| Инд. авторы: | Shironosova G.P., Kolonin G.R., Borovikov A.A., Borisenko A.S. |
| Заглавие: | Thermodynamic modeling of REE behavior in oxidized hydrothermal fluids of high sulfate sulfur concentrations |
| Библ. ссылка: | Shironosova G.P., Kolonin G.R., Borovikov A.A., Borisenko A.S. Thermodynamic modeling of REE behavior in oxidized hydrothermal fluids of high sulfate sulfur concentrations // Doklady Earth Sciences. - 2016. - Vol.469. - Iss. 2. - P.855-859. - ISSN 1028-334X. - EISSN 1531-8354. |
| Внешние системы: | DOI: 10.1134/S1028334X16080158; SCOPUS: 2-s2.0-84984924016; WoS: 000383030600018; |
| Реферат: | eng: Thermodynamic calculations using the HCh software were made for mineral equilibriums including REEs in the fluoride–sulfide–chloride–carbonate–sulfate–system in the presence of Na, Ca, and P with fluids of various acidities–alkalinities [11]. The obtained thermodynamic characteristics of thenardite allowed us to carry out the calculations for this phase under complicated hydrothermal conditions simulating the presence of oxidized fluids at 500–100°C and 2000–125 bar. Among other solid phases, REEs–fluorite, monazite, and REE–F–apatite were formed as CaF2–(Ln,Y)F3, LnPO4, and Ca5(PO4)3F–(Ln,Y)3(PO4)3 ideal solid solutions, respectively, where Ln is La, Ce, Pr, Nd, Sm, Eu, and Gd. Xenotime, anhydrite, elemental sulfur, and calcite were found as well. © 2016, Pleiades Publishing, Ltd. |
| Ключевые слова: | Thermodynamic model; Thermodynamic characteristics; Thermodynamic calculations; Sulfate sulfur; Solid phasis; Hydrothermal fluids; Hydrothermal conditions; Thermodynamics; Sulfur compounds; Sulfur; Phosphate minerals; Fluoride minerals; Chloride minerals; Calcium; Elemental sulfur; |
| Издано: | 2016 |
| Физ. характеристика: | с.855-859 |