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Partition Coefficients of Trace Elements Between Carbonates and Melt and Suprasolidus Phase Relation of Ca-Mg-Carbonates at 6 Gpa

Authors
/persons/resource/sieber

Sieber,  Melanie
3.6 Chemistry and Physics of Earth Materials, 3.0 Geochemistry, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum;

/persons/resource/fwilke

Wilke,  F.
3.1 Inorganic and Isotope Geochemistry, 3.0 Geochemistry, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum;

/persons/resource/mkoch

Koch-Müller,  M.
3.6 Chemistry and Physics of Earth Materials, 3.0 Geochemistry, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum;

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Citation

Sieber, M., Wilke, F., Koch-Müller, M. (2020): Partition Coefficients of Trace Elements Between Carbonates and Melt and Suprasolidus Phase Relation of Ca-Mg-Carbonates at 6 Gpa. - American Mineralogist, 105, 6, 922-933.
https://doi.org/10.2138/am-2020-7098


Cite as: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5000582
Abstract
By performing high pressure and temperature experiments, this study clarifies the suprasolidus phase relations of the nominally anhydrous Ca-Mg-CO3 system at 6 GPa showing that Ca-Mg-carbonates will (partially) melt for temperatures above ~1300 ℃. Further, partition coefficients for Li, Na, K, Mn, Fe, Sr, Ba, Pb, Nb, Y and rare earth elements between dolomite and dolomitic melt, Ca-magnesite and dolomitic melt and magnesite and dolomitic melt are established.