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Equation of state of hercynite, FeAl2O4, and high-pressure systematics of Mg-Fe-Cr-Al spinels

  • F. Nestola (a1), B. Periotto (a1), C. Anzolini (a2), G. B. Andreozzi (a2), A. B. Woodland (a3), D. Lenaz (a4), M. Alvaro (a1) and F. Princivalle (a4)...
Abstract

In this work a single crystal of synthetic hercynite, FeAl2O4, was investigated by X-ray diffraction up to 7.5 GPa and at room temperature, in order to determine its pressure–volume equation of state. The unit-cell volume decreases non-linearly with a reduction of 3.4% (i.e. 18.43 Å3). The pressure–volume data were fitted to a third-order Birch-Murnaghan equation of state providing the following coefficients: V 0 = 542.58(3)Å3, K T0 = 193.9(1.7) GPa, K' = 6.0(5). These results are consistent with previous investigations of Cr and Al spinels measured with the same experimental approach but the K T0 differs significantly from the experimental determination carried out more than 40 years ago by Wang and Simmons (1972) by the pulse echo overlap method. Our new results were used to redetermine the FeAl2O4 (hercynite) = FeO(wüstite) + Al2O3(corundum) equilibrium in P–T space and obtain geobarometric information for Cr-Al spinels found as inclusions in diamond.

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*E-mail: fabrizio.nestola@unipd.it
References
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Andreozzi, G.B. and Lucchesi, S. (2002) Intersite distribution of Fe 2+ and Mg in the spinel (sensu stricto)–hercynite series by single-crystal X-ray diffraction. American Mineralogist, 87, 11131120.
Angel, R.J. (2000) Equations of state. Pp. 3559. in: High-Temperature and High-Pressure Crystal Chemistry (Hazen, R.M., Downs, R.T., editors). Reviews in Mineralogy & Geochemistry, 41. Mineralogical Society of America and the Geochemical Society, Washington, DC.
Angel, R.J. and Finger, L. (2011) SINGLE: a program to control single-crystal diffractometers. Journal of Applied Crystallography, 44, 247251.
Angel, R.J., Allan, D., Miletich, R. and Finger, L. (1997) The use of quartz as an internal pressure standard in high-pressure crystallography. Journal of Applied Crystallography, 30, 461466.
Angel, R.J., Downs, R. and Finger, L. (2000) Hightemperature-high-pressure diffractometry. Pp. 559597. in: High-Temperature and High-Pressure Crystal Chemistry (Hazen, R.M., Downs, R.T., editors). Reviews in Mineralogy & Geochemistry, 41. Mineralogical Society of America and the Geochemical Society, Washington, DC.
Angel, R.J., Bujak, M., Zhao, J., Gatta, G.D. and Jacobsen, S.D. (2007) Effective hydrostatic limits of pressure media for high-pressure crystallographic studies. Journal of Applied Crystallography, 40, 2632.
Angel, R.J., Gonzalez-Platas, J. and Alvaro, M. (2014a). EosFit7c and a Fortran module (library) for equation of state calculations. Zeitschrift für Kristallographie, 229, 405419.
Angel, R.J., Mazzucchelli, M.L., Alvaro, M., Nimis, P. and Nestola, F. (2014b) Geobarometry from hostinclusion systems: the role of elastic relaxation. American Mineralogist, 99(10), 21462149.
Angel, R.J., Alvaro, M., Nestola, F. and Mazzucchelli, M.L. (2015) Diamond thermoelastic properties and implications for determining the pressure of formation of diamond-inclusion systems. Russian Geology and Geophysics, 56, 211220.
Ballhaus, C., Berry, R. and Green, D. (1990) Oxygen fugacity controls in the Earth’s upper mantle. Nature, 349, 437440.
Ballhaus, C., Berry, R. and Green, D. (1991) High pressure experimental calibration of the olivineorthopyroxene-spinel oxygen geobarometer: implications for the oxidation state of the upper mantle. Contributions to Mineralogy and Petrology, 107, 2740.
