FIG. 15.

Comparison of VSWIR spectra (A and B) collected from spots (A–C) on sample 14 (Fig. 14) with laboratory spectrometer and representative matching library spectra (C–F). Vertical lines correspond to features at 0.53, 0.87, 0.93, 1.42, 1.91, 2.3, 2.34, 2.35, and 2.5 μm. See text for details on features and discussion. Spectra on the left are normal, while spectra on the right are continuum-removed. Continuum-removed and library spectra are offset for clarity. Close-up of region 1.8–2.5 μm is shown in Fig. 16. For details on library spectra used, see Appendix A.