Инд. авторы:	Arefiev A.V., Shatskiy A., Podborodnikov I.V., Litasov K.D.
Заглавие:	Melting and subsolidus phase relations in the system K2CO3-MgCO3 at 3GPa
Библ. ссылка:	Arefiev A.V., Shatskiy A., Podborodnikov I.V., Litasov K.D. Melting and subsolidus phase relations in the system K2CO3-MgCO3 at 3GPa // High Pressure Research. - 2018. - Vol.38. - Iss. 4. - P.422-439. - ISSN 0895-7959. - EISSN 1477-2299.
Внешние системы:	DOI: 10.1080/08957959.2018.1541988; SCOPUS: 2-s2.0-85056151761; WoS: 000452040700006;
Реферат:	eng: As part of an investigation of carbonate systems under mantle pressures and temperatures, phase relations in the K2CO3-MgCO3 system have been studied at 3GPa and 800-1300 degrees C. Subsolidus assemblages comprise the stability fields of K2CO3+K2Mg(CO3)(2) and K2Mg(CO3)(2)+MgCO3 with the transition boundary near 50mol% K2CO3 in the system. The K2CO3-K2Mg(CO3)(2) eutectic is located at 840 degrees C and 52mol% K2CO3. The K2CO3 content in the melt coexisting with potassium carbonate increases to 85mol% as temperature increases to 1050 degrees C. K2CO3 remains solid up to 1250 and melts at 1300 degrees C. K2Mg(CO3)(2) melts incongruently at 890 degrees C to produce magnesite and a liquid containing 51mol% K2CO3. As temperature increases to 1300 degrees C, the K2CO3 content in the liquid coexisting with magnesite decreases to 27mol%.
Ключевые слова:	MODEL LHERZOLITE; CRYSTAL-STRUCTURE; GARNET LHERZOLITE; POTASSIUM CARBONATE; LITHOSPHERIC MANTLE; CARBONATITE METASOMATISM; FUSION CURVE; 6 GPA; carbonatite; shallow mantle; Raman; K2Mg(CO3)(2); K2CO3-MgCO3; HIGH-PRESSURE; FIBROUS DIAMONDS;
Издано:	2018
Физ. характеристика:	с.422-439