现代地质2025，Vol.39Issue(3)：648-666,19.DOI:10.19657/j.geoscience.1000-8527.2024.073
黑龙江二道坎银铅锌矿床黄铁矿标型特征及其S、Pb同位素研究
Typomorphic Characteristics and Stable Isotopes of Pyrite from the Erdaokan Ag-Pb-Zn Deposit,Heilongjiang Province
摘要
Abstract
For the purposes of extracting genesis and prospecting information of the Erdaokan Ag-Pb-Zn depos-it,a detailed investigation on chemical compositions,trace elements,rare earth element,as well as S-Pb iso-topes of the pyrite related to mineralization.Genetic typomorphic characteristics of the pyrite,such as S/Fe,Au/Ag,Co/Ni,Fe/(S+As),Fe/(S+As),Co-Ni-As,etc.,suggest that this deposit belongs to the interme-diate to epithermal volcanic hydrothermal deposit,with the pyrite from the middle-superficial part of the pros-pecting orebody.The LREE are relatively more enrichment than The HREE.Eu negative anomalies are weak but Ce anomalies are not significant.Relative enrichment high field strength element(HFSE)such as Th,U,P,Hf and Yb.Loss large ion lithophile element(LILE)such as Rb,K and Sr.Ratios of Y/Ho reveal that the pyrite in the oreforming fluid closely related to the crust and mantle.The Zr/Hf and Nb/Ta values indicate that the ore-forming fluid is in a stable environment.However,there may be foreign hydrothermal substances mixed in the ore-forming process.Sulfur isotope values are concentrated in+2.3‰ to+8.6‰,it indicates that the source of ore-forming material is deep.Ratios of 206Pb/204 Pb(18.007-18.034),207Pb/204 Pb(15.501-15.522),and 208Pb/204Pb(37.704-37.755),for the pyrites suggest that the ore-forming materials were sourced mainly from the mantle materials mixing with minor crustal materials.Based on the geochemical char-acteristics and typical deposit characteristics of this area,the Erdaokan Ag-Pb-Zn deposit is considered to be an epithermal hydrothermal silver deposit,which has been denuded to the middle and shallow part at present,and still has certain prospecting potential in the deep part.关键词
黄铁矿/标型特征/稳定同位素/矿床成因/二道坎银铅锌矿床/黑龙江多宝山地区Key words
pyrite/typomorphic characteristics/stable isotope/genesis of deposit/Erdaokan Ag-Pb-Zn depos-it/Duobaoshan region of Heilongjiang Province分类
天文与地球科学引用本文复制引用
郑博,李成禄,于雷,杨文鹏,徐国战,史冬岩,杨元江,符安宗,赵瑞君..黑龙江二道坎银铅锌矿床黄铁矿标型特征及其S、Pb同位素研究[J].现代地质,2025,39(3):648-666,19.基金项目
黑龙江省重点研发计划项目(GA21A204) （GA21A204）
东北区域创新联合发展基金项目(QCJJ2022-10) （QCJJ2022-10）
黑龙江省地质矿产局科研项目(HKY202301,HKY202302) （HKY202301,HKY202302）
中国地质调查局地质调查项目(DD202300256). （DD202300256）
