大兴安岭南段大陶好沟地区地球化学特征与锡多金属找矿靶区  

Geochemical Characteristics and Tin Polymetallic Prospecting Target Area in Da taohaogou area,southern Great Xing’an Range

作　　者：杨星 管育春 邹滔[1] 毛启贵[1] 徐巧 李伟[1] 崔乐乐[1] YANG Xing;GUAN Yuchun;ZOU Tao;MAO Qigui;XU Qiao;LI Wei;CUI Lele(Beijing Institute of Geology for Mineral Resources Co.,Ltd.,Beijing 100012)

机构地区：[1]北京矿产地质研究院有限责任公司,北京100012

出　　处：《矿产勘查》2021年第4期849-857,共9页Mineral Exploration

基　　金：国家重点研发计划课题(编号:2017YFC0601305);青年科学基金项目(编号:41602098);中国地质调查局二级项目“大兴安岭中南段有色金属基地综合地质调查”(编号:DD20190815)联合资助。

摘　　要：大陶好沟位于黄冈梁-甘珠尔庙锡铜铅锌银多金属成矿带的南段,具有较好的锡多金属找矿前景。本文通过对前人1∶5万水系沉积物测量成果的梳理,对大兴安岭南段大陶好沟一带的水系沉积物地球化学特征进行了分析,并对水系沉积物元素含量富集分异特征进行了总结研究。该地区元素富集分异特征显示大陶好沟一带是寻找锡矿床的有利地区。结合本次矿产地质调查研究及1∶1万土壤地球化学测量异常查证工作,圈定了乌尼克吐锡多金属找矿靶区,查明了靶区内Sn、W、Pb、Zn、Ag等8种元素的地球化学异常分布特征和组合规律。成矿元素展布及异常峰值受构造控制明显,呈北西向展布。靶区内异常可分为Sn-W-Cu-As和Pb-Zn-Ag-As-Sb组合两种。综合地质和化探工作成果与地表工程勘查,发现4条锡银铅锌矿(化)体。Dataohaogou is located in the southern section of the Huanggangliang-Ganzhuermiao tin-copper-lead-zinc-silver polymetallic metallogenic belt and has a good prospect for tin polymetallic mineralization.This paper analyzes the geochemical characteristics of the river sediments in the Dataohaogou area of the southern section of the Greater Xing’an Mountains by combing the results of the predecessor’s 1:50,000 river sediment measurement.The enrichment and differentiation characteristics of element content in river sediments are summarized and studied.According to the element enrichment and differentiation characteristics of the area,it is shown that the Dataohaogou area is a favorable area for searching for tin deposits.Combining this mineral geological survey research and the 1:10,000 soil geochemical survey anomaly verification work,delineated the Wuniketu tin polymetallic prospecting target area,The geochemical anomaly distribution characteristics and association rules of 8 elements,such as Sn,W,Pb,Zn and Ag,in the target area are found out.The distribution of metallogenic elements and abnormal peaks are obviously controlled by the structure,and they are distributed in a northwest direction.Abnormalities in the target area can be divided into two types:Sn-W-Cu-As combination and Pb-Zn-Ag-As-Sb combination.The results of comprehensive geological and geochemical exploration work were revealed through surface engineering,and four tin-silver-lead-zinc ore bodies were discovered.

关 键 词：大兴安岭南段 地球化学测量 锡异常 

分 类 号：P595[天文地球—地球化学] P632[天文地球—地质学]