What is the density of the mantle core?

The mantle, which lies between the Earth's crust and outer core, has an average density ranging from about 3.3 to 5.6 grams per cubic centimeter. This variation in density is due to changes in composition and pressure with depth. The upper mantle is less dense, while the lower mantle becomes denser due to the increased pressure. The core itself, composed mainly of iron and nickel, has a much higher density, estimated at around 9.9 to 12.2 grams per cubic centimeter.