安徽省桃冲铁矿地质特征、控矿因素及找矿方向

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英文篇名：Geological characteristics,ore-controlling factors and prospecting orientation of the Taochong iron deposit in Anhui province 作者：方福康 ; 杜杨松 ; 曹毅 英文作者：FANG Fukang1 ; 2 ; DU Yangsong1 ; CAO Yi1(1.State Key Laboratory of Geological Process and Mineral Resources ; China University of Geosciences ; Beijing 100083 ; China ; 2.Chinacoal Geology Engineering Corporation ; Beijing 100073 ; China) 关键词：桃冲铁矿 ; 地质特征 ; 控矿因素 ; 找矿方向 ; 夕卡岩型铁矿床 ; 安徽省 英文关键词：Taochong iron deposit ; geological characteristics ; ore-controlling factor ; prospecting orientation ; skarn-type iron ore ; Anhui 刊名：地质找矿论丛 英文刊名：Contributions to Geology and Mineral Resources Research 出版日期：2013-06-15 出版单位：地质找矿论丛 机构：中国地质大学(北京)地质过程与矿产资源国家重点实验室;中国煤炭地质总局特种技术勘探中心; 年：2013 期：02 基金：全国危机矿山接替资源找矿项目“长江中下游地区夕卡岩型矿床成矿规律总结及机制研究项目”(编号 ; 200089938) ; 基金：教育部科学技术研究重点项目(编号 ; 308006)资助 CN：12-1131/P ISSN：1001-1412 页：19-26 页数：8 分类号：P618.31 语种：中文; 文件大小：671K

摘要

桃冲铁矿地处长江中下游多金属成矿带铜陵—繁昌铁铜矿区的东北部,为层状夕卡岩型铁矿。目前矿山的铁矿资源储量已所剩不多,在矿区寻找隐伏矿体以延长矿山服务年限已成为当务之急。文章在系统的野外观察和对前人研究资料综合整理的基础上,对桃冲铁矿的矿床地质特征和控矿因素进行了详细分析,并在此基础上探讨了桃冲矿床深部及外围的找矿潜力。分析结果表明,矿体和夕卡岩紧密共生,产于黄龙组灰岩与栖霞组灰岩之间,与地层接触界线截然;桃冲夕卡岩型铁矿是岩浆岩、地层和构造耦合的产物,其中岩浆岩为成矿提供了物源和热源,层间断裂为成矿流体提供了通道,栖霞组富泥质灰岩、五通组砂页岩和次级小褶曲为成矿提供了封闭条件和容矿空间;桃冲矿区和周边区域均具有较好的找矿远景,尤其是在栖霞组与黄龙组之间的层间断裂和S形次级褶曲(翼间角约为90°)共存的地段。
        Located in the northeastern part of the Tongling-Fanchang iron-copper district of the metallogenic belt in the middle–lower reaches of the Yangtze River,East China,Taochong iron deposit is a typical strata-bound skarn iron deposit.The proven reserve in Taochong iron deposit is almost exhausted.Therefore,the exploration of concealed ore bodies in the Taochong area is urgent.Based on a systematic geological investigation and previous data,a detailed study has been carried out on the geological characteristics and ore-controlling factors of the Taochong iron deposit then potential to depth and in surroundings of the deposit is discussed.The result shows that skarns and iron ore bodies are closely associated with each other occurring between the Lower Permian Qixia and Middle Carboniferous Huanglong limestone with sharp contact.Taochong iron deposit is a coupling product of magmatism,strata and structure of which magmatism provided source of ore material and heat,interformation fracture ore fluid channel and argillaceous limestone of Qixia Formation,sandy shale of Wutong Formation and secondary fold the closed ore-hosting space.Taochong iron deposit and the surroundings are both potential for further prospecting,especially the locations where the interlayer gliding fault and the secondary S-shaped folds are coexisted and angle of the rwo wings is about 90°.

引文

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