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Title: Iron K-edge X-ray absorption near-edge structure spectroscopy of aerodynamically levitated silicate melts and glasses

Here, the local structure about Fe(II) and Fe(III) in silicate melts was investigated in-situ using iron K-edge X-ray absorption near-edge structure (XANES) spectroscopy. An aerodynamic levitation and laser heating system was used to allow access to high temperatures without contamination, and was combined with a chamber and gas mixing system to allow the iron oxidation state, Fe 3+/ΣFe, to be varied by systematic control of the atmospheric oxygen fugacity. Eleven alkali-free, mostly iron-rich and depolymerized base compositions were chosen for the experiments, including pure oxide FeO, olivines (Fe,Mg) 2SiO 4, pyroxenes (Fe,Mg)SiO 3, calcic FeO-CaSiO 3, and a calcium aluminosilicate composition, where total iron content is denoted by FeO for convenience. Melt temperatures varied between 1410 and 2160 K and oxygen fugacities between FMQ – 2.3(3) to FMQ + 9.1(3) log units (uncertainties in parentheses) relative to the fayalite-magnetite-β-quartz (FMQ) buffer.
Authors:
 [1] ;  [2] ;  [3] ;  [3] ;  [4] ;  [4] ;  [5] ;  [5] ;  [5] ;  [1]
  1. Materials Development, Inc., Arlington Heights, IL (United States); Argonne National Lab. (ANL), Argonne, IL (United States)
  2. Univ. College London, London (United Kingdom)
  3. Materials Development, Inc., Arlington Heights, IL (United States)
  4. Argonne National Lab. (ANL), Argonne, IL (United States)
  5. Univ. of Tennessee Space Institute, Tullahoma, TN (United States)
Publication Date:
Grant/Contract Number:
AC02-06CH11357; SBIR DE-SC0007564
Type:
Accepted Manuscript
Journal Name:
Chemical Geology
Additional Journal Information:
Journal Volume: 453; Journal Issue: C; Journal ID: ISSN 0009-2541
Publisher:
Elsevier
Research Org:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org:
University of Tennessee, Space Institute (UTSI); USDOE Office of Science (SC), Small Business Innovation Research (SBIR) and Small Business Technology Transfer (STTR), Small Business Innovative Research Grant Program; USDOE
Country of Publication:
United States
Language:
English
Subject:
58 GEOSCIENCES; 36 MATERIALS SCIENCE; silicate; melt; glass; iron; XANES; redox
OSTI Identifier:
1372470
Alternate Identifier(s):
OSTI ID: 1398053

Alderman, O. L. G., Wilding, M. C., Tamalonis, A., Sendelbach, S., Heald, S. M., Benmore, C. J., Johnson, C. E., Johnson, J. A., Hah, H. -Y., and Weber, J. K. R.. Iron K-edge X-ray absorption near-edge structure spectroscopy of aerodynamically levitated silicate melts and glasses. United States: N. p., Web. doi:10.1016/j.chemgeo.2017.01.020.
Alderman, O. L. G., Wilding, M. C., Tamalonis, A., Sendelbach, S., Heald, S. M., Benmore, C. J., Johnson, C. E., Johnson, J. A., Hah, H. -Y., & Weber, J. K. R.. Iron K-edge X-ray absorption near-edge structure spectroscopy of aerodynamically levitated silicate melts and glasses. United States. doi:10.1016/j.chemgeo.2017.01.020.
Alderman, O. L. G., Wilding, M. C., Tamalonis, A., Sendelbach, S., Heald, S. M., Benmore, C. J., Johnson, C. E., Johnson, J. A., Hah, H. -Y., and Weber, J. K. R.. 2017. "Iron K-edge X-ray absorption near-edge structure spectroscopy of aerodynamically levitated silicate melts and glasses". United States. doi:10.1016/j.chemgeo.2017.01.020. https://www.osti.gov/servlets/purl/1372470.
@article{osti_1372470,
title = {Iron K-edge X-ray absorption near-edge structure spectroscopy of aerodynamically levitated silicate melts and glasses},
author = {Alderman, O. L. G. and Wilding, M. C. and Tamalonis, A. and Sendelbach, S. and Heald, S. M. and Benmore, C. J. and Johnson, C. E. and Johnson, J. A. and Hah, H. -Y. and Weber, J. K. R.},
abstractNote = {Here, the local structure about Fe(II) and Fe(III) in silicate melts was investigated in-situ using iron K-edge X-ray absorption near-edge structure (XANES) spectroscopy. An aerodynamic levitation and laser heating system was used to allow access to high temperatures without contamination, and was combined with a chamber and gas mixing system to allow the iron oxidation state, Fe3+/ΣFe, to be varied by systematic control of the atmospheric oxygen fugacity. Eleven alkali-free, mostly iron-rich and depolymerized base compositions were chosen for the experiments, including pure oxide FeO, olivines (Fe,Mg)2SiO4, pyroxenes (Fe,Mg)SiO3, calcic FeO-CaSiO3, and a calcium aluminosilicate composition, where total iron content is denoted by FeO for convenience. Melt temperatures varied between 1410 and 2160 K and oxygen fugacities between FMQ – 2.3(3) to FMQ + 9.1(3) log units (uncertainties in parentheses) relative to the fayalite-magnetite-β-quartz (FMQ) buffer.},
doi = {10.1016/j.chemgeo.2017.01.020},
journal = {Chemical Geology},
number = C,
volume = 453,
place = {United States},
year = {2017},
month = {1}
}