Bennu’s spectrum compared with laboratory-measured mineral and CC meteorite spectra (Table B.1). A: Bennu’s global averaged spectrum: not a close match with common phyllosilicates or iron-bearing oxide minerals. B: Bennu’s end-member ratio spectra (black curves) without continuum removal: resembles graphite and iron oxides. C: Bennu’s global averaged spectrum: differs from Murchison IOM, Murchison slab, and labeled CC meteorite chip spectra.