Absolute spectra of anhydrous silicates, hydrated silicates, sulfides, carbonates, and oxides as they would be observed through the full set of OSIRIS NAC filters. The solid lines above are laboratory data of the corresponding mineral, with the central wavelengths of NAC (dots) and with their bandwidths (horizontal bars), while resampled laboratory data are arbitrarily (lowered by 1/8 of the maxima) offset for display.