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Occurrence of Fe3+ and formation process of precipitates within oxidized olivine phenocrysts in basalt lava from Kuroshima volcano, Goto islands, Nagasaki, Japan

Published online by Cambridge University Press:  02 January 2018

T. Ejima*
Affiliation:
Department of Materials Creation and Circulation Technology, Graduate School of Science and Engineering, Shimane University, Matsue 690-8504, Japan Mineral resources research group, National Institute of Advanced Industrial Science and Technology, Tsukuba Central #7, Tsukuba 305-8567, Japan
M. Akasaka
Affiliation:
Department of Materials Creation and Circulation Technology, Graduate School of Science and Engineering, Shimane University, Matsue 690-8504, Japan
T. Nagao
Affiliation:
Department of Earth Sciences, Graduate School of Science and Engineering, Yamaguchi University, Yamaguchi 753-8512, Japan
H. Ohfuji
Affiliation:
Geodynamics Research Center, Ehime University, Matsuyama 790-8577, Japan
*

Abstract

The oxidation state of Fe and precipitates within olivine phenocrysts from an olivine-basalt from Kuroshima volcano, Goto Islands, Nagasaki Prefecture, Japan, were determined using electron microprobe analysis, 57Fe Mössbauer spectroscopy, Raman spectroscopy and transmission electron microscopy, to examine the formation process of the Fe-bearing precipitates.

The average Fo content of the olivine phenocrysts is 76.2 mol.%. The olivine phenocrysts occasionally have precipitate minerals at their rims, especially on rims near vesicles. The 57Fe Mössbauer spectrum of olivine separates consists of two doublets assigned to Fe2+ at the octahedral M1 and M2 sites, and a Fe3+ doublet at the M1 and M2 sites. The Fe2+:Fe3+ ratio is 90(5):10(1). The precipitates at the rims of the olivine phenocrysts consistof magnetite and enstatite showing coaxial relations with host olivine, and grow parallel to the olivine c axis. Moreover, clusters consisting of nanoscale domains of a few tens of nm in size occur in the host olivine. Their rounded form and appearance in transmission electron microscope images are similar to those of the magnetite precipitates, but they have an olivine structure and can be regarded as embryos of magnetite within the olivine.

The oxidation process of olivine phenocrysts under cooling conditions is: (1) formation of magnetite embryos on the rims of olivinephenocrysts; (2) formation of enstatite-like pyroxene domains by depletion of Fe in olivine due to the generation of magnetite embryos; (3) crystallization of magnetite and enstatite-like pyroxene precipitates.

