Geochemistry of Rare Earth Elements in Sinegorsky Spa of CO2-rich Mineral Water (Sakhalin Island, Far Eastern Russia)

Chelnokov George, Bragin Ivan, Kharitonova Natalia, Chelnokova Berta, Aseeva Anna, Bushkareva Kseniya

2018

Abstract

Distribution and abundance of rare earth elements for Sinegorsky Spa of CO2-rich mineral waters and their mineral precipitates on the Sakhalin Island (the Far East of Russia) were studied. The main common features of waters from six boreholes are Na-Cl-HCO3 hydrochemical type, high total dissolved solids (16.2–23.1 g/L), a slightly alkaline pH (6.2–7.7), and Eh (-181 to 63 mV). The NASC-normalized patterns of all groundwaters are characterized by HREE enrichments and positive Eu anomalies, whereas some fluids are characterized by positive Ce anomaly and others have moderate negative Ce anomaly. The distinct positive Eu/Eu* in mineral waters indicates the nature of their water-rock interaction whereas Ce anomaly could be the result of the difference in groundwater circulation. Mineral precipitates are enriched with light REE and show a negative Eu/Eu* and positive Ce/Ce* anomalies which indicate redox controlled processes. The main processes controlling dissolved trace element behaviour in water were established. It is argued that bicarbonate ion-pairs can also play an important role for the solution chemistry of HREE which explains the significant relative fractionation between REE observed in CO2-rich water. This work was supported by grants from Russian Science Foundation (RSF), project № 18-17-00245.

Paper Citation

in Harvard Style

George C., Ivan B., Natalia K., Berta C., Anna A. and Kseniya B. (2018). Geochemistry of Rare Earth Elements in Sinegorsky Spa of CO2-rich Mineral Water (Sakhalin Island, Far Eastern Russia).In Proceedings of the International Workshop on Environment and Geoscience - Volume 1: IWEG, ISBN 978-989-758-342-1, pages 267-272. DOI: 10.5220/0007429002670272

in Bibtex Style

@conference{iweg18,
author={Chelnokov George and Bragin Ivan and Kharitonova Natalia and Chelnokova Berta and Aseeva Anna and Bushkareva Kseniya},
title={Geochemistry of Rare Earth Elements in Sinegorsky Spa of CO2-rich Mineral Water (Sakhalin Island, Far Eastern Russia)},
booktitle={Proceedings of the International Workshop on Environment and Geoscience - Volume 1: IWEG,},
year={2018},
pages={267-272},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0007429002670272},
isbn={978-989-758-342-1},
}

in EndNote Style

TY - CONF

JO - Proceedings of the International Workshop on Environment and Geoscience - Volume 1: IWEG,
TI - Geochemistry of Rare Earth Elements in Sinegorsky Spa of CO2-rich Mineral Water (Sakhalin Island, Far Eastern Russia)
SN - 978-989-758-342-1
AU - George C.
AU - Ivan B.
AU - Natalia K.
AU - Berta C.
AU - Anna A.
AU - Kseniya B.
PY - 2018
SP - 267
EP - 272
DO - 10.5220/0007429002670272