CHEMICAL COMPOSITION OF Ca-Mg-Sr CARBONATES AND THE STABLE ISOTOPE δ13C STUDY: THE KOVDOR MASSIF SHOWCASE (KOLA REGION, NW RUSSIA)

M. Huber, S. Hałas, A.V. Mokrushin, Yu.N. Neradovsky, L. Lata, M. Sikorska-Jaworowska, S. Skupiński
2018 Труды Ферсмановской научной сессии ГИ КНЦ РАН  
The current study provides new data on δ 13 C of carbonates from the REE-rich Paleozoic Kovdor massif. It is an ultramafic, alkaline and carbonatite intrusion in the north-eastern part of the Baltic Shield (Kola region, Russia). The carbonates have been sampled from the main outcrop of the phoscoritecarbonatite Kovdor massif. According to Rb-Sr and U-Pb data, its age is 420-360 Ma [3, 10] . The massif was formed in the active zone of a continental type as a result of hot spot plutonism on the
more » ... la Peninsula. The selected ore minerals have been analyzed with optical and electron microscopy (Hitachi SU6600 with EDS attachment), whereas δ 13 C has been determined in the Mass Spectrometry Laboratory, Maria Curie-Skłodowska University. The works aim at studying the stable isotope in representative Ca-Mg-Sr carbonatites sampled by V.V. Balagansky in 2003. They have been analyzed using ICP-OAS and XRF in the Department of Soil Science in order to estimate metal concentrations.
doi:10.31241/fns.2018.15.097 fatcat:7v47rthjojfohjzuz5rn6yhiea