Figure 10. SEM images of the Rectangular sample: (A) R15, pyrite and clay minerals; (B) R22, pores in calcite matrix; (C) R24, interparticle pores and calcite matrix; (D) R26, interparticle pores and calcite matrix; (E) R28, pyrite; (F) R28, organic matter; (G) R28, interparticle pores; (H) R30; pyrites; and (I) R30; clay minerals.