PHASE EQUILIBRIUM IN QUAZITRUARY PbS-Cu₂S-La₂S₃ SYSTEM

Phase equilibrium in quazitruary system PbS-Cu₂ S-La₂S₃ on polytermic sections
CuLaS₂–PbS, Cu₂S–PbCuLaS₃, PbLa₂S₄–PbCuLaS₃, CuLaS₂–PbLa₂S₄ has been investigated.
PbCuLaS₃ (which has crystal structure of orthorhombic singony space group Pmn21) structural type of mineral burnonit PbCuSbS₃ with parameters of simple cell has been synthesized for the first time.