@article{10272/23794,
year = {2024},
month = {3},
url = {https://hdl.handle.net/10272/23794},
abstract = {Acid mine drainage (AMD) generated from coal and sulfide mining has attracted much interest due to the high
concentrations of rare earth elements (REE) observed. However, the origin of REE in AMD and particularly the
mechanism of enrichment in medium REE remain uncertain. The combined study of Sr and Nd isotopes can be
used to trace the processes that control the mobility and fractionation of REE in aquatic systems such as AMD.
This work reports for the first time worldwide isotopic data of Sr and Nd in AMDs from sulfide mining (Iberian
Pyrite Belt, SW Spain) and compare with those in host rocks. Additionally, leaching experiments have been
carried out to simulate the water–rock interactions found in these acidic systems. The results obtained strongly
suggest that the origin of REE in AMDs from metal mining may be related to the preferential dissolution of shales
and felsic rocks. The suitability of Sr and Nd isotopic signatures to trace the REE source in AMD-affected systems
has been proven, it provides a new environmental and geochemical prospecting tool which could be useful in
different geological water–rock interaction systems.},
organization = {This research was supported by the AIHODIEL project (PYC20 RE
032 UHU) co-financed by the FEDER program in Andalucía for the
period 2014–2020, LIFEWATCH-INDALO project, and ERA-MIN3
SuMRee project (PCI2024-153500), financed by MICIU/AEI/10.13039/
501100011033, and by the European Union NextGenerationEU/PRTR.
C.R Cánovas thanks the Spanish Ministry of Science and Innovation for
the Postdoctoral Fellowship granted under application reference
RYC2019–027949-I. Jonatan Romero-Matos is financed by a FPU program
of the Spanish Ministry of Education of Vocational Training
(FPU20/04441). Ricardo Millán-Becerro also acknowledges the Spanish
Ministry of Universities for the Margarita Salas Research Grant. Funding
for open access charge: Universidad de Huelva/CBUA. We would also
like to thank Jeffrey G. Catalano (Editor-in-Chief), Melanie Davranche
(Associate Editor), and anonymous reviewers for the support and suggestions
that significantly improved the quality of the original paper.},
publisher = {Elsevier},
title = {Origin of rare earth elements in acid mine drainage traced by strontium and neodymium isotopes},
doi = {10.1016/j.gca.2024.03.025},
author = {León Cortegano, Rafael and Macías Suárez, Francisco and Ruiz Cánovas, Carlos and Millán Becerro, Ricardo and Romero Matos, Jonatan and Nieto Liñán, José Miguel and Romero Matos, Jonatan},
}