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Science 22 December 1995:
Vol. 270. no. 5244, pp. 1964 - 1967
DOI: 10.1126/science.270.5244.1964
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Reports

Al Coordination Changes in High-Pressure Aluminosilicate Liquids

J. L. Yarger (1),  K. H. Smith,  R. A. Nieman,  J. Diefenbacher,  G. H. Wolf,  B. T. Poe,  P. F. McMillan (1)

Understanding the effect of pressure on aluminosilicate glass and liquid structure is critical to understanding magma flow at depth. Aluminum coordination has been predicted by mineral phase analysis and molecular dynamic calculations to change with increasing pressure. Nuclear magnetic resonance studies of glasses quenched from high pressure provide clear evidence for an increase in the average coordination of Al with pressure.


J. L. Yarger, K. H. Smith, R. A. Nieman, Department of Chemistry and Biochemistry, Arizona State University, Tempe, AZ 85287, USA.
J. Diefenbacher, G. H. Wolf, P. F. McMillan, Material Research Group in High-Pressure Synthesis, Arizona State University, Tempe AZ 85287, USA.
B. T. Poe, Bayerisches Geoinstitut, Universitat Bayreuth, Bayreuth, Germany D-95440.
(1) To whom correspondence should be addressed.


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
X-ray Raman scattering study of MgSiO3 glass at high pressure: Implication for triclustered MgSiO3 melt in Earth's mantle.
S. K. Lee, J.-F. Lin, Y. Q. Cai, N. Hiraoka, P. J. Eng, T. Okuchi, H.-k. Mao, Y. Meng, M. Y. Hu, P. Chow, et al. (2008)
PNAS 105, 7925-7929
   Abstract »    Full Text »    PDF »
Effect of structural transitions on properties of high-pressure silicate melts: 27Al NMR, glass densities, and melt viscosities.
J. R. Allwardt, J. F. Stebbins, H. Terasaki, L.-S. Du, D. J. Frost, A. C. Withers, M. M. Hirschmann, A. Suzuki, and E. Ohtani (2007)
American Mineralogist 92, 1093-1104
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Constraining 17O and 27Al NMR spectra of high-pressure crystals and glasses: New data for jadeite, pyrope, grossular, and mullite.
K. E. Kelsey, J. F. Stebbins, L.-S. Du, and B. Hankins (2007)
American Mineralogist 92, 210-216
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The effect of fictive temperature on Al coordination in high-pressure (10 GPa) sodium aluminosilicate glasses.
J. R. Allwardt, B. T. Poe, and J. F. Stebbins (2005)
American Mineralogist 90, 1453-1457
   Abstract »    Full Text »    PDF »
Aluminum coordination and the densification of high-pressure aluminosilicate glasses.
J. R. Allwardt, J. F. Stebbins, B. C. Schmidt, D. J. Frost, A. C. Withers, and M. M. Hirschmann (2005)
American Mineralogist 90, 1218-1222
   Abstract »    Full Text »    PDF »
High-pressure viscometry of polymerized silicate melts and limitations of the Eyring equation.
D. Tinker, C. E. Lesher, G. M. Baxter, T. Uchida, and Y. Wang (2004)
American Mineralogist 89, 1701-1708
   Abstract »    Full Text »    PDF »
Self diffusion of Si and O in dacitic liquid at high pressures.
D. Tinker and C. E. Lesher (2001)
American Mineralogist 86, 1-13
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Aluminium coordination in tektites: A XANES study.
G. Giuli, G. Pratesi, M. Corazza, and C. Cipriani (2000)
American Mineralogist 85, 1172-1174
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Silicon and Oxygen Self-Diffusivities in Silicate Liquids Measured to 15 Gigapascals and 2800 Kelvin.
B. T. Poe, P. F. McMillan, D. C. Rubie, S. Chakraborty, J. Yarger, and J. Diefenbacher (1997)
Science 276, 1245-1248
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