地质与资源2025，Vol.34Issue(5)：571-580,10.DOI:10.13686/j.cnki.dzyzy.2025.05.005
辽宁本溪永安超大型铁矿床的发现及矿床特征
Discovery and characteristics of the super-large Yong'an iron deposit in Benxi,Liaoning Province
摘要
Abstract
The Yong'an iron deposit in Liaoning is the southwestward deep extension of Nanfen iron deposit—China's largest open-pit iron mine,and represents a typical Anshan-type iron deposit.The ore bodies occur in stratiform-stratoid forms,with a general NNW strike and a SW dip,comprising three individual iron ore layers designated from bottom to top as Fe1,Fe2,and Fe3.They present an overall dip angle of 40-50°,a controlled length of 2 347.12 m,and an average thickness of 167.64 m,with a thickness variation coefficient of 41.90%.The average grades of ores are 32.03%of TFe and 22.54%of mFe,with grade variation coefficients of 4.13%for TFe and 27.61%for mFe.The ore bodies occur at depth of 665.53-2 168.59 m,with elevation values between-234.35 m and-1 517.36 m.The dominant ore type is magnetite quartzite(magnetite ore),showing relatively uniform grade distribution.During the period of 2021-2025,follow-up exploration utilizing deep drilling confirmed the deposit as a super-large iron deposit.Its discovery not only provides a successful model for deep prospecting in the peripheral areas of existing mines,but also secures sustainable resources for aging mines,thereby contributing significantly to the sustainable development of national economy.关键词
超大型铁矿床/鞍山式铁矿/磁铁石英岩/深部钻探/辽宁省Key words
super-large iron deposit/Anshan-type iron deposit/magnetite quartzite/deep drilling/Liaoning Province分类
天文与地球科学引用本文复制引用
谢忠,刘文彬,彭游博,王雪,刘国昊,田毅,许卫江,谢文然,尹娜,赵军..辽宁本溪永安超大型铁矿床的发现及矿床特征[J].地质与资源,2025,34(5):571-580,10.基金项目
辽宁省自然资源厅省级地质勘查项目"辽宁省本溪市永安铁矿普查(续作)"(JH21-210000-05453). （续作）
