DISTRIBUTION OF RARE EARTH ELEMENTS IN METAMORPHIC ROCKS OF PLATTENKALK GROUP AT CENTRAL CRETE, GREECE


Published: Jul 27, 2016
Keywords:
Cerium Lanthanum Allanite Crete
F. Stathogianni
E. Manoutsoglou
I. Staboliadis
O. Pantelaki
N. Kallithrakas-Kontos
Abstract

Within the metamorphic rocks of the Plattenkalk Group, in an occurrence at Tallaia Mountains, central Crete, light rare earth elements Cerium and Lanthanum are found. The studied rare earths are seen in an epidote group mineral, allanite. Scanning Electron Microscopy of the samples showed clearly the crystals of allanite (prekinematic crystals) and their grain size. Mineral processing was conducted for the size fractions: (<10 μm), (10-212 μm) and (212-1000 μm), according to the magnetic properties and grain size of allanite. After magnetic separation of the fraction (<10 μm) and (212-1000 μm) rare earths Ce and La were observed to have higher concentrations in the magnetic products. In conclusion, (according to the microscopic and mineral processing data) the optimum grain size for the beneficiation of allanite is the size fraction (10-212 μm).

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References
Arvanitidis, N. and Goodenough, K., 2014. Unlocking the potential of rare earth resources in
Europe, Proc. of the 1st European Rare Earth Resources Conference (ERES2014), Milos,
September 2014, 48-56.
Christofides, G., Perugini, D., Koroneos, A., Soldatos, T., Poli, G., Eleftheriadis, G., Del Moro, A.
and Neiva, A.M., 2007. Interplay between geochemistry and magma dynamics during
magma interaction: An example from the Sithonia Plutonic Complex (NE Greece), Lithos,
, 243-266.
Dornsiepen, U.F., Manutsoglu, E. and Mertmann, D., 2001. Permian Triassic Palaeogeography of
the external Hellenides, Palaeogeography, Palaoeclimatology, Palaeoecology, 172, 327-
Epting, M., Kudrass, H.R., Leppig, U. and Schafer, A., 1972. Geologie der Talea Ori, Kreta. Neues
Jahrbuch fur Geologie und Palaontologie, Monatshefte, 141, 259-285.
Henjes-Kunst, F., Altherr, R., Kreuzer, H. and Hansen, B.T., 1988. Disturbed U-Th-Pb systematics
of young zircons and uranothorites: The case of the Miocene Aegean granitoids (Greece),
Ghemical Geology (Isotope Geoscience Section), 73, 125-145.
Iliopoulos, Ι., 2005. Petrogenesis of metamorphic rocks of the island of Ikaria, PhD thesis, Patras,
(in greek).
Keay, S., Listerb, G. and Buickc, I., 2001. The timing of partial melting, Barrovian metamorphism
and granite intrusion in the Naxos metamorphic core complex, Cyclades, Aegean Sea,
Greece, Tectonophysics, 342, 275-312.
Κeramidas, Κ., Voutsas, G., Christofides, G. and Eleftheriadis, G., 2005. Magmatic epidote from
the Sithonia pluton (Chalkidiki): comparative geochemistry and crystal structure, Proc. of
the 2nd Conference of the Committee of Economic Geology, Mineralogy and Geochemsitry,
Thessaloniki, October 2005, 153-161.
Kock, S., Martini, R., Reischmann, T. and Stampfli, G.M., 2007. Detrital zircon and
micropalaeontological ages as new constraints for the lowermost tectonic unit (Talea Ori
unit) of Crete, Greece, Palaeogeography, Palaeoclimatology, Palaeoecology, 243(3-4), 307-
Krern, E. and Finger, F., 2007. Formation of monazite and rhabdophane at the expense of allanite
during Alpine low temperature retrogression of metapelitic basement rocks from Crete,
Greece: Microprobe data and geochronological implications, Lithos, 95, 130-147.
Kotopouli, C.N., Pe-Piper, G. and Katagas, C.G., 1991. The metamorphism and migmatization of
the Xanthe-Echinos metamorphic complex, Central Rhodope, Greece, Lithos, 27, 79-93.
