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印度-亚洲大陆在65 Ma开始对接与碰撞,滇西地区是重要的构造转换带,发生大规模的右旋剪切及滑脱,出现了一系列构造岩浆活动、变质作用及成矿响应。其中怒江构造带伟晶岩脉广泛发育,是滇西地区重要的稀有金属及宝玉石找矿远景区。目前对该区的伟晶岩型矿床研究程度较低,仅有极少文章对产出状况进行过初步介绍(如:唐建云,2009),本文拟对典型矿床贡山丹珠伟晶岩型铍铌钽矿微量元素地球化学特征及流体包裹体特征方面的初步研究进行报道。
The Indo-Asian continent started docking and collisions at 65 Ma, and the western Yunnan is an important tectonic transformation zone. Large-scale dextral shear and slippage occurred. A series of tectonic magmatism, metamorphism and metallogenic response occurred. Among them, the Nujiang tectonic belt has extensive development of pegmatite veins and is an important prospecting area for rare metals and gemstones in western Yunnan. At present, the degree of research on pegmatite deposits in this area is relatively low, and there are only a few articles on the initial state of output (for example, Tang Jianyun, 2009). In this paper, The trace element geochemical characteristics of niobium and tantalum ore and the characteristics of fluid inclusions are reported.