Let's say I have access to a few dozen piles of mining tailings in Australia... bits, pieces, chunks, whatnot. And let's say I have the budget and process tools to crush said tailings down to a nice fine powder, suitable for ambient capture of CO2 given the basalt, limestone, olivine or magnesium content of said tailings.
Question: doesn't the crushing of tailings down to a powda (yeah, I said powda cuz I'm Australia) actually release CO2 that is in said rocks? And how would one go about measuring this for carbon accounting purposes? Is this or is this not a conundrum?
I sincerely appreciate any and all responses re this question.