What minerals are found in Earth's core?

What minerals are found in Earth's core?

• A. Iron and Nickel
• B. Oxygen and Silicon
• C. Magnesium and Aluminum
• D. Sulfur and Carbon

Answer: (A)

Earth's center is dominated by a metallic iron-nickel alloy. During early formation, the planet differentiated, with the heavier elements sinking toward the center and lighter silicates rising to form the mantle and crust. Seismic data reveal a liquid outer core and a solid inner core, both consistent with a dense Fe–Ni composition, since iron and nickel remain metallic under the extreme pressures and densities there. These elements account for the core’s high density and the way seismic waves travel through it, unlike the crust and mantle, where silicate minerals with oxygen, silicon, magnesium, and aluminum are common. sulfur and carbon can be present in smaller amounts but do not define the core’s bulk composition. So the central, dominant constituents are iron and nickel.

Earth's center is dominated by a metallic iron-nickel alloy. During early formation, the planet differentiated, with the heavier elements sinking toward the center and lighter silicates rising to form the mantle and crust. Seismic data reveal a liquid outer core and a solid inner core, both consistent with a dense Fe–Ni composition, since iron and nickel remain metallic under the extreme pressures and densities there. These elements account for the core’s high density and the way seismic waves travel through it, unlike the crust and mantle, where silicate minerals with oxygen, silicon, magnesium, and aluminum are common. sulfur and carbon can be present in smaller amounts but do not define the core’s bulk composition. So the central, dominant constituents are iron and nickel.