More accurate implementation of the transformation of the gnomostereographic projection plane

Abstract

When starting a goniometric study of a crystal, the researcher cannot yet foresee how the crystal will have to be expediently oriented on the goniometer in order to, at the end of the work, in the simplest way, from the resulting diagram, derive the symbol of the complex—the first goal of any goniometric study. From here it is clear that in general, when the question of the correct installation of the crystallographic complex is resolved, it is finally resolved only after completing a series of measurements, deducing the most significant faces and calculating the planes—it is necessary to transform the projection plane, taking the main belt as the projection circle.