摘要
新乌苏矿区位于华北板块北部大陆边缘,宝音图—锡林浩特火山型被动陆缘,查干此老—巴音杭盖金成矿带(Ⅳ74)上,是寻找与燕山期酸性岩浆活动有关的热液型铜铁矿的有利地区,尤其是NEE向大断裂的次级构造石英脉的下部为成矿有利区段。该矿带相继发现了巴音杭盖、图古日格、查干次老金矿和东加干铁矿。为详细查明矿床资源储量与矿体地质特征,类比毗邻的常兴铁矿及扎嘎乌素铁矿矿床地质特征及成矿理论,在总结分析前人普查、详查成果资料的基础上,通过1∶2000地质测量、矿产地质钻探,对矿区地质特征进行了综合研究。结果表明:(1)矿区主要出露下元古界宝音图群的白云岩、千枚岩、碳质板岩、石英岩,志留系徐尼乌苏组地层出露于矿区东南部,第四系大面积覆盖于勘探区内,岩浆岩不发育;(2)矿体赋存于早古生界志留系徐尼乌苏组中,共圈定了14条矿体,其中铜铁矿体4条,铁矿体10条(7条为露头矿,其余均为隐伏矿体),矿床成因类型为热液型铜铁矿;(3)矿体受控于NEE向地质构造,多呈EW、NEE向带状或脉状展布,大断裂的次级构造带是控矿和储矿的有利部位。根据对新乌苏铜铁矿床地质特征的综合分析,构建了矿区综合找矿模型,并圈定了3处找矿靶区(编号为B1、B2、B3)。矿体主要受构造控制,大断裂在矿区内长2.2 km,矿体沿走向和倾向上应具有一定规模的延深,矿区具有很好的找矿前景。
The Xinwusu Mining Area is located on the northern continental margin of the North China Plate,the passive continental margin of Baoyintu-Xilinhot volcanic type and Chagancilao-Bayinhangai gold metallogenic belt(Ⅳ74),it is a favorable area to search for hydrothermal Cu-Fe ore related to the acidic magmatic activity of Yanshanian epoch,especially,the lower part of the secondary tectonic quartz veins of NEE trending large fault is favorable for mineralization.Bayinhanggai,Tugurige,Chagancilao Gold Mine and Dongkagan Iron Mine have been successively discovered in the ore belt.In order to determine resource reserves of the deposit and the geological characteristics of the ore body in detail,the geological characteristics and metallogenic theory of the adjacent Changxing Iron Deposit and Zagawusu Iron Deposit were compared.On the basis of summarizing and analyzing the existing achievements of general survey and detailed investigation,through 1∶2000 geological surveys,mineral geological drilling,the geological characteristics of the mining area was studied comprehensively.The results showed that:(1)The mining area mainly exposes the dolomite,phyllite,carbonaceous slate and quartzite of Baoyintu Group of Lower Proterozoic,Silurian Xuniwusu Formation strata are exposed in the southeast of the mining area,Quaternary strata covers a large area in the exploration area and the magmatic rocks are not developed;(2)Orebodies are distributed in the Early Paleozoic Silurian Xuniwusu Formation,a total of 14 orebodies were delineated,including 4 Cu-Fe orebodies and 10 iron orebodies(7 are outcrop ores,others are concealed orebodieds),the genetic type of the deposit is hydrothermal copper-iron ore;(3)The ore body is controlled by NEE-oriented geological structures,and most of them are distributed in EW and NEE-oriented belts or veins,the secondary structural belts with large faults are favorable locations for ore-controlling and storage.According to the comprehensive analysis of Xinwusu Cu-Fe Deposit,the integrated prospecting m
作者
丁心科
王振臣
张彦生
陈杰
朱敏
童家琨
DING Xinke;WANG Zhenchen;ZHANG Yansheng;CHEN Jie;ZHU Min;TONG Jiakun(Zhejiang Jiuhe Geological Ecological Environment Planning and Design Co.,Ltd.,Huzhou 313000,China;Geological Disaster Prevention and Ecological Environment Restoration Technology Research(Innovation)Center,Huzhou 313000,China;Comprehensive Survey Team of Inner Mongolia Nonferrous Geological Survey,Hohhot 010010,China;108 Team of Inner Mongolia Nonferrous Geological Survey Bureau,Chifeng 024000,China)
出处
《金属矿山》
CAS
北大核心
2021年第5期130-139,共10页
Metal Mine
关键词
铜铁矿床
矿床地质特征
综合找矿模型
找矿标志
找矿靶区
Cu-Fe deposit
geological characteristics of deposit
integrated prospecting model
prospecting sign
prospecting target area
