CHOS gas/fluid‐induced reduction in ureilites

• Published in: Meteoritics & planetary science Vol. 56; no. 11; pp. 2062 - 2082
• Main Authors: Langendam, Andrew D., Tomkins, Andrew G., Evans, Katy A., Wilson, Nicholas C., MacRae, Colin M., Stephen, Natasha R., Torpy, Aaron
• Format: Journal Article
• Language: English
• Published: Hoboken Wiley Subscription Services, Inc 01.11.2021
• Subjects: Diffusion rate; Enhanced diffusion; Fractures; Grain boundaries; Graphite; Hydrocarbons; Hydrogen sulfide; Iron; Metallurgy; Methane; Olivine; Oxidation; Redox reactions; Reducing agents; Reduction (metal working); Smelting; Sulfidation; Sulfur; Supercritical fluids; Troilite; Ureilites

Ureilite meteorites contain regions of localized olivine reduction to Fe metal widely accepted to have formed by redox reactions involving oxidation of graphite, a process known as secondary smelting. However, the possibility that other reductants might be responsible for this process has largely be...