分量化探在琶江地区深部铀矿勘查中的应用研究OA

The Pajiang deposit(401)is the only small uranium deposit found in the Fogang pluton.To evaluate the potential of uranium mineralization in the deep part of the deposit and validate the effectiveness of partial extraction geochemical exploration method as well as searching the indicator elements combination for deep uranium exploration,the partial extraction geochemical exploration was carried out in the intersection part of Shegang fault,faults No.3 and No.17,where favorable uranium metallogenic geological conditions are identified.The method's validity test and prospecting practice in the periphery of the deposit demonstrate that partial extraction geochemical exploration is both feasible and effective in predicting concealed deep uranium deposits in the Pajiang area,with U-Mn-Be-Ba serving as an indicator element combination.Based on the anomalies of uranium exploration indicator elements and their geological conditions,two areas(A and B)were predicted as the favorable targets for uranium mineralization around the Pajiang deposit(401).After trench exploration,three industrial mineralization sector were discovered with the horizontal thickness and grade of 1.16 m(0.083%),0.74 m(0.093%)and 0.28 m(0.646%),respectively,which not only have good prospecting and application effect,but also lay a solid foundation for expanding the scale of Pajiang deposit.