Kotopouli, C.N., Pe-Piper, G. and Piper, D.J.W., 2000. Petrology and evolution of the Hercynian
Pieria Granitoid Complex (Thessaly, Greece): paleogeographic and geodynamic
implications, Lithos, 50, 137-152.
Manutsoglu, E., 1990. Tektonik und Metamorphose der Plattenkalk-Serie im Taygetos (Peloponnes,
Griechenland), Berliner geowissenschaftiche Abhandlungen, A 129, 82 pp.
Manutsoglu, E., Soujon, A., Reitner, J. and Dornsiepen, U.F., 1995. Relikte lithistider
Demospongiae aus der metamophen Plattenkalk-Serie der Insel Kreta (Griechenland) und
ihre palaeobathymetrische Bedeutund, N. Jb. Geol. Palaeont. Mh., 1995/4, 235-247.
Manutsoglu, E., Reitner, J., Mariolakos, D., Bellas, S.M. and Mariolakos, I., 1998.
Lithostratigraphische Gliederung und erster Nachweis von Relikten lithistider Demospongiae
aus der Plattenkalk-Gruppe des Taygetos Gebirges, Peloponnes/Griechenland, Zeitschrift der
Deutschen Geologischen Gesellschaft, 149, 91-103.
Manutsoglu, E., Soujon, A. and Jacobshagen, V., 2003. Tectonic structure and fabric development
of the Plattenkalk unit around the Samaria gorge, Western Crete, Greece, Zeitschrift der
Deutschen Geologischen Gesellschaft, 154(1), 85-100.
Manutsoglu, E., 2008. Allanite-bearing metamorphic sequence in Talea Ori, central Crete, Greece,
- Abstract and Poster, 86. Annual DMG Meeting 14 -17 September 2008, Berlin, Abstract
CD.
Mastrakas, Ν., 2006. Tinos pluton and associated skarn formations, PhD Thesis, Univ. Patras, 227
pp. (in Greek).
Melfos, V. and Voudouris P.Ch., 2012. Geological, Mineralogical and Geochemical Aspects for
Critical and Rare Metals in Greece, Minerals, 2, 300-317.
Mezger, K. and Okrusch, M., 1985. Metamorphism of the Variegated Sequence at Kallithea, Samos,
Greece, TMPM Tschermaks Min. Petr. Mitt., 34, 67-82.
Miller, D.P., Marschall, H.R. and Schumacher, J.C., 2009. Metasomatic formation and petrology of
blueschist-facies hybrid rocks from Syros (Greece): Implications for reactions at the slabmantle
interface, Lithos, 107, 53-67.
Mitropoulos, P., 1987. Primary allanite in andesitic rocks from the Poros Volcano, Greece,
Mineralogical Magazine, October l987, 51, 601-604.
Mposkos, E., Perraki, M. and Palikari, S., 2009. Single and multiphase inclusions in metapelitic
garnets of the Rhodope Metamorphic Province, NE Greece, Spectrochimica Acta, Part A, 73,
-483.
Papadopoulos, A., Christofides, G., Pe-Piper, G., Koroneos, A. and Papadopoulou, L., 2015.
Geochemistry of beach sands from Sithonia Peninsula (Chalkidiki, Northern Greece),
Mineralogy and Petrology, 109(1), 53-66.
Perdikatsis, V. and Papastavrou, S., 1993. Non-metamict allanite from Serifos Island, Cyclades
(Greece), Bull. Geol. Soc. Greece, XXVIII/2, 13-21, Athens, 1993.
Pe-Piper, G., Piper, D.J.W. and Matarangas, M., 2002. Regional implications of geochemistry and
style of emplacement of Miocene I-type diorite and granite, Delos, Cyclades, Greece, Lithos,
47-66.
Putlitz, B., Cosca, M.A. and Schumacher, J.C., 2005. Prograde mica 40Ar/39Ar growth ages
recorded in high pressure rocks (Syros, Cyclades, Greece), Chemical Geology, 214, 79-98.
Šarić, Κ., Cvetković, V., Romer R.L., Christofides, G. and Koroneos, A., 2009. Granitoids
associated with East Vardar ophiolites (Serbia, F.Y.R. of Macedonia and northern Greece):
Origin, evolution and geodynamic significance inferred from major and trace element data
and Sr-Nd-Pb isotopes, Lithos, 108, 131-150.
Soujon, A., Manutsoglu, E., Reitner, J. and Jacobshagen, V., 1995. Lithistide Demospongiae aus der
metamorphen Plattenkalk-Serie der Trypali Ori (Kreta/Griechenland), Berliner
geowissenschaftiche Abhandlungen, E16, 559-567.
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