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CLAY MINERALOGY OF THE SEDIMENTARY IRON-NICKEL ORE OF AGIOS IOANNIS, NE BOEOTIA: NEW DATA AND IMPLICATION FOR DIAGENETIC MODIFICATIONS Christidis G.

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G.E. Christidis, N. Skarpelis
G.E. Christidis, N. Skarpelis

Abstract


The clay mineralogy of the sedimentary Fe-Ni deposit of Agios Ioannis and a Ni lateritic profile from Pavlos, both in Lokris area, Greece, is investigated. The clay fraction of samples from Agios Ioannis consists mainly of Fe-rich chlorite and Fe-smectite, with minor serpentine, hematite and goethite. Locally, disordered talc (kerolite and/or pimelite), illite, R1 mixed layer illite/smectite and gibbsite are identified. The lateritic profile has different composition and contains mainly Fe-rich smectite (nontronite and/or ferruginous montmorillonite) with minor serpentine, goethite, magnetite, and talc, whereas chlorite is absent. It is suggested that in the Agios Ioannis deposit chlorite has formed from smectite via R0 mixed layer chlorite/smectite with >80% chlorite layers. The source of Al is probably the diagenetic transformation of pedogenic goethite to hematite during burial. The lack of chlorite in the lateritic profile of Pavlos is attributed to the limited presence of goethite. Smectite is believed to be a major mineralogical constituent of the Fe-Ni ores of the broader Lokris area.


Keywords


Fe-Ni deposit; Ni-lateritic profile; Fe-smectite; Fe-chlorite; diagenesis; Agios Ioannis; NE Boeotia;

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References


Augustithis, S.S., 1962. Mineralogical and Geochemical Changes in the Diagenetic and Post-Diagenetic

Phases of the Ni-Cr-Iron Oolitic Deposit Larymna/Lokris, Greece. Chemie der Erde 22, 5-17.

Albandakis, N. 1974. The nickeliferous Fe-ores of Lokris and Euboia. Metal. Mining Annals, 19, 1-41 (in

Greek).

Albandakis, N. 1984. Ni-minerals in the deposits of the Sub-Pelagonian zone. Mineral Wealth, 31, 9-32

(in Greek).

Alevizos, G. 1997. Mineralogy, geochemistry and genesis of sedimentary nickeliferous Fe-ores of Lokris

(Central Greece). Unpubl. Ph.D Thesis, Tech. Univ. Crete, Greece, 245 p (in Greek).

Andoniades, P.A. & Vgenopoulos, A.G. 1987. Study of the nickeliferous bauxitic laterite of the area N.

Kokkino-Lokris. Metal. Mining Annals, 65, 51-60.

Andoniades, P.A. & Vgenopoulos, A.G. 1989. Some aspects of the genesis of Ni-Fe-Lateritic ore deposits

at Pissona and Katsikiza in the islad of Euboea, Greece. In: Augustithis, S.S. (ed) Metallogeny of

basic and ultrabasic rocks (regional presentations), Theophrastus Publications, Athens, 519-531.

Apostolikas, A.G. 2007. The Fe-Ni ore deposit of Kopais Basin, Boiotia Prefecture. Unpubl. Ph.D Thesis,

Technical University of Crete, Greece, 179 p (in Greek).

Chamley, H. 1989. Clay Sedimentology. Springer Verlag, Berlin, 623 p.

Chang, H.K., Mackenzie, F.T. & Schoonmaker, J. 1986. Comparisons between the diagenesis of dioctahedral

and trioctahedral smectite, Brazilian offshore basins. Clays Clay Miner., 34, 407-23.

Eliopoulos, D.G. & Economou-Eliopoulos, M. 2000. Geochemical and mineralogical characteristics of

XLIII, No 5 – 2560

Fe-Ni- and bauxitic-laterite deposits of Greece. Ore Geol. Rev., 16, 41-58.

Gates, W.P. 2005. Infrared spectroscopy and the chemistry of dioctahedral smectites. In: Kloprogge J.T.

(ed) The Application of Vibrational Spectroscopy to Clay Minerals and Layered Double Hydroxides,

CMS Workshop lectures, 13, 125-168.

