A comprehensive and internally consistent mineral dissolution rate database: Part I: Primary silicate minerals and glasses

Mineral dissolution rates control the temporal evolution of many natural processes on surface and upper crust Earth. This is first a series papers describing development implementation comprehensive internally consistent database major rock-forming minerals. In this paper, we describe retrieval regression primary silicates, including quartz other SiO2 polymorphs, feldspars, pyroxenes, amphiboles, micas, volcanic glass, olivines. Owing to limited fluid chemistry data available for published experimental studies, BET area normalized mineral most glass (r) were regressed usingr=?iAiaH+nieEaiRT1?exp?A?RT where Ai stands pre-exponential factors, aH+ corresponds hydrogen ion activity, ni refers reaction orders, T designates absolute temperature, R denotes gas constant, Eai represents activation energies, ? Temkin's average stoichiometric number, A chemical affinity reaction. Where relevant lacking, extrapolated assuming that follows similar trends within same group. Regression was performed using least-squares algorithms. The difference between calculated measured ranged from 0.1 0.7 log units depending mineral. obtained rate equations implemented into carbfix.dat direct use in PHREEQC software but can be extended geochemical modeling software, such as TOUGHREACT.