On stimuli and mechanisms of crystallization

The crystallographic analysis of a series of compounds with complex composition was carried out from mechanical wave nature of the crystalline state and, as a consequence, a preferential energetic stability of the atomic groups with the local ordering of the atomic positions (point and translational symmetry). Such ordered atomic groups were shown to be nuclei of the crystal structure resulting from the coherent assemblage of the groups. A predominance of monoclinic and orthorhombic crystals in nature is explained by equally probable nuclei formation of right and left atomic configurations as well as the presence of glide plane operations for the mutual packing.