Astromat

Here, we report the mass-independent Fe isotope composition of the four different aliqouts of Bennu, OREX-800055-101, OREX-800117-110, OREX-803231-102, and OREX-800023-111. We also present data for the terrestrial standard BHVO-2, the carbonaceous chondrites Aguas Zarcas (CM), Orgueil (CI) & Tarda (C2-Ung), and the Eucrite Pasamonte which were used to monitor data quality. Mass-independent isotope analyses were carried out at ETH Zurich (Switzerland) using a Neptune Plus MC-ICP-MS.