The simplest course of operations in crystallographic research
Abstract
Difficulties in crystallographic practice include difficulties in compiling tables of crystal chemical analysis and the actual research techniques. The author formulates the course of operations necessary for a complete geometric study of crystals of a single substance, assuming that the goniometer has been calibrated and satisfies the conditions stated above (see the article). Before each individual series of measurements, the zero setting should be established. The first measurement, leading to the construction of a stereographic projection diagram, serves for an initial examination of the crystal and for the selection of the principal faces. If the substance has already been described, then often this first measurement makes it possible to derive the correct orientation and the corresponding symbol of the complex, and therefore toidentify the substance from the tables.
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