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The application of finely ground silicate minerals to croplands and forests, with the aim of enhancing the rate of natural CO2 consuming weathering reactions, is receiving attention as a part of climate change mitigation strategies. Yet considerable uncertainty surrounds the quantification of CO2 removal associated with Enhanced Weathering, and its potential efficacy remains undemonstrated outside of the laboratory. Here, I discuss how the geochemical insights garnered from decades of natural weathering studies provide a pathway towards a strategy for ‘Monitoring, Reporting and Verification’ of CO2 sequestration, and also shed light on how deployment strategies, and specifically application sites, can be optimised. |