olivine

(Mg,Fe)2SiO4 [2 and 4 are subscripts] {olivine}| {chrysolite} {peridotite} is magnesium and iron nesosilicate and is green to yellow-brown. Peridotite igneous rock in mantle can react with seawater to make hydrogen. Hydrogen reacts with carbon-containing molecules to make methane.

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Physical Sciences>Earth Science>Mineral>Kinds>Silicates>Nesosilicate

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Date Modified: 2022.0224