As a method of structure analysis, electron diffraction has its own spe- cial possibilities and advantages in comparison to the X -ray method for the study of finely dispersed minerals with layer or pseudolayer structures. How- ever, possibly because of the prior existence of the X-ray method, which found universal application in different fields and attracted the main efforts of spe- cialists, electron diffraction has been unevenly disseminated and developed in different countries. In particular, the oblique texture method, which gives very complete and detailed structural information, has...