... abundance estimates rather than mineral species determination. Since the arrival of the Perseverance rover to Jezero crater, scientific investigations have focused on two geologic units called the Máaz and the Séítah formations ( Bell et al. 2022 ; Liu et al. 2022 ; Farley et al. 2022 ). The Máaz...

... rocks of Jezero Crater contain alteration materials that indicate multiple aqueous alteration phases: Fe-Mg carbonate rims around olivines in the Séitah formation imply weakly acidic-to-neutral pH, CO 2 -rich circulating fluids with possibly a range of temperatures, while sulfate and perchlorate salt...

... impact basins on Mars—the Isidis Basin. Crater rim and floor units (Séítah and Máaz formations) have been investigated in Perseverance’s first science campaign, and six sample tubes have been acquired (as of this writing; Sun et al., 2022 ). Various secondary alteration phases of hypothesized volcanic...

... values of both products and reactants can be measured, isotope effects between these species can provide evidence for biological activity (biosignatures) and clues to the biogeochemical S cycle during the time of their formation ( Fike et al. 2015 , and references therein). MSR and MSD...