“…Moreover, the microstructures on these edges and microcracks were affected by reconstruction and relaxation processes, inducing changes in the activities of the mineral surfaces. 27 Further observations and analyses of some microcracks using SEM revealed that a majority of microcracks had widths within 20 μm ( Figure 4 ). Evidently, most suspended solids in underground water reservoirs are adsorbed onto the surfaces of microcracks and pores in the rocks, leading to a decrease in SS concentrations in the mine water.…”