... 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...

... 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...

..., 1) were prepared by precipitation method using FeCl 3 ·6H 2 O, FeCl 2 ·4H 2 O, and NiCl 2 ·6H 2 O as precursors. The performed analyses show the dependence of the rate of formation of the spinel phase on the chemical composition. To obtain the exact conditions for a single-phase spinel material...

...-temperature facies range of the Jurassic Claudia sinter apron, including within geyserite laminae. While geyserite was once considered to be abiogenic owing to its temperature of formation thought to be too high for life to flourish, more recent molecular and other studies of geyserite have indicated...

.... Hydroxyl radicals ( • OH) are generated through the reaction of photogenerated holes with water or hydroxide ions. They are highly reactive and can oxidize organic pollutants. The reduction of oxygen molecules by electrons from the conduction band can also lead to the formation of hydrogen peroxide (H 2 O...

... deposits in the Máaz formation could suggest several fluids of different compositions circulating at different times in a near-surface brine evaporation environment ( Farley et al., 2022 ; Scheller et al., 2022 ). Our database entries are based on peer-reviewed literature that confirms the presence...

... 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...