When examining the elemental composition of the entire Earth (including its dense core, mantle, and crust), the most abundant metallic elements include iron, magnesium, aluminum, nickel, calcium, sodium, potassium, titanium, chromium, and manganese. Iron dominates the list by an overwhelming margin due to its massive concentration in Earth's molten core. In Earth's upper continental crust specifically, aluminum and iron are the most prevalent metallic elements mined for human industrial use.
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