Инд. авторы:	Ragozin A.L., Palyanov Y.N., Zedgenizov D.A., Kalinin A.A, Shatsky V.S.
Заглавие:	Homogenization of carbonate-bearing microinclusions in diamond at P–T parameters of the upper mantle
Библ. ссылка:	Ragozin A.L., Palyanov Y.N., Zedgenizov D.A., Kalinin A.A, Shatsky V.S. Homogenization of carbonate-bearing microinclusions in diamond at P–T parameters of the upper mantle // Doklady Earth Sciences. - 2016. - Vol.470. - Iss. 2. - P.1042-1045. - ISSN 1028-334X. - EISSN 1531-8354.
Внешние системы:	DOI: 10.1134/S1028334X16100056; SCOPUS: 2-s2.0-84994234776; WoS: 000387334700012;
Реферат:	eng: The staged high-pressure annealing of natural cubic diamonds with numerous melt microinclusions from the Internatsional’naya kimberlite pipe was studied experimentally. The results mainly show that the carbonate phases, the daughter phases in partially crystallized microinclusions in diamonds, may undergo phase transformations under the mantle P–T conditions. Most likely, partial melting and further dissolution of dolomite in the carbonate–silicate melt (homogenization of inclusions) occur in inclusions. The experimental data on the staged high-pressure annealing of diamonds with melt microinclusions allow us to estimate the temperature of their homogenization as 1400–1500°C. Thus, cubic diamonds from the Internatsional’naya pipe could have been formed under quite high temperatures corresponding to the lithosphere/asthenosphere boundary. However, it should be noted that the effect of selective capture of inclusions with partial loss of volatiles in relation to the composition of the crystallization medium is not excluded during the growth. This may increase the temperature of their homogenization significantly between 1400 and 1500°C. © 2016, Pleiades Publishing, Ltd.
Ключевые слова:	Silicate melts; Partial melting; Microinclusions; Kimberlite pipes; High-pressure annealing; Diamonds; Cubic diamond; Crystallization medium; Silicates; Carbonation; High temperature;
Издано:	2016
Физ. характеристика:	с.1042-1045