Mossbaur Studies of Iron in Illite and Montmorillonite

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概要

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• Three-layer type iron bearing clay minerals, Illite and Montmorillonite, have been analyzed by Mossbauer effect with a view to find the oxidation state, coordination symmetry and site distortion of the iron ion. Furthermore, these samples were treated with concentrated solutions of Fe(NO_3)_3, pH 0.1 to study the exchange of cations. It is concluded that in the natural samples of Montmorillonite and Illite, Fe^<3+> ion is in the alumina octahedra in place of Al^<3+> ion. In the case of Montmorillonite, treated with ferric nitrate solution, the iron ion is taken up in three inequivalent sites of cubic symmetry: into the vacant sites of Si tetrahedra as [FeO_4]--, in the basal plane and on the broken edges. In the case of Illite, the main exchange location for Fe^<3+> is the broken edge and only a small amount goes into the basal plane.

• 社団法人日本物理学会の論文
• 1969-03-05

著者

• Saraswat I.

  Chemistry Department University Of Roorkee

• Puri S.

  Chemistry Department University Of Roorkee

• Malathi N.

  Physics Department University Of Roorkee

• Malathi N.

  Physics Department University Of Roorkee:atomic Engergy Commission Junior Research Fellow.

関連論文

• Mossbaur Studies of Iron in Illite and Montmorillonite
• Mossbauer Studies of Iron In Illite and Montmorillonite. : II. Thermal Treatment

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