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Metamorphic rocks used by the ancient Egyptians include: anorthosite gneiss and tonalite gneiss (foliated); and marble, metaconglomerate, metagabbro, metagraywacke, serpentinite, and steatite (non-foliated).
In addition to some smaller -. scale mining of other. materials, the early Egyptians. used various types of stone. for building, sculpture, and. other types of ornamentation. of public works.