The XRD study of chromites modifications: A semi-qualitative approach *M. Rahgoshay, H. Shafaii Moghadam

In this study we attempt to distinguish the relationship between the altered chromites and non-altered ones by X-ray diffraction. For the purpose of this study, an assemblage of altered/non-altered and deformed/non-deformed ophiolitic chromites has been collected and analyzied. Sharp and doubled peaks are resulted from non-altered and altered samples respectively. By using XRD studies, the parameter “a” from chromite grains has been calculated and the composition of same samples, obtaining from microprobe analysis, have given a chart that is useful for semi-qualitative recalculation of chromites composition.