The Re-Mo-S system: New data on phase relations between 400 and 1200 °C

0350012 - GLÚ 2011 RIV DE eng J - Journal Article
Drábek, M. - Rieder, M. - Böhmová, Vlasta
The Re-Mo-S system: New data on phase relations between 400 and 1200 °C.
European Journal of Mineralogy. Roč. 22, č. 4 (2010), s. 479-484. ISSN 0935-1221. E-ISSN 1617-4011
Institutional research plan: CEZ:AV0Z30130516
Keywords : phase relations * Re–Mo–S system * molybdenite * rheniite * Re * Mo * S
Subject RIV: DB - Geology ; Mineralogy
Impact factor: 1.469, year: 2010

Phase relations in the Re–Mo–S system were studied by the technique of evacuated silica tubes in the temperature range of 400–1200 °C. At 1000 °C, the following assemblages are stable: MoS₂ + ReS₂ + S₂(v); MoS₂ + ReS₂ + (Re,Mo)_ss + v; MoS₂ + Mo₂S₃ + (Re,Mo)_ss + v; Mo₂S₃ + χ + (Re, Mo)_ss + v, Mo₂S₃ + χ + (Mo, Re)_ss + v. Experiments aimed at the determination of the MoS₂-ReS₂ solid state solubility reveal an asymmetrical behaviour: molybdenite dissolves 2.7(9) wt% Re at 1000 °C, 2.6(4) wt% Re at 800 °C, and 2.2(6) wt% Re at 400 °C, whereas ReS₂ shows negligible Mo contents at all temperatures. The experimental solubility of ReS₂ in MoS₂ far exceeds Re contents in natural molybdenite, for which literature reports hundreds to thousands ppm.
Permanent Link: http://hdl.handle.net/11104/0190116