One of the essential questions arising in the analysis of ore field structures is to establish the measure and nature of the influence of the specific physical and mechanical properties of the host rocks on the shape and spatial position of ore objects. Interesting materials on this iss. were obtained during the study of deposits of Suraizskoe crustalene field of the circumpolar Urals. A great role belongs here to the type of structures of unlensing developed in the host rocks.