安徽小紫山地区铜多金属矿土壤地球化学特征及找矿前景

发布时间：2018-05-27 02:31

  本文选题：铜多金属矿 + 土壤地球化学特征　； 参考：《金属矿山》2017年01期

【摘要】：繁昌县小紫山地区位于安徽省南部,区内铜多金属矿处于安徽沿江成矿带中段,繁昌成矿区东南缘。结合该区1∶5 000地质测量、1∶5 000土壤地球化学测量成果,分析了区域成矿地质背景,并对Cu、Pb、Zn、Mo、As、Sb、Bi、Au等元素的土壤地球化学特征进行了如下分析:首先运用迭代法计算出了测区各元素的地球化学背景值和异常下限,并圈定了区内单元素的异常范围;然后应用多元统计分析方法厘定了区内成矿元素组合,圈定了3处综合异常带作为找矿靶区,即位于测区东北端以Cu、Pb、Zn、Mo为主的Ⅰ#综合异常带和以Cu、Pb、Zn、As、Sb、Bi为主的Ⅱ#综合异常带以及位于测区中部以Cu、Pb、Zn、Mo为主的Ⅲ#综合异常带。研究表明:区内Cu、Pb、Zn、Mo异常浓集中心明显,套合程度高,主要沿NE向呈带状展布,异常强度东高西低,与区内构造蚀变带和地表矿化体对应较好,为后续找矿工作提供了丰富完整的地球化学找矿信息。在上述分析的基础上,综合区内成矿物质来源条件、成矿地质条件以及类比邻近同类型铜多金属矿床,认为区内形成中—低温热液脉型和矽卡岩型铜多金属矿床的潜力较大。
[Abstract]:The Xiaozishan area of Fanchang County is located in the south of Anhui Province. The copper polymetallic deposit in the area is located in the middle section of the metallogenic belt along the Yangtze River in Anhui Province and in the southeast margin of the Fanchang metallogenic area. Based on the results of 1: 5 000 geochemistry survey of the 1:5 geological survey in this area, the regional metallogenic geological background is analyzed. The characteristics of soil geochemistry of Cu ~ (2 +) Pb ~ (2 +) Zn ~ (2 +) Mo ~ (2 +) S _ (B) ~ (+) ~ (2 +) ~ (2 +) are analyzed as follows: firstly, the geochemical background value and anomaly lower limit of each element in the area are calculated by iterative method, and the anomalous range of single element in the area is delineated. Then using the method of multivariate statistical analysis to determine the metallogenic element assemblage in this area and delineate three synthetic anomalous zones as the prospecting target area. That is to say, in the northeast end of the survey area, the integrated anomaly zone is 鈪，

本文编号：1940055