Study on aeroradiometric weak uranium anomaly above in-situ leachable sandstone-type uranium deposit and its prospecting significance

Based on the serious study on aeroradiometric data above uranium deposits No. 511 and No. 512 at the southern margin of Yili basin, Xinjiang weak elevation of uranium content above uranium ore bodies has been discovered. Therefore, a new concept of 'weak uranium anomaly' above in-situ leach-able sandstone-type uranium deposit has been proposed. Moreover, on the basis of geogas migration mechanism and the theory of radon relay migration, the formation mechanism of 'weak uranium anomaly' is discussed, and the extraction methods of aeroradiometric weak uranium anomaly are introduced, Finally, it is concluded, that 'weak uranium anomaly' can be fully detected by high-sensitive aeroradiometric method, and that weak uranium anomaly can be applied to the early-stage prospecting prognosis as a kind of direct indication of information. (authors)