Schreibersite on the early earth: scenarios for prebiotic phosphorylation

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Marco E. Ciriotti
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Schreibersite on the early earth: scenarios for prebiotic phosphorylation

Messaggio da Marco E. Ciriotti » lun 04 lug, 2016 11:28

Prossima pubblicazione.

Referenza:
▪ Pasek, M.A. (2016): Schreibersite on the early earth: scenarios for prebiotic phosphorylation. Geoscience Frontiers, 7, (in press).

Abstract:
The mineral schreibersite, (Fe,Ni)3P, provides a reactive source of phosphorus capable of forming phosphorylated molecules. These molecules may have been an important component of prebiotic chemistry, allowing their build-up and eventual commencement of autopoiesis. Discussed here are potential geochemical routes to providing schreibersite, as a potentially important prebiotic mineral, to the Hadean Earth. Two routes are identified: delivery of phosphides by meteoritic material and the reduction of phosphates to phosphides by high-temperature, low-redox conditions. About 1-10% of all crustal phosphorus is estimated to have been in schreibersite during the Hadean, making the long-term reaction of this mineral with organic-laden water plausible for many years. Ultimately, such conditions would have been conducive to the formation of life as we know it today.
Marco E. Ciriotti

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