Secondary ion mass spectrometry: comparison of meteorite and vulcanite

The aim of the work was chemical and isotopic characterization of a meteorite sample in comparison with volcanic rock using secondary ion mass spectrometry (SIMS). The objects examined were extraterrestrial samples; inside the Kosice meteorite, its fusion layer and volcanic rock from Mauna Loa volcano. In the measured spectra in both positive and negative polarity, chemical composition of individual samples was identified and consequently intensity tables for selected fragments and isotopes of elements were constructed. Isotope differences for ²⁸Si, ²⁹Si, and ³⁰Si were found between volcanic stone of terrestrial origin and Kosice meteorite. Based on the acquired knowledge it is possible to confirm that secondary ion mass spectrometry is a suitable method for the analysis of meteorite samples. (authors)