Chinese Journal of Geochemistry

, Volume 8, Issue 3, pp 245–253 | Cite as

REE geochemical characteristics of apatite, sphene and zircon from alkaline rocks

  • Zhou Lingdi
  • Wang Yangchuan


The accessory minerals apatite and sphene are the main carriers of REE in alkaline rocks. Their chondrite-normalized REE patterns decline sharply to the right as those of the host rocks. In the patterns an obvious negative Eu anomaly and a positive Ce anomaly can be seen in apatite and sphene, respectively. Zircon from alkaline rocks is different in REE pattern, i. e., a nearly symmetric “V” -shaped pattern with a maximum negative Eu anomaly. Compared with the equivalents from granites, apatite, sphene and zircon from alkaline rocks are all characterized by higher (La/Yb)n ratio and less Eu depletion. As to the relative contents of REE in minerals, apatite, sphene and zircon are enriched in LREE, MREE and HREE respectively, depending on their crystallochemical properties.


Host Rock Alkaline Rock Nepheline Syenite Enrichment Ratio LREE Enrichment 
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  1. [1]
    Wu Liren et al., Studies on Alkaline Rocks from the Selected Areas, Science Press, Beijing, 1966, 1–76 (in Chinese).Google Scholar
  2. [2]
    Liakhovich, V. V.,Geokhimiya, 2 (1971), 131–143 (in Russian).Google Scholar
  3. [3]
    Fleischer, M.,Econ. Geol., 78, 5 (1983), 1007–1010.Google Scholar
  4. [4]
    Cullers, R. L. and Medaris, G. Jr.,Contrib. Mineral. Petrol., 65, 2(1977), 143–153.CrossRefGoogle Scholar
  5. [5]
    Zhang Shaoli et al.,Geochimica, 1 (1985), 45–56 (in Chinese).Google Scholar
  6. [6]
    Henderson, P.,Contrib. Mineral. Petrol., 72, 1 (1980), 81–85.CrossRefGoogle Scholar
  7. [7]
    Yuan Zhongxin et al., A Compilation of Academic Papers on Geology for International Exchange (Volume 3), Geological Publishing House, Beijing, 1985, 231–242 (in Chinese).Google Scholar
  8. [8]
    Nagasawa, H.,Earth Planet. Sci. Letters, 9, 4 (1970), 359–364.CrossRefGoogle Scholar
  9. [9]
    Watson, E.B. and Green, T. H.,Earth Planet. Sci. Letters, 56 (1981), 405–421.CrossRefGoogle Scholar
  10. [10]
    Fleischer, M. and Altschuler, Z. S.,Geochim. Cosmochim. Acta. 33, 6 (1969), 725–732.CrossRefGoogle Scholar

Copyright information

© Institute of Geochemistry, Chinese Academy of Sciences 1989

Authors and Affiliations

  • Zhou Lingdi
    • 1
  • Wang Yangchuan
    • 1
  1. 1.Institute of GeochemistryAcademia SinicaGuiyang

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