地质学报2018，Vol.92Issue(4)：769-786,18.
内蒙古巴林左旗双尖子山银多金属矿床微量稀土元素特征及其矿床成因制约
Constraint on the Genesis of the Shuangjianzishan Silver-Polymetallic Deposit, Balinzuo Qi,Inner Mongolia: Evidence from Trace and Rare Earth Elements
摘要
Abstract
The geochemistry research of the super-large Shuangjianxishan silver polymetallic deposit is still poor and this restricts our understanding of metallogenic condition,source of the ore forming material and genesis of the deposit.The study carried out detailed analysis of the trace and rare earth elements for sphalerite,pyrite,galena,and arsenopyrite from the disseminated sulfide ore,vein sulfide ore,and massive sulfide ore.The results show that the metallogenic fluid is characteristic of Cl-rich hydrothermal fluid with temperature and fO2 gradually decreasing from early to late ore-forming stages.By comparing theLREE/HREE,δCe and δEu characteristics of sulfide and magmatic rocks exposed (dikes) in the mining area,and the difference of As,Sn,and Sb in the different orebodies,this study suggests that the ore-forming materials are multiple sources or the superposition of multistage mineralization.The enrichment of mantle derived elements,such as Cu,Co and Cr,suggests that the mantle derived material should not be excluded during the mineralization.Comparison study with magmatic hydrothermal type,SEDEX type,MVT type,and stratabound magmatic hydrothermal superimposed type,the Mn Cd,Sn,Ga,Tl content,Cd/Mn,Zn/Cd ratio and REE of the sphalerite from the Shuangjianzishan deposit shows that the deposit is characteristic of trace and rare earth elements of magmatic hydrothermal fluid and can be classified into the magmatic hydrothermal type.关键词
双尖子山/银多金属矿床/微量元素/稀土元素/内蒙古Key words
Shuangjianzishan/silver polymetallic deposit/trace elements/rare earth elements/Inner Mongolia引用本文复制引用
江彪,武广,陈毓川,张通,刘文元,张彤,李雪娇..内蒙古巴林左旗双尖子山银多金属矿床微量稀土元素特征及其矿床成因制约[J].地质学报,2018,92(4):769-786,18.基金项目
本文得到内蒙古地勘基金内蒙古锡林浩特市—巴林左旗铜多金属矿成矿规律及选区研究项目(2015-01-YS01)和中国地质调查局中国矿产地质与成矿规律综合集成和服务(矿产地质志)项目(编号:DD20160346)联合资助. （2015-01-YS01）
