西藏芒康西渠河桥铜金多金属矿区化探异常特征分析  

Analysis of Geochemical Anomalies in the Xiquheqiao Copper-Gold Polymetallic Ore Area in Mangkang,Tibet

作　　者：陈明勇 舒华伟 孙玉海 唐果 王芳 CHEN Mingyong;SHU Huawei;SUN Yuhai;TANG Guo;WANG Fang(Kunming Institute of Survey and Design Co.,Ltd.of China Nonferrous Metals Industry,Kunming 650051,China)

机构地区：[1]中国有色金属工业昆明勘察设计研究院有限公司,云南昆明650051

出　　处：《昆明冶金高等专科学校学报》2021年第1期14-19,共6页Journal of Kunming Metallurgy College

摘　　要：芒康西渠河桥铜金多金属矿区地处我国“三江”成矿带中段,通过对矿区进行1∶10000土壤地球化学测量研究,查明区内以Cu、Au为主的元素异常,并圈出以Cu-Au-Ag-Pb-Zn(HS1)、Au-Cu(HS2)、Au-Pb(HS3)为主的3个综合异常带。分析认为HS1、HS2为A1类,有进一步扩大矿床(点)找矿远景或发现新矿种前景的异常;HS3为B3类,推断可能发现矿点及以下矿的异常。通过研究分析元素的异常形态、富集规律,缩小了找矿靶区;根据异常特征,采用槽探、钻探工程对靶区进行查证,圈出多条金矿化体,发现了具有小-中型前景的金矿床,显示出具有找寻斑岩型铜金矿床的潜力。The Mangkang Xiquheqiao copper-gold polymetallic mining area is located in the middle section of China s“Sanjiang”metallogenic belt.Through the study of 1∶10000 soil geochemical surveys in the mining area,the element anomalies dominated by Cu and Au in the area have been identified and circled.Three comprehensive anomalous zones,mainly Cu-Au-Ag-Pb-Zn(HS1),Au-Cu(HS2),and Au-Pb(HS3)are presented.Analysis shows that HS1 and HS2 are A1 types,which will further expand the mineral deposit(point)prospecting prospects or discovering the anomaly of the prospect of new minerals.HS3 is the B3 type,inferring that the anomalies of the ore points and below may be found.Through research and analysis of the anomalous forms and enrichment rules of elements,the prospecting target area is reduced.According to the abnormal features,the target area was verified by trenching and drilling engineering,and multiple gold mineralizations were circled,and gold deposits with small to medium-sized prospects were discovered,showing the potential to find porphyry copper-gold deposits.

关 键 词：“三江”中段 西渠河桥 化探异常 地质解译 

分 类 号：P632[天文地球—地质矿产勘探]