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I've read that mantle is made of peridotite. Is it true? If it's true, does that mean peridotite becomes all kinds of rocks and stones later? - Quora

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Olivine: Mineral, Peridot, Silicate Minerals, Endmember, Forsterite, Fayalite, Nickel, Monticellite, Tephroite, Conchoidal Fracture, Brittleness, Bowen's Reaction Series : Surhone, Lambert M., Timpledon, Miriam T., Marseken, Susan F.: : Libri