Journal of University of Chinese Academy of Sciences >
Genetic Relation of Ore-Forming Fluids andCarbonatite-Syenite Complex in MaoniupingREE Deposit, Sichuan Province,China: A Review
Received date: 2004-03-25
Online published: 2004-07-10
Supported by
the Major State Basic Research Program of China (G1999043203) and National Natural Science Foundation of China (40303004)
The Maoniuping REE deposit is the second largest primary light REE deposit in China.Fluorite is one of main gangue minerals in the orefield. Carbonat ites and syenites are spatially andtemporally associated with rare earth mineralization. Based on the previous geochemical studies of fluoriteand carbonat ite-syenite complex, we review the genetic relation of REE ore-forming fluids andcarbonatite-syenite complex. It shows that carbonatites and syenites have similar REE distributionpatterns, ( 87SrP87Sr) 0, ( 143NdP144Nd) 0, 206PbP204Pb, 208PbP204Pb ratios, and plot to the area between themantle end-member EM1 and EM2.They were formed in orogenic setting. Fluorites associated with REEmineralization display different REE distribution patterns, but their Sr, Nd, Pb isotopic ratios areuniform, and are similar to those of carbonatites and syenites. This suggests that the different REEfluorites were products of the same source, and REE ore-forming fluids were related to carbonat ite andsyenite magmas.
Key words： ore-forming fluids; carbonat ite-syenite; fluorite; Maoniuping REE deposit
XU Cheng , HUANG Zhi-Long , QI Liang . Genetic Relation of Ore-Forming Fluids andCarbonatite-Syenite Complex in MaoniupingREE Deposit, Sichuan Province,China: A Review[J]. Journal of University of Chinese Academy of Sciences, 2004 , 21(4) : 557 -561 . DOI: 10.7523/j.issn.2095-6134.2004.4.020
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