Characterization of regolith-hosted rare earth element deposits using reflectance spectroscopy: Framework towards an efficient and reliable field exploration tool
文献类型：期刊论文
| 作者 | Li, Martin Yan Hei2,3; Liu, Jiacheng1,6; Tan, Wei5; Zhou, Jia-Xi4; Zhou, Mei-Fu3 |
| 刊名 | JOURNAL OF GEOCHEMICAL EXPLORATION
 |
| 出版日期 | 2024-12-01 |
| 卷号 | 267页码:19 |
| 关键词 | Rare earth elements Regolith-hosted deposits Reflectance spectroscopy VNIR-SWIR spectroscopy Clay minerals Weathering |
| ISSN号 | 0375-6742 |
| DOI | 10.1016/j.gexplo.2024.107578 |
| 英文摘要 | With a growing demand for the rare earth elements (REE), exploration of regolith-hosted REE resources worldwide has been thriving in recent years and development of a rapid and reliable field-based tool will greatly facilitate the survey and exploration. In this study, we use visible and short-wave infrared (VNIR-SWIR) reflectance spectroscopy to comprehensively evaluate the applicability of the technique to explore regolith-hosted REE resources, exemplified by three representative regolith-hosted REE deposits in China. Neodymium among the REE shows reliably detectable spectral features in the VNIR-SWIR spectroscopy down to concentrations of 10-50 ppm in field samples with heterogeneous mineral grain sizes. The Nd spectral intensity of electronic transition at the band of similar to 800 nm is correlated with bulk Nd concentrations and can be used as semi-quantitative indicators for the Nd concentrations, thereby the total REE in regolith. Moreover, VNIR-SWIR spectroscopy is demonstrated to be capable of delineating favorable ore-bearing mineralogy by characterizing the abundance and type of clay minerals and Fe (oxyhydr)oxides, and the crystallinity of kaolinite-group minerals. However, the Nd spectral features of samples with high bulk Fe2O3 contents (>3 wt%) are significantly masked due to overlapping by the strong absorption features of ferric (oxyhydr)oxides. VNIR-SWIR spectroscopy is deemed to be applicable to the exploration of regolith-hosted REE resources developed from Fe-poor felsic rocks. |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:001318975400001 |
| 源URL | [http://ir.gig.ac.cn/handle/344008/81116]  |
| 专题 | 中国科学院矿物学与成矿学重点实验室 |
| 通讯作者 | Li, Martin Yan Hei; Zhou, Mei-Fu |
| 作者单位 | 1.Univ Hong Kong, Dept Earth Sci, Pokfulam Rd, Hong Kong, Peoples R China 2.Univ Brighton, Sch Appl Sci, Brighton BN2 4GJ, England 3.Chinese Acad Sci, State Key Lab Ore Deposit Geochem, Inst Geochem, Guiyang 550081, Peoples R China 4.Yunnan Univ, Sch Earth Sci, Key Lab Crit Minerals Metallogeny Univ Yunnan Prov, Kunming 650500, Peoples R China 5.Chinese Acad Sci, Guangzhou Inst Geochem, Key Lab Mineral & Metallogeny, Guangdong Prov Key Lab Mineral Phys & Mat, Guangzhou 510640, Peoples R China 6.Univ Hong Kong, Lab Space Res, Pokfulam Rd, Hong Kong, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Martin Yan Hei,Liu, Jiacheng,Tan, Wei,et al. Characterization of regolith-hosted rare earth element deposits using reflectance spectroscopy: Framework towards an efficient and reliable field exploration tool[J]. JOURNAL OF GEOCHEMICAL EXPLORATION,2024,267:19. |
| APA | Li, Martin Yan Hei,Liu, Jiacheng,Tan, Wei,Zhou, Jia-Xi,&Zhou, Mei-Fu.(2024).Characterization of regolith-hosted rare earth element deposits using reflectance spectroscopy: Framework towards an efficient and reliable field exploration tool.JOURNAL OF GEOCHEMICAL EXPLORATION,267,19. |
| MLA | Li, Martin Yan Hei,et al."Characterization of regolith-hosted rare earth element deposits using reflectance spectroscopy: Framework towards an efficient and reliable field exploration tool".JOURNAL OF GEOCHEMICAL EXPLORATION 267(2024):19. |
入库方式： OAI收割
来源：广州地球化学研究所
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