Astronomy
Pie Chart of the Moon's Elemental Composition
Last reviewed on 2026-05-22.
Astronomy — verifiable data, editable template
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The Moon's surface (regolith and crust) is composed primarily of oxygen, silicon, and a handful of metals. Composition by mass.
The data
- Oxygen — 43 %
- Silicon — 21 %
- Aluminum — 10 %
- Calcium — 9 %
- Iron — 9 %
- Magnesium — 5 %
- Other — 3 %
Source
Lunar and Planetary Institute / Apollo sample analysis.
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