Dear Colleagues Please consider presenting your research on analytical geochemistry at the 2024 Goldschmidt Conference in Chicago IL USA, 18- 23 August 2024 in our Session 6f: Advancement and Innovations in Reference Material Development, Isotope Ratio Mass Spectrometry, and Isotope Metrology in Geoscience applications Abstract submission is now open. Submit your abstract by 29 March 2024 (23:59 HST/UTC -10) to present in-person talks in Chicago and recorded talks from remote delegates. https://conf.goldschmidt.info/goldschmidt/2024/goldschmidt/2024/meetingapp.cgi Session 6f Description: Isotope ratio mass spectrometry is essential to geochemical and cosmochemical research. Recent technical innovations and newly developed methodologies for mass spectrometry techniques, such as AMS, TIMS, (LA)-MC-ICP-MS, (LA)-ICP-MS/MS, SIMS, Noble Gas MS, High Resolution IRMS, and others have spawned new applications in diverse fields of Geoscience. For many microbeam instruments (e.g., SIMS, LA-(MC)-ICP-MS), reference materials are necessary for calibration of signal intensities, ion counting detectors or correction of instrumental mass discrimination. Even where this is not the case (e.g., atom probe tomography), or where instrument responses are largely independent of the composition and form of target matrices, reference materials matched to analysed mineral matrices are necessary for calibration purposes and method validation and the quantification of accuracy and precision. We invite contributions that emphasize new developments in isotope ratio mass spectrometry, including advances in instrumentation, data treatment and software applications, novel techniques for high precision isotope ratio determination, and development and certification of both non-nuclear and nuclear isotopic reference materials for calibration of isotope ratio measurements (including radiometric ages and related elemental concentrations) and quality control. Keywords: analytical techniques, data processing, isotopic analysis, mass spectrometry and microanalytical Keynote Speaker: Anne Trinquier, Univ Brest, CNRS, Ifremer, Geo-Ocean, F-29280 Plouzané, France Conveners: Andrea Mundl-Petermeier (a.mundl-petermeier@iaea.org<mailto:a.mundl-petermeier@iaea.org>, International Atomic Energy Agency, Austria), Kate Souders (asouders@usgs.gov<mailto:asouders@usgs.gov>, US Geological Survey Denver), Stephan Richter (stephan.richter@ec.europa.eu<mailto:stephan.richter@ec.europa.eu>, European Commission, Belgium), Paul Sylvester (paul.sylvester@ttu.edu<mailto:paul.sylvester@ttu.edu>, Texas Tech University), Brad Peters (bradley.peters@erdw.ethz.ch<mailto:bradley.peters@erdw.ethz.ch>, ETH Zürich), Jesse R Reimink (jreimink@psu.edu<mailto:jreimink@psu.edu>, Pennsylvania State University) Hope to see you in the Windy City! Paul Sylvester Professor and Pevehouse Chair Department of Geosciences Texas Tech University 125 Science Building Lubbock TX 79409-1053 USA E-mail: paul.sylvester@ttu.edu phone: 806-834-5091