摘要
华北地区已发现有铬铁矿矿床(点)49处,包括中型矿床1处,小型矿床11处,矿(化)点37处,主要分布在内蒙、河北、河南和北京等地。铬铁矿矿床(点)具有成群带分布的特征,主要沿商丹、索伦山、贺根山等几条大的蛇绿岩带集中分布,形成时代从太古代到中生代均有发育,其中新太古-古元古代和晚古生代为两个主要的成矿时期。矿床类型以蛇绿岩型为主,次为岩浆型。综合分析认为,内蒙古二连-贺根山、索伦山、柯单山和商丹等几条大的蛇绿混杂岩带具有较好的铬铁矿找矿潜力,应加强已知矿区外围和深部勘查,有望实现铬铁矿找矿突破。
In recent years,49 chromite deposits(ore occurrences)including 1 medium-sized deposit,11 smallsized deposits and 37 occurrences have been discovered in North China.These chromite deposits(occurrences)are mainly distributed in Inner Mongolia,Hebei,Henan and Beijing provinces,which strictly controlled by Ophiolites and distributed spatially along the ophiolite belts,such as Shangdan,Suolunshan and Hegenshan.They were formed in Archen to Mesozoic,and Neoarchean-Paleoproterozoic and Late Paleozoic were heyday period of chromite mineralization.The ophiolite type is mainly chromite deposit type,followed by magmatic type.The comprehensive analysis shows that several ophiolitic melange belts such as Erlian-Hegenshan,Suolunshan,Kedanshan and Shangdan have good prospecting potential for chromite deposits in Inner Mongolia.Deep exploration and peripheral investigation of known mining areas should be strengthened to achieve a breakthrough in chromite prospecting.
作者
党智财
李俊建
张彤
付超
宋立军
彭翼
方同明
DANG Zhi-cai;LI Jun-jian;ZHANG Tong;FU Chao;SONG Li-jun;PENG Yi;FANG Tong-ming(Tianjin Center of China Geological Survey,Tianjin 300170,China;North China Center for Geoscience Innovation,China Geological Survey,Tianjin 300170,China;Inner Mongolia Bureau of Geological Survey,Hohhot 010020,China;Geological Survey of Hebei Province,Shijiazhuang 050081,China;Geological Survey of Henan Province,Zhengzhou 450007,China;Geological Survey of Beijing Province,Beijing 102206,China)
出处
《华北地质》
2023年第1期27-32,41,共7页
North China Geology
基金
中国地质调查局项目“华北地区区域成矿规律研究与总结(DD20190379-31)
华北地区矿产资源潜力评价(1212011121029)
华北地台成矿规律研究和找矿方向综合研究(200110200038)”
国家重点研发计划深地资源勘查开采重点专项“胶东矿集区三维结构与定位预测课题(2016YFC0600107)和胶东招平带北段金矿深部预测与勘查示范专题(2018YFC0603805-1)”。
关键词
铬铁矿
资源概况
成矿规律
潜力分析
华北地区
chromite deposits
resource characteristics
metallogenetic regularity
analysis of metallogenic potential
North China
