Sulfur Speciation in Carbonaceous Chondrites HF/HCl Residues by S K-Edge XANES Microspectrometry

François-Regis Orthous-Daunay (1) , Eric Quirico (1) , Laurence Lemelle (2) , Pierre Beck (1) , V. de Andrade (3) , Alexandre Simionovici (4) , S. Derenne (5)

1 LPG - Laboratoire de Planétologie de Grenoble
2 LST - Laboratoire de Sciences de la Terre
3 ID21 Beamline
4 LGIT - Laboratoire de Géophysique Interne et Tectonophysique
5 Bioemco - Biogéochimie et écologie des milieux continentaux

Sulfur oxidation state of insoluble OM from 3 CI1, 5 CM2, Renazzo (CR2) and Tagish Lake was determined by S-XANES. Different redox ratios are reported among these chondrites, possibly evidencing chemical effects of hydrothermalism.

Domains: Sciences of the Universe [physics]

François-Regis Orthous-Daunay, Eric Quirico, Laurence Lemelle, Pierre Beck, V. de Andrade, et al.. Sulfur Speciation in Carbonaceous Chondrites HF/HCl Residues by S K-Edge XANES Microspectrometry. 40th Lunar and Planetary Science Conference, Mar 2009, The Woodlands, Texas, United States. pp.1777. ⟨insu-00363362⟩