Mössbauer and XRD Characterization of the Mineral Matter of Coal from the Guachinte Mine in Colombia

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• 作者：Reyes ; F. ; Pé ; rez Alcá ; zar ; G. A. ; Barraza ; J. M. ; Boh&oacute ; rquez ; A. ; Tabares ; J. A. ; Speziali ; N. L.
• 关键词：M枚ssbauer ; XRD ; mineral identification ; different seams
• 刊名：Hyperfine Interactions
• 出版年：2003
• 出版时间：2003
• 年：2003
• 卷：148/149
• 期：1/4
• 页码：39-46
• 全文大小：79 KB
• 刊物类别：Physics and Astronomy
• 刊物主题：Physics
  Nuclear Physics, Heavy Ions and Hadrons
  Atoms, Molecules, Clusters and Plasmas
  Condensed Matter
  Surfaces and Interfaces and Thin Films
  
• 出版者：Springer Netherlands
• ISSN：1572-9540

文摘

The aim of this work was the characterization and differentiation, using Mössbauer spectroscopy (MS) and X-ray diffraction (XRD), of coal samples with different ash and sulfur contents obtained in three places corresponding at cuts in different seams from the Guachinte mine, Valle, Colombia. The mineral phases identified by XRD were in general kaolinite, quartz, pyrite and gypsum, and in particular dolomite and calcite. MS confirms the presence of pyrite and kaolinite, besides evidences the additional presence of jarosite which was not detected by the XRD results due their low amounts. In the high mineral matter ash sample quartz and hematite was identified by XRD, the last one confirmed by MS results. A second phase in this sample was detected by Mössbauer spectroscopy, which could be superparamagnetic hematite. Rietveld refinement for XRD pattern from a sample is reported.