Phase Composition of Iron Compounds in the Products of Annealing of the Tertiary Basaltic Rock from Góra Obłoga (the Lower Silesia, Poland)

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• 作者：J. L. Komraus and Z. Adamczyk
• 关键词：M&ouml ; ssbauer spectroscopy ; Tertiary basalt ; iron oxides ; olivine ; augite ; diopside ; hedenbergite
• 刊名：Hyperfine Interactions
• 出版年：2005
• 出版时间：June 2005
• 年：2005
• 卷：163
• 期：1-4
• 页码：57-72
• 全文大小：369 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 work presents results of the research on thermal transformations of iron minerals which are present in basalt rock from Góra Obłoga in Pogórze Złotoryjskie District. The rock under study shows microporphyric texture and compact microstructure and contained: olivine, augite, diopside, plagioclases, serpentines, zeolites, apatite and also opaque minerals (oxides). The basalt was annealing within the temperature range between 573–1473 K, in air, and then, microscopic observations, X-ray diffraction as well as Mössbauer spectroscopy measurements were performed. During the heat treatment of the rock it was found that the content of olivine and augite was gradually decreasing due to progressive oxidation of iron compounds, resulting in formation of magnetite and hematite. The comparison of the results of thermal Mössbauer spectral analysis showed that transformation of iron minerals occurred already under conditions when the basic rock mass underwent only insignificant changes.