The Role of Redox on Bridgmanite Crystal Chemistry and Calcium Speciation in the Lower Mantle
Abstract
Abstract The amount of ferric iron Fe 3+ in the lower mantle is largely unknown and may be influenced by the disproportionation reaction of ferrous iron Fe 2+ into metallic Fe and Fe 3+ triggered by the formation of bridgmanite. Recent work has shown that Fe 3+ has a strong effect on the density and seismic wave speeds of bridgmanite and the incorporation of impurities such as aluminum. In order to further investigate the effects of ferric iron on mineral behavior at lower mantle conditions, we conducted laser‐heated diamond‐anvil cell (LHDAC) experiments on two sets of samples nearly identical in composition (an aluminum‐rich pyroxenite glass) except for the Fe 3+ content; with one sample with more Fe 3+ (“oxidized”: Fe 3+ /ΣFe ~ 55%) and the other with less Fe 3+ (“reduced”: Fe 3+ /ΣFe ~ 11%). We heated the samples to lower mantle conditions, and the resulting assemblages were drastically different between the two sets of samples. For the reduced composition, we observed a multiphase assemblage dominated by bridgmanite and calcium perovskite. In contrast, the oxidized material yielded a single phase of Ca‐bearing bridgmanite. These Al‐rich pyroxenite samples show a difference in density and seismic velocities for these two redox states, where themore »
- Authors:
-
[1];
[3]
- Yale Univ., New Haven, CT (United States); Colorado School of Mines, Golden, CO (United States)
- Yale Univ., New Haven, CT (United States)
- Yale Univ., New Haven, CT (United States); Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Publication Date:
- Research Org.:
- Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
- Sponsoring Org.:
- USDOE National Nuclear Security Administration (NNSA)
- OSTI Identifier:
- 1775041
- Alternate Identifier(s):
- OSTI ID: 1786776
- Report Number(s):
- LLNL-JRNL-806201
Journal ID: ISSN 2169-9313; 1009919
- Grant/Contract Number:
- AC52-07NA27344; DE‐FG02‐94ER14466
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Journal of Geophysical Research. Solid Earth
- Additional Journal Information:
- Journal Volume: 125; Journal Issue: 10; Journal ID: ISSN 2169-9313
- Publisher:
- American Geophysical Union
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 58 GEOSCIENCES; 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
Citation Formats
Creasy, Neala, Girard, Jennifer, Eckert, James O., and Lee, Kanani M. The Role of Redox on Bridgmanite Crystal Chemistry and Calcium Speciation in the Lower Mantle. United States: N. p., 2020.
Web. doi:10.1029/2020jb020783.
Creasy, Neala, Girard, Jennifer, Eckert, James O., & Lee, Kanani M. The Role of Redox on Bridgmanite Crystal Chemistry and Calcium Speciation in the Lower Mantle. United States. https://doi.org/10.1029/2020jb020783
Creasy, Neala, Girard, Jennifer, Eckert, James O., and Lee, Kanani M. Wed .
"The Role of Redox on Bridgmanite Crystal Chemistry and Calcium Speciation in the Lower Mantle". United States. https://doi.org/10.1029/2020jb020783. https://www.osti.gov/servlets/purl/1775041.
