Abstract
Compression behaviors of two Al-rich phases in the lower mantle, hexagonal new aluminum-rich (NAL) phase and its high-pressure polymorph Ca-ferrite-type (CF) phase, were examined for identical Na0.4Mg0.6Al1.6Si0.4O4 (40 % NaAlSiO4–60 % MgAl2O4) composition. The volumes of the NAL and CF phases were obtained at room temperature up to 31 and 134 GPa, respectively, by a combination of laser-annealed diamond-anvil cell techniques and synchrotron X-ray diffraction measurements. Fitting of the third-order Birch–Murnaghan equation of state to such pressure–volume data yields bulk modulus K 0 = 199(6) GPa at 1 bar and its pressure derivative K 0′ = 5.0(6) for the NAL phase and K 0 = 169(5) GPa and K 0′ = 6.3(3) for the CF phase. These results indicate that the bulk modulus increases from 397 to 407 GPa across the phase transition from the NAL to CF phase at 43 GPa, where the NAL phase completely transforms into the CF phase on Na0.4Mg0.6Al1.6Si0.4O4. Density also increases by 2.1 % across the phase transition.
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Anderson OL, Isaak DG, Yamamoto S (1989) Anharmonicity and the equation of state for gold. J Appl Phys 65:1534–1543
Dubrovinsky LS, Dubrovinskaia NA, Prokopenko VB, Le Bihan T (2002) Equation of state and crystal structure of NaAlSiO4 with calcium-ferrite type structure in the conditions of the lower mantle. High Press Res 22:495–499
Fei Y, Ricolleau A, Frank M, Mibe K, Shen G, Prakapenka V (2007) Toward an internally consist pressure scale. Proc Natl Acad Sci USA 104:9182–9186
Funamori N, Jeanloz R, Nguyen JH, Kavner A, Cadwell WA (1998) High-pressure transformation in MgAl2O4. J Geophys Res 103:20813–20818
Funamori N, Jeanloz R, Miyajima N, Fujino K (2000) Mineral assemblages of basalt in the lower mantle. J Geophys Res 105:26037–26043. doi:10.1029/2000JB900252
Gasparik T, Tripathi A, Parise J (2000) Structure of a new Al-rich phase, [K, Na]0.9[Mg, Fe]2[Mg, Fe, Al, Si]6O12. Am Mineral 85:613–618
Guignot N, Andrault D (2004) Equations of state of Na-K-Al host phase and implications for MORB density in the lower mantle. Phys Earth Planet Inter 143–144:107–128
Hammersley AP (1998) Fit2d: V9.129 reference manual v3.1. Inter Rep ESRF98HA01, ESRF, Grenoble
Hirose K, Fei Y (2002) Subsolidus and melting phase relations of basaltic composition in the uppermost lower mantle. Geochim Cosmochim Acta 66:2099–2108
Hirose K, Fei Y, Ma Y, Mao HK (1999) The fate of subducted basaltic crust in the Earth’s lower mantle. Nature 397:53–56
Hirose K, Takafuji N, Sata N, Ohishi Y (2005) Phase transition and density of subducted MORB crust in the lower mantle. Earth Planet Sci Lett 237:239–251
Imada S, Hirose K, Ohishi Y (2011) Stabilities of NAL and Ca-ferrite-type phases on the join NaAlSiO4-MgAl2O4 at high pressure. Phys Chem Miner 38:557–560
Irifune T, Ringwood AE (1993) Phase transformations in subducted oceanic crust and buoyancy relationships depths of 600–800 km in the mantle. Earth Planet Sci Lett 117:101–110
Irifune T, Naka H, Sanehira T, Inoue T, Funakoshi K (2002) In situ X-ray observations of phase transitions in MgAl2O4 spinel to 40 GPa using multianvil apparatus with sintered diamond anvils. Phys Chem Miner 29:645–654
Kesson SE, Fitz GJD, Shelley JMG (1994) Mineral chemistry and density of subducted basaltic crust at lower-mantle pressures. Nature 372:767–769
Kojitani H, Iwabuchi T, Kobayashi M, Miura H, Akaogi M (2011) Structure refinement of high-pressure hexagonal aluminous phases K1.00Mg2.00Al4.80Si1.15O12 and Na1.04Mg1.88Al4.64Si1.32O12. Am Mineral 96:1248–1253
Miura H, Hamada Y, Suzuki T, Akaogi M, Miyajima N, Fujino K (2000) Crystal structure of CaMg2Al6O12, a new Al-rich high pressure form. Am Minaral 85:1799–1803
