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800~3 200 m,宽5~30 m,走向为NWW向,分析显示Ta2O5品位为0.003 6%~0.021 0%,Nb2O5品位为0.009 4%~0.017 0%,Rb2O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。
Abstract:
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 800~3 200 m, a width of 5~30 m and NWW strike. The grade of Ta2O5 is 0.003 6%~0.021 0%, and the grade of Nb2O5 is 0.009 4%~0.011 0%. Besides, the Rb2O 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.
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