The structure of the Upper-Enashimo ore cluster is a lenticular-plate melange of granite and schist composition with overthrust morphology. Regularities of location, morphology, and orientation of orebodies are recognized. The ore-bearing zonal metasomatites are situated in the melange matrix the Tyryda dynamometamorphic complex of the post-Vendian (Late-Paleozoic) age. The metasomatites and melange are mutually crossed and synchronous. This post-Baikalian (Hercynian) mineralization is supposed to be of metamorphogenic genesis.