Birch, F. (1947) Finite elastic strain of cubic crystals. Physical Review, 71, 809. Bohlen, S.R., Dollase, W.A. and Wall, V.J. (1986) Calibration and applications of spinel equilibria in the system FeO-Al2O3-SiO2 . Journal of Petrology, 27, 11431156.
Bosi, F., Hålenius, U. and Skogby, H. (2008) Stoichiometry of synthetic ulvöspinel single crystals. American Mineralogist, 93, 13121316.
Fabriès, J. (1979) Spinel-olivine geothermometry in peridotites from ultramafic complexes. Contributions to Mineralogy and Petrology, 69, 329336.
Hålenius, U., Skogby, H. and Andreozzi, G.B. (2002) Influence of cation distribution on the optical absorption spectra of Fe3+-bearing spinel ss– hercynite crystals: evidence for electron transitions in VIFe 2+ -VIFe3+ clusters. Physics and Chemistry of Minerals, 29, 319330.
Harrison, R.J., Redfern, S.A.T. and O’Neill, H.St.C. (1998) The temperature dependence of the cation distribution in synthetic hercynite (FeAl2O4) from in-situ neutron diffraction refinements. American Mineralogist, 83, 10921099.
Holland, T. and Powell, R. (1990) An enlarged and updated internally consistent thermodynamic dataset with uncertainties and correlations: the system K2O-Na2O–CaO-MgO-MnO–FeO-Fe2O3– Al2O3–TiO2–SiO2-C-H2-O2 . Journal of Metamorphic Geology, 8, 89124.
Holland, T. and Powell, R. (1998) An internally consistent thermodynamic data set for phases of petrological interest. Journal of Metamorphic Geology, 16, 309343.
King, H. and Finger, L. (1979) Diffracted beam crystal centering and its application to high-pressure crystallography. Journal of Applied Crystallography, 12, 374378.
Lenaz, D. and Skogby, H. (2013) Structural changes in the FeAl2O4-FeCr2O4 solid solution series and their consequences on natural Cr-bearing spinels. Physics and Chemistry of Minerals, 40, 587595.
Lenaz, D., Logvinova, A.M., Princivalle, F. and Sobolev, N.V. (2009) Structural parameters of chromite included in diamond and kimberlites from Siberia: A new tool for discriminating ultramafic source. American Mineralogist, 94, 10671070.
Lenaz, D., Skogby, H., Logvinova, A.M., Sobolev, N.V. and Princivalle, F. (2013) A micro-Mössbauer study of chromites included in diamond and other mantlerelated rocks. Physics and Chemistry of Minerals, 40, 671679.
Milani, S., Nestola, F., Alvaro, M., Pasqual, D., Mazzucchelli, M.L., Domeneghetti, M.C. and Geiger, C.A. (2015) Diamond–garnet geobarometry: The role of garnet compressibility and expansivity. Lithos, 227, 140147.
Miletich, R., Allan, D.R. and Kuhs, W.F. (2000) Highpressure single-crystal techniques. Pp. 445520. in: High-Temperature and High-Pressure Crystal Chemistry (Hazen, R.M., Downs, R.T., editors). Reviews in Mineralogy & Geochemistry, 41. Mineralogical Society of America and the Geochemical Society, Washington, DC.
Nestola, F., Ballaran, T.B., Balic-Zunic, T., Princivalle, F., Secco, L. and Dal Negro, A. (2007) Comparative compressibility and structural behavior of spinel MgAl2O4 at high pressures: The independency on the degree of cation order. American Mineralogist, 92, 18381843.
Nestola, F., Smyth, J.R., Parisatto, M., Secco, L., Princivalle, F., Bruno, M., Prencipe, M. and Dal Negro, A. (2009) Effects of non-stoichiometry on the spinel structure at high pressure: Implications for Earth’s mantle mineralogy. Geochimica et Cosmochimica Acta, 73, 489492.
