Prospecting Potential Prediction of Granite Outer Contact Zone Type Uranium Deposit of Pingtian in Xiazhuang Ore Field of Northern Guangdong
The Pingtian granite outer contact zone type uranium deposit in Xiazhuang uranium ore field,northern Guangdong Province,mainly exists in metamorphic sandstone of outer contact zone of Guidong rock mass,which is controlled by NE-trending structure,hydrothermal activity,lithology and contact zone.The hom-ogenization temperature and fluid salinity of uranium ore bodies in this area were tested by the method of fluid inclusion temperature measurement and analysis.The test results show that the homogenization temperature of u-ranium-containing inclusions is 150.0℃～252.0℃,and the fluid salinity is 0.411～4.857 wt％NaCl eqv,which belongs to the range of low temperature and low salinity.The hydrothermal activity in Pingtian area is characterized by multiple stages,ore-bearing structure development,strong alteration of surrounding rock,low temperature and low salinity,which is a favorable geological condition for uranium mineralization and one of the important areas with high potential for granite out-belt type uranium prospecting in Xiazhuang uranium ore field.
Xiazhuang depositGranite outer contact zone type uranium depositFluid inclusion tempera-ture measurementHydrothermal activityProspecting potential
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