Cryptic metasomatism in the upper mantle beneath Southeastern Austria: A laser ablation microprobe-ICP-MS study

摘要: Upper mantle xenoliths from the classical location, Kapfenstein, Styria, as well Fehring, and Tobaj, Burgenland, have been analyzed by laser ablation microprobe inductively-coupled plasma mass spectrometry (LAM-ICP-MS). At all locations spinel lherzolite is predominant xenolith type thus our sample contains nine lherzolites only one harzburgite (from richest Ka 167). All rocks protogranular to — porphyroclastic transitional textures. Mineral compositions are typical for fertile upper with 0.89 〈mg〉 0.92 silicates 0.10 〈cr〉 0.12 (0.18 harzburgite). The minerals equilibrated respect major, minor trace elements, except clinopyroxenes in Tobaj (To 100) Fehring (Feh 002) which variable incompatible element contents.