Articles | Volume 34, issue 5
Eur. J. Mineral., 34, 411–424, 2022
https://doi.org/10.5194/ejm-34-411-2022
Eur. J. Mineral., 34, 411–424, 2022
https://doi.org/10.5194/ejm-34-411-2022
Research article
06 Oct 2022
Research article | 06 Oct 2022

Melting relations of Ca–Mg carbonates and trace element signature of carbonate melts up to 9 GPa – a proxy for melting of carbonated mantle lithologies

Melanie J. Sieber et al.

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Short summary
Carbonates reduce the melting point of the mantle, and carbonate melts produced in low-degree melting of a carbonated mantle are considered the precursor of CO2-rich magmas. We established experimentally the melting relations of carbonates up to 9 GPa, showing that Mg-carbonates melt incongruently to periclase and carbonate melt. The trace element signature of carbonate melts parental to kimberlites is approached by melting of Mg-rich carbonates.