The abnormal transformation of smectite clay minerals in central Junggar Basin is analyzed according to the petrographic thin section and X - ray diffraction data.

利用岩石薄片和X射线衍射资料，分析了准噶尔盆地腹部地区蒙皂石粘土矿物的不正常转化。

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The main types of clay minerals are illite, smectite, kaolinite and chlorite.

粘土矿物主要由伊利石、蒙皂石、高岭石和绿泥石组成。

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The result shows that the main types of clay minerals are illite , smectite, kaolinite and chlorite.

这些粘土矿物主要由伊利石、蒙皂石、高岭石和绿泥石组成。

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The sample had between 20% to 30% of a type of clay called smectite, which forms in the presence of water, Blake said.

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