Extended Data Fig. 4: Group 2 Fluorescence Feature Mineral Associations in Alfalfa and Dourbes.

A) Colorized ACI of Alfalfa (Máaz fm.) HDR scan on sol 370 with laser overlay (grey = no fluorescence detected, yellow = fluorescence at ~335–350 nm detected). Three points of interest with clear fluorescence are marked in white and correlate to the smoothed mean spectra below. Point 1 was co-located with Raman detections of amorphous silicate (broad ~1063 cm⁻¹); Point 2 and 3 were co-located with potential perchlorate detections (~961 cm⁻¹). B) Colorized ACI of Dourbes (Séítah fm.) Detail 1 scan on sol 269 with laser overlay (gray = no fluorescence detected, yellow = fluorescence at ~335–350 nm detected). Three points of interest with clear fluorescence are marked in white and correlate to the spectra below. Point 1 was co-located with Raman detections of potential olivine (~823 cm⁻¹) and carbonate (~1077 cm⁻¹); Point 2 was co-located with a potential carbonate detection (~10 cm⁻¹); and Point 3 with an unassigned peak at ~1015 cm⁻¹.