Deposits of REE-rich clay, occurring in the weathering profiles of individual granites within the Longnan granite complex (consisting of biotite, biotite-muscovite and muscovite granites). The mineralized area is about 40 km2 at surface. The average thickness of the orebody is around 10 m, but can be up to 29 m locally.
References
- Wu, C.Y., and Guo, Z.J. (1989): Geochemistry of REE in the weathering crust of granites in Longnan, Jiangxi. Acta Geologica Sinica 63(4), 349-362.
- Wu, C.Y., Huang, D.H., and Guo, Z.X. (1990): REE geochemistry in the weathered crust of granites, Longnan area, Jiangxi Province. Acta Geologica Sinica 64(3), 193-210.
- Wu, C., Yuan, Z., and Bai, G. (1996): Rare earth deposits in China. In: Jones, A.P., Wall, F., and Williams, C.T. (Eds.): Rare Earth Minerals: Chemistry, Origin, and Ore Deposits. Mineralogical Society Series, Vol. 7, Chapman and Hall (London), pp. 281-310.
- Orris, G.J., and Grauch, R.I. (2002): Rare Earth Element Mines, Deposits and Occurrences. USGS Open-File Report 02-189.
- Zhiwei Bao and Zhenhua Zhao (2008): Geochemistry of mineralization with exchangeable REY in the weathering crusts of granitic rocks in South China. Ore Geology Reviews 33, 519-535.
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