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The system Na2CO3–MgCO3 at 3 GPa. / Podborodnikov, Ivan V.; Shatskiy, Anton; Arefiev, Anton V. et al.

In: High Pressure Research, Vol. 38, No. 3, 03.07.2018, p. 281-292.

Research output: Contribution to journalArticlepeer-review

Harvard

Podborodnikov, IV, Shatskiy, A, Arefiev, AV, Chanyshev, AD & Litasov, KD 2018, 'The system Na2CO3–MgCO3 at 3 GPa', High Pressure Research, vol. 38, no. 3, pp. 281-292. https://doi.org/10.1080/08957959.2018.1488972

APA

Podborodnikov, I. V., Shatskiy, A., Arefiev, A. V., Chanyshev, A. D., & Litasov, K. D. (2018). The system Na2CO3–MgCO3 at 3 GPa. High Pressure Research, 38(3), 281-292. https://doi.org/10.1080/08957959.2018.1488972

Vancouver

Podborodnikov IV, Shatskiy A, Arefiev AV, Chanyshev AD, Litasov KD. The system Na2CO3–MgCO3 at 3 GPa. High Pressure Research. 2018 Jul 3;38(3):281-292. doi: 10.1080/08957959.2018.1488972

Author

Podborodnikov, Ivan V. ; Shatskiy, Anton ; Arefiev, Anton V. et al. / The system Na2CO3–MgCO3 at 3 GPa. In: High Pressure Research. 2018 ; Vol. 38, No. 3. pp. 281-292.

BibTeX

@article{2f206ff67a494f29bc2b7e628aab2edd,
title = "The system Na2CO3–MgCO3 at 3 GPa",
abstract = "It was suggested that Na–Mg carbonates might play a substantial role in mantle metasomatic processes through lowering melting temperatures of mantle peridotites. Taking into account that natrite, Na2CO3, eitelite, Na2Mg(CO3)2, and magnesite, MgCO3, have been recently reported from xenoliths of shallow mantle (110–115 km) origin, we performed experiments on phase relations in the system Na2CO3–MgCO3 at 3 GPa and 800–1250°C. We found that the subsolidus assemblages comprise the stability fields of Na-carbonate + eitelite and eitelite + magnesite with the transition boundary at 50 mol% Na2CO3. The Na-carbonate–eitelite eutectic was established at 900°C and 69 mol% Na2CO3. Eitelite melts incongruently to magnesite and a liquid containing about 55 mol% Na2CO3 at 925 ± 25 °C. At 1050 °C, the liquid, coexisting with Na-carbonate, contains 86–88 mol% Na2CO3. Melting point of Na2CO3 was established at 1175 ± 25 °C. The Na2CO3 content in the liquid coexisting with magnesite decreases to 31 mol% as temperature increases to 1250°C. According to our data, the Na- and Mg-rich carbonate melt, which is more alkaline than eitelite, can be stable at the P–T conditions of the shallow lithospheric mantle with thermal gradient of 45 mW/m2 corresponding to temperature of 900 °C at 3 GPa.",
keywords = "carbonatite, eitelite, NaCO–MgCO, Raman, shallow mantle, PETROGENESIS, HIGH-PRESSURE, ALKALI, CARBONATED ECLOGITE, DIAMOND, 6 GPA, PERIDOTITE, SOLIDUS, Na2CO3-MgCO3, PHASE-RELATIONS, RICH",
author = "Podborodnikov, {Ivan V.} and Anton Shatskiy and Arefiev, {Anton V.} and Chanyshev, {Artem D.} and Litasov, {Konstantin D.}",
year = "2018",
month = jul,
day = "3",
doi = "10.1080/08957959.2018.1488972",
language = "English",
volume = "38",
pages = "281--292",
journal = "High Pressure Research",
issn = "0895-7959",
publisher = "Taylor and Francis Ltd.",
number = "3",

}

RIS

TY - JOUR

T1 - The system Na2CO3–MgCO3 at 3 GPa

AU - Podborodnikov, Ivan V.

