• Sergey S. Berezin Lecturer, Department of General and Inorganic Chemistry, Voronezh State University; e-mail:
  • Alexander Y. Zavrazhnov Dr. Sci. (Chem.), Department of General and Inorganic Chemistry, Voronezh State University; e-mail:
  • Alexander V. Naumov Cand. Sci. (Chem.), Researcher, Department of General and Inorganic Chemistry; e-mail:
  • Vyacheslav V. Volkov Cand. Sci. (Chem.), Leading Researcher, Institute of General and Inorganic Chemistry; e-mail:
  • Anastasiya V. Sergeeva Cand. Sci. (Chem.), Senior Researcher, Institute of Volcanology and Seismology, Far East Branch, Russian Academy of Sciences, Petropavlovsk-Kamchatski; e-mail:
  • Alexandra P. Spesivtseva 4-y. student, Department of General and Inorganic Chemistry; e-mail:


A new approach to a single crystals growth of the iron sulphide phases of definite structure and nonstoichiometry is developed and applied. This approach is based on the iron sulphides recrystallization from the solutions of these sulphides in the iron (II) halide melts at the fixed vapor pressure of sulphur. The recrystallization procedure is carried out in a closed non-isothermal system: the charge – the weight of iron sulphide and the solvent – the weight of iron (II) halide are located in the “hot” end of the silica ampoule at the temperature T2 and the source of sulphur (pure S) is concentrated in the opposite “cold” end of ampoule. The vapor pressure of sulphur is controlled by the temperature of the “cold” zone (T1). In the course of each grown experiment the temperature T1 was unvaried (so the pressure of sulphur was unvaried too) and the temperature of the “hot” zone T2 was decreased slowly (usually from 690 to 660 °C). Pyrite single crystals was grown using the chloride and the bromide melts as the solvents when the vapor pressure of sulphur vapor was in the range from 0.42 to 9.4 bar. The lattice constant “a” was equal to 0.5412-0.5413 nm. The mixture of pyrite (b-FeS2) and trigonal phase of Fe1-xS was detected when the vapor pressure of sulphur was smaller than 0.25 bar. In the experiments with the iodide melts the almost complete oxidation of ion I- (to I2) by sulphur and the crystallization of iron sulphides were found. This paper proposes a mechanism for the generation of the iron sulphide phases from the iron halide melts.


This work was supported by the Russian Foundation for Basic Research (project no. 15-52-61017 Egipet_a).

Keywords: iron sulphides, pyrite, pyrrhotite, iron halide, recrystallization


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1. Developments in Economic Geology, 30 Precambrian Ore Deposits of the East European & Siberian Cratons / Ed. by D. V. Rundquist, C. Gillen. Elsevier, 1997, 457 p.
2. Wozniakiewicz P. J., Ishii H. A. Meteoritics & Planetary Science, 2011, vol. 46, no. 7. P. 1007. DOI: 10.1111/j.1945-5100.2011.01206
3. Meng L, Liu Y. H, Tian L. J. Cryst. Growth, 2003, vol. 253, no. 1–4, p. 530. DOI: 10.1016/S0022-0248(03)01040-6
4. Milichko V. A., Shalin A. S. Advances in Physical Sciences (Physics-Uspekhi), 2016, vol. 186, no. 8, p. 801. DOI: 10.3367/UFNr.2016.02.037703. (in Russian)
5. Ellmer K. Hopfner C. Philosophical Magazine A, 1997, vol. 75:4, p. 1129. DOI: 10.1080/01418619708214015
6. Ennaoui A., Fiechter S., Pettenkofer Ch., et al. Solar Energy Materials and Solar Cells, 1993, vol. 29, p. 289. DOI: 10.1016/0927-0248(93)90095-K
7. Kruse O. American Mineralogist, 1990, vol. 75, p. 755.
8. Gronvold F., Stolen S. J. Chem. Thermodyn., 1992, vol. 24, p. 913.
9. Diagrams of Binary and Multicomponent Systems Based on Iron / Ed. by O. A. Bannykh, M. E. Drits. Moscow, Metallurgiya Publ., 1986, 440 p. (in Russian)
10. Hyde B., O'Keffee M., et al. Aust. J. Chem, 1996, vol. 49, p. 867. DOI: 10.1071/CH9960867
11. Bryndzia L. T., Scott S. D., Spry P. G. Econ Geol, 1988, vol. 83, p. 1193.
12. Bennett C. E. G., Graham J., Thornber M. R. Am Mineral, 1972, vol. 57, p. 445.
13. Prokin A. N. Some Questions of Physical Chemistry of Synthetic and Natural Iron Disulfide. Diss. … cand. chem. sci. Voronezh, 1980, 225 p. (in Russian)
14. Minerals: Their Constitution and Origin. Ed. by H.-R. Wenk, A. Bulakh. Edinburgh Building, Cambridge, 2004, 647 p.
15. Nielsen H. P., Frandsen F. J. Progress in Energy and Combustion Science, 2000, vol. 26, iss. 3, p. 283.
16. Tronina E. M., et al. Vestnik of Pushkin Leningrad State University. Series. Physical. and Chemical, 1969, no. 10, p. 83. (in Russian)
17. Fleet M. E. Acta Crystallographica B, 1971, vol. 27, p. 1864.
18. Lidin R. A., Andreyeva L. L., Molochko V. A. Handbook of Inorganic Chemistry. Moscow, Chimiya Publ., 1987, 320 p. (in Russian)
19. Zavrazhnov A. Yu., Naumov A. V., Anorov P. V., et al. Inorganic Materials, 2006, vol. 42, no. 12, p. 1294. DOI: 10.1134/S0020168506120028
How to Cite
Berezin, S. S., Zavrazhnov, A. Y., Naumov, A. V., Volkov, V. V., Sergeeva, A. V., & Spesivtseva, A. P. (2017). THE PRECIPITATION OF IRON SULPHIDES BY THE CRYSTALLIZATION OF HALIDE MELTS IN SULPHUR ATMOSPHERE. Kondensirovannye Sredy I Mezhfaznye Granitsy = Condensed Matter and Interphases, 19(1), 27-36.