Publicação: The behavior of dissolved uranium in groundwaters of the Morro do Ferro thorium deposit, Brazil
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Groundwater samples were collected for several months in boreholes drilled at Morro do Ferro, a thorium and rare earth deposit located on the Poços de Caldas Plateau, Minas Gerais State, Brazil. An aquifer system has developed in the weathered mantle due to in situ intense alteration. The weathered zone includes a thick argillaceous laterite greater than 100 m thick. The U content and 324U/238U activity ratio were measured in the groundwater samples and in spoil samples of a borehole drilled in the ore body. Some possible mechanisms related to the mobilization of uranium are considered such as complexation with humic substances and adsorption by clays. © 1989.
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Thorium Deposits--Brazil, Uranium Compounds--Solubility, Argillaceous Laterite, High-Grade Thorium, Subsurface Flow, Weathering Processes, Water, Underground, adsorption by clay, aquifer system, complexation with humic substance, dissolved uranium, groundwater, groundwater quality, thorium deposit, uranium isotope, uranium mobilization, uranium-234/uranium-238 activity ratio, weathered zone, Brazil, Minas Gerais State, Pocos de Caldas Plateau, Morro do Ferro, Brazil, Pacos de Caldes Plateau, Morro de Ferro
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Inglês
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Journal of Hydrology, v. 107, n. 1-4, p. 155-168, 1989.
