In the south of the Far East of Russia, a new source of critically important metals (titanium and iron) has been discovered—ilmenite-titanomagnetite ores of mafic-ultrabasic rocks of the Sikhote-Alin orogenic belt. The results of studying the opening of the ilmenite-titanomagnetite ores of the ultrabasic rocks occurring in the Koksharovsky massif conducted with using both ammonium hydrofluoride NH 4 HF 2 and its mixture with ammonium sulfate (NH 4 ) 2 SO 4 are presented. The usage of mixture of these reagents has proved to facilitate better opening of titanium-containing mineral raw materials. The experience of deep processing of ilmenite-titanomagnetite ores will allow outlining the ways for the industrial development of complex deposits of the Far East.