Miyajima N, Fujino K, Funamori N, Kondo T, Yagi T (1999) Garnet-perovskite transformation under conditions of the earth’s lower mantle: an analytical transmission electron microscopy study. Phys Earth Planet Inter 116:117–131
Miyajima N, Yagi T, Hirose K, Kondo T, Fujino K, Miura H (2001) Potential host phase of aluminum and potassium in the Earth’s lower mantle. Am Mineral 86:740–746
Oguri K, Funamori N, Uchida T, Miyajima N, Yagi T, Fujino K (2000) Post-garnet transition in a natural pyrope: a multi-anvil study based on in situ X-ray diffraction and transmission electron microscopy. Phys Earth Planet Inter 122:175–186
Ohishi Y, Hirao N, Sata N, Hirose K, Tanaka M (2008) Highly intense monochromatic X-ray diffraction facility for high-pressure research at SPring-8. High Press Res 28:163–173
Ono S, Ito E, Katsura T (2001) Mineralogy of subducted basaltic crust (MORB) from 25 to 37 GPa, and chemical heterogeneity of the lower mantle. Earth Planet Sci Lett 190:57–63
Ono S, Hirose K, Isshiki M, Mibe K, Saito Y (2002a) Equation of state of hexagonal aluminous phase in basaltic composition to 63 GPa at 300 K. Phys Chem Miner 29:527–531
Ono S, Hirose K, Kikegawa T, Saito Y (2002b) The compressibility of a natural composition calcium ferrite aluminous phase to 70 GPa. Phys Earth Planet Inter 131:311–318
Ono A, Akaogi M, Kojitani H, Yamashita K, Kobayashi M (2009) High-pressure phase relations and thermodynamic properties of hexagonal aluminous phase and calcium-ferrite phase in the systems NaAlSiO4–MgAl2O4 and CaAl2O4–MgAl2O4. Phys Earth Planet Inter 174:39–49
Perrillat JP, Ricolleau A, Daniel I, Fiquet G, Mezouar M, Guignot N, Cardon H (2006) Phase transformations of subducted basaltic crust in the upmost lower mantle. Phys Earth Planet Inter 157:139–149
Ricolleau A, Fiquet G, Addad A, Menguy N, Vanni C, Perrillat JP, Daniel I, Cardon H, Guignot N (2008) Analytical transmission electron microscopy study of a natural MORB sample assemblage transformed at high pressure and high temperature. Am Mineral 93:144–153
Ricolleau A, Perrillat JP, Fiquet G, Daniel I, Matas J, Addad A, Menguy N, Cardon H, Mezouar M, Guignot N (2010) Phase relations and equation of state of a natural MORB: implications for the density profile of subducted oceanic crust in the Earth’s lower mantle. J Geophys Res 115:B08202. doi:10.1029/2009JB006709
Shim SH, Duffy TS, Takemura K (2002) Equation of state of gold and its application to the phase boundaries near 660 km depth in Earth’s mantle. Earth Planet Sci Lett 203:729–739
Shinmei T, Sanehira T, Yamazaki D, Inoue T, Irifune T, Funakoshi K, Nozawa A (2005) High-temperature and high-pressure equation of state for the hexagonal phase in the system NaAlSiO4–MgAl2O4. Phys Chem Miner 32:594–602
Vanpeteghem CB, Ohtani E, Litasov K, Kondo T, Watanuki T, Isshiki M, Takemura K (2003) The compressibility of hexagonal Al-rich NAL phase: similarities and differences with calcium ferrite-type (CF) phase with implications for the lower mantle. Phys Earth Planet Inter 138:223–230
Yutani M, Yagi T, Yusa H, Irifune T (1997) Compressibility of calcium ferrite-type MgAl2O4. Phys Chem Miner 24:340–344
Acknowledgments
We thank S. Tateno, H. Ozawa, and E. Sugimura for their support in synchrotron experiments. Comments from M. Akaogi and an anonymous referee were helpful to improve the manuscript. XRD measurements were performed at SPring-8 (proposal no. 2010B0087 and 2011A0087).
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Imada, S., Hirose, K., Komabayashi, T. et al. Compression of Na0.4Mg0.6Al1.6Si0.4O4 NAL and Ca-ferrite-type phases. Phys Chem Minerals 39, 525–530 (2012). https://doi.org/10.1007/s00269-012-0508-x
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DOI: https://doi.org/10.1007/s00269-012-0508-x