Oblique-Texture Electron Diffraction
Oblique-texture electron diffraction (OTED) is widely used in the USSR for structure studies of finely dispersed crystalline substances including minerals (Pinsker 1949; Vainshtein 1956; Zvyagin 1967; Zvyagin and Vrublevskaya 1974; Imamov 1977; Imamov and Pinsher 1965; Imamov et al. 1982; Tsipursky and Drits 1977a, b, 1984; Tsipursky et al. 1978). In contrast to SAED, a great number of small particles contribute ot the formation of an OTED pattern. A significant contribution to the elaboration of OTED has been made by Pinsker (1949). Vainshtein (1956) has developed the theoretical grounds for the method and proved its high efficiency as an independent means of structure analyis for various objects. Zvyagin (1967) has revealed vast opportunities of the method in application to clays and other finely dispersed minerals with platy particles. He has shown that OTED can be used for identification of clay minerals, determination of unit-cell parameters, estimation of the degree of ordering, etc.
KeywordsClay Hydroxyl Silicate Hexagonal Dehydration
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