Published: Ιαν 1, 2007
Silicic volcanics magma mixing mineral chemistry
K. Kitsopoulos

Amphibole bearing volcanic products in Santorini are restricted to the early volcanic activity expressed in the Akrotiri peninsula. This fact distinguishes these early products from the rest of the volcanic rocks of Santorini. The Fe-Mg-rich mineral phases, associated to the Akrotiri silicic pyroclastics which were analysed can be classified as Mg-Fe rich type of amphibole. This type of amphibole has not been reported before in volcanic rocL· from the South Aegean Volcanic Arcr. The presence of such a high Fe-Mg mineral phase in silicic pyroclastics in Santorini is constant with the involvement of primitive, mantle derived, mafic magmas, with some considerable water content, and which have been differentiated, before they are mixed with more silicic magmas at a shallower crustal level.

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  • Mineralogy-Petrology-Geochemistry-Economic Geology
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Burke, E.A.J., and Leake, B.E., 2005. "Named Amphiboles": A new category of amphiboles recognized by the International Mineralogical Association (IMA) and a defined sequence order for the use of prefixes in amphibole names, American Mineralogist, 90, 516-517.
Carmichael, I.S.E., Turner, C.J., and Verhoogen, J., 1974. Igneous Petrology, McGraw-Hill, New York, 730pp.
Davis, E., Gartzos, E., and Dietrich, V.J., 1998. Magmatic Evolution of the Pleistocene Akrotiri Volcanoes. In R. Casale, et al. (eds), Proceedings of the 2nd workshop, "The European Laboratory Volcanoes", Santorini, 2-4 May 2-4 1996, 49-68.
Dietrich, V.J., Davis, E., and Gartzos, E., 1998. Amphibole in rhyodacites and dacites from the Akrotiri volcanoes and the complexities of discontinuous fractional crystallization. In R. Casale, et al (eds), Proceedings of the 2nd workshop, "The European Laboratory Volcanoes", Santorini, 2-4 May 2-4 1996, 69-80.
Druitt, T.H., Edwards, L., Mellors, R.M., Pyle, D.M., Sparks, R.S.J., Lanphere, M., Davies, M., and Barriero, B., 1999. Santorini Volcano, Geological Society, London, Memoirs, 19, 165pp.
Evans, B.W., and Ghiorso, M.S., 1995. Thermodynamics and petrology of cummingtonite, American Mineralogist, 80, 649-663.
Fouque, F., 1879. Santorin et ses Eruptions, Paris, G. Masson, 440pp.
Gartzos, E., Dietrich, V.J., and Davis, E., 1999. Amphibole-plagioclase fractional crystallization and magma mixing as major differentiation processes in the Akrotiri Volcanic Complex, Santorini, Greece, Schweiz. Mineral. Petrogr. Mitt., 79 (2), 231-262.
Huijsmans, J.P.P., Barton, M., and Salters, V.J.M., 1988. Geochemistry and evolution of calcalkaline volcanic complex of Santorini, Aegean Sea, Greece, J. Volcanology Geothermal. Research, 34, 283-306.
Kitsopoulos, K.P., 1995. The mineralogy, geochemistry, physical properties and possible industrial applications of volcanic zeolitic tuffs from Santorini and Polyegos islands, Greece, PhD Thesis, University of Leicester, 442pp.
Kitsopoulos, K.P., 1996. Zeolitization of the Akrotiri pre-caldera pyroclastics from Santorini island, Greece. Implications for existing zeolitization models as applied with volcaniclastic materials, GSA Abstracts with Programs 1996, 28 (7), A-104.
Kitsopoulos, K.P., Scott, P.W., Jeffrey, CA., and Marsh, N.G., 2001. The mineralogy and geochemistry of zeolite-bearing volcanics from Akrotiri (Santorini Island) and Polyegos (Milos group of Islands), Greece. Implications for geochemical classification diagrams, Bull. Geol. Soc. Greece, XXXIV/3, 859-865.
Leake, B.E., 1978. Nomenclature of Amphiboles, Mineralogical Magazine, 42, 533-569.
Leake, B.E., Woolley, A.R., Arps, C.E.S., Birch, W.D., Gilbert, M.C., Grice, J.D., Hawthorne, F.C., Kato, Α., Kisch, HJ., Krivovichev, V.G., Linthout, Κ., Laird, J., Mandarino, J.A., Maresch, W.V., Nickel, E.H., Rock, N.M.S., Schumacher, J.C., Smith, D.C., Stephenson, N.C.N., Ungaretti, L., Whittaker, E.J.W., and Youzhi, G., 1997. Nomenclature of amphiboles: Report of the Subcommittee on Amphiboles of the International Mineralogical Association, Commission on New Minerals and Mineral Names, American Mineralogist, 82, 1019-1037.
Leake, B.E., Woolley, A.R., Birch, W.D., Burke, E.A.J., Ferraris, G., Grice, J.D., Hawthorne, F.C., Kisch, H.J., Krivovichev, V.G., Schumacher, J.C., Stephenson, N.C.N., and Whittaker, E.J.W., 2004. Nomenclature of amphiboles: additions and revisions to the International Mineralogical Association's amphibole nomenclature, American Mineralogist, 89, 883-887.
Mitropoulos, P. and Tarney, J., 1992. Significance of mineral composition variations in the Aegean Island Arc, Journal Volcanology Geothermal Research, 51, 283-303.
Mogessie, Α., Ettinger, K., Leake, B.E., and Tessadri, R., 2001. AMPH-IMA97: a hypercard program to determine the name of an amphibole from electron microprobe and wet analyses, Computers and Geosciences, 27, 1169-1178.
Mortazavi, M., and Sparks, R.S.J., 2004. Origin of rhyolite and rhyodacite lavas and associated mafic inclusions of Cape Akrotiri, Santorini: the role of wet basalt in generating calcalkaline silicic magmas, Contributions Mineralogy and Petrology, 146, 397-413.
Nickel, E.H., and Grice, J.D., 1998. The IMA Commission on New Minerals and Mineral Names: procedures and guidelines on mineral nomenclature, Canadian Mineralogist, 36, 913-926.
Nicholls, I.A., 1971. Petrology of Santorini volcanic rocks, J Petrol., 12, 67-119.
Oberti, R., Carnara, F., Ottolini, L., and Caballero, J.M., 2003. Lithium in amphiboles: detection, quantification and incorporation mechanisms in the compositional space bridging sodic and BLi amphibole, European Journal of Mineralogy, 15, 309-319.
Pichler, H., and Kussmaul, S., 1972. The cale-alcaline volcanics rocks of the Santorini Group (Aegean Sea, Greece), N. J. Miner. Abh., 116, 268-307N.
Tsolis-Katagas, P., and Katagas, C, 1989. Zeolites in Pre-Caldera pyroclastic rocks of the Santorini Volcano, Aegean Sea, Greece, Clays and Clay Minerals, 37, 497-510.
Winchester, J.A., and Floyd, P.A., 1977. Geochemical discrimination of different magma series and their differentiation products using immobile elements, Chemical Geology, 20, 325-343.
Wood, B.J., and Carmichael, I.S.E,, 1973. Ρ,οΐ3ι, PH2O> and the occurrence of cummingtonite in volcanic rocks, Contributions Mineralogy Petrology, 40, 149-158.
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