安徽宁国石柱山铅锌多金属矿床地球化学与找矿潜力研究

Geochemical Characteristics and Prospecting Potential of the Shizhushan Polymetallic Deposit,Ningguo,Anhui,China

安徽宁国地区已发现金、铜、钨、钼、铅锌等矿点,但由于以往地质工作程度低,尚未取得较大的找矿成果。本次工作对宁国石柱山地区开展1∶10000土壤地球化学测量,通过对元素数据的多元统计分析和成矿潜力分析,圈定土壤地球化学单元素异常171个,综合异常3个。根据综合异常特征以及异常找矿潜力的分析,三个综合异常均具有较好的寻找中低温热液充填型铅锌多金属矿床的找矿潜力。最后结合成矿地质条件,对异常实施验证,发现五条脉状铅锌多金属矿(化)体,长度超过1公里的矿体有两条,Pb平均品位3.87%,Zn平均品位1.20%,矿体受控于北东走向、南东倾向的断裂,显示该地区具有寻找断裂控制的铅锌多金属矿床的潜力。

Cash,copper,tungsten,molybdenum,lead zinc and other mineral deposits have been discovered in the Ningguo area of Anhui Province,but due to the low level of geological work in the past,significant exploration results have not been achieved.This work conducted a 1:10000 soil geochemical survey in the Shizhushan area of Ningguo.Through multivariate statistical analysis of element data and analysis of mineralization potential,171 single element anomalies and 3 comprehensive anomalies in soil geochemistry were identified.Based on the analysis of comprehensive anomaly characteristics and anomaly prospecting potential,all three comprehensive anomalies have good prospecting potential for medium and low temperature hydrothermal filled lead-zinc polymetallic deposits.Finally,based on the geological conditions of the mineralization,the anomalies were verified and five vein shaped lead-zinc polymetallic deposits(mineralized)were discovered.Two ore bodies with a length exceeding 1 kilometer were found,with an average Pb grade of 3.87%and an average Zn grade of 1.20%.The ore bodies were controlled by northeast and southeast trending faults,indicating the potential for finding fault controlled lead-zinc polymetallic deposits in the region.