Academic Journal
Formation of rare earth deposits in carbonatites
| العنوان: | Formation of rare earth deposits in carbonatites |
|---|---|
| المؤلفون: | Anenburg, M, Broom-Fendley, S, Chen, W |
| بيانات النشر: | Mineralogical Society of America |
| سنة النشر: | 2021 |
| المجموعة: | University of Exeter: Open Research Exeter (ORE) |
| مصطلحات موضوعية: | brine-melt, burbankite, critical metals, rare earths, alkaline complexes |
| الوصف: | This is the final version. Available on open access from the Mineralogical Society of America via the DOI in this record ; Carbonatites and carbonatite-related rocks are the premier source for light rare earth element (LREE) deposits. Here we outline a simplified ore formation model for LREE mineralised carbonatites, reconciling field and petrological observations with recent experimental and isotopic advances. REE can strongly partition to carbonatite melts, which are either directly mantle-derived or immiscible from silicate melts. As carbonatite melts evolve, alkalis and REE concentrate in the residual melt due to their incompatibility in early crystallising minerals. In most carbonatites, additional fractionation of calcite or ferroan dolomite leads to evolution into a mobile alkaline “brine-melt” from which primary alkali REE carbonates can form. These carbonates are rarely preserved owing to dissolution by later fluids and are replaced in-situ by monazite and alkali-free REE-(fluor)carbonates. ; Natural Environment Research Council (NERC) ; Australian Research Council (ARC) ; National Natural Science Foundation of China |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| تدمد: | 1811-5209 1811-5217 |
| Relation: | Vol. 17, pp. 327 - 332; NE/R013403/1; LP190100635; http://hdl.handle.net/10871/125870; Elements |
| DOI: | 10.2138/gselements.17.5.327 |
| الاتاحة: | http://hdl.handle.net/10871/125870 https://doi.org/10.2138/gselements.17.5.327 |
| Rights: | © 2022. Open access under a CC Y licence: https://creativecommons.org/licenses/by/4.0/ ; https://creativecommons.org/licenses/by/4.0/ |
| رقم الانضمام: | edsbas.FE53612A |
| قاعدة البيانات: | BASE |
| تدمد: | 18115209 18115217 |
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| DOI: | 10.2138/gselements.17.5.327 |