新疆阿尔泰别也萨麻斯Li-Nb-Ta矿床成矿机制研究：来自年代学、流体包裹体和Li同位素的约束

Granitic pegmatitic Li deposits is an important source of Li resources. Different from most other rare metal deposits in Xinjiang Altay, the distinctive and representative Bieyesamasi Li-Nb-Ta deposit is not only distributed in North Altay but also characterized by relatively simple and Li-dominated mineralization. This project chooses Bieyesamasi as the research object, based on the systematic geological investigation, the geochronology, fluid inclusion, and Li isotopes were studied in response to the problems of the research of domestic and international granite pegmatite type Li deposits, with the aims to determine the mineralization age, clarify the relationship between mineralization and surrounding granites, discuss the nature and evolution of fluids, and the process of Li enrichment. These studies are helpful to summarize the ore-forming mechanism and establish a genetic model of the deposit. This project is meaningful to the further prospecting of the deposit and has important strategic significance on the exploration of granite pegmatite type Li deposits in Altay and even entire China.

花岗伟晶岩型Li矿是Li矿资源的重要来源。新疆阿尔泰别也萨麻斯Li-Nb-Ta矿床是目前发现的既分布在北阿尔泰又以Li矿化为主、矿化类型相对简单的稀有金属矿床，区别于阿尔泰其他绝大部分稀有金属矿床，具有独特性和代表性。申请书选择别也萨麻斯为研究对象，针对国内外花岗伟晶岩型Li矿研究中存在的问题，拟在系统的野外地质调查基础上，开展年代学、流体包裹体和Li同位素研究，厘定成矿时代，明确矿化与围岩花岗岩的关系，探讨流体的性质、演化及Li富集沉淀的过程，总结成矿规律，建立矿床模型，以期有助于进一步的找矿勘查工作，拓宽新疆阿尔泰乃至我国花岗伟晶岩型Li矿的找矿思路。