Assessment of the Role of Carbonate–Bicarbonate Fluids in the Transport and Deposition of REEs in the Process of Ore Formation (Thermodynamic Modeling)

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Assessment of the Role of Carbonate–Bicarbonate Fluids in the Transport and Deposition of REEs in the Process of Ore Formation (Thermodynamic Modeling). / Shironosova, G. P.; Prokopyev, I. R.

In: Doklady Earth Sciences, Vol. 501, 12.2021, p. S13-S17.

Research output: Contribution to journal › Article › peer-review

BibTeX

@article{425cf59685c94765aa480aaafaad73b1,

title = "Assessment of the Role of Carbonate–Bicarbonate Fluids in the Transport and Deposition of REEs in the Process of Ore Formation (Thermodynamic Modeling)",

abstract = "Thermodynamic calculations on the impact of carbonate–bicarbonate fluids cooling from 500 to 100°C on a monazite + calcite association with a simultaneous decrease in pressure from 2000 to 125 bar are performed. It is shown that the REE carbonate–bicarbonate complexes gain importance only at low temperatures. In this case, the total concentration of lanthanides in the fluid turns out to be rather low. This indicates that, in the presence of even insignificant amounts of fluorine and calcium in the hydrothermal system, carbonate–bicarbonate fluids do not lead to the removal of REEs but contribute to their accumulation in the form of precipitating fluorocarbonates. Thus, the role of carbonate-bicarbonate hydrothermal fluids in the transport and deposition of rare earth elements has been assessed for the first time for a wide range of TP-parameters and for the entire series of lanthanides.",

keywords = "bastnasite, carbonate–bicarbonate complexes, lanthanides, monazite, parisite, thermodynamic modeling, xenotime",

author = "Shironosova, {G. P.} and Prokopyev, {I. R.}",

note = "Funding Information: This work was carried out under a State Assignment of Sobolev Institute of Geology and Мinerаlоgу, Siberian Branch, Russian Academy of Sciences, project no. 0330-2016-0002. The numerical experiments in alkaline systems were funded by the Russian Science Foundation, grant no. 19-77-10004. Publisher Copyright: {\textcopyright} 2021, Pleiades Publishing, Ltd.",

year = "2021",

month = dec,

doi = "10.1134/S1028334X2201007X",

language = "English",

volume = "501",

pages = "S13--S17",

journal = "Doklady Earth Sciences",

issn = "1028-334X",

publisher = "PLEIADES PUBLISHING INC",

}

RIS

TY - JOUR

T1 - Assessment of the Role of Carbonate–Bicarbonate Fluids in the Transport and Deposition of REEs in the Process of Ore Formation (Thermodynamic Modeling)

AU - Shironosova, G. P.

AU - Prokopyev, I. R.

N1 - Funding Information: This work was carried out under a State Assignment of Sobolev Institute of Geology and Мinerаlоgу, Siberian Branch, Russian Academy of Sciences, project no. 0330-2016-0002. The numerical experiments in alkaline systems were funded by the Russian Science Foundation, grant no. 19-77-10004. Publisher Copyright: © 2021, Pleiades Publishing, Ltd.

PY - 2021/12

Y1 - 2021/12

N2 - Thermodynamic calculations on the impact of carbonate–bicarbonate fluids cooling from 500 to 100°C on a monazite + calcite association with a simultaneous decrease in pressure from 2000 to 125 bar are performed. It is shown that the REE carbonate–bicarbonate complexes gain importance only at low temperatures. In this case, the total concentration of lanthanides in the fluid turns out to be rather low. This indicates that, in the presence of even insignificant amounts of fluorine and calcium in the hydrothermal system, carbonate–bicarbonate fluids do not lead to the removal of REEs but contribute to their accumulation in the form of precipitating fluorocarbonates. Thus, the role of carbonate-bicarbonate hydrothermal fluids in the transport and deposition of rare earth elements has been assessed for the first time for a wide range of TP-parameters and for the entire series of lanthanides.

AB - Thermodynamic calculations on the impact of carbonate–bicarbonate fluids cooling from 500 to 100°C on a monazite + calcite association with a simultaneous decrease in pressure from 2000 to 125 bar are performed. It is shown that the REE carbonate–bicarbonate complexes gain importance only at low temperatures. In this case, the total concentration of lanthanides in the fluid turns out to be rather low. This indicates that, in the presence of even insignificant amounts of fluorine and calcium in the hydrothermal system, carbonate–bicarbonate fluids do not lead to the removal of REEs but contribute to their accumulation in the form of precipitating fluorocarbonates. Thus, the role of carbonate-bicarbonate hydrothermal fluids in the transport and deposition of rare earth elements has been assessed for the first time for a wide range of TP-parameters and for the entire series of lanthanides.

KW - bastnasite

KW - carbonate–bicarbonate complexes

KW - lanthanides

KW - monazite

KW - parisite

KW - thermodynamic modeling

KW - xenotime

UR - http://www.scopus.com/inward/record.url?scp=85127326198&partnerID=8YFLogxK

UR - https://www.mendeley.com/catalogue/0aab8227-f81d-35ab-9d24-d52da9cba487/

U2 - 10.1134/S1028334X2201007X

DO - 10.1134/S1028334X2201007X

M3 - Article

AN - SCOPUS:85127326198

VL - 501

SP - S13-S17

JO - Doklady Earth Sciences

JF - Doklady Earth Sciences

SN - 1028-334X

ER -

ID: 35825689