Тип публикации: доклад, тезисы доклада, статья из сборника материалов конференций
Конференция: 10th International Congress for Applied Mineralogy (ICAM); Trondheim; Trondheim
Год издания: 2012
Ключевые слова: szomolnokite, pyrrhotite, cation vacancies, crystal structure, phase composition
Аннотация: Using the method of dry synthesis in vacuum the iron sulfides with S/Fe ratio from 1.0 upto 2.0 have been obtained. After keeping the samples under atmospheric influence in almost isothermal conditions (~25°С) for 29 years, the samples with distinct properties from the original ones have been obtained. Thus, the pyrrhotites were chПоказать полностьюanged from the metastable phase into the stable one. The crystal structure and the phase structure of iron sulfides, thus obtained, were studied using the X-ray analysis method. The specimens obtained after air storage contained goethite FeO(HO), szomolnokite Fe(SO4)(H2O), pyrite FeS2, troilite FeS, and pyrrhotite with the compositions Fe0.975S and Fe0.875S. The diagram of the specimens' phase composition with different S/Fe ratios after long-time isothermal air storage is offered. Dependence of the samples with the phase compositions Fe(SO4)(H2O) and Fe0.875S has been determined.
Журнал: Proceedings of the 10th International Congress for Applied Mineralogy (ICAM)
Номера страниц: 463-469
Издатель: Springer, Berlin, Heidelberg