Bidirectional reflectance of (a) CM chondrites in a range of hydration levels, (b) CM2 Murchison with different particle sizes, and (c) CI1 and Tagish Lake chondrites, together with spectra of (96) Aegle from Fig. 5. The detailed information about the samples is listed in Table 2. Vertical dashed lines show absorption band centres at 2.83 µm for intermediate- to least-hydrated CM chondrites and at 2.72 µm for CI and C2 ungrouped chondrites (Takir et al. 2013).