Duncan McDonald led a study investigating the CO2 mineralization of kimberlite mine wastes from the Gahcho Kue Diamond Mine, Northwest Territories, Canada. We measured the drawdown of CO2 post-deposition and determined CO2 removal rates using column experiments over 1 year. While field studies are needed to refine rates, we proposed that enhanced weathering of kimberlite residues could be incorporated into mine closure and reclamation, thereby extending CO2 removal beyond the life of the mine to achieve meaningful carbon sequestration. Download here.
