%0 Journal Article %T The S3- Ion Is Stable in Geological Fluids at Elevated Temperatures and Pressures %+ Géosciences Environnement Toulouse (GET) %A Pokrovski, Gleb S. %A Dubrovinsky, Leonid S. %< avec comité de lecture %@ 0036-8075 %J Science %I American Association for the Advancement of Science (AAAS) %V 331 %P 1052 %8 2011 %D 2011 %Z 2011Sci...331.1052P %R 10.1126/science.1199911 %K GEOCHEM PHYS %Z Sciences of the Universe [physics]Journal articles %X The chemical speciation of sulfur in geological fluids is a controlling factor in a number of processes on Earth. The two major chemical forms of sulfur in crustal fluids over a wide range of temperature and pressure are believed to be sulfate and sulfide; however, we use in situ Raman spectroscopy to show that the dominant stable form of sulfur in aqueous solution above 250°C and 0.5 gigapascal is the trisulfur ion S3-. The large stability range of S3- enables efficient transport and concentration of sulfur and gold by geological fluids in deep metamorphic and subduction-zone settings. Furthermore, the formation of S3- requires a revision of sulfur isotope-fractionation models between sulfides and sulfates in natural fluids. %G English %L insu-03620194 %U https://insu.hal.science/insu-03620194 %~ INSU %~ METEO %~ UNIV-TLSE3 %~ CNRS %~ CNES %~ OMP %~ OMP-LMTG %~ OMP-GET %~ UNIV-UT3 %~ UT3-INP %~ UT3-TOULOUSEINP