モンモリロナイトのX線底面反射と層間陽イオンの関係― 特にCaおよびNaの分布について

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書誌事項

タイトル別名
  • Relationship between X-ray basal reflections and interlayer cations of montmorillonite: on the distribution of Ca and Na ions
  • モンモリロナイト ノ Xセン テイメン ハンシャ ト ソウカン ヨウイオン ノ

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抄録

A montmorillonite from Matsuki mine, Akita Prefecture, was saturated with Ca, Mg, Na and K ions, respectively. The basal reflection patterns of the cationsaturated specimens were examined by an X-ray diffractometer under controlled humidity conditions ranging from 0 to 100 per cent relative humidity. With decreasing relative humidity, the phase with smaller basal spacing appears in each specimen, but two phases often coexist at the transitional steps. X-ray diffraction patterns of (Ca, Na)-montmorillonites collected from an alteration zone of a Kuroko deposit of Matsuki mine were examined under 40% relative humidity, under which the difference of basal reflection angles between Ca-montmorillonite and Na-montmorillonite was especially clear. These patterns were compared with calculated X-ray diffraction profiles, and it was concluded that there would be a segregation structure of interlayer Ca and Na ions in these montmorillonites.

収録刊行物

  • 鉱物学雜誌

    鉱物学雜誌 14 (Special1), 78-89, 1979

    一般社団法人　日本鉱物科学会

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