藏南喜马拉雅淡色花岗岩稀有金属成矿作用初步研究

发布时间：2018-06-05 10:38

本文选题：淡色花岗岩 + 绿柱石　；参考：《中国科学:地球科学》2017年08期

【摘要】：喜马拉雅淡色花岗岩是青藏高原广泛分布且独具特色的地质组成,呈东西向分布,延绵超过1000km.它们可划分为黑云母花岗岩、二云母/白云母花岗岩、电气石花岗岩和石榴石花岗岩,此外,发育程度不等的钠长石花岗岩和花岗伟晶岩.本文介绍了对喜马拉雅淡色花岗岩稀有金属成矿的初步研究结果.在本次调查的15个淡色花岗岩体岩体中,有12个岩体中发现了稀有金属矿物,包括代表铍成矿的绿柱石,代表铌钽成矿的铌铁矿族矿物、重钽铁矿、烧绿石-细晶石、褐钇铌矿、铌铁金红石,代表锡成矿的锡石等.初步研究表明,喜马拉雅淡色花岗岩的稀有金属成矿范围广,具有良好的稀有金属成矿潜力,可成为中国重要的稀有金属成矿带,未来需要尽快加强该地区的稀有金属成矿调查和研究工作,为中国稀有金属矿产资源接替基地的找寻提供理论依据.
[Abstract]:Himalayan pale granite is a widely distributed and unique geological composition of Qinghai-Xizang Plateau, with an east-west distribution extending over 1000 km. They can be divided into biotite granite, dimica / Muscovite granite, tourmaline granite and garnet granite, in addition, albite granites and granitic pegmatites of varying degrees of development. This paper introduces the preliminary research results of rare metal metallogeny of Himalayan pale granite. Of the 15 pinkish granite bodies investigated, 12 have found rare metal minerals, including Beryl representing beryllium mineralization, niobite group minerals representing niobium-tantalum mineralization, heavy tantalite, pyrochlore and fine-grained ore. Brown yttrium niobium ore, ferroniobium rutile, cassiterite, etc. The preliminary study shows that the Himalayan pale granites have a wide range of rare metal mineralization and have good metallogenic potential, which can become an important metallogenic belt of rare metals in China. In the future, it is necessary to strengthen the investigation and research of rare metal mineralization in this area as soon as possible, so as to provide a theoretical basis for finding a replacement base for rare metal mineral resources in China.
【作者单位】：南京大学内生金属矿床成矿机制研究国家重点实验室南京大学地球科学与工程学院;中国科学院地质与地球物理研究所岩石圈演化国家重点实验室;
【基金】：国家自然科学基金项目(批准号:41230315和41130313) 中央高校基本科研业务费专项资金项目(编号:020614380057)资助
【分类号】：P618.6

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