To verify the validity of the crystallite theory of amorphous models, the
phase of α –quartz has been chosen for representing the silica glass. The fullpattern
fitting of Rietveld method is used as a possible approach to produce
artificial amorphous-like powder diffraction patterns, also, the corresponding
distance correlation functions were calculated. From comparative study of the
characteristics of the obtained XRD patterns and real space correlation
functions, it is concluded that the silica glass can be modeled as a strained very
small crystals (crystallites) of a polymorph. This can be considered as a useful
application of Rietveld method and competent verification of the crystallite
theory of glass modeling.