摘要
边墙里矿区位于内蒙-大兴安岭褶皱系华力西优地槽褶皱带东部,处于内蒙古浩布高-敖脑大坝铜、铅、锌成矿带上,是寻找构造蚀变岩型银多金属矿以及矽卡岩型铜铅锌多金属矿的有利地区,尤其是NW向和NE向断裂构造发育区,为成矿有利区段。该矿带现已发现双尖子山超大型热液型矿床、浩布高矽卡岩型铜多金属矿等多个大中型矿床。为进一步查清成矿带的成矿地质条件和成矿规律,在1∶5万区域矿产地质调查的基础上,选择边墙里矿区进行矿产勘查工作,相继开展了1∶1万地质草测、1∶1万电法测量、1∶2.5万土壤测量和槽探工程控制。对矿区取得的地质勘查资料进行了综合研究,结果表明:①矿区内圈出了8条矿化带,矿化带主要位于构造蚀变带上,长度为20~550 m,出露宽度为0.6~8.0 m,与矿化有关的主要蚀变有硅化、方铅矿化、闪锌矿化、黄铜矿化等;②矿区共圈定了4条矿体,其中,2条铅矿体,1条银铅矿体,1条银铜铅锌多金属矿体,矿床类型为构造热液型矿床,矿体多呈脉状、透镜状、带状等;③矿化带严格受控于地质构造,多呈NW、NE向带状、脉状展布,次级韧性-韧脆性构造带是控矿和储矿的有利部位;④矿区内圈出了10处土壤化探综合异常和5处激电异常,二者异常套合好,峰值明显,8条矿化蚀变带和4条矿体均分布于物化探异常内。在上述分析的基础上,根据矿床地质特征及物化探异常特征,构建了综合找矿模型,并据此在矿区内圈定了3处找矿靶区(编号为B1,B2和B3),其中,B2区为矿区最有潜力的找矿靶区,进一步工作有望圈出有开采价值的矿体;根据地表探矿工作成果,预测矿区内远景银铜铅锌(334)资源量达到中型以上。
Bianqiangli mining area is located in the eastern of Variscan eugeosyncline fold belt of Inner Mongolia-Great Khingan fold system,it is distributed in Haobugao-Aonaodaba Cu-Pb-Zn metallogenic belt in Inner Mongolia,especially for the NW-oriented and NE-oriented fault tectonic development zones are favorable for mineralization.A number of large and medium-sized mineral deposits such as Shuangjianzishan super-large hydrothermal deposit and Haobugao skarn type copper polymetallic deposit have been found in the metallogenic belt.In order to further study the metallogenic geological conditions and metallogenic regularity of the metallogenic belt,based on the 1∶50 000 regional geological survey,Bianqiangli mining area is selected to conduct geological work,to be specific,1∶10 000 geological sketch survey,1∶10 000 electrical measurement,1∶25 000 soil profile measurement and trough engineering are conducted in the area.The geological survey data obtained from the mining area are studied comprehensively,the results show that:①eight mineralization belts are delineated in the mining area,they are located at the structural alteration zone,ranging from 20 m to 550 m in length,the width is 0.6~8.0 m,the alteration types related to mineralization are mainly for silicification,galena mineralization,sphalerite mineralization and brass mineralization;②four orebodies are delineated,among them,two lead orebodies,one Ag-Pb orebody,one Ag-Cu-PbZn orebody,deposit genesis belongs to tectonic hydrothermal type deposit,the orebodies are distributed with the shapes of vein,lenticular,ribbon,etc.;③the mineralized zone is strictly controlled by geological structures,they are distributed with the shapes of ribbon and vein in NW and NE direction,the secondary toughness-ductile brittle structure zone are favorable positions for ore controlling and storage;④ten soil geochemical geochemical anomalies and five IP anomalies are delineated in the mining area,the two kinds of anomalies are matched with each other,eight mineralized zon
作者
李进喜
方怀宾
曹宇岗
黄正将
程远秋
赵德鑫
高强
Li Jinxi;Fang Huaibin;Cao Yugang;Huang Zhengjiang;Cheng Yuanqiu;Zhao Dexin;Gao Qiang(The First Geological Exploration Institute of Henan Province Bureau of Geo-explorationand Mineral Development,Zhengzhou 450001,China;Henan Institute of Geological Survey,Zhengzhou 450001,China)
出处
《金属矿山》
CAS
北大核心
2019年第9期132-140,共9页
Metal Mine
基金
内蒙古地质勘查基金项目(编号:13-4-KC34)
关键词
银铜铅锌矿床
地质特征
找矿标志
成矿规律
综合找矿模型
找矿靶区
Ag-Cu-Pb-Zn deposit
Geological characteristics
Prospecting indicator
Metallogenic regularity
Integrated prospecting model
Prospecting target area
