• Spectroscopy and Spectral Analysis
  • Vol. 33, Issue 4, 1126 (2013)
YIN Ke1、*, HONG Han-lie1, HAN Wen1, MA Yu-bo2, and LI Rong-biao1
Author Affiliations
  • 1[in Chinese]
  • 2[in Chinese]
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    DOI: 10.3964/j.issn.1000-0593(2013)04-1126-04 Cite this Article
    YIN Ke, HONG Han-lie, HAN Wen, MA Yu-bo, LI Rong-biao. Occurrence Relationship between Iron Minerals and Clay Minerals in Net-Like Red Soils: Evidence from X-Ray Diffraction[J]. Spectroscopy and Spectral Analysis, 2013, 33(4): 1126 Copy Citation Text show less

    Abstract

    The high purity of clay minerals is a key factor to reconstruct the palaeoclimate in clay mineralogy, however, the existence of iron minerals (such as goethite and hematite) and organics lead to the intergrowth of clay minerals and other minerals, producing other mineral impurities in enriched clay minerals. Although the removal of organics in soil sediments has been fully investigated, the occurrence state of iron minerals remains controversial, hindering the preparation of high-purity clay minerals. Therefore, the occurrence relationship of iron minerals and clay minerals in Jiujiang net-like red soils of the middle to lower reaches of the Yangtze River was investigated using the sequential separation method, which provided some implications for the removal of iron minerals in soil sediments. The results indicated that goethite and hematite were mostly absorbed on the surface of hydroxy-interlayered smectite and illite in the form of films, and the rest were absorbed by kaolinite.
    YIN Ke, HONG Han-lie, HAN Wen, MA Yu-bo, LI Rong-biao. Occurrence Relationship between Iron Minerals and Clay Minerals in Net-Like Red Soils: Evidence from X-Ray Diffraction[J]. Spectroscopy and Spectral Analysis, 2013, 33(4): 1126
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