Data for “Lack of Mg isotope fractionation during basaltic differentiation in Kilauea Iki lava lake, Hawaii”

This study aims to investigate the fractionation behavior of Mg isotopes during magmatic differentiation. In this paper, we report high-precision (< 0.03‰, 2se) Mg isotopic data for a suite of well-studied cogenetic samples from the Kilauea Iki lava lake, Hawaii, using the critical mixture double spike technique.