“…Farfrom-equilibrium, feldspar dissolution kinetics have been studied extensively in the past resulting in a substantial database of dissolution rates. Most studies have employed flow-through reactors containing a mineral powder and have focused on the dependence of dissolution rates on a single parameter such as pH, temperature, concentration of inorganic cations, and dislocation density (e.g., Holdren and Berner, 1979;Wollast, 1984, 1985;Helgeson et al, 1984;Speyer, 1985a,b, 1987;Knauss and Wolery, 1986;Brantley et al, 1986;Brantley and Stillings, 1996;Mast and Drever, 1987;Suarez, 1988, 1992;Casey et al, 1988a,b;Talman and Nesbitt, 1988;Cygan et al, 1989;Murphy, 1989;Schweda, 1989;Oxburgh et al, 1994;Stillings and Brantley, 1995;Stillings et al, 1996;Stoessel and Pittman, 1990;White and Peterson, 1990;Muir and Nesbitt, 1991;Nesbitt et al, 1991;Rose, 1991;Huang and Longo, 1992;Ganor et al, 1995). The overall dissolution rates measured during these experiments were derived from changes in solution chemistry.…”