基于大数据的铌钽矿物全球时空分布特征分析  

Global temporospatial distribution patterns of Nb/Ta-bearing minerals based on big data analytics

作　　者：宋颜 董少春[1] 胡欢 王汝成[1,2] SONG Yan;DONG Shaochun;HU Huan;WANG Rucheng(School of Earth Sciences and Engineering,Nanjing University,Nanjing 210023,China;State Key Laboratory for Mineral Deposits Research,Nanjing University,Nanjing 210023,China)

机构地区：[1]南京大学地球科学与工程学院,江苏南京210023 [2]南京大学内生金属矿床成矿机制研究国家重点实验室,江苏南京210023

出　　处：《地学前缘》2023年第5期197-204,共8页Earth Science Frontiers

基　　金：国家自然科学基金重点项目(42230809)。

摘　　要：铌钽是发展电子、航空、医疗、机械、原子等新型产业的关键性稀有金属,随着我国对铌钽资源的需求持续性增长,增大铌钽矿产出是当务之急,因而开展铌钽成矿机制和富集规律的研究尤为重要。前人对铀、汞、铍、硼、锂等矿物多样性和时空分布特征的研究表明,基于大数据的矿物演化研究能够为矿物的富集和成矿机制提供新的思路,为找矿预测提供新的方向。本文从全球矿物综合数据库(RRUFF)中获取了全球含铌钽矿物的大数据,对全球含铌钽矿物的种类(179种)、数量(1 488个)以及地理空间分布在地质历史时期变化的特征和规律进行了分析。研究结果表明,含铌钽矿物的种类和数量随着地球演化过程不断累积增长,且增长具有明显的阶段性,在基诺兰超大陆聚合期、潘基亚超大陆聚合期和潘基亚超大陆裂解期均存在明显的增长高峰。铌钽矿物演化的重要时期与超大陆形成、裂解的时间具有良好的耦合性,暗示了铌钽金属的富集与超大陆旋回存在内在的联系,这种内在联系还需要进一步挖掘。Niobium and tantalum are critical rare metals for the emerging industries including electronics,aviation,healthcare,mechanical engineering,and nuclear.With increasing demand for Nb-Ta deposits it is imperative to study their ore-forming mechanism and Nb/Ta enrichment patterns.According to previous studies on the mineral diversity and temporospatial distribution of U,Hg,Be,B,Li-bearing minerals,big data-based mineral evolution research can provide new insights into rare-metal enrichment and ore-forming mechanisms as well as new directions for ore prediction.In this paper,global Nb/Ta-bearing mineral big data involving 1488 minerals and 179 mineral species are obtained from the Global Comprehensive Mineral Database(RRUFF),and historical changes in mineral species and quantity and geospatial distribution of Nb/Ta-bearing minerals are analyzed.During Earth’s evolution mineral species and quantity of Nb-Ta-bearing minerals have increased continuously,and the growth appears to be multi-stage.Prominent growth peaks coincide with the convergence of the Kenorland and Pangea supercontinents and breakup of the Pangea supercontinent,indicating there is an inner relationship between Nb-Ta enrichment and the supercontinent cycle-such inner relationship needs to be further explored.

关 键 词：矿物演化 含铌钽矿物大数据 时空分布特征 超大陆旋回 

分 类 号：P57[天文地球—矿物学]