The Carbonatation of Anhydrite: Kinetics and Reaction Pathways

A textural and kinetic investigation of the carbonatation of anhydrite in the presence of carbonate- and bicarbonate-bearing solutions under static conditions was conducted. The replacement occurs via a coupled dissolution–precipitation mechanism. Textural and kinetic evidence indicates that the rate-limiting step in the replacement reaction was the dissolution of anhydrite and that the dissolution rate was likely controlled by the diffusion of...