Chinese Journal of Geochemistry

, Volume 15, Issue 4, pp 344–352

The behaviour of rare-earth elements (REE) during weathering of granites in southern Guangxi, China

  • Zheng Zuoping
  • Lin Chuanxian
Article

Abstract

The behaviour of the rare-earth elements (REE) during the weathering of granites was studied in southern Guangxi, China. Based on the study of the weathering profiles, the soil, weathered and sub-weathered zones are identified with different REE geochemical behaviours through the weathering profiles of granite. The Ce anomalies of the weathering profiles cover a large range of values with most falling between 1.02 and 1.43 in the soil zone and 0.16 and 0.40 in the weathered and sub-weathered zones. Light rare-earth elements (LREE) and heavy rare-earth elements (HREE) are enriched to varying degree in the weathering profiles as compared to host granites. In the soil zone, more HREEs are leached than LREEs, and HREEs are more enriched than LREE in the weathered and sub-weathered zones. It is considered that infiltration and adsorption on clays are two processes controlling the enrichment and formation of REE deposits in the weathering profiles of granite.

Key words

REE geochemical behaviour weathering granite Guangxi 

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Copyright information

© Institute of Geochemistry, Chinese Academy of Sciences 1996

Authors and Affiliations

  • Zheng Zuoping
    • 1
  • Lin Chuanxian
    • 1
  1. 1.Guangzhou Institute of GeochemistryChinese Academy of SciencesGuangzhou

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