Hello Mineralogical Hive Mind, We are looking for a graphite standard for d13C measurements. Are they any suggestions/sources you would recommend? Thanks in advance! Emily _____________________________________ Dr. Emily Stewart (she/her) Assistant Professor Earth, Ocean and Atmospheric Sciences Florida State University Tallahassee, FL 32306 emstewart@fsu.edu

Hi Emily, IAEA has a graphite standard “USGS24 /NIST name: RM 8541). For SIMS analysis we prepared our own natural graphite in a quartzite as standard (See DOI 10.1007/s00410-011-0626-3), which I can share (as far as the sample stock allows). Let me know if you need some grains. Best wishes Satish ############################# Prof. M. Satish-Kumar Professor of Geology, Niigata University, 2-8050 Ikarashi, Nishi-ku, Niigata 950-2181, JAPAN Tel: +81 25 262 6327 Email: satish@geo.sc.niigata-u.ac.jp On Oct 9, 2024, at 3:07, Emily Stewart via MSA-talk <msa-talk@minlists.org> wrote: Hello Mineralogical Hive Mind, We are looking for a graphite standard for d13C measurements. Are they any suggestions/sources you would recommend? Thanks in advance! Emily _____________________________________ Dr. Emily Stewart (she/her) Assistant Professor Earth, Ocean and Atmospheric Sciences Florida State University Tallahassee, FL 32306 emstewart@fsu.edu<mailto:emstewart@fsu.edu> _______________________________________________ MSA-talk mailing list -- msa-talk@minlists.org<mailto:msa-talk@minlists.org> To unsubscribe send an email to msa-talk-leave@minlists.org<mailto:msa-talk-leave@minlists.org>