华东地质2026，Vol.47Issue(3)：499-519,21.DOI:10.16788/j.hddz.32-1865/P.2025.05.001
大兴安岭洛古河地区水系沉积物地球化学特征及找矿远景分析
Geochemical characteristics of stream sediments and prospecting potential analysis in the Luoguhe region of the Great Xing'an Range
摘要
Abstract
The Luoguhe region is located in the northern of the Great Xing'an Range.Gold deposits such as Shabaosi and Sanshierzhan,as well as the Luoguhe lead-zinc polymetallic deposit,have been discovered in and around the area,that making it a favorable region for the formation of multi-metal deposits such as gold,copper,with good prospecting potential.To further tap into the prospecting potential of the Luoguhe region,based on the results of 1∶50 000 stream sediment survey,we studied geochemical characteristics of 20 elements including Au,Ag,and Cu in the Luoguhe region.Through analyzing elemental geochemical parameters,characteristics of distri-bution and elemental association,it was found that the geochemical conditions for mineralization of Au,Ag,Cd,Ni and Sn are relatively favorable,with Au being the main ore-forming element.The distribution areas of the Mo-he Formation,Xiufeng Formation,and Jiageda Formation are the most favorable for mineralization.Based on the delineation of single-element anomalies,combined with characteristics of elemental association and anomaly,as well as the geological conditions of the anomalies,we delineated a total of 11 comprehensive anomalies,and iden-tified 4 mineralization prospects.The geological and mineralization conditions within each prospect area are sum-marized and the anomalies are verified.Combined with the analysis of regional mineralization geological back-ground,it is indicated that the study area has the potential to form low-to-moderate temperature hydrothermal gold and polymetallic deposits,providing important basis for further prospecting in the area.关键词
水系沉积物测量/地球化学特征/找矿远景/大兴安岭北部/洛古河地区Key words
stream sediment survey/geochemical characteristics/ore-searching prospects/northern Great Xing'an Range/the Luoguhe region分类
天文与地球科学引用本文复制引用
孙彦峰,齐宏运,周传芳,于雷,杨华本,魏小勇,马中雨,贾立明,张璇璞,牛广元..大兴安岭洛古河地区水系沉积物地球化学特征及找矿远景分析[J].华东地质,2026,47(3):499-519,21.基金项目
中国地质调查局"黑龙江省牡丹江—鸡西地区湖水等8幅1∶5万区域地质调查(编号:DD202601103101)""黑龙江大兴安岭洛古河(N51E016007)、兴华沟林场(N51E017007)、阿凌河(N51E018007)、1072.3高地幅(N51E019007)1∶5万区域地质矿产调查(编号:DD2016007803)"和"小兴安岭黑河地区自然资源综合调查(编号:DD20230504)"项目联合资助. （编号:DD202601103101）
