Tamás Mikes, Klaus Simon, Hilmar von Eynatten (GZG, Universität Göttingen)
István Oláh (ELTE Budapest, Dept. of Petrology/Geochemistry)

Talk by Tamás Mikes in MN 16, on Tuesday, 23rd January 2007, 16:15h

Quantification of element concentrations in mineral or melt inclusions from LA-ICP-MS analyses normally requires independent determination of an inner standard element in that inclusion by a different technique (typically electron microprobe). Yet in sedimentary provenance studies it is an elaborate task to prepare the necessary amount of grains for such surficial analyses.
We selected the case of the Miocene clastics of the Pannonian Basin, and used LA-ICP-MS to examine the trace element budget in individual, detrital corundum crystals and their rutile inclusions, taking the advantage that both minerals have a very simple main element matrix.
In the talk, a novel use of near-stoichiometric mineral compositions for the LA-ICP-MS inner standardization procedure will be evaluated through the mineral chemical data. We will examine if the in-situ, single-grain Zr-in-rutile thermometer is applicable on this rare type of inclusions, and how the obtained data compare with independent results from the electron microprobe.