安徽省甲溪—儒村金银多金属矿地质特征及找矿分析  

Geological characteristics and prospecting analysis of Jiaxi-Rucun,gold-silver polymetallic mines in Anhui Province

作　　者：汪忠卫 WANG Zhongwei(The Second Hydrological Engineering Geological Survey Institute of Anhui Geological Survey Bureau,Wuhu 241000,Anhui,China)

机构地区：[1]安徽省地勘局第二水文工程地质勘查院,安徽芜湖241000

出　　处：《资源信息与工程》2024年第1期9-13,共5页Resource Information and Engineering

摘　　要：区域地质调查和1∶200000水系沉积物测量结果表明,安徽省黟县甲溪—休宁县儒村一带具有较好的成矿地质条件,寻找金银多金属矿的潜力较大。为进一步查明区内地质特征、圈定异常靶区及评价找矿潜力,在区内开展了以1∶50000水系沉积物测量、1∶10000土壤测量、1∶2000岩石剖面地球化学测量及槽探为主的金银多金属矿预查工作。综合前人资料及本次预查工作成果:1)总结了区内地质、物探及化探特征,圈定了2个以Au、As、Sb为主的综合异常靶区,分别为岭下朱靶区(A)和高桥靶区(B);2)圈定了4处Au-As-Sb综合异常带,发现金矿化点2处,其中TC07-9号样品Au品位为0.32×10^(-6),TC14-3号样品Au品位为0.40×10^(-6);3)分析认为区内成矿类型主要为受地层岩性和构造控制的含金热液蚀变岩型和含金石英脉型。本次系统性预查工作为工作区下一步找矿圈定了靶区,也为后续普查、详查等工作提供重要地质依据。The results of the regional geological survey and the 1∶200000 water sediment survey carried out in the area between Jiaxi in Yixian County and Rucun in Xiuning County,Anhui Province,indicate good geological conditions for mineralization,particularly the potential for gold-silver polymetallic ores.In order to further identify the geological characteristics,define the anomaly target area,and evaluate the potential for mineralization,a pre-survey of gold and silver polymetallic mines was carried out in the area,mainly including a 1∶50000 aquatic sediment survey,a 1∶10000 soil survey,a 1∶2000 geochemical survey of rock profile,the trench survey.Based on previous data and the results of this pre-survey,the following important progress has been made:1)This paper summarized geological,physical and chemical exploration features in the area and identified two composite anomaly target zones dominated by Au,As and Sb,namely,Lingxia Zhu target zone(A)and Gaoqiao target zone(B);2)four Au-As-Sb composite anomalous zones were circled,and two gold mineralization sites were discovered,of which sample TC07-9 has an Au grade of 0.32×10^(-6 )and sample TC14-3 has an Au grade of 0.40×10^(-6);3)The mineralization types in the area were believed to be mainly gold-bearing hydrothermal alteration rocks and gold-bearing quartz veins controlled by stratigraphic lithology and tectonics.The systematic pre-survey work has outlined the target area for the next stage of mineral exploration in the region,providing an important geological basis for subsequent census and detailed investigation.

关 键 词：金银多金属矿 地质特征 找矿分析 甲溪—儒村 

分 类 号：P618[天文地球—矿床学]