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Phase equilibria in the KFeS2-Fe-S system at 300-600 °C and bartonite stabilityстатья
Статья опубликована в высокорейтинговом журнале
Статья опубликована в журнале из списка Web of Science и/или Scopus- Авторы: Osadchii V.O., Voronin M.V., Baranov A.V.
- Журнал: Contributions to Mineralogy and Petrology
- Том: 173
- Номер: 44
- Год издания: 2018
- Издательство: Springer Verlag
- Местоположение издательства: Germany
- DOI: 10.1007/s00410-018-1464-3
- Аннотация: The article deals with phase relations in the KFeS2-Fe-S system studied by the dry synthesis method in the range of 300-600°C and at a pressure of 1 bar. At the temperature below 513 ±3°C pyrite coexists with rasvumite and there are pyrite – rasvumite – KFeS2 and pyrite – rasvumite – pyrrhotite equilibria established. Above 513 ±3°C pyrite and rasvumite react to form KFeS2 and pyrrhotite, limiting the pyrite-rasvumite association to temperatures below this in nature. The experiments also outline the compositional stability range of the copper-free analog of murunskite (KxFe2-yS2) and suggest that mineral called bartonite is not stable in the Cl-free system, at least at atmospheric pressure and the temperature in the experiments. Chlorbartonite could be easily produced after adding KCl in the experiment. Possible parageneses in the quaternary K-Fe-S-Cl system were described based on the data obtained in this research and found in the previous studies. The factors affecting the formation of potassium-iron sulfides in nature were discussed.
- Добавил в систему: Осадчий Валентин Олегович