Chemistry
Pie Chart of Earth's Crust by Element
Last reviewed on 2026-05-22.
Chemistry — verifiable data, editable template
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Earth's continental crust is composed primarily of oxygen, silicon, and a handful of metals. Composition by mass.
The data
- Oxygen — 46.6 %
- Silicon — 27.7 %
- Aluminum — 8.1 %
- Iron — 5.0 %
- Calcium — 3.6 %
- Sodium — 2.8 %
- Potassium — 2.6 %
- Magnesium — 2.1 %
- Other — 1.5 %
Source
USGS / standard geochemistry references.
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