Nestola, F., Angel, R.J., Zhao, J., Garrido, C.J., Sánchez-Vizcaíno, V.L., Capitani, G. and Mellini, M. (2010) Antigorite equation of state and anomalous softening at 6 GPa: an in situ single-crystal X-ray diffraction study. Contributions to Mineralogy and Petrology, 160, 3343.
Nestola, F., Nimis, P., Ziberna, L., Longo, M., Marzoli, A., Harris, J.W., Manghnani, M.H. and Fedortchouk, Y. (2011) First crystal-structure determination of olivine in diamond: Composition and implications for provenance in the Earth’s mantle. Earth and Planetary Science Letters, 305, 249255.
Nestola, F., Periotto, B., Andreozzi, G.B., Bruschini, E. and Bosi, F. (2014) Pressure-volume equation of state for chromite and magnesiochromite: a singlecrystal X-ray diffraction investigation. American Mineralogist, 99, 12481253.
O’Neill, H.St.C. (1981) The transition between spinel lherzolite and garnet lherzolite, and its use as a geobarometer. Contributions to Mineralogy and Petrology, 77, 185194.
O’Neill, H.St.C. and Wall, V. (1987) The Olivine– orthopyroxene–spinel oxygen geobarometer, the nickel precipitation curve, and the oxygen fugacity of the Earth’s Upper Mantle. Journal of Petrology, 28, 11691191.
Perinelli, C., Andreozzi, G.B., Conte, A.M., Oberti, R. and Armienti, P. (2012) Redox state of subcontinental lithospheric mantle and relationships with metasomatism: insights from spinel peridotites from northern Victoria Land (Antarctica). Contributions to Mineralogy and Petrology, 164, 10531067.
Perinelli, C., Bosi, F., Andreozzi, G.B., Conte, A.M. and Armienti, P. (2014) Geothermometric study of Crspinels of peridotite mantle xenoliths from northern Victoria Land (Antarctica). American Mineralogist, 99, 839846.
Princivalle, F., Martignago, F., Nestola, F. and Negro, A.D. (2012) Kinetics of cation ordering in synthetic Mg(Al,Fe3+)2O4 spinels. European Journal of Mineralogy, 24, 633643.
Ralph, R. and Finger, L.W. (1982) A computer program for refinement of crystal orientation matrix and lattice constants from diffractometer data with lattice symmetry constraints. Journal of Applied Crystallography, 15, 537539.
Sack, R.O. and Ghiorso, M.S. (1991) Chromian spinels as petrogenetic indicators; thermodynamics and petrological applications. American Mineralogist, 76, 827847.
Schollenbruch, K., Woodland, A.B. and Frost, D.J. (2010) The stability of hercynite at high pressures and temperatures. Physics and Chemistry of Minerals, 37, 137143.
Shulters, J.C. and Bohlen, S.R. (1989) The stability of hercynite and hercynite-gahnite spinels in corundumor quartz-bearing assemblages. Journal of Petrology, 30, 10171031.
Slack, G.A. (1964) FeAl2O4-MgAl2O4: Growth and some thermal, optical, and magnetic properties of mixed single crystals. Physical Review, 134, A1268. Stachel, T. and Harris, J. (2008) The origin of cratonic diamonds-constraints from mineral inclusions. Ore Geology Reviews, 34, 532.
Stixrude, L. and Lithgow-Bertelloni, C. (2005) Thermodynamics of mantle minerals-I. Physical properties. Geophysical Journal International, 162, 610632.
Taran, M.N., Parisi, F., Lenaz, D. and Vishnevskyy, A.A. (2014) Synthetic and natural chromium bearing spinels: an optical spectroscopy study. Physics and Chemistry of Minerals, 41, 593602.
Wang, H. and Simmons, G. (1972) Elasticity of some mantle crystal structures: 1. Pleonaste and hercynite spinel. Journal of Geophysical Research, 77, 43794392.
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