Comparative Study of Siderites of Hydrothermal, Sedimentary, and Bacterial Origin by Physical Methods

Chistyakova, N.I.; Antonova, A.V.; Rusakov, V.S.; Kubaniova, D.; Kohout, J.; Kiseleva, T.Y.; Chernov, M.S.; Lukyanova, E.N.; Sedykh, V.D.; Zavarzina, D.G.

Авторы: Chistyakova N.I., Antonova A.V., Rusakov V.S., Kubaniova D., Kohout J., Kiseleva T.Yu, Chernov M.S., Lukyanova E.N., Sedykh V.D., Zavarzina D.G.
Журнал: Crystallography Reports
Том: 68
Номер: 3
Год издания: 2023
Издательство: Maik Nauka/Interperiodica Publishing
Местоположение издательства: Russian Federation
Первая страница: 459
Последняя страница: 467
DOI: 10.1134/S1063774523700177
Аннотация: The physicochemical properties of siderites (FeCO3) of different origin have attracted attention due to challenges in the diagnostics with the aim of evaluating the involvement of bacteria in the formation of iron-rich sedimentary deposits. A comparative study of siderites of chemical and bacterial origin was performedby Mossbauer spectroscopy, X-ray diffraction, and scanning electron microscopy for the purpose ofdetermining the possible characteristics, which will allow the identification of biogenic siderite. It was found that all the characterized siderites have significant differences in the crystal morphology associated with the physicochemical conditions of their formation. Siderites of bacterial origin are characterized by a smaller crystal size compared to siderites of hydrothermal or sedimentary origin. The inhomogeneity of the nearest environment of the iron atoms, which was found for siderites of bacterial origin and which is manifested in the Mossbauer spectra as a larger width of the quadrupole shift distribution, can be used as a diagnostic indication of biogenic siderites.
Добавил в систему: Русаков Вячеслав Серафимович

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Comparative Study of Siderites of Hydrothermal, Sedimentary, and Bacterial Origin by Physical Methodsстатья

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