The water-rock reaction of granite，Reduced SiO2 content

[duanjiabin]

The water-rock reaction of granite, I add SiO2 and the reaction generates too much content, is there any reaction in the reaction between granite and geothermal water that can significantly reduce the content of SiO2, or is there an equilibrium constant for the conversion between colloid and solution?

[dlparkhurst]

I have no idea what you did or what you want to happen. You can use REACTION, EQUILIBRIUM_PHASES, or KINETICS to add or remove Si.

There are a range of SiO2 phases with different solubilities. If you include quartz in equilibrium phases, you will have a smaller Si concentration than if you use chalcedony.

[duanjiabin]

I have no idea what you did or what you want to happen. You can use REACTION, EQUILIBRIUM_PHASES, or KINETICS to add or remove Si.

There are a range of SiO2 phases with different solubilities. If you include quartz in equilibrium phases, you will have a smaller Si concentration than if you use chalcedony.

thanks for your reply, I reduce the concentration of my reactants to meet the requirements.