“…Carbonatite magmatism is mainly associated with intraplate continental tectonic settings characterized by significant extension and even rifting, with a temporal distribution from Archean to the present (e.g., Jones et al., 2013; Woolley & Kjarsgaard, 2008; Yaxley et al., 2022), and currently, Oldoinyo Lengai (Tanzania) represents the only active carbonatite volcano, characterized by a natrocarbonatitic affinity (e.g., Berkesi et al., 2020). The growing number of carbonatite occurrences from unconventional tectonic settings, such as oceanic contexts (e.g., Carnevale et al., 2021; Day, 2022; Doucelance et al., 2010; Mata et al., 2010; Schmidt & Weidendorfer, 2018) or subduction zones (e.g., D’Orazio et al., 2007; Li et al., 2018; Lustrino et al., 2019, 2020), received considerable attention during last two decades, given their importance as source of rare elements such as La, Ce, Pr, and Nd (Anenburg et al., 2021; Verplanck et al., 2016), and, most importantly, because they provide meaningful information on the geochemical cycle of carbon and mantle metasomatism as well (e.g., Bouabdellah et al., 2010; Horton, 2021).…”