(a)
(b)
(c)
(d)
Figure 5: SEM electron backscatter images of the dissolved mineral surface by SO2-CO2-water interaction in the experiments: (a) K-Na plagioclase in 0.1% SO2 case, (b) Na-plagioclase in 1% SO2 case, (c) chlorite in 0.1% SO2 case, and (d) chlorite in 1% SO2 case.