The considered aspects of the relationship between mineralization and dykes of different composition, age, and origin allow us to consider dykes as reliable indicators for studying the direction of tectonomagmatic and metallogenic processes of different levels, for elucidating the patterns of localization of mineralization and its prediction, for deciphering the tectonic conditions of formation of ore bodies and peculiarities of geological development of certain regions, and in some cases dykes can be carriers of both syngenetic and epigenetic mineralization.