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Earth, Planets and Space
Fig. 2 | Earth, Planets and Space

Fig. 2

From: Measurement of ferric iron in Chang’e-5 impact glass beads

Fig. 2

Fe L-edge EELS of reference materials, including hematite, olivine and Fe–Ni metal. The calculated Fe3+/ΣFe values are 97% for hematite, 9% for olivine, and 11% for Fe–Ni metal using the method described by figure S1. Except for the peak position features, peak tail features can be used to distinguish Fe0 from Fe2+ and Fe3+; that is, Fe0 has a tail feature with higher intensity than Fe2+ and Fe3+

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