An igneous rock similar to granite, but containing more plagioclase feldspar than orthoclase feldspar and composed of up to 20% quartz. Granodiorite was quarried at Mons Claudianus in the Red Sea Governorate in eastern Egypt from the 1st century AD to the mid-3rd century AD. Much of the quarried stone was transported to Rome for use in projects such as the Pantheon and Hadrian’s Villa.
