Fig. 12
From: Experimental study of sulfate crystallization damage to glutenite rock in the Maijishan Grottoes
Micromorphological characteristics of the glutenite rock samples before and after destruction (a, b are micrographs of the original rock samples; c, d are external micrographs of the M-series samples; e, f are internal micrographs of the M-series samples; g, h are internal micrographs of the N-series samples; i, j are external micrographs of the N-series samples; in the figure, Qz represents quartz, K represents kaolinite, Cal represents calcite, Ab denotes sodium feldspar, I/S denotes imbricated layer, and M and N are MgSO4 and Na2SO4 crystals, respectively)