Iron (Fe) is the fourth most abundant element in the earth's crust and plays important roles in
both biological and chemical processes. The redox reactivity of various Fe (II) forms has …

Mixed-valent iron [Fe (II)-Fe (III)] minerals such as magnetite and green rust have received a
significant amount of attention over recent decades, especially in the environmental …

The macronutrient phosphorus is thought to limit primary productivity in the oceans on
geological timescales. Although there has been a sustained effort to reconstruct the …

Water oxidation is a critical step in water splitting to make hydrogen fuel. We report the
solution synthesis, structural/compositional characterization, and oxygen evolution reaction …

Iron formations (IF) represent an iron-rich rock type that typifies many Archaean and
Proterozoic supracrustal successions and are chemical archives of Precambrian seawater …

Iron oxyhydroxide minerals, known to be chemically reactive and significant for elemental
cycling, are thought to have been abundant in early-Earth seawater, sediments, and …

Iron formations deposited in marine settings during the Precambrian represent large sinks of
iron and silica, and have been used to reconstruct environmental conditions at the time of …

Persistent anoxia and the lack of a skeletal silica sink through the Precambrian would have
promoted a variety of reactions between iron and dissolved silica through much of Earth's …

Geochemical proxies based on Fe abundance (Fe/Al) and Fe-speciation have been widely
applied to marine sediments in order to unravel paleo-depositional redox conditions though …

Life requires a wide variety of bioessential trace elements to act as structural components
and reactive centers in metalloenzymes. These requirements differ between organisms and …