Interstratified kaolinite/smctite from the Paris basin.

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  • パリ盆地産カオリナイト／スメクタイト混合層鉱物
  • パリ ボンチサン カオリナイト スメクタイト コンゴウソウ コウブツ

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Kaolinitic clays of the Paris Basin have been shown to develop by progressive conversion of smectite to kaolinite with a transitional development of interstratified kaolinite/smectite.<BR>The proportions of kaolinite layers, ranging from about 4% to about 98%, have been determined by Reynolds' method and by a less rigorous procedure utilizing ideas of Mering. The chemical parameter which shows the most obvious correlation with layer proportions is the weight loss at 1000°C for samples dried at 110°C. A comparison of the mole ratio SiO2/(Al2O3+Fe2O3) shows that most samples seem to contain montmollironitic layers, but a few to contain beidellitic layers.

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