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. Author manuscript; available in PMC: 2020 Mar 19.

Published in final edited form as: Nat Astron. 2019 Mar 19;3(4):332–340. doi: 10.1038/s41550-019-0722-2

Figure 4. — a, Comparison with whole-rock samples, b, Comparison with fine-particulate (<125 μm) samples. Spectra have been scaled and offset for comparison (see Methods). Vertical lines at 1110 and 530 cm⁻¹ indicate the positions of diagnostic peaks in the Bennu spectrum, and the vertical line at 440 cm⁻¹ denotes a diagnostic absorption.

Figure 4. — a, Comparison with whole-rock samples, b, Comparison with fine-particulate (<125 μm) samples. Spectra have been scaled and offset for comparison (see Methods). Vertical lines at 1110 and 530 cm⁻¹ indicate the positions of diagnostic peaks in the Bennu spectrum, and the vertical line at 440 cm⁻¹ denotes a diagnostic absorption.