@article{osti_1775041,
title = {The Role of Redox on Bridgmanite Crystal Chemistry and Calcium Speciation in the Lower Mantle},
author = {Creasy, Neala and Girard, Jennifer and Eckert, James O. and Lee, Kanani M.},
abstractNote = {Abstract The amount of ferric iron Fe 3+ in the lower mantle is largely unknown and may be influenced by the disproportionation reaction of ferrous iron Fe 2+ into metallic Fe and Fe 3+ triggered by the formation of bridgmanite. Recent work has shown that Fe 3+ has a strong effect on the density and seismic wave speeds of bridgmanite and the incorporation of impurities such as aluminum. In order to further investigate the effects of ferric iron on mineral behavior at lower mantle conditions, we conducted laser‐heated diamond‐anvil cell (LHDAC) experiments on two sets of samples nearly identical in composition (an aluminum‐rich pyroxenite glass) except for the Fe 3+ content; with one sample with more Fe 3+ (“oxidized”: Fe 3+ /ΣFe ~ 55%) and the other with less Fe 3+ (“reduced”: Fe 3+ /ΣFe ~ 11%). We heated the samples to lower mantle conditions, and the resulting assemblages were drastically different between the two sets of samples. For the reduced composition, we observed a multiphase assemblage dominated by bridgmanite and calcium perovskite. In contrast, the oxidized material yielded a single phase of Ca‐bearing bridgmanite. These Al‐rich pyroxenite samples show a difference in density and seismic velocities for these two redox states, where the reduced assemblage is denser than the oxidized assemblage by ~1.5% at the bottom of the lower mantle and slower (bulk sound speed) by ~2%. Thus, heterogeneities of Fe 3+ content may lead to density and seismic wave speed heterogeneities in Earth's lower mantle.},
doi = {10.1029/2020jb020783},
journal = {Journal of Geophysical Research. Solid Earth},
number = 10,
volume = 125,
place = {United States},
year = {Wed Sep 30 00:00:00 EDT 2020},
month = {Wed Sep 30 00:00:00 EDT 2020}
}
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Works referenced in this record:
Equations of state of the high-pressure phases of a natural peridotite and implications for the Earth's lower mantle
journal, July 2004
- Lee, Kanani K. M.; O'Neill, Bridget; Panero, Wendy R.
- Earth and Planetary Science Letters, Vol. 223, Issue 3-4
Cationic substitution in MgSiO3 perovskite
journal, April 2003
- Andrault, Denis
- Physics of the Earth and Planetary Interiors, Vol. 136, Issue 1-2
Elasticity and constitution of the Earth's interior
journal, June 1952
- Birch, Francis
- Journal of Geophysical Research, Vol. 57, Issue 2
Evidence for a Fe3+-rich pyrolitic lower mantle from (Al,Fe)-bearing bridgmanite elasticity data
journal, March 2017
- Kurnosov, A.; Marquardt, H.; Frost, D. J.
- Nature, Vol. 543, Issue 7646
Equation of state of lower mantle (Al,Fe)-MgSiO3 perovskite
journal, December 2001
- Andrault, Denis; Bolfan-Casanova, Nathalie; Guignot, Nicolas
- Earth and Planetary Science Letters, Vol. 193, Issue 3-4
Al, Fe substitution in the MgSiO3 perovskite structure: A single-crystal X-ray diffraction study
journal, April 2006
- Vanpeteghem, C. B.; Angel, R. J.; Ross, N. L.
- Physics of the Earth and Planetary Interiors, Vol. 155, Issue 1-2
Mineralogy of subducted basaltic crust (MORB) from 25 to 37 GPa, and chemical heterogeneity of the lower mantle
journal, July 2001
- Ono, Shigeaki; Ito, Eiji; Katsura, Tomoo
- Earth and Planetary Science Letters, Vol. 190, Issue 1-2
Alkalic magmas generated by partial melting of garnet pyroxenite
journal, January 2003
- Hirschmann, Marc M.; Kogiso, Tetsu; Baker, Michael B.
- Geology, Vol. 31, Issue 6
The Soret diffusion in laser-heated diamond-anvil cell
journal, June 2010
- Sinmyo, Ryosuke; Hirose, Kei
- Physics of the Earth and Planetary Interiors, Vol. 180, Issue 3-4
Rietveld refinement guidelines
journal, February 1999
- McCusker, L. B.; Von Dreele, R. B.; Cox, D. E.
- Journal of Applied Crystallography, Vol. 32, Issue 1
Aluminum in magnesium silicate perovskite: Formation, structure, and energetics of magnesium-rich defect solid solutions: ALUMINUM IN SILICATE PEROVSKITE
journal, July 2003
- Navrotsky, Alexandra; Schoenitz, Mirko; Kojitani, Hiroshi
- Journal of Geophysical Research: Solid Earth, Vol. 108, Issue B7
Evidence for a deep mantle source for EM and HIMU domains from integrated geochemical and geophysical constraints
journal, February 2018
- Jackson, M. G.; Becker, T. W.; Konter, J. G.
