To clarify the geological evolution of the samples trace elements of clinopyroxene were determined by inductively-coupled plasma mass spectrometry. Three to four spot analyses were collected by laser ablation using polished thick sections with a thickness of 0.15 to 0.4 mm. The ablation times for background and mineral were 20 and 25 seconds, respectively, and the spot diameter was between 40 and 65 µm.The reference material NIST SRM 612 and the SiO2 content from microprobe analysis served as external and internal standard, respectively. The reference material BCR-2G (USGS) was used as secondary standard to determine reproducibility (mostly <5 %) and accuracy (mostly <8 %). Data processing was carried out with the aid of the GLITTER software (van Achterbergh et al., 2000).The measurements were performed at the Universität Erlangen (Germany), GeoZentrum Nordbayern, in October 2021, and April 2025. Laser ablation inductively-coupled plasma mass spectroscopy (LA-ICPMS). UP193FX laser (New Wave Research) connected to an Agilent 7500i quadrupole ICPMS. Ablation time: sample 20 seconds, reference 25 seconds, spot diameter 30-50 µm. NIST SRM 612 as external standard, the SiO2 content from microprobe analysis served as internal standard.