Hydrogen and Oxygen Isotope Characteristics and Genesis of the Uranium Deposit in Lianshanguan(3075),Eastern Liaoning Province
Lianshanguan area is located in uranium metallogenic province in the northern margin of North China Craton.It is one of the main uranium deposit prospect areas in eastern Liaoning Province,and the Lianshanguan(3075)uranium deposit is one of the most rich grade hydrothermal uranium deposits.In order to explore the source of ore-forming fluid,analyze the ore-forming model and provide the basis for pros-pecting outside the mine area,the hydrogen and oxygen isotope characteristics of sericite in different ore-forming stages were compared.The results show that the δ18OH2O values of sericite in the early stage of mineral-ization are 7.04‰to 7.24‰with an average value of 7.14‰,and the δDH2O values are-45.42‰to-40.62‰with an average value of-43.02‰.The δ18OH2O values of sericite in the main ore-forming stage range from 4.52‰ to 6.42‰ with an average value of 5.47‰,and the δDH2O values range from-16.15‰ to-15.85‰with an average value of-16.00‰.The δ18OH2O and δDH2O values are 1.46‰and 4.21‰respectively.The re-gional metamorphic deformation causes the minerals in Liaohe Group to dehydrate and form metamorphic flu-id,which flows from Liaohe Group to Lianshanguan rock mass through the contact zone along the fault zone.
Lianshanguan(3075)uranium depositmetamorphic fluidhydrogen and oxygen isotope
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