- Earth and Planetary Science Letters, Vol. 484
GSAS-II : the genesis of a modern open-source all purpose crystallography software package
journal, March 2013
- Toby, Brian H.; Von Dreele, Robert B.
- Journal of Applied Crystallography, Vol. 46, Issue 2
Phase relation and mineral chemistry in pyrolite to 2200°C under the lower mantle pressures and implications for dynamics of mantle plumes: PHASE RELATION AND CHEMISTRY IN PYROLITE
journal, May 2003
- Nishiyama, Norimasa; Yagi, Takehiko
- Journal of Geophysical Research: Solid Earth, Vol. 108, Issue B5
High-pressure and high-temperature phase relations in CaSiO3 and CaMgSi2O6 and elasticity of perovskite-type CaSiO3
journal, April 1989
- Tamai, Hiroshi; Yagi, Takehiko
- Physics of the Earth and Planetary Interiors, Vol. 54, Issue 3-4
Phase Transitions and Mineralogy of the Lower Mantle
book, January 2015
- Irifune, T.; Tsuchiya, T.
- Treatise on Geophysics
New developments in laser-heated diamond anvil cell with in situ synchrotron x-ray diffraction at High Pressure Collaborative Access Team
journal, July 2015
- Meng, Yue; Hrubiak, Rostislav; Rod, Eric
- Review of Scientific Instruments, Vol. 86, Issue 7
Garnet-perovskite transformation under conditions of the Earth's lower mantle: an analytical transmission electron microscopy study
journal, December 1999
- Miyajima, Nobuyoshi; Fujino, Kiyoshi; Funamori, Nobumasa
- Physics of the Earth and Planetary Interiors, Vol. 116, Issue 1-4
Partial melting experiments of bimineralic eclogite and the role of recycled mafic oceanic crust in the genesis of ocean island basalts
journal, September 2006
- Kogiso, Tetsu; Hirschmann, Marc M.
- Earth and Planetary Science Letters, Vol. 249, Issue 3-4
The composition of the Earth
journal, March 1995
- McDonough, W. F.; Sun, S. -s.
- Chemical Geology, Vol. 120, Issue 3-4
Pressure calibration of diamond anvil Raman gauge to 310GPa
journal, August 2006
- Akahama, Yuichi; Kawamura, Haruki
- Journal of Applied Physics, Vol. 100, Issue 4
Phase relations, structure and crystal chemistry of some aluminous silicate perovskites
journal, August 1995
- Kesson, S. E.; Fitz Gerald, J. D.; Shelley, J. M. G.
- Earth and Planetary Science Letters, Vol. 134, Issue 1-2
MgSiO 3 -FeSiO 3 -Al 2 O 3 in the Earth's lower mantle: Perovskite and garnet at 1200 km depth
journal, October 1994
- O'Neill, Bridget; Jeanloz, Raymond
- Journal of Geophysical Research: Solid Earth, Vol. 99, Issue B10
The Redox State of Earth's Mantle
journal, May 2008
- Frost, Daniel J.; McCammon, Catherine A.
- Annual Review of Earth and Planetary Sciences, Vol. 36, Issue 1
Stability and equation of state of CaSiO 3 -Perovskite to 134 GPa
journal, January 1989
- Mao, H. K.; Chen, L. C.; Hemley, R. J.
- Journal of Geophysical Research, Vol. 94, Issue B12
Effects of the Fe3+ spin transition on the properties of aluminous perovskite—New insights for lower-mantle seismic heterogeneities
journal, October 2011
- Catalli, Krystle; Shim, Sang-Heon; Dera, Przemyslaw
- Earth and Planetary Science Letters, Vol. 310, Issue 3-4
Static compression of iron to 78 GPa with rare gas solids as pressure-transmitting media
journal, January 1986
- Jephcoat, Andrew P.; Mao, H. K.; Bell, Peter M.
- Journal of Geophysical Research, Vol. 91, Issue B5
Oxidation potential in the Earth's lower mantle as recorded by ferropericlase inclusions in diamond
journal, May 2015
- Kaminsky, Felix V.; Ryabchikov, Igor D.; McCammon, Catherine A.
