Element Percent by Volume oxygen 46.60% silicon 27.72% aluminum 8.13% iron 5.00% calcium 3.63% sodium 2.83% potassium 2.59% magnesium 2.09% titanium 0.44% hydrogen 0.14% phosphorus 0.12% manganese 0.10% fluorine 0.08% barium 340 ppm carbon 0.03% strontium 370 ppm sulfur 0.05% zirconium 190 ppm tungsten 160 ppm vanadium 0.01% chlorine 0.05% rubidium 0.03% chromium 0.01% copper 0.01% nitrogen 0.005% nickel trace zinc trace

Mineral Composition

The crust is chemically similar to andesite. The most abundant minerals in the continental crust are feldspar (41%), quartz (12%), and pyroxene (11%)

Keep in mind, the elemental composition of the Earth's crust is not the same as the composition of the Earth. The mantle and core account for significantly more mass than the crust. The mantle is about 44.8% oxygen, 21.5% silicon, and 22.8% magnesium, with iron, aluminum, calcium, sodium, and potassium. The Earth's core is believed to consist primarily of a nickel-iron alloy.

Sources