 129 – 138.Google Scholar
Yamada, H., Fujita, T. and Nakazawa, H., 1988 Design and calibration of a rapid quench hydrothermal apparatus J. Ceram. Soc. Japan 96 1041 – 1044 10.2109/jcersj.96.1041.CrossRefGoogle Scholar
Yamada, H., Yoshioka, K. and Nakazawa, H., 1991a Hydrothermal synthesis of beidellite from aluminosilicate glass by varying water/solid ratio Mineral. J. 15 300 – 308 10.2465/minerj.15.300.CrossRefGoogle Scholar
Yamada, H., Nakazawa, H., Yoshioka, K. and Fujita, T., 1991b Smectites in montmorillonite-beidellite series Clay Miner. 26 359 – 369 10.1180/claymin.1991.026.3.05.CrossRefGoogle Scholar