I see that I could have skipped some of my previous explaining :-) If you are interested in modeling rate constants and mechanisms, the most interesting work I

I see that I could have skipped some of my previous explaining :-) If you are interested in modeling rate constants and mechanisms, the most interesting work I have come across is the Reaction Mechanism Generator developed at MIT and Northeastern University: https://github.com/ReactionMechanismGenerator https://github.com/ReactionMechanismGenerator https://greengroup.mit.edu/reaction-mechanism-generator https://greengroup.mit.edu/reaction-mechanism-generator https://rmg.mit.edu/ https://rmg.mit.edu/ https://web.northeastern.edu/comocheng/ https://web.northeastern.edu/comocheng/ As you may be aware, determining rate constants from calculations is quite difficult even for gas-phase reactions. It's much harder for condensed-phase reactions. I do not have any hope of applying these techniques to olivine weathering at present. There have been quite a few small scale laboratory experiments on olivine weathering. There will be more factors at work in a real near-shore environment: abrasion by sand and wave action, biological activity, varying temperatures depending on the locale. I think that questions of rates need to be answered by field trials now; theory is inadequate and small lab experiments have already been done. But I still contend that this is not "simply dissolving" CO2 in ocean surface waters -- it is an acid-base reaction, with magnesium providing alkalinity.