Publicação
Geoenvironmental characterization of gold mine tailings from Minas Gerais and Goiás, Brazil
| Resumo: | For more than two centuries, sulfide gold ores have been treated at metallurgical plants located in Nova Lima, Santa Barbara and Crixás. Brazil. In this study, geochemical, mineralogical, and textural properties of tailings from eight tailings deposits were analysed. The samples show high concentration of Au, hosted in different minerals. In addition, samples contain S, Fe, and As. Sulfides, oxides, and sulfates are present, some as preserved relics. This work highlights different geochemistry and mineralogy, dependent on the nature of the tailings. Such information is critical to support long-term decisions about tailings management and circular economy. |
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| Autores principais: | Lemos, Mariana |
| Outros Autores: | Valente, Teresa Maria Fernandes; Marinho Reis, A. Paula; Fonseca, Rita; Delbem, Itamar; Filho, José Gregório; Guabiroba, Fernanda; Pantaleão, João; Magalhães, Marcus |
| Assunto: | Environmental geochemistry Mineralogy Mining Railings Brazil Ciências Naturais::Ciências da Terra e do Ambiente Indústria, inovação e infraestruturas |
| Ano: | 2022 |
| País: | Portugal |
| Tipo de documento: | capítulo de livro |
| Tipo de acesso: | acesso aberto |
| Instituição associada: | Universidade do Minho |
| Idioma: | inglês |
| Origem: | RepositóriUM - Universidade do Minho |
| Resumo: | For more than two centuries, sulfide gold ores have been treated at metallurgical plants located in Nova Lima, Santa Barbara and Crixás. Brazil. In this study, geochemical, mineralogical, and textural properties of tailings from eight tailings deposits were analysed. The samples show high concentration of Au, hosted in different minerals. In addition, samples contain S, Fe, and As. Sulfides, oxides, and sulfates are present, some as preserved relics. This work highlights different geochemistry and mineralogy, dependent on the nature of the tailings. Such information is critical to support long-term decisions about tailings management and circular economy. |
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