Buffon, 75005 Paris, France, (jerome.aleon@mnhn.fr), 2IAS, UMR 8617, CNRS, Univ. Paris-Saclay, 91405...Orsay cedex, France, 3GEOPS, CNRS UMR 8148, Univ Paris-Saclay, 91405 Orsay cedex, France, 4Dept of Earth...5 ICMMO, CNRS UMR 8182, Univ. Paris-Saclay, 91405 Orsay cedex, France. Introduction: Chondritic meteorites...ICCMO and ENS Paris and Electron Probe MicroAnalysis at the CAMPARIS facility in Paris. O and Mg isotopes...50 in the National Museum of Natural History in Paris, respectively. Results: UH154-11 has a fine-grained |