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Journal Article

Structural properties of sodium-rich carbonate-silicate melts: An in-situ high-pressure EXAFS study on Y and Sr

Authors
/persons/resource/pohlenz

Pohlenz,  Julia
4.3 Chemistry and Physics of Earth Materials, 4.0 Geomaterials, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum;

Pascarelli,  S.
External Organizations;

Mathon,  O.
External Organizations;

Belin,  S.
External Organizations;

Shiryaev,  A.
External Organizations;

Safonov,  O.
External Organizations;

Veligzhanin,  A.
External Organizations;

Murzin,  V.
External Organizations;

Irifune,  T.
External Organizations;

/persons/resource/max

Wilke,  M.
4.3 Chemistry and Physics of Earth Materials, 4.0 Geomaterials, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum;

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1750899.pdf
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Citation

Pohlenz, J., Pascarelli, S., Mathon, O., Belin, S., Shiryaev, A., Safonov, O., Veligzhanin, A., Murzin, V., Irifune, T., Wilke, M. (2016): Structural properties of sodium-rich carbonate-silicate melts: An in-situ high-pressure EXAFS study on Y and Sr. - Journal of Physics: Conference Series, 712, 012083.
https://doi.org/10.1088/1742-6596/712/1/012083


Cite as: https://gfzpublic.gfz-potsdam.de/pubman/item/item_1750899
Abstract
In-situ EXAFS combined with a Paris-Edinburgh press (PEP) is an outstanding tool to investigate the local environment of trace elements in melts at high pressure and temperature. A novel design of the pressure assembly ensures a highly stable experimental setup (reaching temperatures of up to 2000 K at 2.5 GPa) while permitting the necessary level of X- ray transmission. This study focuses on the structural incorporation of the geochemically important trace elements Y and Sr in sodium-rich silicate-carbonate melts. Y and Sr K edge EXAFS were collected in transmission mode of the melt (at ~2.5 GPa, 1600 K) and its respective quench products. Distinct changes in the XANES region suggest a change in site symmetry during the cooling process.