Title:
Phosphorus redox chemistry: Early and modern systems

Abstract:
Recent work on modern samples has revealed the surprising presence of reduced oxidation state phosphorus compounds in the environment. Whether formed by lightning, delivered by impact, produced by microbes, or generated by high-T, low-P metamorphic processes in rocks, phosphorus should no longer be considered synonymous with phosphorus. In this talk I will outline pathways for phosphorus redox chemistry, and detail what the modern world tells us. Furthermore, these redox pathways may have implications for global P sustainability.