青海省都兰县郎日扎矿区地球化学特征及找矿远景分析  

Analysis of geochemical characteristics and prospecting prospect in Langriza Mining Area,Dulan County,Qinghai Province

作　　者：李世恩 杨宝荣 裴有生 Li Shi′en;Yang Baorong;Pei Yousheng(Qinghai Third Geological Exploration Institute of Nonferrous Metals,Xining 810013,China;Qinghai Second Geological Exploration Institute of Nonferrous Metals,Xining 810007,China)

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

出　　处：《能源与环保》2022年第11期127-133,共7页CHINA ENERGY AND ENVIRONMENTAL PROTECTION

基　　金：青海省地质勘查基金项目(QH2020-DJ98)。

摘　　要：郎日扎矿区大地构造位置处于塔柴板块南缘,东昆仑造山带东段,雪峰山一布尔汗布达钴、金、铜成矿带内,成矿地质条件较好,是金、银、铜、钴、镍、铅、锌等成矿的有利地段。通过1∶2.5万水系沉积测量,圈定综合异常20处,异常主要以Au、Ag、Cu、W、Mo、Co、Ni、Cr等元素为主,各元素套合性较好,强度较高,规模较大。异常区内共发现8条含矿带,圈定AuⅠ-1、AuⅡ-1、AuⅢ-1、AgAuⅠ-1、CuⅠ-1等矿体,通过与邻区果洛龙洼金矿地球化学特征及成矿地质条件对比研究,成矿条件类似﹐矿化线索明显受构造蚀变带控制,可作为较好的找矿线索,具有较大的找矿潜力。The geotectonic position of Langriza mining area is located in the southern margin of Tachai Plate,the eastern section of the East Kunlun orogenic belt,and the Xuefengshan-Buerhanbuda ta,Diamond and copper metallogenic belt.The metallogenic geological conditions are good,and it is a favorable area for the mineralization of gold,silver,copper,cobalt,nickel,lead and zinc.Based on the 1∶25000 stream sedimentation survey,20 comprehensive anomalies were delineated,and the anomalies were mainly Au,Ag,Cu,W,Mo,Co,Ni,Cr and so on.The elements had good cycleability,high strength and large scale.A total of 8 ore-bearing belts were found in the abnormal area,and orebodies such as AuⅠ-1,AuⅡ-1,AuⅢ-1,AgAuⅠ-1 and CuⅠ-1 were delineated.Through comparative study of geochemical characteristics and metallogenic geological conditions with adjacent Guolongwa gold deposit,the metallogenic conditions were similar.The mineralization clue is obviously controlled by tectonic alteration zone,which can be used as a better prospecting clue and has great prospecting potential.

关 键 词：东昆仑造山带 郎日扎矿区 地球化学特征 找矿远景分析 

分 类 号：P619.14[天文地球—矿床学]