Fig. 18
Microscopic photograph shows the backing Fossiliferous limestone (Biomicrite) blocks of Chephren pyramid. The limestone is very-grained and composed mainly of calcite as the essential component associated with rare amounts of iron oxides, microcrystalline quartz and opaque minerals. Calcite represents the matrix of the rock and occurs as very fine-grained (micrite), anhedral to subhedral interlocked crystals. Quartz is detected as very fine-grained crystals scattered in the matrix