文章摘要
周润杰,文广,胡浩,廖旺,孙悦,朱金,张小波,程孝增,曲鹏冲,刘晓阳,熊意林,周豹.鄂东南矿集区金牛火山岩盆地南缘富铁矿床地质特征及找矿潜力评价[J].矿产勘查,2026,17(3):481-490
鄂东南矿集区金牛火山岩盆地南缘富铁矿床地质特征及找矿潜力评价
Geological characteristics and prospecting potential of the Fe deposits in the southern margin of Jinniu volcanic basin, Southeastern Hubei Province
投稿时间：2025-11-17  
DOI：10.20008/j.kckc.202603005
中文关键词: 鄂东南矿集区  金牛盆地南缘  富铁矿  岩浆-热液系统  找矿勘查
英文关键词: southeastern Hubei Province  Jinniu Basin  Fe deposit  magmatic hydrothermal system  mineral ex-ploration
基金项目:本文受地球深部探测与矿产资源勘查国家科技重大专项(2024ZD1002203)、湖北省自然科学基金(2025AFB351、2025AFA032、2025AFD430、2023AFB410、2023AFD226)和湖北省地质局项目(KJ2023-60、KCDZ2024-17)联合资助。
作者单位
周润杰 湖北省地质调查院,湖北武汉 430034
资源与生态环境地质湖北省重点实验室,湖北武汉 430034 
文广 中国地质大学武汉,湖北武汉 430073 
胡浩 中国地质大学武汉,湖北武汉 430073 
廖旺 湖北省地质科学研究院,湖北武汉 430074 
孙悦 湖北国土资源职业学院,湖北武汉 430090 
朱金 湖北省地质调查院,湖北武汉 430034
资源与生态环境地质湖北省重点实验室,湖北武汉 430034 
张小波 湖北省地质调查院,湖北武汉 430034
资源与生态环境地质湖北省重点实验室,湖北武汉 430034 
程孝增 湖北省地质调查院,湖北武汉 430034
资源与生态环境地质湖北省重点实验室,湖北武汉 430034 
曲鹏冲 机械工业勘察设计研究院有限公司,陕西西安 710021 
刘晓阳 湖北省地质调查院,湖北武汉 430034
资源与生态环境地质湖北省重点实验室,湖北武汉 430034 
熊意林 湖北省地质调查院,湖北武汉 430034
资源与生态环境地质湖北省重点实验室,湖北武汉 430034 
周豹 湖北省地质调查院,湖北武汉 430034
资源与生态环境地质湖北省重点实验室,湖北武汉 430034 
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中文摘要:
      金牛火山岩盆地位于鄂东南矿集区西缘，是中国长江中下游铁矿床的重要分布区。盆地南缘灵乡一带的脑窖、刘岱山等富铁矿体主要赋存于闪长岩与三叠系碳酸盐岩接触带及火山岩中，呈透镜状、脉状及不对称马鞍状，矿石多具块状、角砾状与网脉状构造。金牛盆地南缘发育大量硬石膏，其硫同位素 δ3.S集中于 +30‰～+32‰。盆地南缘石膏资源量超过 1亿 t，而铁矿资源量不足 2000万 t，资源量比值严重失衡，暗示深部可能存在尚未揭露的厚大铁矿体。重力-磁力异常叠加区钻探揭露白云质灰岩捕虏体及厚大高品位硬石膏层，表明其具备有利成矿条件。本研究表明金牛盆地南缘具有形成大中型富铁矿床的潜力，深部构造交汇带是下一步重点找矿方向。
英文摘要:
      The Jinniu volcanic basin, located in the western margin of the Southeastern Hubei Province. Sev-eral Fe deposits, including the Naojiao and Liudaishan deposits, occur along the southern margin of the basin, whereore bodies are mainly hosted in the contact zones between diorite and Triassic carbonate rocks. The ore bodies arecharacterized by complex morphologies such as lenticular, vein-like, and asymmetrical saddle shapes, with massive,brecciated, and stockwork textures. Large amounts of anhydrite occur in the southern Jinniu basin, with sulfur iso-tope compositions (δ3.S = +30‰ to +32‰) indicating a distinct evaporitic sulfur source. Notably, the anhydrite re-sources in this area exceed 100 million tons, whereas the identified Fe resources are less than 20 million tons, pro-ducing a highly unbalanced ratio that implies the likely presence of undiscovered, thick iron orebodies at depth.Drilling within overlapping gravity and magnetic anomalies has revealed extensive dolomitic limestone xenolith bod-ies and thick, high-grade anhydrite layers, further confirming favorable metallogenic conditions. The results of thisstudy demonstrate that the southern margin of the Jinniu basin has significant potential for medium-to large-scalehigh-grade iron deposits, and that deep structural intersections constitute the primary targets for future exploration.
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