Variability of iron isotopes among planetary bodies may reflect their accretion or differentiation histories. Experiments suggest nickel may be the ingredient controlling iron isotope signatures, supporting fractionation during core formation.
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Sossi, P. A nickel for your planet's thoughts. Nature Geosci 10, 249–251 (2017). https://doi.org/10.1038/ngeo2909
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DOI: https://doi.org/10.1038/ngeo2909
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