Origin and evolution of high-mg carbonatitic and low-Mg carbonatitic to silicic high-density fluids in coated diamonds from Udachnaya Kimberlite pipe

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Origin and evolution of high-mg carbonatitic and low-Mg carbonatitic to silicic high-density fluids in coated diamonds from Udachnaya Kimberlite pipe. / Gubanov, Nikolai; Zedgenizov, Dmitry; Sharygin, Igor et al.

In: Minerals, Vol. 9, No. 12, 734, 12.2019.

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

BibTeX

@article{47c116d350d3470b930babcc09467446,

title = "Origin and evolution of high-mg carbonatitic and low-Mg carbonatitic to silicic high-density fluids in coated diamonds from Udachnaya Kimberlite pipe",

abstract = "Microinclusions of high-density fluids (HDFs) were studied in coated diamonds from the Udachnaya kimberlite pipe (Siberian craton, Russia). The presence of C-centers in the coats testifies to their formation shortly before kimberlite eruption, whereas the cores have much longer mantle residence in chemically different mantle substrates, i.e., peridotite-type (P-type) and eclogite-type (E-type). The carbon isotope composition indicates an isotopically homogeneous carbon source for coats and a heterogeneous source for cores. Microinclusions in the coats belong to two groups: high-Mg carbonatitic and low-Mg carbonatitic to silicic. A relationship was found between high-Mg carbonatitic HDFs and peridotitic host rocks and between low-Mg carbonatitic to silicic and eclogites. The composition of high-Mg carbonatitic HDFs with a “planed” trace-element pattern can evolve to low-Mg carbonatitic to silicic during percolation through different mantle rocks. The compositional variations of microinclusions in the coats reflect this evolution.",

keywords = "Carbon isotope composition, Diamond, HDFs, Mantle, Microinclusions, Nitrogen, EAST KIMBERLITE, INCLUSIONS, MELT, YAKUTIA, microinclusions, nitrogen, INFRARED-ABSORPTION, MANTLE, diamond, NITROGEN AGGREGATION, mantle, FIBROUS DIAMONDS, carbon isotope composition, ISOTOPE FRACTIONATION, FORMING FLUIDS",

author = "Nikolai Gubanov and Dmitry Zedgenizov and Igor Sharygin and Alexey Ragozin",

year = "2019",

month = dec,

doi = "10.3390/min9120734",

language = "English",

volume = "9",

journal = "Minerals",

issn = "2075-163X",

publisher = "MDPI AG",

number = "12",

}

RIS

TY - JOUR

T1 - Origin and evolution of high-mg carbonatitic and low-Mg carbonatitic to silicic high-density fluids in coated diamonds from Udachnaya Kimberlite pipe

AU - Gubanov, Nikolai

AU - Zedgenizov, Dmitry

AU - Sharygin, Igor

AU - Ragozin, Alexey

PY - 2019/12

Y1 - 2019/12

N2 - Microinclusions of high-density fluids (HDFs) were studied in coated diamonds from the Udachnaya kimberlite pipe (Siberian craton, Russia). The presence of C-centers in the coats testifies to their formation shortly before kimberlite eruption, whereas the cores have much longer mantle residence in chemically different mantle substrates, i.e., peridotite-type (P-type) and eclogite-type (E-type). The carbon isotope composition indicates an isotopically homogeneous carbon source for coats and a heterogeneous source for cores. Microinclusions in the coats belong to two groups: high-Mg carbonatitic and low-Mg carbonatitic to silicic. A relationship was found between high-Mg carbonatitic HDFs and peridotitic host rocks and between low-Mg carbonatitic to silicic and eclogites. The composition of high-Mg carbonatitic HDFs with a “planed” trace-element pattern can evolve to low-Mg carbonatitic to silicic during percolation through different mantle rocks. The compositional variations of microinclusions in the coats reflect this evolution.

AB - Microinclusions of high-density fluids (HDFs) were studied in coated diamonds from the Udachnaya kimberlite pipe (Siberian craton, Russia). The presence of C-centers in the coats testifies to their formation shortly before kimberlite eruption, whereas the cores have much longer mantle residence in chemically different mantle substrates, i.e., peridotite-type (P-type) and eclogite-type (E-type). The carbon isotope composition indicates an isotopically homogeneous carbon source for coats and a heterogeneous source for cores. Microinclusions in the coats belong to two groups: high-Mg carbonatitic and low-Mg carbonatitic to silicic. A relationship was found between high-Mg carbonatitic HDFs and peridotitic host rocks and between low-Mg carbonatitic to silicic and eclogites. The composition of high-Mg carbonatitic HDFs with a “planed” trace-element pattern can evolve to low-Mg carbonatitic to silicic during percolation through different mantle rocks. The compositional variations of microinclusions in the coats reflect this evolution.

KW - Carbon isotope composition

KW - Diamond

KW - HDFs

KW - Mantle

KW - Microinclusions

KW - Nitrogen

KW - EAST KIMBERLITE

KW - INCLUSIONS

KW - MELT

KW - YAKUTIA

KW - microinclusions

KW - nitrogen

KW - INFRARED-ABSORPTION

KW - MANTLE

KW - diamond

KW - NITROGEN AGGREGATION

KW - mantle

KW - FIBROUS DIAMONDS

KW - carbon isotope composition

KW - ISOTOPE FRACTIONATION

KW - FORMING FLUIDS

UR - http://www.scopus.com/inward/record.url?scp=85075928700&partnerID=8YFLogxK

U2 - 10.3390/min9120734

DO - 10.3390/min9120734

M3 - Article

AN - SCOPUS:85075928700

VL - 9

JO - Minerals

JF - Minerals

SN - 2075-163X

IS - 12

M1 - 734

ER -

ID: 22576801