Group-theoretical representation of holohedral forms of crystals by conjugated simple forms. Intergrowth of crystals

The schemes for division of holohedral simple forms of crystals into conjug ated simple forms are derived by decomposition of the symmetry group of the primitive sublattice into double cosets. The number of equivalently orient ed simple forms in the intergrowth of crystals, whose primitive space subla ttices are parallel to one another, is equal to the number of holohedral pe rmutational conjugated simple forms, which has the value 992 for all the 32 symmetry classes. (C) 2000 MAIK "Nauka/Interperiodica".