what material did the egyptians use for buildings
Limestone and sandstone were the main building stones of ancient Egypt. From Early Dynastic times onward, limestone was the material of choice for pyramids, mastaba tombs, and temples within the limestone region.
Metamorphic rocks used by the ancient Egyptians include: anorthosite gneiss and tonalite gneiss (foliated); and marble, metaconglomerate, metagabbro, metagraywacke, serpentinite, and steatite (non-foliated).