福建大田某铁矿床地质特征及成因  

Geological characteristics and genesis of an iron ore deposit in Datian County,Fujian Province

作　　者：邱占林[1] 吴超凡[1] 郭新强[2] 王磊[3] 陈万煌 黄聪明[1] QIU Zhanlin WU Chaofan GUO Xinqiang WANG Lei CHEN Wanhuang HUANG Congming(School of Resource Engineering, Lor~gyan University, Longyan 364012, China The 197 Geological Team of Fujian Province, Quanzhou 362011, China The 121 Geological Team of Fujian Province, Longyan 364021, China)

机构地区：[1]龙岩学院资源工程学院,福建龙岩364012 [2]福建省197地质大队,福建泉州362011 [3]福建省121地质大队,福建龙岩364021

出　　处：《矿业工程研究》2016年第4期47-53,共7页Mineral Engineering Research

基　　金：2016年国家级大学生创新创业训练计划资助项目(201611312021);福建省教育厅JK类科技项目(JK2014050);福建省大学生创新创业训练计划资助项目(S20141036);龙岩学院校级重点学科资助项目

摘　　要：金属矿床地质特征及成因的研究程度事关地质找矿成效的关键性问题.在简述区域地质特征的基础上,分析了福建大田某铁矿床地质特征,并从成矿物源、岩性、层位、构造、岩浆岩及岩体后期蚀变作用与矿化关系等方面入手对其成因进行了研究.结果表明:该铁矿床矿体赋存于林地组与栖霞组之间的不整合面上的灰岩层位中,燕山早期的张地岩体是铁矿矽卡岩化的必要条件,其接触带附近的蚀变带是矿化及矿体赋存的必然条件.矿石类型主要为风化残余型褐铁矿,属热液充填型与接触交代型矿床.该研究可为矿区及外围进一步找矿工作提供指导及技术参考.The key issues of the effectiveness of the geological prospecting results are dependent on the research degree of geological characteristics and genesis of metal ore deposits. On the basis of brief regional geological characteristics, the analysis of the geological characteristics of a iron ore deposit in Datian County, Fujian Province, and the metallogenic causes are studied from a mineral source, lithology, strata, structure, magmatic rocks and late rock alteration and mineralization relations and other aspects. Results show that the iron orebody occur in the limestone layer of the unconformity between Lindi and Qixia Formation on the surface of the bit. Zhangdi rock mass of the early Yanshan is necessary for iron ore skarnized, and near the contact zone of the alteration belt are the necessary conditions of mineralization and orebody occurrence. The ore types are mainly weathering residual type limonite, belonging to hydrothermal filling type and contact metasomatic deposits. This study can provide guidance and technical reference for the further prospecting work in the mining area and the periphery.

关 键 词：铁矿床 地质特征 成因 张地岩体 

分 类 号：P618.31[天文地球—矿床学]