Hower, J., Eslinger, E.V., Hower, M.E. & Perry, E.A. 1976. Mechanism of burial metamorphism of argillaceous

sediments. Geol. Soc. Amer. Bull., 87, 725-737.

Maksimovic, Z., Skarpelis, N. & Panto, G. 1993. Mineralogy and geochemistry of the rare earth elements

in the karstic nickel deposits of Lokris area, Greece. Acta Geol. Hungarica, 36, 331-342.

Manceau, A., Drits, V.A., Lanson, B., Chateigner, G., Wu, J., Huo, D., Gates,W.P. & Stucki, J.W. 2000.

Oxidation-reduction mechanisms of iron in dioctahedral smectites. I. Structural chemistry of oxidized

reference nontronites. Amer. Mineral., 85, 133-152.

McCarty, D.K., Sakharov, B.A. & Drits, V.A. 2008. Early diagenesis in Gulf Coast sediments: new insights

from XRD profile modeling. Clays Clay Miner., 359-379.

Meunier, A. 2005. Clays. Springer-Verlag, Berlin, 472 p.

Moore, D.M. & Reynolds, R.C. Jr 1997. X-Ray Diffraction and the Identification and Analysis of Clay

Minerals, 2nd ed. Oxford, New York, 378 p.

Rosenberg, F. 1984. Geochemie und Mineralogie lateritischer Nickel- und Eisenerze in Lokris und auf

Euböa, Griechenland. Unpubl. Ph.D Thesis, Univ. Hamburg, Germany, 129 p.

Rozenson, I. & Heller-Kallai, L. 1978. Reduction and oxidation of Fe3+ in dioctahedral smectites-III. Oxidation

of octahedral iron in montmorillonite. Clays Clay Miner., 26, 88-92.

Siegl, W. 1954. Mineralogische Untersuchung der Eisenertze von Lokris und Skyros. I.G.S.R., Athens,

-134.

Skarpelis, N. 1997. Eocene nickel laterite deposits in Greece and Albania. In: Papunen H. (ed) Mineral

Deposits: Research and Exploration. Where do they meet? A.A. Balkema, Rotterdam, 503-506.

Skarpelis, N. 1999. Lateritic weathering crusts as a source of ferruginous spheroidal particles of sedimentary

nickeliferous iron ores, Greece. Bull. Acad. Serbe Sci. & Arts, 39, 213-224.

Skarpelis, N. 2000. Sedimentary nickeliferous iron ores and lateritic weathering crusts in SW Balkan

Peninsula: mineralogical textural relationships and genesis. Proc. 1st Conf. Greek Comm. Econ. Geol.

Miner. Geoch., 398-412 (in Greek).

Skarpelis, N. 2005. Lateritization processes of ultramafic rocks in Cretaceous times: The fossil weathering

crusts of mainland Greece. J. Geoch. Explor., 88, 325-328.

Srodon, J. & Clauer, N. 2001. Diagenetic history of Lower Palaeozoic sediments in Pomerania (northern

Poland), traced across the Teisseyre–Tornquist tectonic zone using mixed-layer illite-smectite. Clay

Miner., 36, 15-27.

Srodon, J., Kotarba, M., Biron, A., Such, P., Clauer, N. & Wojtowicz, A. 2006. Diagenetic history of the

Podhale-Orava Basin and the underlying Tatra sedimentary structural units (Western Carpathians): evidence

from XRD and K-Ar of illite-smectite. Clay Miner., 41, 751-774.

Stucki, J.W. 2006. Properties and behaviour of iron in clay minerals. In: Bergaya, F., Theng, B.K.G. &

Lagaly, G. (eds), Handbook of Clay science, Elsevier, Amsterdam, 423-475.

Taylor, K.G. & Curtis, C.D. 1995. Stability and facies association of early diagenetic mineral assemblages:

an example from a Jurassic ironstone-mudstone succession, U.K. J. Sed. Res., 65, 358-368.

Valeton, I., Biermann, M., Reche, R. & Rosenberg, F. 1987. Genesis of nickel laterites and bauxites in

Greece during the Jurassic and Cretaceous, and their relation to Ultrabasic parent rocks. Ore Geol. Rev.

, 359-404.


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