华南地质2025，Vol.41Issue(4)：773-786,14.DOI:10.3969/j.issn.2097-0013.2025.04.008
鄂西北庙垭铌稀土矿床三维地质建模与深部地质特征
3D Geological Modeling and Deep Geological Characteristics of the Miaoya Nb-REE Deposit in Northwestern Hubei
摘要
Abstract
Based on available exploration data,this study utilizes Surpac modeling software to construct a three-dimensional model of the strata,intrusions,faults,and ore bodies in the Miaoya niobium-rare earth(Nb-REE)deposit,northwestern Hubei.The model visually presents the spatial distribution of various geological units and the enrichment patterns of the ore bodies,providing a reference for prospecting predictions in deeper and peripheral areas.The 3D geological model of the Miaoya deposit reveals that:(1)The spatial distribution of the ore bodies is controlled by the contact zone of the complex intrusion and the lithofacies transition zone.High-grade niobium ore bodies occur within syenite and carbonate rocks,while rare earth mineralization is primarily enriched in syenite.The rare earth ore bodies are smaller in scale than the niobium ore bodies and are distributed from the middle to the bottom of the large niobium ore bodies,exhibiting a spatially coupled relationship.(2)High-grade values of Nb2O5 are found between exploration lines 16 and 18,in the eastern section of the F1 and F2 fault zones at a shallow depth of approximately 650 m,and at the lower boundary of the faults.High-grade values of TR2O3 are spatially closer to the F2 fault and near the surface,with the occurrence of the ore body similar to that of the F2 fault,indicating a significant mineralization controlling effect of the F2.(3)High-grade niobium mineralization is observed below the final depth of borehole ZK14 and in the western part of the mining area,suggesting the presence of concealed ore bodies at depth and indicating promising prospecting potential.关键词
铌稀土矿床/Surpac/三维地质建模/庙垭/鄂西北Key words
Nb-REE deposit/Surpac/3D geological modeling/Miaoya/Northwest Hubei分类
天文与地球科学引用本文复制引用
张雨欣,李剑锋,黄啸坤,于玉帅,崔培龙,何洪涛..鄂西北庙垭铌稀土矿床三维地质建模与深部地质特征[J].华南地质,2025,41(4):773-786,14.基金项目
中国地质调查局地质调查项目(DD202402022)、国家科技重大专项(2025ZD1009108) （DD202402022）
