This mod is compatible with literally anything, do not concern yourself with what it does, it's a framework type mod. Feel free to read the below if you really must know, though. You don't need this unless a mod you want to use is dependent on it.
Q - Can I add this to an existing save?
A - Absolutely, but understand that if your map was generated without it any mods that use this one will get stone types that are unlikely to line up with the ones on your map. They will, from there on out, be consistent with each other though.
Q - Can I remove this safely without messing up my save?
A - Yep!