Figure 2
From: Effect of solution saturation state and temperature on diopside dissolution
The ratio between Ca (open symbols) or Mg (closed symbols) concentration and Si concentration at steady-state divided by the stoichiometric number of moles of these elements in the solid is plotted against the Gibbs free energy of the reaction. The solid line indicates stoichiometric dissolution when the ratio equals 1. The color of the symbols and the indicated temperature are the same in the figure. All the experiments are conducted at an in situ pH of 7.5.