Former master’s student Amanda Stubbs published an exciting study in Chemical Geology. Amanda performed wet-dry cycling experiments for one year to simulate weathering of powdered brucite, wollastonite, serpentinite, and kimberlite residues. Quantitative mineralogy, total inorganic carbon, and stable and radiogenic carbon isotopes were used to verify carbon storage. Her study explains how and when these tools may be utilized successfully and, in other situations, may be misleading. For example, stable and radiogenic carbon isotopes generally lead to erroneous results due to CO2 exchange and kinetic fractionation and must be paired with other techniques. This study has implications for CO2 mineralization within mine waste and enhanced rock weathering, as carbon verification remains one of the greatest obstacles to the widespread deployment of these technologies. Download this paper and others from the Publications page.