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We investigated the geochemistry of naturally quenched, olivine-hosted melt inclusions from lavas corresponding to two of the four end-member mantle components from the Galápagos Archipelago: the high 3 He/ 4 He (Fernandina Is.) and the MORB-like (Santiago Is.) mantle components. Melt inclusions from both islands have a large range in chemical compositions and are trapped within olivine...