Transportation of REE in the Ductile Shear Zone in Hetai Gold Deposit, Guangdong Province
来源期刊：JOURNAL OF RARE EARTHS2003年第6期
论文作者：王鹤年 华仁民 杨凤根
Key words：geochemistry; REE; compositional variation; ductile shear zone; Hetai gold deposit; Guangdong province;
Abstract: The REE transportation in two sorts of mylonites of ductile shear zone, in Hetai gold deposit, Guangdong province was studied. The results show that there is REE compositional variation regularly in the ductile shear zone. When mica-quartz schist and migmatite are changing into mylonites or ultramylonites, I.e., along with intensifying deformation, the contents of each rare earth element and the total contents of the LREE, HREE and REE increase or decrease regularly, but the REE patterns of the rock are accordant. The isocon diagram of the tectonic rocks before and after deformation shows that the REE compositional variation of the mylonites or ultramylonites are very small, but there is a few REE moving in or out in the rock deformation. The reason of the REE compositional variation is that there are volume change and fluid flow in the rock deformation, and it leads to the LREE relative enrichment and HREE relative loss.
王鹤年1，华仁民1，杨凤根2
(1.Department of Earth Science, State Key Laboratory for Mineral Deposits Research, Nanjing University,Nanjing 210093, China;
2.Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China)
Abstract:The REE transportation in two sorts of mylonites of ductile shear zone, in Hetai gold deposit, Guangdong province was studied. The results show that there is REE compositional variation regularly in the ductile shear zone. When mica-quartz schist and migmatite are changing into mylonites or ultramylonites, I.e., along with intensifying deformation, the contents of each rare earth element and the total contents of the LREE, HREE and REE increase or decrease regularly, but the REE patterns of the rock are accordant. The isocon diagram of the tectonic rocks before and after deformation shows that the REE compositional variation of the mylonites or ultramylonites are very small, but there is a few REE moving in or out in the rock deformation. The reason of the REE compositional variation is that there are volume change and fluid flow in the rock deformation, and it leads to the LREE relative enrichment and HREE relative loss.
Key words:geochemistry; REE; compositional variation; ductile shear zone; Hetai gold deposit; Guangdong province;
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