河北宣龙铁矿地质特征及开采问题  

Geological characteristics and mining problems of Xuanlong iron ore deposit in Hebei province

作　　者：刘典波[1] 石成龙[1] 李利阳[2] 赵禹[1] 张传恒[1] 

机构地区：[1]中国地质大学(北京)地球科学与资源学院,北京100083 [2]武警黄金第四支队,辽宁辽阳111000

出　　处：《中国矿业》2016年第12期94-97,共4页China Mining Magazine

摘　　要：河北宣龙铁矿是我国重要的沉积型铁矿,了解其地质特征能够给铁矿开采中存在的问题提供参考处理意见。本文对宣龙铁矿成矿时区域地质背景、含矿层位和成矿地质年代、全球环境进行研究,并结合对鲕状赤铁矿和叠层石赤铁矿结构特征、地球化学特征和沉积环境的分析,可知宣龙铁矿形成于障壁海岸环境中的障壁岛临滨环境,深海中的Fe2+在铁细菌和蓝细菌共同作用下在宣化-龙关一带富集成矿。宣龙铁矿的地质特征与铁矿开采过程中采矿点分散、开采经济效益低、铁矿回采率低和环境保护等问题关系密切。The Xuanlong iron ore deposit in Hebei Province is a very important sedimentary iron ore in China.Knowing it＇s geological characteristics can provide solutions for mining problems.This article analyze its geological background,the iron layers in Chuanlinggou Formation and its geological age,and consider of the structure of ooid hematite and stromatolite hematite,geochemistry,their sedimentary settings.It demonstrated that the Xuanlong iron ore deposited in the shoreface of barrier island condition.Xuanlong iron ore should be related to the iron bacteria and blue bacteria,the Fe^（2＋） came from the deep sea.There is a closed relationship between the mining problems and the geological characteristics of the iron ore deposit.The mining problems include mining point dispersion,low economic benefits,low rate of percentage recovery iron resources and poor environmental protection.

关 键 词：宣龙铁矿 中元古代 地质特征 开采问题 

分 类 号：P595[天文地球—地球化学] TD353[天文地球—地质学]