Dear Isogeochem-ers, Does any one have references for, experience with, or suggestions for d13C analysis of carbides, such as FeC? Any suggestions would be welcome. Lou Derry ---------------------------- Dr. Louis A. Derry Assistant Professor Cornell University Dept.of Geological Sciences Ithaca, NY 14853-1504 tel. (607)255-9354 fax (607)254-4780 ----------------------------