Spectra of solid (thin section) and fine-particulate Orgueil (CI). The fine particulates are dominated (67 wt%) by particles of <~40 μm (Donaldson Hanna et al. 2019). Spectra are normalized for comparison, and the fine particulate spectrum has had a small LOESS (generalized Savitsky-Golay) filter (0.15 width) applied to reduce the appearance of noise in the normalized spectrum. Bennu T1 and T2 spectra (Fig. 4) are not consistent with a volumetrically dominant fine-particulate component, which exhibits a considerable shift in the CF to higher wavenumbers, a shift in the silicate stretching the Reststrahlen band (RB) to higher wavenumbers, and a strong transparency feature (TF) at 895 cm⁻¹.