Phase relations in Na2MoO4-AmOo4-Zr (MoO4)2 (A = Mn, Zn)systems

System Na 2MoO 4-AMoO 4-Zr(MoO 4) 2 (A=Mn, Zn) were studied by X-ray phase analysis in the subsolidus area. Quasi-binary sections were identified and triangulation was carried out. The formation of triple molybdates was found out for the first time in the system: S 1 (1:3:1) - Na 2Mn 3Zr(MoO 4) 6; S 2 (1:2:1) -Na 2Zn 2Zr(MoO 4) 5.