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

Journal Article · · Chemical Geology
 [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)

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.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Organization:
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
Grant/Contract Number:
AC02-06CH11357; SBIR DE-SC0007564
OSTI ID:
1372470
Alternate ID(s):
OSTI ID: 1398053
Journal Information:
Chemical Geology, Vol. 453, Issue C; ISSN 0009-2541
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 32 works
Citation information provided by
Web of Science

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Cited By (4)

Temperature gradients for thermophysical and thermochemical property measurements to 3000 °C for an aerodynamically levitated spheroid journal January 2019
Determination and speciation of phosphorus in fertilizers and mineral supplements for cattle by X-ray absorption near-edge structure spectroscopy: a simple nondestructive method journal January 2019
Rare‐earth titanate melt structure and glass formation journal May 2019
X-ray Absorption Fine Structure (XAFS) Studies of Oxide Glasses—A 45-Year Overview journal January 2018

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