Chemical Composition of the Earth's Crust

This is a table that shows the elemental chemical composition of the Earth's crust. Keep in mind, these numbers are estimates. They will vary depending on the way they were calculated and the source. 98.4% of the Earth's crust consists of oxygen, silicon, aluminum, iron, calcium, sodium, potassium and magnesium. All other elements account for approximately 1.6% of the volume of the Earth's crust.

References

"Elements, Terrestrial Abundance". www.daviddarling.info. 2007-04-14.
Barbalace, Kenneth. "Periodic Table of Elements". Environmental Chemistry.com. 2007-04-14.
"Abundance in Earth's Crust". WebElements.com. 2007-04-14.
"List of Periodic Table Elements Sorted by Abundance in Earth's crust". Israel Science and Technology Homepage. 2007-04-15.

Major Elements in the Earth's Crust

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