摘要
通过于内蒙古四子王旗幅和东八号幅地区开展1∶5万土壤地球化学测量工作,对区内18种元素进行了含量、分布和组合特征分析,圈定综合异常15处,并于部分异常区内开展了地表踏勘、探槽和取样等分析验证等工作。结果显示,区内As、Pb、Sb、Rb、Li、La、Ag元素浓集比率k大于1.2,呈现相对富集特征,As、Au、Pb、Ag、Cd、Sb、Mo、Bi、Zn、Cu、Li元素变化系数Cv大于1,呈现易于活化迁移、成矿可能性大特征。依据相关性,区内元素可分为As-Pb-Cd-Ag、Cu-Zn-Sn-Y、Mo-W-Sb-Bi-U-Li和Th-La-Rb-Au四个簇群,其中As-Pb-Cd-Ag和Cu-Zn-Sn-Y组内元素相关性好,可能在岩浆结晶末期同时晶出,或者以伴生的形式先后晶出。部分异常区地表踏勘、探槽和取样分析结果显示,异常区内石英脉和蚀变发育,与化探异常吻合程度较高,成矿元素品味较高且矿点发育,示矿意义明显,为区内找矿靶区圈定提供了有效参考。
The 1∶50,000 soil geochemical survey was carried out in the map of Siziwang Banner and the map of Dongbahao of In‐ner Mongolia,and the content,distribution and combination characteristics of 18 elements in the area were analyzed,15 comprehen‐sive anomalies were identified,and the surface reconnaissance,probing and sampling analysis and verification work were carried out in some abnormal areas.The results showed that the concentration ratio of As,Pb,Sb,Rb,Li,La and Ag in the area are greater than 1.2,showing the relative enrichment characteristics,and the variation coefficient Cv of As,Au,Pb,Ag,Cd,Sb,Mo,Bi,Zn,Cu and Li are greater than 1,showing the characteristics of easy activation and migration and high mineralization possibility.According to the correlation,the elements in the region can be divided into four clusters:As-Pb-Cd-Ag,Cu-Zn-Sn-Y,Mo-W-Sb-Bi-U-Li and Th-La-Rb-Au.Among them,As-Pb-Cd-Ag and Cu-Zn-Sn-Y groups have good correlation and may crystallize simultaneously at the end of magma crystallization or in a concomitant form.The results of surface exploration,troughs and sampling analysis in some abnor‐mal areas show that the quartz veins and alteration development in the abnormal areas are in good agreement with the geochemical anomalies,the ore-forming elements are of high taste and the ore points are developed,and the ore-indicating significance is obvi‐ous,which provides an effective reference for the delineation of prospecting targets in the area.
作者
杜立华
高雄
陈飞飞
郑国强
DU Li-Hua;GAO Xiong;CHEN Fei-fei;ZHENG Guo-qiang(Comprehensive Survey Team of Inner Mongolia Nonferrous Geological Survey,Hulun Buir 010011,China)
出处
《有色矿冶》
2024年第3期1-4,共4页
Non-Ferrous Mining and Metallurgy
关键词
四子王旗幅
东八号幅
土壤地球化学
浓集比率
变异系数
异常圈定
map sheet of Siziwang Banner
map sheet of Dongbahao township
soil geochemistry
concentration ratio
coefficient of variation
anomaly delineation
