More accurate implementation of the transformation of the plane gnomostereographic projection

Abstract

When beginning the goniometric study of a crystal, the researcher cannot yet foresee how to appropriately orient the crystal on the goniometer so that, upon completion of the work, the symbol of the complex—the primary goal of any goniometric study—can be derived in the simplest way from the obtained diagram. From this it is clear that, in general, when the question of the correct orientation of a crystallographic complex is resolved, it is finally resolved only after completing a series of measurements, deriving the most significant faces, and calculating the planes—it becomes necessary to transform the projection plane, taking the main zone as the circumference of the projection.

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