Kerch ironstones as unconventional Nd and MREE resources: features and prospects
Based on the mineralogy and major and trace element composition (including REE+Y) of bulk samples and in separate size fractions of the ore, the contribution of different REE+Y species to the total REE budget of ironstones from the Kamysh-Burun trough was estimated. Kerch ores have the structure of...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Central Research Institute of Geological Prospecting for Base and Precious Metals (TsNIGRI)
2022-03-01
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| Series: | Руды и металлы |
| Subjects: | |
| Online Access: | https://rm.tsnigri.ru/index.php/main/article/view/173 |
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| Summary: | Based on the mineralogy and major and trace element composition (including REE+Y) of bulk samples and in separate size fractions of the ore, the contribution of different REE+Y species to the total REE budget of ironstones from the Kamysh-Burun trough was estimated. Kerch ores have the structure of REE+Y accumulation typical for marine sedimentary iron ore deposits. Light REEs form independent mineralization of authigenic phosphates (rhabdophane-type LREE(PO4)∙nH2O phases) enriched in La, Pr, Nd, and Ca. Medium REEs are mainly adsorbed on Fe3+-(oxy)hydroxides forms. The coexisting Nd and MREE enrichment combined with Th and U depletion allow considering the Kerch ironstones as commercially attractive unconventional resources of rare-earth elements. |
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| ISSN: | 0869-5997 2782-554X |