Type
Research Article
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 2015

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References

Akasaka, M. and Shinno, I. (1992) Mössbauer spectros-copy and its recent application to silicate mineralogy. Journal of the Mineralogical Society of Japan, 21, 320.CrossRefGoogle Scholar
Ashworth, J.R. and Chambers, A.D. (2000) Symplectic reaction in olivine and the controls of intergrowth spacing in symplectites. Journal of Petrology, 41, 285304.CrossRefGoogle Scholar
Banfield, J.F., Veblen, D.R. and Jones, B.F. (1990) Transmission electron microscopy of subsolidus oxidation and weathering of olivine. Contributions to Mineralogy and Petrology, 106, 110123.CrossRefGoogle Scholar
Banfield, J.F., Dyar, M.D. and McGuire, A.V (1992) The defect micro structure of oxidized mantle olivine from Dish Hill, California. American Mineralogist, 77, 977986.Google Scholar
Blondes, M.S., Brandon, M.T., Reiners, P.W., Page, F.Z. and Kite, N.T. (2012) Generation of forsterite olivine (Fo99. 8) by subsolidus oxidation in basaltic flows. Journal of Petrology, 53, 971984.CrossRefGoogle Scholar
Caroff, M., Maury, R.C., Cotten, J. and Clément, J.P. (2000) Segregation structures in vapor-differentiated basaltic flows. Bulletin of Volcanology, 62, 171187.CrossRefGoogle Scholar
Champness, P.E. (1970) Nucleation and growth of iron oxides in olivines, (Mg,Fe)2SiO4. Mineralogical Magazine, 37, 790800.CrossRefGoogle Scholar
Champness, P.E. and Gay, P. (1968) Oxidation of olivines. Nature, 218, 157158.CrossRefGoogle Scholar
Clément, J.P., Caroff, M., Dudoignon, P., Launeau, P., Bohn, M., Cotten, J., Blais, S. and Guille, G. (2007) A possible link between gabbros bearing high temperature iddingsite alteration and huge pegmatoid intrusions: The Society Islands, French Polynesia. Lithos, 96, 524542.CrossRefGoogle Scholar
Dollase, W.A. (1986) Correction of intensities for preferred orientation in powder diffractometry: application of the March model. Journal of Applied Crystallography, 19, 267272.CrossRefGoogle Scholar
Downs, R.T. (2006) The RRUFF Project: an integrated study of the chemistry, crystallography, Raman and infrared spectroscopy of minerals. Program and Abstracts of the 19th General Meeting of the International Mineralogical Association in Kobe, Japan, O03—13.Google Scholar
Edwards, A.B. (1938) The formation of iddingsite. American Mineralogist, 23, 277281.Google Scholar
Ejima, T., Akasaka, M. and Ohfuji, H. (2011) Oxidation state of Fe in olivine in a lherzolite xenolith from Oku district, Oki-Dogo Island, Shimane Prefecture, Japan. Journal of Mineralogical and Petrological Sciences, 106, 246254.CrossRefGoogle Scholar
Ejima, T., Akasaka, M., Nagao, T. and Ohfuji, H. (2012) Oxidation state of Fe in olivine in andesitic scoria from Kasayama volcano, Hagi, Yamaguchi Prefecture, Japan. Journal of Mineralogical and Petrological Sciences, 107, 215225.CrossRefGoogle Scholar
Ejima, T., Akasaka, M., Nagao, T. and Ohfuji, H. (2013) Oxidation states of Fe and precipitates within olivine from orthopyroxene-olivine-clinopyroxene andesite lava from Kasayama volcano, Hagi, Yamaguchi, Japan. Journal of Mineralogical and Petrological Sciences, 108, 2536.CrossRefGoogle Scholar
Fawcett, J.J. (1965) Alteration products of olivine and pyroxene in basalt lavas from the Isle of Mull. Mineralogical Magazine, 35, 5568.CrossRefGoogle Scholar
Gay, P. and Le Maître, R.W. (1961) Some observations on “iddingsite”. American Mineralogist, 46, 92111.Google Scholar
Goff, F. (1996) Vesicle cylinders in vapor-differentiated basalt flows. Journal of Volcanology and Geothermal Research, 71, 167-185.CrossRefGoogle Scholar
Goode, A.D.T. (1974) Oxidation of natural olivines. Nature, 248, 500501.CrossRefGoogle Scholar
Haggerty, S.E. and Baker, I. (1967) The alteration of olivine in basaltic and associated lavas. Contributions to Mineralogy and Petrology, 16, 233257.CrossRefGoogle Scholar
Hwang, S.L., Yui, T.F., Chu, H.T., Shen, P. Iizuka, Y., Yang, H.Y., Yang, J. and Xu, Z. (2008) Hematite and magnetite precipitates in olivine from the Sulu peridotite: A result of dehydrogenation-oxidation reaction of mantle olivine? American Mineralogist, 93, 10511060.CrossRefGoogle Scholar
Iishi, K., Torigoe, K. and Han, X.J. (1997) Oriented precipitate complexes in iron-rich olivines produced experimentally in aqueous oxidizing environment. Physics and Chemistry of Minerals, 25, 814.CrossRefGoogle Scholar
