广西东桥锑矿地质特征及找矿远景

在对罗富东桥锑矿区地质特征、成矿地质条件、矿床成因进行深入分析的基础上,总结了矿区物化探异常特征并对异常特征进行了解译评价,结果表明:1地表地球化学扫面显示矿区内发育有Sb、Zn、Cu、As、Pb、Hg异常,其中Ⅱ号综合异常区成矿地质条件极其有利,围岩蚀变普遍发育,发现多条矿(化)脉,异常范围宽、强度大,Sb异常形态呈EW向似环状分布,极大值为252×10-6,平均值为37×10-6;2Sb、Zn、Pb、Sn、Cu、Ag等成矿元素浓集中心较吻合,As、Hg等元素异常较强,异常中心与成矿元素异常中心较吻合;3M2磁异常呈散点状、串珠状分布,构成近东西向的串状异常,且与发现的矿化线索一致;4更龙坡矿区视极化率平均值为2.746%,显示有硫化物的存在。综合上述矿区地质、化探、物探信息,对区内找矿远景进行了分析,圈定了更龙坡找矿靶区,为区内找矿工作提供指导。

Geological Characteristics and Ore-Prospecting Vision in Dongqiao Antimony Deposit，Guangxi Province

The mine geological characteristics，metallogenic geological conditions and deposit genesis of the Dongqiao antimony deposit are analyzed.Based on this，the mining geophysical and geochemicals anomalies characteristics of the mining area are summarized and interpreted.The results show that：①the surface geochemical scans show that，the Sb，Zn，Cu，As，Pb and Hg anomalies are existed in the mining area.Among these，the ore-forming geological conditions of comprehensive anomaly areaⅡare extremely advantageous，and the wall rock alteration is developed，several veins are found with wide abnormal range and high abnormal intensity.The abnormal morphology of Sb is distributed with circular in EW，with the maximum outliers of 252×10-6，and the average outliers of 37×10-6；②the concentration of the ore-forming elements such as Sb，Zn，Pb，Sn，Cu，Ag matches well with each other.The abnormal intensity of As and Hg are higher，and its abnormal center fit well with the anomaly center of metallogenic elements；③M2 magnetic anomaly distributes with scattered points and beaded form，they constitute near east-west bunch of anomaly，besides that，the M2 magnetic anomaly characteristics are consistent with the mineralization clues that are already found；④the average apparent polarizability of mining area is 2.746%，which shows the presence of sulphide.The ore-prospecting vision of the mining area is analyzed and the Genglongpo prospecting target area is selected based on the above geological，geochemical and geophysical information，which provides the guiding for ore-prospecting in the area.