Symbolical description of structural types of crystals

The brief review of research papers about crystal chemical peculiarities of the substances building and describing methods of the structural crystal types has been presented. The universal system of the symbol description of the crystal structural types and modular structures by structural codes has been moved. The descriptions of geometry and topology of the base module of the structural type are the main part of the structural code. Structural codes are intended for identification of the structural type and its systematization, formalized topologic transformation of the structures by using of relevant net of the genetic correlations between its, clarification the new correlations and novel module for modular design, for receiving and description of the corresponding modular structures.