Dear all, We have a Kiel II line/Finnigan MAT for carbonate extraction. Who measured dolomite/ankerite with such a line and has some experience concerning reaction time/ reaction temperature for these minerals? Ana-Voica Bojar ---------------------------------------------------------------- Dr. Ana-Voica Bojar Institut für Geologie und Paläontologie Heinrichstraße 26, A-8010 Graz, Austria. Tel: ++43/316/380/8725 Fax: ++43/316/380/9870