Irifune, T., Isshiki, M. and Sakamoto, S. (2005) Transmission electron microscope observation of the high-pressure form of magnesite retrieved from laser heated diamond anvil cell. Earth and Planetary Science Letters, 239, 98105.CrossRefGoogle Scholar
Izumi, F. and Momma, K. (2007) Three-dimensional visualization in powder diffraction. Solid State Phenomena, 130, 1520.CrossRefGoogle Scholar
Johnston, A.D. and Stout, J.H. (1984) Development of orthopyroxene-Fe/Mg ferrite symplectites by continuous olivine oxidation. Contributions to Mineralogy and Petrology, 88, 196202.CrossRefGoogle Scholar
Kan, X. and Coey, J.M.D. (1985) Mössbauer spectra, magnetic and electrical properties of laihunite, a mixed valence iron olivine mineral. American Mineralogist, 70, 576580.Google Scholar
Khisina, N.R., Khramov, D.A., Kolosov, M.V., Kleschev, A. A and Taylor, L.A. (1995) Formation of ferriolivine and magnesioferrite from Mg-Fe-olivine: reactions and kinetics of oxidation. Physics and Chemistry of Minerals, 22, 241250.CrossRefGoogle Scholar
Kohlstedt, D.L. and Vander Sande, J.B. (1975) An electron microscopy study of naturally occurring oxidation produced precipitates in iron-bearing olivines. Contributions to Mineralogy and Petrology, 53, 1324.CrossRefGoogle Scholar
Koltermann, M. (1962) Der thermische zerfall fayalithal-tiger olivine bei hohen temperaturen. Neues Jahrbuch Mineral Monatshelfte, 181-191.Google Scholar
Kondoh, S., Kitamura, M. and Morimoto, N. (1985) Synthetic laihunite ([ZlxFe2J_3XFe3JxSi04), an oxidation product of olivine. American Mineralogist, 70, 737746.Google Scholar
Lemaitre, O., Brousse, R., Goni, J. and Remond, G. (1966) Sur l'importance de l'apport de fer dans la transformation de Polivine en iddingsite. Bulletin de la Société Française de Minéralogie et de Crystallographie, 89, 477483.Google Scholar
Matsui, K., Kamada, Y and Hajime, K. (1977) Geology of the Tomie district. Quadrangle Series, 1: 50,000. Geological survey of Japan, AIST, 1 sheet.Google Scholar
Meyer, M. and Rüffler, R. (2002) Conversion electron Mössbauer spectroscopic study of subsolidus oxidation of olivine. Hyperfine Interactions, 141/142, 351-355.Google Scholar
Nagaoka, S. and Furuyama, K. (2004) Eruptive history of the Onidake volcano group on Fukue island, western Japan. Journal of Geography, 113, 349382.CrossRefGoogle Scholar
Nitsan, U. (1974) Stability field of olivine with respect to oxidation and reduction. Journal of Geophysical Research, 79, 706711.CrossRefGoogle Scholar
Putnis, A. (1979) Electron petrography of high-temperature oxidation in olivine from the Rhum Layered Intrusion. Mineralogical Magazine, 43, 293296.CrossRefGoogle Scholar
Schaefer, M.W. (1985) Site occupancy and two-phase character of “ferrifayalite”. American Mineralogist, 70, 729736.Google Scholar
Schandl, E.S., Gorton, M.P. and Wicks, F.J. (1990) Mineralogy and geochemistry of alkali basalts from Maud Rise, Weddell Sea, Antarctica. Pp. 5-14 in: Proceedings of the Ocean Drilling Program, Scientific Results, 113, (Barker, P.F., Kennett, J.P., et al.). College Station, Texas (Ocean Drilling Program), USA.Google Scholar
Schenato, F., Formoso, M.L.L., Dudoignon, P., Meunier, A., Proust, D. and Mas, A. (2003) Alteration processes of athick basaltic lava flow of the Paraná Basin (Brazil): petrographic and mineralogical studies. Journal of South American Earth Sciences, 16, 423444.CrossRefGoogle Scholar
Shinno, I. (1981) A Mössbauer study of ferric iron in olivine. Physics and Chemistry of Minerals, 7, 9195.CrossRefGoogle Scholar
Shinno, I., Hayashi, M. and Kuroda, Y (1974) A Mössbauer studies of natural olivines. Mineralogical Journal, 7, 344358.CrossRefGoogle Scholar
Tamada, O., Shen, B. and Morimoto, N. (1983) The crystal structure of laihunite (C]o.4oFea8oFeoioSi04), — nonstoichiometric olivine-type mineral. Mineralogical Journal, 8, 382391.CrossRefGoogle Scholar
Welch, S.A. and Banfield, J.F (2002) Modification of olivine surface morphology and reactivity by micro-bial activity during chemical weathering. Geochimica et Cosmochimica Acta, 66, 213221.CrossRefGoogle Scholar
Young, R.A. (1993) Introduction to the Rietveld method. Pp. 1-38 in: The Rietveld Method (Young, R.A., editor). Oxford Science Publications, Oxford, UK.Google Scholar