摘要
在平地幅开展1∶5万水系沉积物测量,对图幅内系统采集的样品进行Au、Ag、As、Sb、Hg、W、Sn、Mo、Bi、Cu、Pb、Zn、Cd、Co、Ni、Cr、Mn、Ce、Ba 19种元素的定量分析。研究结果表明,Cu、Ni、Co、Cr、Mn是区内最有找矿潜力的成矿指示元素;聚类分析所划分的4类元素族群(Cu-Mo-Au-As-Sb)、(Ag-Pb-Zn)、(W-Sn-Bi-Ce)、(Ni-Cr-Co-Mn)主要与区域重大地质作用和相应的含矿地层、岩浆岩相关,通过因子分析得到As-Au-Cu-Mo;Co-Mn-Ni;Ag-Pb-Zn;Ce-Sn共4类元素组合,其中As、Au、Cu、Mo及Ag、Pb、Zn组合反应与岩浆作用及中低温热液作用相关;Co、Mn、Ni与基性超基性岩体相关;Ce、Sn与中酸性岩浆活动相关。在综合异常分析和查证的基础上,结合区域成矿地质条件、区内矿产地质特征,归并综合异常10个,划分成矿远景区3个,指出区内铜、金、银、钼、钴的找矿方向。
Based on geochemical measurements results of stream sediments with the scale of 1∶50000 of Pingdi sheet,19 elements have been tested,including Au、Ag、As、Sb、Hg、W、Sn、Mo、Bi、Cu、Pb、Zn、Cd、Co、Ni、Cr、Mn、Ce and Ba.The results show that Cu、Ni、Co、Cr and Mn are the ore-forming indicator elements with the most prospecting potential in the area.The four groups of elements(Cu-Mo-Au-As-Sb),(Ag-Pb-Zn),(W-Sn-Bi-Ce) and(Ni-Cr-co-Mn) divided by cluster analysis are mainly related to regional geological processes and corresponding ore-bearing strata and magmatic rocks.Through factor analysis,four kinds of element combinations have been obtained,including As-Au-Cu-Mo,Co-Mn-N,Ag-Pb-Zn,Ce-Sn.The As、Au、Cu、Mo、Ag、Pb、Zn elements combination reflect that they are related to magmatism and middle-low temperature hydrothermal process.the combination of Co、Mn、Ni elements are mainly related to the basic ultrabasic rock mass,and the Ce、Sn assemblages are related to intermediate-acid magmatic activity.On the basis of comprehensive anomaly analysis and verification,combined with regional metallogenic geological conditions and mineral geological characteristics in the area,10 anomalies were integrated,and 3 metallogenic prospective areas were divided,and the prospecting direction of copper,gold,silver,molybdenum and cobalt in the area was pointed out.
作者
徐小飞
王疆丽
申红涛
邓远文
罗杨
XU Xiao-Fei;WANG Jiang-Li;SHEN Hong-Tao;DENG Yuan-Wen;LUO Yang(Geological Team,Sichuan Bureau of Geology and Mineral Exploration and Development,Emei,Sichuan 614200;Sichuan Geological Industry Group Co.,LTD.,Chengdu 610036)
出处
《四川地质学报》
2022年第3期469-473,共5页
Acta Geologica Sichuan
关键词
1∶5万水系沉积物
成矿远景区
平地幅
会理-会东矿集区
stream sediments with the scale of 1∶50000
metallogenic prospective area
Pingdi sheet
Huili-Huidong ore concentration area
