青海省都兰县各玛龙地区银多金属矿地质矿产特征及找矿前景分析  

Geological characteristics and prospecting prospect of silver polymetallic deposit in Gemalong Area,Dulan County,Qinghai Province

作　　者：裴有生 陶志华 李世恩 薛长军 Pei Yousheng;Tao Zhihua;Li Shi′en;Xue Changjun(Qinghai Second Geological Exploration Institute of Nonferrous Metals,Xining 810007,China;Qinghai Third Geological Exploration Institute of Nonferrous Metals,Xining 810013,China)

机构地区：[1]青海省有色第二地质勘查院,青海西宁810007 [2]青海省有色第三地质勘查院,青海西宁810013

出　　处：《能源与环保》2022年第11期120-126,共7页CHINA ENERGY AND ENVIRONMENTAL PROTECTION

基　　金：青海省地质勘查基金项目(QH2020-DK16)。

摘　　要：研究区位于东昆仑伯喀里克—香日德印支期金、铅、锌、铜、稀有、稀土金属成含矿蚀变带,成矿条件良好。区域内地球化学背景以Ag、Au、Pb、Zn为主,研究区内1∶5万水系沉积物异常表现为强富集状态,通过开展1∶2.5万水系沉积物测量查证,圈出GA14、GA15、GA18号3处Ag、Au(Pb、Zn)综合异常。其中GA15、GA18号综合异常为矿致异常,共圈出5条近南北向含矿化蚀变带,矿化带长220~1500 m,宽30~180 m,控制斜深160~320 m。圈定31条银多金属矿体,18条矿化体,矿体长68~150 m,厚0.65~5.69 m,控制斜深40~125 m,Au品位0.86~3.19 g/t,Ag品位45.3~2300.0 g/t,Pb品位0.30%~3.52%,Zn品位0.53%~2.12%,Cu品位0.21%~1.30%。综合分析,研究区具有较大的找矿空间,是寻找中低温构造热液型银多金属矿的有利靶区。The work area is located in the Bqalik-Xiangri De IndoChinese gold,lead,zinc,copper,rare and rare earth metal ore-bearing alteration zone in east Kunlun,with good metallogenic conditions.The geochemical background of the region is dominated by Ag,Au,Pb and Zn,among which the 1∶50000 stream sediment anomalies in the working area are strongly enriched.By carrying out the 1∶25000 stream sediment survey and verification,three AgAu(PbZn)comprehensive anomalies in GA14,GA15 and GA18 are identified.Among them,GA15 and GA18 comprehensive anomalies are ore-induced anomalies,and a total of five near-north and south mineralized alteration belts are delineated.The length of the mineralized belt is 220~1500 m,the width is 30~180 m,and the control inclined depth is 160~320 m.There are 31 silver polymetallic ore bodies and 18 mineralized bodies.The ore bodies are 68~150 m long,0.65~5.69 m thick and 40~125 m deep.The grade of Au is 0.86~3.19 g/t,Ag is 45.3~2300.0 g/t,Pb is 0.30%~3.52%and Zn is 0.53%~2.12%.Cu grade 0.21%~1.30%.Comprehensive analysis shows that the working area has a large prospecting space and is a favorable target area for searching middle-low temperature structural hydrothermal silver polymetallic ore.

关 键 词：东昆仑造山带 各玛龙地区 矿床地质特征 找矿前景分析 

分 类 号：P619.14[天文地球—矿床学]