| Structure Defects in some Phyllosilicates |
s. BHATTACHERJEE, A. K. DE AND G. B. MITRA
Pages : 86-89
DOI : 10.1080/0371750X.1983.10822638 |
| Abstract |
| Phyllitous clay minerals, in general, contain two specific structure
defects, viz. layer shift and variability of interlayer spacings. Methods
developed earlier for quantitative studies of these defects in kaolinites
and halloysites and their dehydration products were based on the variance
of the single reflection. These techniques were, however, based
on the assumption that the principle of additivity of variances due to
defect and particle size profiles was valid. In the present study, the
total variance of the line has been calculated, using the principle of
convolution directly from the Fourier co-efficients of the diffraction
profile which is assumed to be the result of convolution of the particle
size and defect profiles. By this new approach, the previous techniques
have been considerably modified with several new terms appearing in
the final expressions. These modified techniques have been applied to
study the layer disorders quantitatively in several phyllosilicates and their dehydration products. The results of the investigations reveal
many interesting and useful information regarding structural transformation
in these minerals. |
| Full text : Subscribe to Download Full Text |
| [Go Back] |
|
