内蒙古北山地区微波山稀有金属矿化带的特征及意义  

Characteristics and implication of Weiboshan rare metal mineralization belt in Beishan area of Inner Mongolia

作　　者：胡二红 康建飞 胡宇超 孙浩 厚勇 苏斌 HU Erhong;KANG Jianfei;HU Yuchao;SUN Hao;HOU Yong;SU Bin(Inner Mongolia No.8 Geological and Mineral Exploration and Development Co.,Ltd.,Inner Mongolia Wuhai 016000,China;School of Earth Science and Resources,China University of Geosciences(Beijing),Beijing 100083,China;Inner Mongolia Yunfan Geological Environment Technology Service Co.,Ltd.,Inner Mongolia Wuhai 016000,China)

机构地区：[1]内蒙古第八地质矿产勘查开发有限责任公司,内蒙古乌海016000 [2]中国地质大学(北京)地球科学与资源学院,北京100083 [3]内蒙古云帆地质环境技术服务有限责任公司,内蒙古乌海016000

出　　处：《中国地质调查》2023年第6期13-24,共12页Geological Survey of China

基　　金：内蒙古自治区地质勘查基金“内蒙古自治区额济纳旗平台山等二幅1∶5万区域矿产地质调查(编号:NMKD2016-06)”和“内蒙古自治区额济纳旗微波山稀有稀土多金属矿普查(编号:20-1-KC01)”项目联合资助。

摘　　要：稀有金属是我国重要的战略性矿产资源,在国民经济建设和国防科技等领域具有广泛的应用空间。近年来,通过地质调查、高精度磁法及土壤地球化学测量等综合找矿方法,在内蒙古北山地区的微波山稀有多金属矿区新发现了3条规模较大的铷铌钽矿化带。对微波山铷铌钽矿化带的地质特征及成因进行了初步分析,结合实地勘查,认为矿化带主要分布于钠长石-白云母花岗伟晶岩脉群内,矿化带长800~3200 m,宽5~30 m,走向为NWW向,分析显示Ta 2O 5品位为0.0036%~0.0210%,Nb 2O 5品位为0.0094%~0.0170%,Rb 2O品位为0.046%~0.210%,具有中大型成矿远景特征。微波山稀有金属矿化带是在内蒙古北山地区首次发现的花岗伟晶岩型稀有金属矿化带,勘探工作指示北山成矿带具有良好的稀有金属资源潜力,对区域找矿具有指导意义,应加强系统勘查和进一步的研究工作。Rare metal is important strategic mineral resource in China,and it has a wide application space in the fields of national economic construction,national defense science and technology.In recent years,three large-scale Rb-Nb-Ta rare metal mineralization belts have been newly discovered in Beishan Weiboshan rare metal mineralization belt zone in Beishan area of Inner Mongolia through geological survey,high-precision ground magnetic survey and soil geochemical survey methods.On the basis of preliminary investigation on geological characteristics and genesis of Weiboshan tantalum niobium rubidium mineralization belt,the researchers in this paper identified that the mineralization belts were in the albite and muscovite granite pegmatite vein group,with a length of 800~3200 m,a width of 5~30 m and NWW strike.The grade of Ta 2O 5 is 0.0036%~0.0210%,and the grade of Nb 2O 5 is 0.0094%~0.0110%.Besides,the Rb 2O grade is 0.046%~0.210%,indicating a medium-large metallogenic prospect.Weiboshan rare metal mineralization belt is the first discovered rare metal mineralization belt of granite pegmatite type in Beishan area of Inner Mongolia,and the prospecting work shows that Beishan mineralization belt has good rare metal resource potential,which has guiding significance for regional prospecting.And the systematic exploration and further research should be strengthened.

关 键 词：花岗伟晶岩 稀有金属矿化带 微波山地区 北山地区 

分 类 号：P618.6[天文地球—矿床学]