Thermodynamic modeling of REE behavior in oxidized hydrothermal fluids of high sulfate sulfur concentrations

G. P. Shironosova, G. R. Kolonin, A. A. Borovikov, A. S. Borisenko

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)855-859
Number of pages5
JournalDoklady Earth Sciences
Volume469
Issue number2
DOIs
Publication statusPublished - 1 Aug 2016
Externally publishedYes

Fingerprint Dive into the research topics of 'Thermodynamic modeling of REE behavior in oxidized hydrothermal fluids of high sulfate sulfur concentrations'. Together they form a unique fingerprint.

Cite this