- Earth and Planetary Science Letters, Vol. 417
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
journal, January 2010
- Ricolleau, Angèle; Perrillat, Jean-Philippe; Fiquet, Guillaume
- Journal of Geophysical Research, Vol. 115, Issue B8
Perovskite Phase Relations in the System CaO-MgO-TiO2-SiO2 and Implications for Deep Mantle Lithologies
journal, January 2012
- Armstrong, L. S.; Walter, M. J.; Tuff, J. R.
- Journal of Petrology, Vol. 53, Issue 3
Pyroxenite causes fat plumes and stagnant slabs: Pyroxenite Fat Plumes and Stagnant Slabs
journal, May 2017
- Adam, Claudia; Caddick, Mark J.; King, Scott D.
- Geophysical Research Letters, Vol. 44, Issue 10
Experimental evidence for the existence of iron-rich metal in the Earth's lower mantle
journal, March 2004
- Frost, Daniel J.; Liebske, Christian; Langenhorst, Falko
- Nature, Vol. 428, Issue 6981
Stability of ferrous-iron-rich bridgmanite under reducing midmantle conditions
journal, June 2017
- Shim, Sang-Heon; Grocholski, Brent; Ye, Yu
- Proceedings of the National Academy of Sciences, Vol. 114, Issue 25
Effect of chemistry on the compressibility of silicate perovskite in the lower mantle
journal, June 2012
- Ballaran, Tiziana Boffa; Kurnosov, Alexander; Glazyrin, Konstantin
- Earth and Planetary Science Letters, Vol. 333-334
Subsolidus phase relations and perovskite compressibility in the system MgO–AlO1.5–SiO2 with implications for Earth's lower mantle
journal, August 2006
- Walter, Michael J.; Trønnes, Reidar G.; Armstrong, Lora S.
- Earth and Planetary Science Letters, Vol. 248, Issue 1-2
CaSiO 3 and CaTiO 3 perovskite-melt partitioning of trace elements: Implications for gross mantle differentiation: CALCIUM PEROVSKITE-MELT PARTITIONING OF TRACE ELEMENTS
journal, October 2002
- Corgne, Alexandre; Wood, Bernard J.
- Geophysical Research Letters, Vol. 29, Issue 19
Broad plumes rooted at the base of the Earth's mantle beneath major hotspots
journal, September 2015
- French, Scott W.; Romanowicz, Barbara
- Nature, Vol. 525, Issue 7567
Density of basaltic melt at high pressure and stability of the melt at the base of the lower mantle
journal, November 2001
- Ohtani, Eiji; Maeda, Makoto
- Earth and Planetary Science Letters, Vol. 193, Issue 1-2
Solid solution behaviour of CaSiO3 and MgSiO3 perovskites
journal, October 2010
- Jung, Daniel Y.; Schmidt, Max W.
- Physics and Chemistry of Minerals, Vol. 38, Issue 4
Discovery of bridgmanite, the most abundant mineral in Earth, in a shocked meteorite
journal, November 2014
- Tschauner, Oliver; Ma, Chi; Beckett, John R.
- Science, Vol. 346, Issue 6213
X-ray diffraction and Mossbauer spectroscopy of Fe3+-bearing Mg-silicate post-perovskite at 128-138 GPa
journal, February 2010
- Catalli, K.; Shim, S. -H.; Prakapenka, V. B.
- American Mineralogist, Vol. 95, Issue 2-3
Vibrational, elastic, and structural properties of cubic silicon carbide under pressure up to 75 GPa: Implication for a primary pressure scale
journal, March 2013
- Zhuravlev, K. K.; Goncharov, Alexander F.; Tkachev, S. N.
- Journal of Applied Physics, Vol. 113, Issue 11
Experimental and theoretical identification of a new high-pressure phase of silica
journal, July 1997
- Dubrovinsky, L. S.; Saxena, S. K.; Lazor, P.
- Nature, Vol. 388, Issue 6640
Mantle Mixing: The Generation, Preservation, and Destruction of Chemical Heterogeneity
journal, May 2002
- van Keken, Peter E.; Hauri, Erik H.; Ballentine, Chris J.
