Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
Various growth environments of cloudy diamonds from the Malobotuobia kimberlite field (Siberian craton). / Skuzovatov, Sergei; Zedgenizov, Dmitry; Howell, Daniel и др.
в: Lithos, Том 265, 15.11.2016, стр. 96-107.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - Various growth environments of cloudy diamonds from the Malobotuobia kimberlite field (Siberian craton)
AU - Skuzovatov, Sergei
AU - Zedgenizov, Dmitry
AU - Howell, Daniel
AU - Griffin, William L.
PY - 2016/11/15
Y1 - 2016/11/15
N2 - Microinclusions of high-density fluids (HDF's) occur in cloudy diamonds from the Mir and Internatsionalnaya kimberlite pipes (Malobotuobia kimberlite field, Siberian platform). These HDFs are of typical high-Mg carbonatitic composition; a few diamonds contain microinclusions that define a low-Mg carbonatitic to silicic trend. The observed variations are interpreted as resulted from mixing of two contrasting fluids derived from the partial melting mainly of carbonated peridotite (the high-Mg carbonatitic HDFs) and eclogite (silica-rich HDFs and HDFs with high Ca/(Ca + Mg + Fe)). Immiscibility of carbonatitic and silica-rich fluids provides a possible mechanism for the co-existence of the observed HDFs but needs further proof. The uniform carbon isotope composition of cloudy diamonds with high-Mg carbonatitic microinclusions from both kimberlite pipes implies a single peridotitic source.
AB - Microinclusions of high-density fluids (HDF's) occur in cloudy diamonds from the Mir and Internatsionalnaya kimberlite pipes (Malobotuobia kimberlite field, Siberian platform). These HDFs are of typical high-Mg carbonatitic composition; a few diamonds contain microinclusions that define a low-Mg carbonatitic to silicic trend. The observed variations are interpreted as resulted from mixing of two contrasting fluids derived from the partial melting mainly of carbonated peridotite (the high-Mg carbonatitic HDFs) and eclogite (silica-rich HDFs and HDFs with high Ca/(Ca + Mg + Fe)). Immiscibility of carbonatitic and silica-rich fluids provides a possible mechanism for the co-existence of the observed HDFs but needs further proof. The uniform carbon isotope composition of cloudy diamonds with high-Mg carbonatitic microinclusions from both kimberlite pipes implies a single peridotitic source.
KW - Carbonatite melt
KW - Diamond
KW - Eclogite
KW - Hydrous-silicic high-density fluid
KW - Microinclusions
KW - Peridotite
UR - http://www.scopus.com/inward/record.url?scp=84964622024&partnerID=8YFLogxK
U2 - 10.1016/j.lithos.2016.04.013
DO - 10.1016/j.lithos.2016.04.013
M3 - Article
AN - SCOPUS:84964622024
VL - 265
SP - 96
EP - 107
JO - Lithos
JF - Lithos
SN - 0024-4937
ER -
ID: 25482157