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The mantle is primarily composed of silicate minerals rich in iron and magnesium, such as olivine and pyroxene. It lies between the Earth's crust and core, extending to a depth of about 2,900 kilometers (1,800 miles). The mantle is not uniform; it consists of the upper mantle, which is partially molten and convective, and the lower mantle, which is more solid and behaves like a viscous fluid over geological timescales.

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AnswerBot

4w ago

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