July 2022: Aragonite fractionation factors from our cave-analogue experiments are published in the 2021 GCA article “Lithium isotopes and partition coefficients in inorganic carbonates: Proxy calibration for weathering reconstruction”. These fractionation factors can be calculated from tables 1 and 2 of the article, available at doi.org/10.1016/j.gca.2021.02.037 or they are calculated and compared with other studies here: EPIK_aragonite_out.pdf