Magnesium isotope heterogeneity of the isotopic standard SRM980 and new reference materials for magnesium-isotope-ratio measurements

Albert Galy,* Olga Yoffe, Philip E. Janney, Ross W. Williams, Christophe Cloquet, Olivier Alard, Ludwik Halicz, Meenakshi Wadhwa, Ian D. Hutcheon, Erick Ramon and Jean Carignan Department of Earth Sciences, University of Cambridge, Downing Street, Cambridge, UK CB2 3EQ. E-mail: [email protected]; Fax: 44 1223 333450; Tel: 44 1223 333404; Geological Survey of Israel, 30 Malkhey Israel Street, 95501 Jerusalem, Israel. Fax: 972 2 5314332; Tel: 972 2 5314205 Department of Geology, The Field Museum of Natural History, 1400 S. Lake Shore Drive, Chicago, IL 60605, USA. Fax: 312 665 7641; Tel: 312 665 7099 Chemical Biology & Nuclear Science Division, Lawrence Livermore National Laboratory, P.O. Box 808, L-231, Livermore, CA 94551-0808, USA. Fax: 925 422-3160; Tel: 925 423-8769 Centre de Recherche Pétrologique et Géochimique, CRPG-CNRS, 15, Rue Notre Dame Des Pauvres–B. P 20, 54501 Vandoeuvre-les-Nancy Cedex, France. Fax: 333 83 51 17 98. Tel: 333 83 59 42 02 Department of Earth Sciences, The Open University, Milton Keynes, UK MK7 6AA. Fax: 44 1908 655151; Tel: 44 1908 659781