Anyway, I think #weathering of minerals is one of the few types of CO2 sequestration which might actually achieve something because the chemical reaction which locks up the CO2 is not easily reversible, and it appears that olivine can be mined and also transported with a much lower CO2 output than the product will absorb.

In the Netherlands, a company called #Greensand is selling olivine, including as a compensation product where they'll mine it and dispose of it for you without you having to have it delivered to your home:

https://greensand.com/

In my case I bought this small amount from a local company called #Onlyvine which stocks the product:

https://www.onlyvine.nl/

If you're going to use sand or grit for some purpose, it may as well be olivine which might also have a positive effect on our climate.

This is not a paid for endorsement, btw, I just think it's interesting and probably positive. Also of course this cannot substitute for reducing consumption of fossil fuels as that's the most powerful way to reduce emissions.