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Doklady Earth Sciences

, Volume 479, Issue 2, pp 456–459 | Cite as

Hydrogen and Carbon Groups in the Structures of Rock-Forming Minerals of Rocks of the Lithospheric Mantle: FTIR and STA + QMS Data

  • M. S. Babushkina
  • V. L. Ugolkov
  • Yu. B. Marin
  • L. P. Nikitina
  • A. G. Goncharov
Geology
  • 19 Downloads

Abstract

Using IR–Fourier spectrometry (FTIR) and simultaneous thermal analysis combined with quadrupole mass spectrometry of thermal decomposition products (STA + QMS), olivines and clinopyroxene from xenolites of spinel and garnet lherzolites contained in kimberlites and alkaline basalts were studied to confirm the occurrence of hydrogen and carbon within the structure of the minerals, as well as to specify the forms of H and C. The presence of hydroxyl ions (OH–) and molecules of crystal hydrate water (H2Ocryst) along with CO2, CH, CH2, and CH3 groups was detected, which remained within the structures of mantle minerals up to 1300°C (by the data of both techniques). The total water (OH–and H2Ocryst) was the prevailing component of the C–O–H system.

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Copyright information

© Pleiades Publishing, Ltd. 2018

Authors and Affiliations

  • M. S. Babushkina
    • 1
  • V. L. Ugolkov
    • 2
  • Yu. B. Marin
    • 3
  • L. P. Nikitina
    • 1
    • 4
  • A. G. Goncharov
    • 1
    • 4
  1. 1.Institute of Precambrian Geology and GeochronologyRussian Academy of SciencesSt. PetersburgRussia
  2. 2.Institute of Silicate ChemistryRussian Academy of SciencesSt. PetersburgRussia
  3. 3.St. Petersburg Mining UniversitySt. PetersburgRussia
  4. 4.St. Petersburg State UniversitySt. PetersburgRussia

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