Quantification of water in hydrous ringwoodite
Abstract
Here, ringwoodite, γ-(Mg,Fe)2SiO4, in the lower 150 km of Earth’s mantle transition zone (410-660 km depth) can incorporate up to 1.5-2 wt% H2O as hydroxyl defects. We present a mineral-specific IR calibration for the absolute water content in hydrous ringwoodite by combining results from Raman spectroscopy, secondary ion mass spectrometery (SIMS) and proton-proton (pp)-scattering on a suite of synthetic Mg- and Fe-bearing hydrous ringwoodites. H2O concentrations in the crystals studied here range from 0.46 to 1.7 wt% H2O (absolute methods), with the maximum H2O in the same sample giving 2.5 wt% by SIMS calibration. Anchoring our spectroscopic results to absolute H-atom concentrations from pp-scattering measurements, we report frequency-dependent integrated IR-absorption coefficients for water in ringwoodite ranging from 78180 to 158880 L mol-1cm-2, depending upon frequency of the OH absorption. We further report a linear wavenumber IR calibration for H2O quantification in hydrous ringwoodite across the Mg2SiO4-Fe2SiO4 solid solution, which will lead to more accurate estimations of the water content in both laboratory-grown and naturally occurring ringwoodites. Re-evaluation of the IR spectrum for a natural hydrous ringwoodite inclusion in diamond from the study of the crystal contains 1.43 ± 0.27 wt% H2O, thus confirming near-maximum amounts of H2O for this samplemore »
- Authors:
-
- Univ. of Nevada, Las Vegas, NV (United States)
- Northwestern Univ., Evanston, IL (United States)
- Univ. de Bundeswehr Munchen, Neubiberg (Germany)
- Carnegie Inst. of Washington, Washington, D.C. (United States)
- Helmholtz-Zentrum Potsdam, Deutsches GeoForschungsZentrum (GFZ), Potsdam (Germany)
- Univ. of Colorado, Boulder, CO (United States)
- Publication Date:
- Research Org.:
- Carnegie Inst. of Washington, Washington, DC (United States)
- Sponsoring Org.:
- USDOE National Nuclear Security Administration (NNSA)
- OSTI Identifier:
- 1335510
- Grant/Contract Number:
- NA0002006; EAR-1215957; EAR-0748707
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Frontiers in Earth Science
- Additional Journal Information:
- Journal Volume: 2; Journal ID: ISSN 2296-6463
- Publisher:
- Frontiers Research Foundation
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 58 GEOSCIENCES; IR spectroscopy; water in nominally anhydrous minerals; transition zone; mineral-specific absorption coefficient; SIMS; Raman spectroscopy; proton-proton scattering; ringwoodite
Citation Formats
Thomas, Sylvia -Monique, Jacobsen, Steven D., Bina, Craig R., Reichart, Patrick, Moser, Marcus, Hauri, Erik H., Koch-Muller, Monika, Smyth, Joseph R., and Dollinger, Gunther. Quantification of water in hydrous ringwoodite. United States: N. p., 2015.
Web. doi:10.3389/feart.2014.00038.
Thomas, Sylvia -Monique, Jacobsen, Steven D., Bina, Craig R., Reichart, Patrick, Moser, Marcus, Hauri, Erik H., Koch-Muller, Monika, Smyth, Joseph R., & Dollinger, Gunther. Quantification of water in hydrous ringwoodite. United States. https://doi.org/10.3389/feart.2014.00038
Thomas, Sylvia -Monique, Jacobsen, Steven D., Bina, Craig R., Reichart, Patrick, Moser, Marcus, Hauri, Erik H., Koch-Muller, Monika, Smyth, Joseph R., and Dollinger, Gunther. Wed .
"Quantification of water in hydrous ringwoodite". United States. https://doi.org/10.3389/feart.2014.00038. https://www.osti.gov/servlets/purl/1335510.
