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• W1963549839 abstract "Acid mine drainage represents a major source of water pollution in the Lousal area. The concentrations of trace metals and the rare earth elements (REE) in the host rocks, stream sediment, surface waters and acid mine drainage (AMD) associated with abandoned mine adits and tailings impoundments were determined, in order to fingerprint their sources and to understand their mobility and water–rock interaction. The results show that the Fe–SO4-rich acid waters vary substantially in composition both spatially and seasonally. These waters include very low pH (mostly in the range 1.9–3.0), extreme SO4 concentrations (4635–20,070 mg L−1 SO42-), high metal contents (Fe, Al, Cu, Zn and Mn) and very high REE contents. The trace metal concentrations decrease downstream from the discharge points either due to precipitation of neoformed phases or to dilution. The North-American shale composite (NASC)-normalized patterns corresponding to sediment from one stream (Corona stream) show a flat tendency or are slightly enriched in light-REE (LREE). The NASC-normalized patterns corresponding to acidic mine waters show enrichment in the middle REE (MREE) with respect to the LREE and heavy REE (HREE). Moreover, the REE concentrations in acidic mine waters are 2 or 3 orders of magnitude higher than those of the surface waters. Changes of REE concentrations and variation of Eu anomaly show two spatially distinct patterns: (a) pond and spring waters with higher REE concentrations (ranging from 375 to 2870 μg L−1), that records conspicuous negative Eu anomaly, and (b) seeps from tailings impoundments corresponding to lower REE concentrations than the first pattern (ranging from 350 to 1139 μg L−1) with typically negative Eu anomaly. The stream water samples collected from the impacted stream during the spring show a low pH (2.8–3.1) and contain high concentrations of Fe and trace elements (up to 61 mg L−1). Also, temporal variations of the REE concentrations were observed in the Corona waters. The results obtained show that the REE concentrations increase during the winter–spring transition. Stream waters draining the Lousal mine area show high REE concentrations, reaching a maximum value of about 2846 μg L−1 (spring). The MREE concentrations are usually enriched with respect to both the LREE and HREE. A decrease in REE concentrations and a pH increase from 3 to 6 was observed downstream of the confluence of a tributary stream. The geochemistry of the waters strongly influenced the mineralogy and geochemistry of efflorescent sulfates precipitated on the banks of the streams polluted by AMD. The mineralogy is dominated by hexahydrite, rozenite, szomolnokite, alunite, gypsum, halotrychite, coquimbite, copiapite and schwertmannite. The REE concentrations determined in the efflorescent sulfates suggest a selective partitioning of the HREE onto Mg–Al-oxyhydroxides." @default.
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• W1963549839 date "2009-03-01" @default.
• W1963549839 modified "2023-10-09" @default.
• W1963549839 title "Mineralogy and geochemistry of trace metals and REE in volcanic massive sulfide host rocks, stream sediments, stream waters and acid mine drainage from the Lousal mine area (Iberian Pyrite Belt, Portugal)" @default.
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• W1963549839 cites W172117237 @default.
• W1963549839 cites W1966418918 @default.
• W1963549839 cites W1967846392 @default.
• W1963549839 cites W1971290329 @default.
• W1963549839 cites W1975583031 @default.
• W1963549839 cites W1976312343 @default.
• W1963549839 cites W1978988590 @default.
• W1963549839 cites W1981189009 @default.
• W1963549839 cites W1982985086 @default.
• W1963549839 cites W1986829858 @default.
• W1963549839 cites W1989937859 @default.
• W1963549839 cites W1995114895 @default.
• W1963549839 cites W1998898395 @default.
• W1963549839 cites W2002454017 @default.
• W1963549839 cites W2011367341 @default.
• W1963549839 cites W2012546576 @default.
• W1963549839 cites W2012990109 @default.
• W1963549839 cites W2020788899 @default.
• W1963549839 cites W2022349063 @default.
• W1963549839 cites W2022459685 @default.
• W1963549839 cites W2025425589 @default.
• W1963549839 cites W2025529718 @default.
• W1963549839 cites W2040845799 @default.
• W1963549839 cites W2041997179 @default.
• W1963549839 cites W2044099321 @default.
• W1963549839 cites W2044140503 @default.
• W1963549839 cites W2046474819 @default.
• W1963549839 cites W2046761316 @default.
• W1963549839 cites W2047859402 @default.
• W1963549839 cites W2050988691 @default.
• W1963549839 cites W2053735131 @default.
• W1963549839 cites W2054563568 @default.
• W1963549839 cites W2054765581 @default.
• W1963549839 cites W2056703119 @default.
• W1963549839 cites W2058064741 @default.
• W1963549839 cites W2058726488 @default.
• W1963549839 cites W2059614644 @default.
• W1963549839 cites W2060612538 @default.
• W1963549839 cites W2061895284 @default.
• W1963549839 cites W2062192005 @default.
• W1963549839 cites W2062602563 @default.
• W1963549839 cites W2071172756 @default.
• W1963549839 cites W2072416387 @default.
• W1963549839 cites W2072459751 @default.
• W1963549839 cites W2075054863 @default.
• W1963549839 cites W2076592940 @default.
• W1963549839 cites W2076952441 @default.
• W1963549839 cites W2079447957 @default.
• W1963549839 cites W2082700257 @default.
• W1963549839 cites W2082972472 @default.
• W1963549839 cites W2084481447 @default.
• W1963549839 cites W2087937118 @default.
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• W1963549839 cites W2121536019 @default.
• W1963549839 cites W2121817417 @default.
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• W1963549839 cites W2794020129 @default.
• W1963549839 cites W2808690405 @default.
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• W1963549839 doi "https://doi.org/10.1016/j.apgeochem.2008.12.001" @default.
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