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首页> 外文期刊>Journal of Asian earth sciences >A comparison of global rare earth element (REE) resources and their mineralogy with REE prospects in Sri Lanka
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A comparison of global rare earth element (REE) resources and their mineralogy with REE prospects in Sri Lanka

机译：全球稀土元素（REE）资源及其在斯里兰卡的REE前景中的矿物质的比较

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Rare earth elements (REEs), a group of 17 elements comprises 15 lanthanides, scandium and yttrium, are largely attracting the world's attention due to their importance in a wide variety of advanced technological applications. Global REEs production is mainly sourced from resources, such as carbonatites, alkaline igneous rocks, placers, laterites, and ion-adsorption clays. Recently, REE demand has been escalating, especially due to the REE applications in renewable energy and defense sectors, expecting a worldwide shortage of REE supply in the future. Therefore, REEs have been widely accepted as strategic elements in the world, which compels to prospect for new and alternative REE resources. In this context, Sri Lanka has a favorable geological setting which implies the presence of REE mineralization. Previous geochemical studies in Sri Lanka have reported significant concentrations of REEs in different geological formations and mineral resources. Accordingly, Pulmoddai and other beach placer deposits, Eppawala carbonatite, alluvial placer deposits, and pegmatites have been identified as potential REE resources in Sri Lanka. Monazite, apatite, allanite, and zircon are the primary rare earth (RE) minerals found in the preceding resources. The Pulmoddai mineral sand deposit is considered as the most potential REE resource in the island, which is enriched in monazite containing more than 61% of light rare earth elements (LREEs). Similarly, Eppawala carbonatite contains high concentrations of LREEs. However, despite their significant REE enrichments, to date, no attempt has been made to recover these REE prospects, which essentially conceals their potential of catering for both local and global REE supply chains.
机译：稀土元素（REES），17个元素包含15种镧系元素，钪和钇，由于它们在各种先进技术应用中的重要性而受到影响。全球REES生产主要来自资源，如碳酸石，碱性火岩，放置剂，外侧和离子吸附粘土。最近，REE需求一直在升级，特别是由于可再生能源和国防部门的REE应用，期待未来雷厄供应的全球短缺。因此，REES已被广泛被认为是世界上的战略要素，这迫使新的和替代的REE资源的前景。在这方面，斯里兰卡具有良好的地质环境，意味着存在REE矿化。以前在斯里兰卡的地球化学研究报告了不同地质形成和矿产资源的重大浓度。因此，普尔米多达和其他海滩涂布器沉积物，EPPAWALA碳酸盐盐，冲积烧架沉积物和PEGMATITE已被鉴定为斯里兰卡的潜在REE资源。 Monazite，磷灰石，亚丙酸盐和锆石是前面资源中发现的主要稀土（RE）矿物质。 Pulmoddai矿物砂矿床被认为是岛上最潜在的REE资源，其富含含有超过61％的轻质稀土元素（LERES）的Monazite。同样，EPPAWALA CarbonaTITE含有高浓度的莱勒斯。然而，尽管迄今为止，尽管有重要的REE浓缩，但没有尝试恢复这些REE前景，这基本上隐瞒了当地和全球REE供应链的愿望。

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