gsminmag Mineralogical Magazine Mineralogical Magazine 0026-461X Mineralogical Society 10.1180/minmag.1998.62A.3.171 Production and Preservation of Organic Matter in a Late Triassic Intraplatform Basin Vetö I. Geological Institute of Hungary, 1143 Budapest, Stef'ánia fit 14, Hungary Hetényi M. Institute of Geochemistry, Mineralogy and Petrography, Attila József University, 6701 Szeged, P.O. Box 651, Hungary Hámor-Vidó M. Geological Institute of Hungary, 1143 Budapest, Stef'ámia út 14, Hungary Hufnagel H. Bundesanstalt für Geowisssenschaften und Rohstoffe, D-30631 Hannover 51, Germany 1998 62A 3 1597 1598 Copyright © 1998, The Mineralogical Society 1998