地质与资源2025，Vol.34Issue(5)：630-639,10.DOI:10.13686/j.cnki.dzyzy.2025.05.011
辽宁凤城赛马异性石霓霞正长岩中铌钽锆矿化新类型
New type of niobium-tantalum-zirconium mineralization of the Saima eudialyte nepheline syenite in Fengcheng area,Liaoning Province
摘要
Abstract
The Saima alkaline rock mass,located within the Neoproterozoic-Paleozoic depression zone in eastern Liaoning,intruded into the core of brachyanticline formed by the Paleoproterozoic,Neoproterozoic and Paleozoic strata during the Triassic,and was then overlain by the Jurassic strata.Previous studies identified the Saima deposit within the Saima alkaline rock mass as the most typical alkaline rock-type U-Th-Nb-REE deposit in China.In recent years,medium-large scale Nb-Zr deposits have been discovered around Saima deposit,with the ore-bearing rock of eudialyte nepheline syenite of residual magma phase,representing a newly identified ore type.The eudialyte nepheline syenites are primarily occurred as concealed stocks in Saima-Beitaiyanggou-Zhuanshanzi area,also outcropped in Beitaiyanggou and Nantaiyanggou,exhibiting the characteristics of whole-rock Nb mineralization.The niobium ore bodies hosted in the eudialyte nepheline syenite appear as stratoid and lenticular formations,generally exhibiting a nearly horizontal and gently dipping attitude.The discovery of this new type of Nb-Zr deposit is a significant breakthrough in the rare metal-rare earth exploration in Saima area,not only enriching the mineralization types and enhancing its resource potential,but also indicating a new direction for the exploration of alkaline rock-type rare metal-rare earth deposits in the area.关键词
稀有金属/稀土/铌锆矿/碱性岩/异性石霓霞正长岩/辽宁省Key words
rare metal/rare earth element/niobium-zirconium deposit/alkaline rock/eudialyte nepheline syenite/Liaoning Province分类
天文与地球科学引用本文复制引用
邢兴庆,杨福鹏,南哲,刘显成,孙冉,于波涛,辛江,王杨,刘洋,李元利..辽宁凤城赛马异性石霓霞正长岩中铌钽锆矿化新类型[J].地质与资源,2025,34(5):630-639,10.基金项目
辽宁省地质勘查基金项目"辽宁省凤城市赛马地区稀有稀土矿普查"(辽自然资项[2021]28号) （辽自然资项[2021]28号）
"辽宁省凤城市赛马地区稀有稀土矿普查(续作)"(辽自然资项[2023]44号). （续作）
