Experimental partitioning of F and Cl between olivine, orthopyroxene and silicate melt at Earth's mantle conditions

Halogens have, because of their volatile behavior and incompatibility, the potential to act as key tracers of volatile transport processes within the Earth's mantle. A better understanding of halogen behavior during partial melting processes will improve our understanding of volatile input mechanisms into the Earth's mantle and give insight into its evolution over the Earth's history. This study introduces time of flight secondary ion mass spectrometry (TOF-SIMS) as an analytical method for the determination of halogen partition coefficients and significantly extends the available dataset for fluorine and chlorine partitioning between mantle minerals and silicate melts to conditions of partial melting processes in Ocean Island Basalt (OIB) source regions.