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Elements; October 2006; v. 2; no. 5; p. 269-273; DOI: 10.2113/gselements.2.5.269
© 2006 Mineralogical Society of America
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The Structure of Silicate Glasses and Melts

Grant S. Henderson1, Georges Calas2 and Jonathan F. Stebbins3

1 Department of Geology, University of Toronto, 22 Russell Street, Toronto, Ontario M5S 3B1, Canada
E-mail: henders{at}geology.utoronto.ca
2 Institut de Minéralogie et de Physique des Milieux condensés, CNRS UMR 7590, Université Paris 6, Université Paris 7, Institut de Physique du Globe de Paris, 75005 Paris, France
E-mail: calas{at}impmc.jussieu.fr
3 Department of Geological and Environmental Sciences, Stanford University, Stanford, California 94305-2115, USA
E-mail: stebbins{at}stanford.edu

Much progress has been made in elucidating the complex structures of silicate glasses and melts. X-ray and neutron scattering, spectroscopy, and theoretical calculations now provide a reasonably clear picture of many aspects of the short-range structure of glasses (which approximates the melt structure at the glass transition temperature). Critical effects of redox conditions and volatiles on structure have been clarified. Qualitatively, links between structure and properties such as molar volume, entropy, cation partitioning, and viscosity have been established, but quantitative connections remain challenging. Effects of temperature and pressure on structure have been the subject of much recent work.

KEYWORDS: melts, structure, properties, cations, heterogeneous, coordination, polyamorphism


Related articles in Elements:

Glasses and Melts: Linking Geochemistry and Materials Science
Georges Calas, Grant S. Henderson, and Jonathan F. Stebbins
Elements 2006 2: 265-268. [Abstract] [Full Text]  



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