龙首山地区芨岭铀矿床厚大矿体特征及其找矿意义OA

Jiling uranium deposit is a typical sodium-metasomatic hydrothermal uranium deposit in Northwest China,and good prospecting results have been achieved in the deep and peripheral parts of the deposit in recent years.In order to explore the characteristics of the thick uranium ore body in Jiling area,this paper systematically analyzed metallogenic geological characteristics,the distribution characteristics of the thick and large ore body and the ore control factors of Jiling uranium deposit,and concluded that the newly discovered thick uranium ore body in the deep part of the Line 13-29 in the Jilin uranium deposit in recent years was controlled by tectonics,alteration and lithologic interfaces.F101 and F102 faults were ore-controlling faults of Jiling uranium deposit,and F105 was a late-stage mineralization structure that cut through the alteration zones and uranium mineralization.The average ore thickness of a single borehole in the upper wall of F105 is 32.22 m and the average grade is 0.087%,and the average ore thickness of a single borehole in the lower wall is 49.10 m and the average grade is 0.075%,and the ore body extends by 40-120 m.The early exploration work had not controled the lower wall of F105 enough,and the change in understanding the ore control structure was one of the key factor to get the breakthrough of uranium prospecting in this area.The newly discovered thick uranium mineralized zone at depth and around the deposit was found extending steadily,therefore Jiling deposit is expected to become a large uranium deposit through further uranium exploration work,by strengthening the research on the important prospecting clue of the newly discovered vein-like crystalline uranium ore in the deep uranium ore body of the deposit and opening up a second prospecting space in the deep part of Jiling uranium deposit.