Abstract
Distribution and abundance of rare earth elements in Volchansky Spa of CO2-rich mineral waters and REE fractionation during the formation of Fe2O3 precipitates on the Sakhalin Island (the Far East of Russia) were studied. The main common features of waters are Na-Cl-HCO3 hydrochemical type, high total dissolved solids (5.4-6.5 g/L), a slightly alkaline pH (6.4-6.5), and reduced conditions (Eh from -181 to -110 mV). The NASC-normalized patterns of groundwaters are characterized by HREE enrichments, negative Ce and positive Eu anomalies. The explanation for the HREE-enriched pattern is that the HREEs form stronger complexes with ligands in solution than do the LREE. Mineral precipitates are presented by Fe-oxides and ΣREE concentrations significantly higher compared to those of the original waters. The slight negative Ce and positive Eu anomalies are also found in the precipitates and these values are very similar to those of the original CO2-rich waters. It is point out that mineral precipitates are unfractionated or slightly fractionated in comparison to the mineral waters.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: IOP Conference Series: Earth and Environmental Science
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
