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Release, Migration, Sorption, and (Re)Precipitation of U during Peraluminous Gr...
Pinto, Marina M. S. Cabral; Silva, Maria M. V. G.; Neiva, Ana M. R.; Guimarães, Fernanda; Silva, PauloIn this work, in order to study the release, migration, sorption, and (re)precipitation of uranium (U) during alteration under oxidizing conditions, we carried out a systematic study using scanning electron microscopy, X-ray maps, and electron microprobe analyses on uranium minerals—such as uraninite, coffinite, saleeite, meta-saleeite, and thorite—and U-bearing minerals—such as xenotime, monazite, apatite, and...
The Cancer and Non-Cancer Risk of Santiago Island (Cape Verde) Population due t...
Pinto, Marina M. S. Cabral; Silva, Maria M. V.; Silva, Eduardo Ferreira da; Marinho-Reis, A. PaulaThe hazard index (HI) and carcinogenic risk due to the exposure of some potentially toxic elements to the Santiago Island (Cape Verde) population were calculated, considering soil ingestion, inhalation, and dermal contact as exposure pathways. The topsoil of Santiago Island, compared with that of the upper continental crust, is enriched with Co, Cr, Cu, Ni, V, Zn, Mn, and Cd. Hazard indices (HIs) for these meta...
Environmental Risk Assessment Based on High-Resolution Spatial Maps of Potentia...
Pinto, Marina M. S. Cabral; Silva, Eduardo A. Ferreira da; Silva, Maria M. V. G.; Melo-Gonçalves, Paulo; Candeias, CarlaGeochemical mapping is the base knowledge to identify the regions of the planet with critical contents of potentially toxic elements from either natural or anthropogenic sources. Sediments, soils and waters are the vehicles which link the inorganic environment to life through the supply of essential macro and micro nutrients. The chemical composition of surface geological materials may cause metabolic changes w...
Uranium minerals from a portuguese variscan peraluminous granite, its alteratio...
Pinto, Marina M. S. Cabral; Silva, Maria M. V. G.; Neiva, A.M.R.; Guimarães, Fernanda; Silva, Paulo Bravo
The Vale de Abrutiga uranium phosphates mine, central Portugal
Pinto, Marina M. S. Cabral; Silva, Maria M. V. G.A brief summary about the composition and origins of the U deposit is present. The mineralization is composed by secondary uranium phosphates (saleeite and meta-saleeite). The precipitation was probably the main responsible factor for U retention within the quartz veins leading to the uranium phosphate mineralization of Vale de Abrutiga.; http://www.sciencedirect.com/science/article/B7CW6-4PMJB1M-1/1/dd0e0fed43...