Comparison of T1 and T2 spectra with laboratory spectra of aqueously altered CC meteorites at OTES spectral resolution. Samples are polished thin sections. Dotted vertical lines denote features of interest in the Bennu spectra at 1095, 987, 814, 528, and 440 cm⁻¹. MeteoriticalBulletin classifications are given for all (except AhS 91A_1, which is given by Goodrich et al. 2019), followed by the proposed classification of Howard et al. (2015) for CM chondrites. See Appendix A.4 for more information.