AU - Shatskiy, Anton

AU - Arefiev, Anton V.

AU - Chanyshev, Artem D.

AU - Litasov, Konstantin D.

PY - 2018/7/3

Y1 - 2018/7/3

N2 - It was suggested that Na–Mg carbonates might play a substantial role in mantle metasomatic processes through lowering melting temperatures of mantle peridotites. Taking into account that natrite, Na2CO3, eitelite, Na2Mg(CO3)2, and magnesite, MgCO3, have been recently reported from xenoliths of shallow mantle (110–115 km) origin, we performed experiments on phase relations in the system Na2CO3–MgCO3 at 3 GPa and 800–1250°C. We found that the subsolidus assemblages comprise the stability fields of Na-carbonate + eitelite and eitelite + magnesite with the transition boundary at 50 mol% Na2CO3. The Na-carbonate–eitelite eutectic was established at 900°C and 69 mol% Na2CO3. Eitelite melts incongruently to magnesite and a liquid containing about 55 mol% Na2CO3 at 925 ± 25 °C. At 1050 °C, the liquid, coexisting with Na-carbonate, contains 86–88 mol% Na2CO3. Melting point of Na2CO3 was established at 1175 ± 25 °C. The Na2CO3 content in the liquid coexisting with magnesite decreases to 31 mol% as temperature increases to 1250°C. According to our data, the Na- and Mg-rich carbonate melt, which is more alkaline than eitelite, can be stable at the P–T conditions of the shallow lithospheric mantle with thermal gradient of 45 mW/m2 corresponding to temperature of 900 °C at 3 GPa.

AB - It was suggested that Na–Mg carbonates might play a substantial role in mantle metasomatic processes through lowering melting temperatures of mantle peridotites. Taking into account that natrite, Na2CO3, eitelite, Na2Mg(CO3)2, and magnesite, MgCO3, have been recently reported from xenoliths of shallow mantle (110–115 km) origin, we performed experiments on phase relations in the system Na2CO3–MgCO3 at 3 GPa and 800–1250°C. We found that the subsolidus assemblages comprise the stability fields of Na-carbonate + eitelite and eitelite + magnesite with the transition boundary at 50 mol% Na2CO3. The Na-carbonate–eitelite eutectic was established at 900°C and 69 mol% Na2CO3. Eitelite melts incongruently to magnesite and a liquid containing about 55 mol% Na2CO3 at 925 ± 25 °C. At 1050 °C, the liquid, coexisting with Na-carbonate, contains 86–88 mol% Na2CO3. Melting point of Na2CO3 was established at 1175 ± 25 °C. The Na2CO3 content in the liquid coexisting with magnesite decreases to 31 mol% as temperature increases to 1250°C. According to our data, the Na- and Mg-rich carbonate melt, which is more alkaline than eitelite, can be stable at the P–T conditions of the shallow lithospheric mantle with thermal gradient of 45 mW/m2 corresponding to temperature of 900 °C at 3 GPa.

KW - carbonatite

KW - eitelite

KW - NaCO–MgCO

KW - Raman

KW - shallow mantle

KW - PETROGENESIS

KW - HIGH-PRESSURE

KW - ALKALI

KW - CARBONATED ECLOGITE

KW - DIAMOND

KW - 6 GPA

KW - PERIDOTITE

KW - SOLIDUS

KW - Na2CO3-MgCO3

KW - PHASE-RELATIONS

KW - RICH

UR - http://www.scopus.com/inward/record.url?scp=85048760254&partnerID=8YFLogxK

U2 - 10.1080/08957959.2018.1488972

DO - 10.1080/08957959.2018.1488972

M3 - Article

AN - SCOPUS:85048760254

VL - 38

SP - 281

EP - 292

JO - High Pressure Research

JF - High Pressure Research

SN - 0895-7959

IS - 3

ER -

ID: 14102316