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Vol 4 No 5
Pages:
325-344
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RUS
Research article
Articles

The simplest course of crystallographic research operations

Authors:
E. S. Fedorov
Date submitted:
1913-06-16
Date accepted:
1913-08-13
Date published:
1913-12-01

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 one substance, assuming that the goniometer is calibrated and satisfies the conditions stated above (see article). Before each individual series of measurements, one should start by setting the zero. The first measurement, leading to the compilation of a diagram in stereographic projection, serves for a closer acquaintance with the crystal and the selection of the main faces. If the substance has already been described, then often this first measurement makes it possible to derive the correct installation and the associated symbol of the complex, and therefore to determine the substance from the tables.

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