Thermodynamic modeling of REE behavior in oxidized hydrothermal fluids of high sulfate sulfur concentrations. / Shironosova, G. P.; Kolonin, G. R.; Borovikov, A. A. et al.
In: Doklady Earth Sciences, Vol. 469, No. 2, 01.08.2016, p. 855-859.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Thermodynamic modeling of REE behavior in oxidized hydrothermal fluids of high sulfate sulfur concentrations
AU - Shironosova, G. P.
AU - Kolonin, G. R.
AU - Borovikov, A. A.
AU - Borisenko, A. S.
PY - 2016/8/1
Y1 - 2016/8/1
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=84984924016&partnerID=8YFLogxK
U2 - 10.1134/S1028334X16080158
DO - 10.1134/S1028334X16080158
M3 - Article
AN - SCOPUS:84984924016
VL - 469
SP - 855
EP - 859
JO - Doklady Earth Sciences
JF - Doklady Earth Sciences
SN - 1028-334X
IS - 2
ER -
ID: 25472167