Fig. 3.

Relationship of weathering rates of olivine at 25 °C with pH. Weathering rates at −40 °C calculated in this study are shown by the orange bar. Dark gray lines indicate fit to the accumulated olivine dissolution data calculated by Olsen and Rimstidt¹² including uncertainties (s.e.m.) (light gray area) and are extrapolated below pH 1. Weathering rates measured in this study are equivalent to the weathering rate of forsterite at 25 °C and a pH of ~2.5¹²