- Annual Review of Earth and Planetary Sciences, Vol. 30, Issue 1
Large oxygen excess in the primitive mantle could be the source of the Great Oxygenation Event
journal, January 2018
- Andrault, D.; Muñoz, M.; Pesce, G.
- Geochemical Perspectives Letters
Using stepped anvils to make even insulation layers in laser-heated diamond-anvil cell samples
journal, September 2015
- Du, Zhixue; Gu, Tingting; Dobrosavljevic, Vasilije
- Review of Scientific Instruments, Vol. 86, Issue 9
Pressure-induced changes in the compression mechanism of aluminous perovskite in the Earth's mantle
journal, October 2000
- Brodholt, John P.
- Nature, Vol. 407, Issue 6804
The integral enstatite chondrite model of the Earth
journal, August 1995
- Javoy, M.
- Geophysical Research Letters, Vol. 22, Issue 16
Thermodynamic parameters in the Earth as determined from seismic profiles
journal, September 1981
- Brown, J. M.; Shankland, T. J.
- Geophysical Journal International, Vol. 66, Issue 3
Synthesis and crystal chemistry of Fe3+-bearing (Mg,Fe3+)(Si,Fe3+)O3 perovskite
journal, October 2012
- Hummer, D. R.; Fei, Y.
- American Mineralogist, Vol. 97, Issue 11-12
The equation of state of CaSiO3 perovskite to 108 GPa at 300 K
journal, August 2000
- Shim, Sang-Heon; Duffy, Thomas S.; Shen, Guoyin
- Physics of the Earth and Planetary Interiors, Vol. 120, Issue 4
Effects of Fe-enrichment on the equation of state and stability of (Mg,Fe)SiO3 perovskite
journal, January 2013
- Dorfman, Susannah M.; Meng, Yue; Prakapenka, Vitali B.
- Earth and Planetary Science Letters, Vol. 361
Experimental constraints on the temperature profile in the lower mantle
journal, November 2008
- Ono, Shigeaki
- Physics of the Earth and Planetary Interiors, Vol. 170, Issue 3-4
Perovskite as a possible sink for ferric iron in the lower mantle
journal, June 1997
- McCammon, Catherine
- Nature, Vol. 387, Issue 6634
Preliminary reference Earth model
journal, June 1981
- Dziewonski, Adam M.; Anderson, Don L.
- Physics of the Earth and Planetary Interiors, Vol. 25, Issue 4
Approach to the mineralogy of the lower mantle by a combined method of a laser-heated diamond anvil cell experiment and analytical electron microscopy
journal, June 2004
- Fujino, Kiyoshi; Sasaki, Yohei; Komori, Toyohisa
- Physics of the Earth and Planetary Interiors, Vol. 143-144
Redox-induced lower mantle density contrast and effect on mantle structure and primitive oxygen
journal, August 2016
- Gu, Tingting; Li, Mingming; McCammon, Catherine
- Nature Geoscience, Vol. 9, Issue 9
Thermodynamics of mantle minerals - II. Phase equilibria
journal, March 2011
- Stixrude, Lars; Lithgow-Bertelloni, Carolina
- Geophysical Journal International, Vol. 184, Issue 3
Effect of Fe on the equation of state of mantle silicate perovskite over 1Mbar
journal, May 2008
- Lundin, S.; Catalli, K.; Santillán, J.
- Physics of the Earth and Planetary Interiors, Vol. 168, Issue 1-2
Synthesis of majorite and other high pressure garnets and perovskites
journal, December 1971
- Ringwood, A.; Major, A.
- Earth and Planetary Science Letters, Vol. 12, Issue 4
Phase transformations in diopside CaMgSi 2 O 6 at pressures Up to 25 GPa
journal, February 1989
- Irifune, Tetsuo; Susaki, Jun-ichi; Yagi, Takehiko
- Geophysical Research Letters, Vol. 16, Issue 2
Mössbauer and ELNES spectroscopy of (Mg,Fe)(Si,Al)O3 perovskite: a highly oxidised component of the lower mantle
journal, January 2000
- Lauterbach, S.; McCammon, C. A.; van Aken, P.
- Contributions to Mineralogy and Petrology, Vol. 138, Issue 1