@article{osti_1335510,
title = {Quantification of water in hydrous ringwoodite},
author = {Thomas, Sylvia -Monique and Jacobsen, Steven D. and Bina, Craig R. and Reichart, Patrick and Moser, Marcus and Hauri, Erik H. and Koch-Muller, Monika and Smyth, Joseph R. and Dollinger, Gunther},
abstractNote = {Here, ringwoodite, γ-(Mg,Fe)2SiO4, in the lower 150 km of Earth’s mantle transition zone (410-660 km depth) can incorporate up to 1.5-2 wt% H2O as hydroxyl defects. We present a mineral-specific IR calibration for the absolute water content in hydrous ringwoodite by combining results from Raman spectroscopy, secondary ion mass spectrometery (SIMS) and proton-proton (pp)-scattering on a suite of synthetic Mg- and Fe-bearing hydrous ringwoodites. H2O concentrations in the crystals studied here range from 0.46 to 1.7 wt% H2O (absolute methods), with the maximum H2O in the same sample giving 2.5 wt% by SIMS calibration. Anchoring our spectroscopic results to absolute H-atom concentrations from pp-scattering measurements, we report frequency-dependent integrated IR-absorption coefficients for water in ringwoodite ranging from 78180 to 158880 L mol-1cm-2, depending upon frequency of the OH absorption. We further report a linear wavenumber IR calibration for H2O quantification in hydrous ringwoodite across the Mg2SiO4-Fe2SiO4 solid solution, which will lead to more accurate estimations of the water content in both laboratory-grown and naturally occurring ringwoodites. Re-evaluation of the IR spectrum for a natural hydrous ringwoodite inclusion in diamond from the study of the crystal contains 1.43 ± 0.27 wt% H2O, thus confirming near-maximum amounts of H2O for this sample from the transition zone.},
doi = {10.3389/feart.2014.00038},
journal = {Frontiers in Earth Science},
number = ,
volume = 2,
place = {United States},
year = {Wed Jan 28 00:00:00 EST 2015},
month = {Wed Jan 28 00:00:00 EST 2015}
}
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Synchrotron IR study of hydrous ringwoodite (γ-Mg2SiO4) up to 30 GPa
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Spectroscopic studies of synthetic and natural ringwoodite, γ-(Mg, Fe)2SiO4
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Breakdown of hydrous ringwoodite to pyroxene and spinelloid at high P and T and oxidizing conditions
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IR calibrations for water determination in olivine, r-GeO2, and SiO2 polymorphs
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Solubility of water in the α, β and γ phases of (Mg,Fe) 2 SiO 4
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Calibration of the infrared molar absorption coefficients for H in olivine, clinopyroxene and rhyolitic glass by elastic recoil detection analysis
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Calibration of infrared spectroscopy by elastic recoil detection analysis of H in synthetic olivine
journal, December 2012
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Partitioning of water during melting of the Earth's upper mantle at H2O-undersaturated conditions
journal, August 2006
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The effect of water on the electrical conductivity of olivine aggregates and its implications for the electrical structure of the upper mantle
journal, October 2009
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Radiative heat transfer in a hydrous mantle transition zone
journal, December 2012
- Thomas, Sylvia-Monique; Bina, Craig R.; Jacobsen, Steven D.
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Determination of hydrogen content in geological samples using elastic recoil detection analysis (ERDA)
journal, June 2009
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Sound velocities and elastic constants of iron-bearing hydrous ringwoodite
journal, June 2004
- Jacobsen, Steven D.; Smyth, Joseph R.; Spetzler, Hartmut
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High pressure crystal chemistry of hydrous ringwoodite and water in the Earth’s interior
journal, June 2004
- Smyth, Joseph R.; Holl, Christopher M.; Frost, Daniel J.
- Physics of the Earth and Planetary Interiors, Vol. 143-144
Ringwoodite, Natural (Mg,Fe)2SiO4 Spinel in the Tenham Meteorite
journal, March 1969
- Binns, R. A.; Davis, R. J.; Reed, S. J. B.
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The 400-km seismic discontinuity and the proportion of olivine in the Earth's upper mantle
journal, December 1986
- Bina, Craig R.; Wood, Bernard J.
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Water content in the transition zone from electrical conductivity of wadsleyite and ringwoodite
journal, April 2005
- Huang, Xiaoge; Xu, Yousheng; Karato, Shun-ichiro
- Nature, Vol. 434, Issue 7034
Abundance and Partitioning of OH in a High-pressure Magmatic System: Megacrysts from the Monastery Kimberlite, South Africa
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- Journal of Petrology, Vol. 45, Issue 8
Water content of mantle garnets
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WATER, MELTING, AND THE DEEP EARTH H 2 O CYCLE
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Application of Raman spectroscopy to quantify trace water concentrations in glasses and garnets
journal, October 2008
- Thomas, S. -M.; Thomas, R.; Davidson, P.
- American Mineralogist, Vol. 93, Issue 10
Water in natural olivine--determined by proton-proton scattering analysis
journal, October 2008
- Gose, J.; Reichart, P.; Dollinger, G.
- American Mineralogist, Vol. 93, Issue 10
Theoretical infrared absorption coefficient of OH groups in minerals
journal, May 2008
- Balan, E.; Refson, K.; Blanchard, M.
- American Mineralogist, Vol. 93, Issue 5-6
Incorporation of water in iron-free ringwoodite: A first-principles study
journal, January 2009
- Blanchard, M.; Balan, E.; Wright, K.
- American Mineralogist, Vol. 94, Issue 1
In-situ mid/far micro-FTIR spectroscopy to trace pressure-induced phase transitions in strontium feldspar and wadsleyite
journal, November 2011
- Mrosko, M.; Koch-Muller, M.; Schade, U.
- American Mineralogist, Vol. 96, Issue 11-12
Effect of hydration on the single-crystal elasticity of Fe-bearing wadsleyite to 12 GPa
journal, September 2011
- Mao, Z.; Jacobsen, S. D.; Frost, D. J.
- American Mineralogist, Vol. 96, Issue 10
Hydrous ringwoodite to 5 K and 35 GPa: Multiple hydrogen bonding sites resolved with FTIR spectroscopy
journal, March 2013
- Panero, W. R.; Smyth, J. R.; Pigott, J. S.
- American Mineralogist, Vol. 98, Issue 4
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