Banded chalkopyrite-pyritic ore from Molodyezhnoe deposit has been undergone effect of spherically gathering shock wave, giving pressure equivalent to one in upper earth’s mantle. At such conditions processes of melting, dissociation and following condensation and crystallization of sulphide and silicate melt are possible. The time when sample get cold is sufficient for unbalanced liquation of sulphide part of melt takes place. In the process part of sulphur has been removed from local drop of sulphide melt and pyrrhotite came into existence. In initial rock it was absent.