Reference spectra for perchlorates, phosphates, obsidian, and organic compounds used in Fig. 2-4, Fig. S4, and Fig. S8 measured on various deep-UV Raman and fluorescence instruments for the study: Scheller & Razzell Hollis et al., Aqueous alteration processes in Jezero crater, Mars - implications for organic geochemistry, Science. Details around all measurements are found in the supplemental Materials & Methods section of the paper.