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Application of Soil Radon Survey in the Exploration for Volcanic type Uranium Deposits in Xiangshan
Author(s): 
Pages: 315-321,335
Year: Issue:  z1
Journal: Uranium Geology

Keyword:  Xiangshan areaconcealed orebodyradon measurementradioactive surveyvolcanic type uranium deposit;
Abstract: Xiangshan volcanic type uranium ore field is one of the most important bases of uranium re-source in China.It has been proved by drilling that there are great potential around or beneath the existing deposits.Several geochemical techniques, such as soil radon measurement, ground gamma ray spectrum measurement,natural soil thermoluminescence and total soil method etc.are carried along two profiles where there occurs volcanic type uranium mineralization so as to evaluate the abilities and effi-cency of these methods in detecting concealed uranium mineralization information objectively.Compared with general method of anomaly delineating,the area concentration fractal technique can identify the anomalies related to deep buried uranium mineralization in low radioactive field,and at the same time there is no lose of the strong anomaly without the removal of singular data.The U ore bodies occurred in the fault zone are manifested as a strong and sharp radon anomaly with high contrast detected directly above.The U ore bodies with a distance of 100 to 200m to the fault zone are manifested as a low and gen-tle radon anomaly with low contrast.The typical response to uranium mineralization act as single or multi peak anomalies.However,there are no such significant characteristics in the results of other methods, which means that the anomalies delineated with CA fractal technique can be used in the prediction of mi neralization potential in new areas.
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