Bright Angel Mudstones of Jezero Crater Exhibit Ferrous-Phosphate Nodules and Redox-Driven Reaction Fronts Indicating Habitable Conditions and Potential Biosignatures
To the point
Tiny nodules of vivianite-like iron phosphate and reaction fronts hosting greigite iron-sulfide formed at low temperature in Bright Angel mudstone with organic matter, indicating a weathered, clay-rich, water-rich setting with redox-driven mineral changes and potential biosignatures that require Earth-based analyses and future lab work to confirm.