What Is the Moon Made Of?


Quick Answer

The lunar crust is made of 43 percent oxygen, 20 percent silicon, 19 percent magnesium, 10 percent iron, 3 percent calcium and 3 percent aluminum. The moon's core is thought to consist of iron, sulfur and nickel, with the largest middle layer, or mantle, composed of olivine, clinopyroxene and orthopyroxene.

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What Is the Moon Made Of?
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Full Answer

The moon’s core occupies about 2 percent of the moon’s entire mass and is in a partly molten state. The moon’s surface layer also has trace amounts of 0.42 percent chromium, 0.18 percent titanium, 0.12 percent manganese, potassium, uranium, thorium, hydrogen and a few more elements. All these elements form a strong layer called regolith. Mafic plutonic and maria basalt are the two types of rocks found in the regolith.

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