@article{3068643,
    title = "REE-enriched skarns in collisional settings: The example of Xanthi's Fe-skarn, Rhodope Metallogenetic Massif, Northern Greece",
    author = "Fitros, M. and Tombros, S.F. and Kokkalas, S. and Kilias, S.P. and Perraki, M. and Skliros, V. and Simos, X.C. and Papaspyropoulos, K. and Avgouropoulos, G. and Williams-Jones, A.E. and Zhai, D. and Hatzipanagiotou, K.",
    journal = "LITHOS - AMSTERDAM",
    year = "2020",
    volume = "370-371",
    publisher = "Elsevier B.V.",
    issn = "0024-4937",
    doi = "10.1016/j.lithos.2020.105638",
    keywords = "cerium;  collision zone;  enrichment;  epidote;  iron;  metallogenesis;  metasomatism;  mineralization;  rare earth element;  remobilization;  skarn;  thermodynamics, Greece",
    abstract = "The garnet-epidote zone in the Xanthi Fe-skarn at the Rhodope Metallogenetic Massif, northern Greece, includes noteworthy cerium mineralization manifested by the presence of epidote-(Ce) containing up to ~130,000 ppm ΣREE and ~ 87,000 ppm Ce. The REE skarn represents a late evolutionary phase of the Xanthi's Fe-skarn in a collisional setting.- The epidote-(Ce) was deposited under pressures of ~1000 bars, at temperatures of ~345° to ~400 °C, from an almost pH neutral, saline, Ce-bearing, heterogeneous trapped, skarn-forming fluids with elevated log[αREE3+/(αH+)3] values. Thermodynamic two-stage modeling suggests that Ca metasomatism (e.g., decrease of the logαCa2+(aq) values) coupled with Ce fractionation (e.g., increase of the logαCe(CO3)+(aq) values) of the skarn-forming fluids led to the formation of epidote-(Ce). The major mechanism for the Ce-enrichment in the metasomatic fluids was the remobilization of the REE from the I-type granodiorite of Xanthi, in a back-arc setting due to subduction retreat. © 2020 Elsevier B.V."
}