Reflectance spectra of CK, CO, and CV chondrites. The spectra are sorted by class and decreasing NIR slope. The two spectra from the RELAB database are marked by an ‘R’ beside the name of the respective meteorite. Wavelengths below 0.7 μm (dotted line) are excluded from the following analysis. The spectra are shifted along the y-axis for comparability. The spectra of the CO chondrites are from Eschrig et al. (2019b), and those of CV chondrites are from Eschrig et al. (2019a). The measurement of the CK chondrite is unpublished (J. Eschrig).