Talk:Eco-cement

How is it sequestering CO2? Presumably the MgO was made by calcining magnesite or dolomite, which releases CO2. Unless the MgO is being sourced from peridotite, it's not sequestering CO2, so the main benefit is in the lower temperature required. --Pyrochem (talk) 22:14, 10 October 2009 (UTC)