Abstract
X-ray diffraction experiment of a granular glauconitic clay and the computer simulation of the X-ray diffraction line profile of the clays from the Minamishiraoi Kuroko-type deposit, southwestern Hokkaido, Japan, were carried out to elucidate its mixed layer structure. The mixed layer structure which shows an intermediateproperty of glauconite and smectite were evaluated to be of a random-type interstratification somewhat deviated from random interstratification towards the direction of segregation structure of glauconite and smectite, through comparison of the measured and the calculated X-ray diffraction line profiles.
It is suggested that the comparisons of the relative intensity ratio of the saddle peak and the (001) reflection corresponding to smectite, and the X-ray diffraction pattern between the measured and calculated ones, can be used efficiently as one of the methods to evaluate the mixed layer structure of glauconite-smectite series mineral in the clay.
