西昆仑甜水海-胜利河一带银异常特征及找矿前景  

Analysis of Silver Anomaly Characteristics and Prospecting in Tianshuihai Shenglihe Area,West Kunlun

作　　者：徐仕琪 冯京[2] 薛春纪[1] 周军[3] 李健 Xu shiqi;Feng Jing;Xue Chunji;Zhou Jun;Li Jian(School of Earth Sciences and Resources,China University of Geosciences,Beijing,100083,China;Xinjiang Bureau of Geology and Mineral Resources exploration and Development,Urumqi,Xinjiang,830000,China;Xinjiang Uygur Autonomous Region Geological Survey Institute,Urumqi,Xinjiang,830000,China;Mineral Experimental Research Institute of Xinjiang Uygur Autonomous Region)

机构地区：[1]中国地质大学地球科学与资源学院,北京100083 [2]新疆维吾尔自治区地质矿产勘查开发局,新疆乌鲁木齐830000 [3]新疆维吾尔自治区地质调查院,新疆乌鲁木齐830000 [4]新疆维吾尔自治区矿产实验研究所,新疆乌鲁木齐830000

出　　处：《新疆地质》2020年第4期463-468,共6页Xinjiang Geology

基　　金：国家自然科学基金项目西昆仑玛尔坎苏石炭纪大型碳酸锰成矿带主要控制因素及成矿规律(U1703242);自治区科技厅天山青年计划(2017Q065)联合资助。

摘　　要：自火烧云超大型铅锌矿床发现以来,西昆仑甜水海成为新疆乃至全国关注的铅锌矿成矿带。以西昆仑胜利河1∶20万区域银、钨、锡、锑元素地球化学异常为线索,通过野外地质调查、矿相学鉴定、电子探针背散射图像及电子探针化学成分分析,发现含银矿物。对该区银矿矿物学特征进行研究,对银的富集机理进行探讨,指出银矿物演化趋势为:银的硫盐矿物→银的硫化物→银的自然金属。查明该地区银矿矿致异常,发现银品位大于50 g/t以上样品3件,初步分析含银矿物主要为:硫锑铜银矿、脆银矿、红银矿、黝锑银矿和自然银等。在甜水海铅锌矿带发现铜银锡多金属矿尚属首例。采用地球化学块体法预测区域银矿资源量30564 t,指出甜水海胜利河一带具大型银矿找矿前景。In this paper,the author takes the geochemical anomalies of Ag,W,Sn,Sb antimony in Shengli River(1:200000)in the West Kunlun Mountains as clues,the mineral characteristics of metal minerals in the deposit were studied in detail using field geological survey,identification of the ore faces,back scattering image of the electronic probe and chemical composition of electronic probe.At the same time,the chemical formula of metallic minerals was calculated and the mechanism of silver enrichment was discussed.The ore-induced anomalies of silver deposits in this area are preliminarily identified,According to the preliminary analysis,the silver bearing minerals are mainly as follows:polybasite、canfieldite、pyrargyrite、stephanite、freibergite、and native silver.The discovery of Cu Ag Sn poly-metallic ore in the Tianshuihai Pb Zn ore belt is the first case.The author pointed out that there is a large silver prospecting prospect in the Tianshuihai lead zinc metallogenic belt.

关 键 词：胜利河 银异常 银矿物 地球化学 找矿潜力 

分 类 号：P618.52[天文地球—矿床学]