Polyphase hydrocarbon inclusions in garnet from the Mir diamondiferous pipe |
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| Authors: | V K Garanin A Ya Biller V L Skvortsova A V Bovkun and G V Bondarenko |
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| Institution: | (1) Department of Geology, University of Toronto, 22 Russell Street, Toronto, ON, Canada, M5S 3B1;(2) Isotope Geology and Mineral Resources, ETH Z?rich, ETH Zentrum NO, 8092 Z?rich, Switzerland |
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| Abstract: | The garnet nodules from the enrichment concentrate of the Mir kimberlite pipe, which have different saturation levels of regularly
oriented mineral and primary polyphase fluid inclusions, are investigated. The garnets that contain inclusions are classified
in the grossular-almandine-pyrope series and are usually characterized by an increased content of Si, Mg, Al, and the absence
of Fe3+. The polyphase fluid inclusions are studied using IR-Fourier- and Raman spectroscopy. The presence of polyaromatic hydrocarbons,
H2O and CO2 is established in their structure, which indicates the hydrocarbon specific character of fluids that participate in the processes
of deep mineral formation. |
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