1992
DOI: 10.1016/0375-6742(92)90131-q
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Rare-earth elements in groundwaters from the Osamu Utsumi mine and Morro do Ferro analogue study sites, Poços de Caldas, Brazil

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Cited by 52 publications
(18 citation statements)
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“…These include acid mine effluents of the abandoned Zn-Pb mine of Santa Lucia in western Cuba (370–860 μg/L) (Romero et al 2010) or stream waters of a Cu–Pb–Zn mining area in Metalliferous Hills, Italy (929 μg/L) (Protano and Riccobono 2002). It is noteworthy that the highest concentration of REE (29 mg/L) at a pH of 3.6 was reported in groundwater from the Osamu Utsumi uranium mine, Brazil (Miekeley et al 1992). …”
Section: Resultsmentioning
confidence: 99%
“…These include acid mine effluents of the abandoned Zn-Pb mine of Santa Lucia in western Cuba (370–860 μg/L) (Romero et al 2010) or stream waters of a Cu–Pb–Zn mining area in Metalliferous Hills, Italy (929 μg/L) (Protano and Riccobono 2002). It is noteworthy that the highest concentration of REE (29 mg/L) at a pH of 3.6 was reported in groundwater from the Osamu Utsumi uranium mine, Brazil (Miekeley et al 1992). …”
Section: Resultsmentioning
confidence: 99%
“…Los datos composicionales seleccionados para este estudio (Tablas 1 y 2) proceden de las soluciones ácidas existentes en la mina de uranio de Osamu Utsumi (Brasil; Miekeley et al, 1992a), en Tabla l.-Análisis químico de las aguas ácidas de Osamu Utsumi (Brasil;Norstrom et al, 1992;Miekeley et al, 1992a) Gimeno et al, 1995), en un área de San Juan Mountains (USA; Nordstrom et al, 1995;Carlson-Foscz et al, 1996) y en Colour Lake (Canadá; Johannesson y Lyons, 1995). Las muestras de la zona del Arroyo del Val-Báde-nas y de San Juan Mountains corresponden a cursos superficiales de aguas ácidas que discurren sobre materiales 1utíticos paleozoicos y brechas volcanoelásticas, respectivamente; las de Osamu Utsumi corresponden a las aguas subterráneas captadas por los sondeos más superficiales de la zona (Nordstrom et al, 1992;Miekeley et al, 1992a), relacionadas con un complejo fonolítico muy alterado hidrotermalmente; y las de Colour Lake son aguas ácidas de un lago instalado sobre materiales silicielásticos (areníticos y lutíticos).…”
Section: Localización Y Caracteres Composicionales De Las Aguas áCidaunclassified
“…Las muestras de la zona del Arroyo del Val-Báde-nas y de San Juan Mountains corresponden a cursos superficiales de aguas ácidas que discurren sobre materiales 1utíticos paleozoicos y brechas volcanoelásticas, respectivamente; las de Osamu Utsumi corresponden a las aguas subterráneas captadas por los sondeos más superficiales de la zona (Nordstrom et al, 1992;Miekeley et al, 1992a), relacionadas con un complejo fonolítico muy alterado hidrotermalmente; y las de Colour Lake son aguas ácidas de un lago instalado sobre materiales silicielásticos (areníticos y lutíticos).…”
Section: Localización Y Caracteres Composicionales De Las Aguas áCidaunclassified
“…A VG surface analysis system equipped with a CLAM 2 electron analyser and a monochromatized Mg Kα radiation (1253.6 eV) was used in this analysis. Magnesium radiation was chosen to prevent the superposition of the oxygen KLL signal over the lanthanides 3d binding energies (MOULDER et al, 1995). The C 1s signal (284.6 eV) was employed as a reference in the calibration of the binding energies (BE) of the elements detected.…”
Section: Discussionmentioning
confidence: 99%
“…Due to the complex mineralogy of the waste rock, a wide range of elements, such as U, Th, Mn, REE are found in the AMD (MIEKELEY et al, 1992), which, in order to meet the concentrations required by government regulators (CONAMA, 2011) are treated with lime before being discharged into the environment . The flow rate of the AMD treatment plant stands between 150 and 300 m 3 h -1 and the neutralization of the acidic waters consumes about 12 t of lime daily, producing a considerable volume of precipitate, which is currently stored in the mine open pit .…”
Section: Site Descriptionmentioning
confidence: 99%