Li partitioning, diffusion and associated isotopic fractionation: theoretical and experimental insights

Abstract

Laboratory experiments on the partitioning of elements and isotopes between various phases (minerals, fluids, and melts) at thermodynamic equilibrium are fundamental to the interpretation of geochemical data. We compile and discuss in this chapter the measured partition coefficients of Li and Li isotopes between various phases (mineral–melt, mineral–fluid, and mineral–mineral), and the measured diffusion coefficients of Li in minerals, fluids, and melts. Furthermore, we present and discuss consequences of diffusive fractionation of Li isotopes. Based on the information compiled for partitioning and diffusion behavior of Li, we finally discuss experiments on fluid–rock interaction with special emphasis on the behavior of Li.