Evidence of rare earth elements origin in acid mine drainage from the Iberian Pyrite Belt (SW Spain)
نویسندگان
چکیده
Acid mine drainage (AMD) is a worldwide pollution problem of watersheds. In addition to toxic metal(oid)s and acidity, many elements economic interest are released into the environment, which make AMD potential strategic secondary source these such as rare earth (REE). Despite importance metals, their origin in still uncertain. Recent hypotheses suggest preferential leaching REE-enriched minerals possible source. Leaching tests with H2SO4 have been developed simulate interaction under formation conditions sulfide bodies host rocks from two representative mining areas Iberian Pyrite Belt: Perrrunal Poderosa mines (SW Spain). The REE patterns Ce Eu anomalies rock leachates confirmed geochemical relationship between certain country (felsic mafic volcanics, shales). A detailed chemical mineralogical study has existence diversity high concentrations REE. Thus, highest contents also those fast dissolution kinetics acid conditions: phosphates (monazite xenotime type) carbonates (parisite type). Finally, petrographic evidence selective clearly supports main AMD.
منابع مشابه
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ژورنال
عنوان ژورنال: Ore Geology Reviews
سال: 2023
ISSN: ['0169-1368', '1872-7360']
DOI: https://doi.org/10.1016/j.oregeorev.2023.105336