广西向阳坪铀矿床某构造带矿化趋势面分析及成矿预测

Tendency Surface Analysis and Metallogenic Prediction of Fx Structural Belt in Xiangyangping Uranium Deposit,Guangxi

以苗儿山岩体中段向阳坪铀矿床为研究对象,收集了向阳坪铀矿床某F x构造带15线-0线-32勘探线矿(化)段数据,利用统计分析方法开展研究。向阳坪铀矿床某Fx构造带矿(化)段集中分布于0~16勘探线,Fx10和Fx04构造是主要含矿构造。Fx10构造0~16勘探线矿化品位高,厚度大,成矿环境稳定,是矿化富集中心。Fx10构造具有成矿后期改造的特征,矿化向西南方向倾伏,倾伏角20°~25°,矿化受厚度影响大。Fx04构造矿化富集程度不高,铀矿体品位高,厚度小。Fx04构造矿化向西南方向倾伏,倾伏角30°~35°,矿体呈不连续薄板状在构造内分布,矿化受品位影响大。根据矿化规律分析结果,预测Fx10构造16勘探线深部650~800 m标高位置为矿化富集中心,Fx04构造8~28勘探线深部可能发育铀矿化。

The Xiangyangping uranium deposit is located in the middle part of Miaoershan pluton. The data of uranium mineralization fragments of line 15-0-32 in Fx structural belt of this uranium deposit was collected and analyzed with tendency surface analysis. Fx10 and Fx04 are the main ore-bearing structure in Fx structural belt. Most of the uranium mineralization fragments are distributed from line 0 to line 16. The area from line 0 to line 16 is the enriched mineralization zone in Fx10 structure. The grade of uranium mineralization is high and the thickness of ore-body is large at this zone. The uranium mineralization in Fx10 structure is plunged to SW at plunge angles of 20°~25° and has the characteristic of multiphase ore-forming process. The uranium mineralization is not strongly enriched in Fx04 structure. The grade of uranium mineralization is high and the thickness of ore-body is small. The uranium mineralization in Fx04 structure is plunged to SW at plunge angles of 30°~35° and has the characteristic of discontinuous. As the conclusion of tendency surface analysis, it was predicted that uranium mineralization enriched at the elevation from 650 m to 800 m in line 16 of Fx10 structure and at the deep from line 8 to line 28 in Fx04 structure.