This data set is for the manuscript "Amphibole-silicate melt halogen partition coefficients: Cryptic amphibole fractionation and chlorine to fluorine ratios in arc magmas". In this study, 14 experiments were performed in a cold seal pressure vessel at conditions of 850–975°C and 150–200 MPa to understand Cl and F partitioning between amphibole and dacitic to rhyolitic melts in arc settings. We performed forward crystallization modeling on the effects of amphibole crystallization on arc volcanic halogen contents and compared experimentally determined partition coefficients to previous studies.
