Clays and Clay Minerals

, Volume 42, Issue 5, pp 576–581 | Cite as

Nacritic Clay Associated with the Jiangshan-Shaoxing Deep Fault in Zhejiang Province, China

  • Z. Y. Shen
  • M. J. Wilson
  • A. R. Fraser
  • M. J. Pearson


A kaolin clay occurring in Carboniferous mudstone near the Jiangshan-Shaoxing deep fault in Zhejiang Province, eastern China was characterized by XRD and IR. Although the dominant mineral appeared to be kaolinite, IR also suggested the possible occurrence of nacrite. This was confirmed by forming intercalation complexes with potassium acetate and with hydrazine hydrate, both water complexes having the same characteristic spacing at 8.35 Â. Different particle size fractions of the kaolin clay were studied and the results indicated that nacrite content increased with increasing particle size. This occurrence of nacrite is consistent with previous findings of the polytype in high temperature and pressure environments.

Key Words

Jiangshan-Shaoxing fault Kaolin Nacritic clay 


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. BGMRZP (Bureau of Geology and Mineral Resources of Zhe-jiang Province). 1982. Regional Geology of Zhejiang Province: Geological memories, Series 1 Numbe. 11. Beijing: Geological Publishing House. (In Chinese).Google Scholar
  2. Biihmann, D. 1988. An occurrence of authigenic nacrite. Clays & Clay Miner. 36: 137–140.CrossRefGoogle Scholar
  3. Ehrenburg, S. N., P. Aargaard, M. J. Wilson, A. R. Fraser, and D. M. L. Duthie. 1993. Depth-dependent transformation of kaolinite to dickite in sandstones of the Norwegian Continental Shelf. Clay Miner. 28: 325–352.CrossRefGoogle Scholar
  4. Farmer, V. C. 1974. The layer silicates. In The Infrared Spectra of Minerals. V. C. Farmer, ed. London: Mineral-ogical Society, 331–363.CrossRefGoogle Scholar
  5. Range, K. J., A. Range, and A. Weiss. 1969. Fire-clay type kaolinite or fire-clay mineral? Experimental classification of Kaolinite-Halloysite minerals. Proc. International Clay Conferenc. 1969. Tokyo. Jerusalem: Israel Universities Press, 3–13.Google Scholar
  6. Ren, Jishun, Chunfa Jiang, Zhengkun Zhang, Deyu Qiu. 1987. Geotectonic Evolution of China. Beijing: Science Press.Google Scholar
  7. Russell, J. D. 1987. Infrared methods. In A Handbook of Determinative Methods in Clay Minerals. M. J. Wilson, ed. Glasgow: Blackie, 133–173.Google Scholar
  8. Russell, J. D., and W. M. Kirkpatrick. 1992. Nacrite from the southern upland fault near Abington, Strathclyde, Scotland. Clay Miner. 27: 253–255.CrossRefGoogle Scholar
  9. Spears, D. A., and R. Kanaris-Sotiriou. 1976. Titanium in some Carboniferous sediments from Great Britain. Geochemica et Cosmochimica Acta 40: 345–351.CrossRefGoogle Scholar
  10. Spears, D. A., and R. Kanaris-Sotiriou. 1976. Ageochemical and mineralogical investigation of some British and other European tonsteins. Sedimentology 26: 407–425.CrossRefGoogle Scholar
  11. Wada, K. 1961. Lattice expansion of kaolinite minerals by treatment with potassium acetate. Amer. Mineral. 46: 78–91.Google Scholar
  12. Wada, K. 1965. Intercalation of water in kaolin minerals. Amer. Miner. 50: 924–941.Google Scholar
  13. Wada, K., and H. Yamada. 1968. Hydrazine intercalation-intersalation for differentiation of kaolin minerals from chlorites. Amer. Miner. 53: 334–339.Google Scholar
  14. Wiewiroa, A., and G. W. Brindley. 1969. Potassium acetate intercalation in kaolinite and its removal: Effect of material characteristics. Proceeding International Clay Conference. 1969. Tokyo. Jerusalem: Israel Universities Press, 723–733.Google Scholar
  15. Wilson, M. J. 1987. X-ray Diffraction. In A Handbook of Determinative Methods in Clay Mineralogy. M. J. Wilson, ed. Glasgow: Blackie, 26–98.Google Scholar

Copyright information

© The Clay Minerals Society 1994

Authors and Affiliations

  • Z. Y. Shen
    • 1
  • M. J. Wilson
    • 2
  • A. R. Fraser
    • 2
  • M. J. Pearson
    • 3
  1. 1.Department of Earth SciencesZhejiang UniversityHangzhouChina
  2. 2.Division of SoilsMacaulay Land Use Research InstituteAberdeenUK
  3. 3.Department of Geology and Petroleum GeologyUniversity of AberdeenAberdeenUK

Personalised recommendations