Figure 4

SEM images showing textural features of clay minerals. (a) Dominant chlorite and (b) flaky petaloid textures, (c) illite size and crystal structure and (d) close-up of biotite displaying the crystal size and texture.

SEM images showing textural features of clay minerals. (a) Dominant chlorite and (b) flaky petaloid textures, (c) illite size and crystal structure and (d) close-up of biotite displaying the crystal size and texture.