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


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Аннотация

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.

Авторлар туралы

M. Babushkina

Institute of Precambrian Geology and Geochronology

Хат алмасуға жауапты Автор.
Email: msbab@mail.ru
Ресей, St. Petersburg, 690950

V. Ugolkov

Institute of Silicate Chemistry

Email: msbab@mail.ru
Ресей, St. Petersburg, 199155

Yu. Marin

St. Petersburg Mining University

Email: msbab@mail.ru
Ресей, St. Petersburg, 199106

L. Nikitina

Institute of Precambrian Geology and Geochronology; St. Petersburg State University

Email: msbab@mail.ru
Ресей, St. Petersburg, 690950; St. Petersburg, 199034

A. Goncharov

Institute of Precambrian Geology and Geochronology; St. Petersburg State University

Email: msbab@mail.ru
Ресей, St. Petersburg, 690950; St. Petersburg, 199034

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