Homogenization of carbonate-bearing microinclusions in diamond at P–T parameters of the upper mantle

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Homogenization of carbonate-bearing microinclusions in diamond at P–T parameters of the upper mantle. / Ragozin, A. L.; Palyanov, Yu N.; Zedgenizov, D. A. и др.

в: Doklady Earth Sciences, Том 470, № 2, 01.10.2016, стр. 1042-1045.

Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование

BibTeX

@article{e2ddca8a09354641b6611e4a52c4a6de,

title = "Homogenization of carbonate-bearing microinclusions in diamond at P–T parameters of the upper mantle",

abstract = "The staged high-pressure annealing of natural cubic diamonds with numerous melt microinclusions from the Internatsional{\textquoteright}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{\textquoteright}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.",

author = "Ragozin, {A. L.} and Palyanov, {Yu N.} and Zedgenizov, {D. A.} and Kalinin, {A. A.} and Shatsky, {V. S.}",

year = "2016",

month = oct,

day = "1",

doi = "10.1134/S1028334X16100056",

language = "English",

volume = "470",

pages = "1042--1045",

journal = "Doklady Earth Sciences",

issn = "1028-334X",

publisher = "PLEIADES PUBLISHING INC",

number = "2",

}

RIS

TY - JOUR

T1 - Homogenization of carbonate-bearing microinclusions in diamond at P–T parameters of the upper mantle

AU - Ragozin, A. L.

AU - Palyanov, Yu N.

AU - Zedgenizov, D. A.

AU - Kalinin, A. A.

AU - Shatsky, V. S.

PY - 2016/10/1

Y1 - 2016/10/1

N2 - 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.

AB - 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.

UR - http://www.scopus.com/inward/record.url?scp=84994234776&partnerID=8YFLogxK

U2 - 10.1134/S1028334X16100056

DO - 10.1134/S1028334X16100056

M3 - Article

AN - SCOPUS:84994234776

VL - 470

SP - 1042

EP - 1045

JO - Doklady Earth Sciences

JF - Doklady Earth Sciences

SN - 1028-334X

IS - 2

ER -

ID: 25481806