Structural features of quench products of melts in the chloride-carbonate-silicate systems revealed by vibrational and X-ray spectroscopy
- Авторы: Safonov O.1,2,3, Shiryaev A.4,5, Tyurnina A.6,7, Huthwelker T.8
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Учреждения:
- Institute of Experimental Mineralogy
- Geological Faculty
- Department of Geology
- Institute of Physical Chemistry and Electrochemistry
- Institute of Geology of Ore Deposits, Petrography, Mineralogy and Geochemistry
- Faculty of Physics
- National Graphene Institute
- Paul Scherrer Institut, Swiss Light Source
- Выпуск: Том 25, № 1 (2017)
- Страницы: 23-41
- Раздел: Article
- URL: https://journals.rcsi.science/0869-5911/article/view/177491
- DOI: https://doi.org/10.1134/S0869591116060059
- ID: 177491
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Аннотация
Quench products of melts synthesized at 5 GPa and 1500°C in model system CaMgSi2O6–Na2CO3(±CaCO3)–KCl, were studied using vibrational (IR and Raman) and X-ray absorption spectroscopy (XANES). Correlations between structural peculiarities of the quenches with chemical composition are established. Increase of the CaMgSi2O6 content of the melts results in gradual substitution of the Са-bearing carbonate groups by Na-bearing, whereas Ca is progressively more bounded with silicate structural units. XANES spectra reveal that chlorine is predominantly present as (KxNa1–x)Cl complexes. XANES spectra also indicate distribution of potassium cations between chloride and silicate groups, although its partial bonding with carbonate groups in the melt is not excluded.
Об авторах
O. Safonov
Institute of Experimental Mineralogy; Geological Faculty; Department of Geology
Автор, ответственный за переписку.
Email: oleg@iem.ac.ru
Россия, ul. Academician Ossipian, 4, Chernogolovka, Moscow oblast, 142432; Moscow, 119899; Auckland Park, Johannesburg, 2006
A. Shiryaev
Institute of Physical Chemistry and Electrochemistry; Institute of Geology of Ore Deposits, Petrography, Mineralogy and Geochemistry
Email: oleg@iem.ac.ru
Россия, Leninskii pr., 31, korp. 4, Moscow, 119071; Staromonetnyi per., 35, Moscow, 119017
A. Tyurnina
Faculty of Physics; National Graphene Institute
Email: oleg@iem.ac.ru
Россия, Moscow, 119899; Booth Street East, Manchester, M13 9PL
T. Huthwelker
Paul Scherrer Institut, Swiss Light Source
Email: oleg@iem.ac.ru
Швейцария, Villigen PSI, 5232