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1994 Fiscal Year Final Research Report Summary

Study on growth mechanism of clay minerals under different environmental conditions

Research Project

Project/Area Number 05640534
Research Category

Grant-in-Aid for General Scientific Research (C)

Allocation TypeSingle-year Grants
Research Field Petrology/Mineralogy/Science of ore deposit
Research InstitutionHIROSHIMA UNIVERSITY

Principal Investigator

KITAGAWA Ryuji  Hiroshima Univ.Faculty of Associate Prof., 理学部, 助教授 (70112167)

Co-Investigator(Kenkyū-buntansha) HOSHINO K  Hiroshima Univ.Faculty of Sci.Research associate, 理学部, 助手 (80190198)
WATANABE M  Hiroshima Univ.Faculty of Sci.Associate Professor, 理学部, 助教授 (80033900)
TAKENO S  Hiroshima Univ.Faculty of Sci.Professor, 理学部, 教授 (00033829)
Project Period (FY) 1993 – 1994
KeywordsClay mineral / Mica clay mineral / Microtopograph / Rectorite / Crystal growth / Kaolinite / Pyrophyllite / Hydrothermal
Research Abstract

This study deals with the growth-mechanism of clay minerals under different environmental conditions (physico-chemical) by mean of Au-decoration technique under the transmission electron microscopic obsevation.
Based on these obsevations, circular, polygonal or malformed circular spiral patterns were observed on the surface of clay minerals, such as mica clay minerals (sericite, illite), kaolinite, pyrophyllite and interstratified mineral of mica and smectite.Different growth patterns on each clay mineral were obserbed, special attention to mode of occurrence of specimens.
At first time, crystal growth patterns on the interstratified mineral of mica and smectite were clearly observed.Based on the observation, interstratified minerals seem to be grown by spiral growth mechanism.

  • Research Products

    (14 results)

All Other

All Publications (14 results)

  • [Publications] Ryuji Kitagawa,et al.: "Surface microtopography of interstratified mica and smectite from the Goto pyrophyllite aeposit,Japan" Clay Minerals. 29. 709-715 (1994)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Ryuji Kitagawa,et al.: "Scanning electron microscopic examination of qurtz surface textures from kaolinized granitic rocks" Jour. Sci. Hiroshima university Ser.C. 10. 159-172 (1994)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Atsuyuki Inoue,Ryuji Kitagawa: "Morphological characteristics of illitic clay minerals from a hydrothermal system" American Mineralogist. 79. 700-711 (1994)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Ryuji Kitagawa,Hirotsugu Nishido: "Orientation analysis and formation ages of fractures filled with clay minerals in Hiroshima and Shimane Prefecture,southwest Japan" Jour.Japan Soci.Eng.Geol.35. 60-68 (1994)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Yang,P, Ryuji Kitagawa: "Weathering of biotite in the Daito granodiorite Shimane Prefecture" Jour.Min.Pet.Econ.Geo.89. 75-86 (1994)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Ryuji Kitagawa: "Surface microtopography of rectorite from Allevald,France" Proceeding of Euro-clay conference. (1995)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Ryuji Kitagawa Churchman J.et al.(eds.): "Clays;Controlling Environment" CSIRO, 700 (1994)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] R.Kitagawa ;: "Surface microtopography of interstratified mica and smectite from the Goto pyrophyllite deposit, Japan" Clay Minerals. 29. 709-715 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] R.Kitagawa ;: "Scanning electron microscopic examination of quartz surface textures from kaolinized granitic rocks" Jour.Sci.Hiroshima univ.ser.C. 10. 159-172 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] A.Inoue ;: "Morphological characteristics of illitic clay minerals from a hydrothermal system" American Mineralogist. 79. 700-711 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] R.Kitagawa ;: "Orientation analysis and formation ages of fractures filled with clay minerals in Hiroshima and Shimane Prefecture, southwest Japan" Jour.Japan Soci.Eng.Geol.35. (1994)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] R.Kitagawa ;: "Surface microtopography of rectorite from Allevald, France" (in printing). (1994)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] P.Yang ;: "Weathering of biotite in the Daito granodiorite, Shimane Prefecture." Jour.Min.Pet.Econ.Geo.89. 75-86 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] R.Kitagawa ;: "Coarsening process of a hydrothermal sericite sample using surface microtopography and transmission electron microscopy techniques" Clays ; Controlling the environment Churchman, J.et al.(eds.), CSIRO.

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 1996-04-15  

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