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Equilibria Equilibria E 4000Phase Equilibria in the Cu 2 S-ZnS-SnS 2 System. -The quasi-ternary title system is studied by DTA and X-ray phase and microstructure analysis methods. The liquidus surface projection and the 670 K isothermal section are constructed. The existence of the quaternary compound Cu2ZnSn3S8 is detected and that of Cu2ZnSnS8 is confirmed. The compounds are analogous to the natural minerals rhodostannine, Cu 2 FeSn 3 S 8 , and stannine, Cu 2 FeSnS 8 , respectively. Their tetragonal lattice parameters are given. -(OLEKSEYUK, I. D.; DUDCHAK, I. V.; PISKACH*, L. V.; J. Alloys Compd. 368 (2004) 1-2, 135-143; Volyn State Univ., Lutsk 43009, Ukraine; Eng.) -Schramke 23-019

Equilibria Equilibria E 4000 Phase Equilibria in the Cu 2 SnSe 3 -SnSe 2 -ZnSe System. -(DUDCHAK, I. V.; PISKACH*, L. V.; J. Alloys Compd. 351 (2003) 1-2, 145-150; Volyn State Univ., Lutsk 43009, Ukraine; Eng.) -Schramke 41-021