Sousa, Daniel José Lima deVarajão, Angélica Fortes Drummond ChicarinoYvon, Jacques2012-07-112012-07-112006SOUZA, D. J. L. de; VARAJÃO, A. F. D. C. ; YVON, J. Geochemical evolution of the capim river kaolin, northern Brazil. Journal of Geochemical Exploration, v. 88, n. 1-3, p. 329-331, jan./mar. 2006. Disponível em: <https://www.sciencedirect.com/science/article/pii/S0375674205001639>. Acesso em: 11 jul. 2012.03756742http://www.repositorio.ufop.br/handle/123456789/1086The Capim River kaolin, located in the eastern Brazilian Amazon, constitutes one of the most important kaolin deposits in the world. Known for its high whiteness, its noble application is in the paper industry. Studies were carried out on samples from the six facies of the deposit (sand kaolin, soft kaolin, lower transition facies, ferruginous crust, upper transition facies and flint kaolin) in order to trace its geochemical evolution. The kaolin developed at the expense of Cretaceous sandy–clayey sediments of the Ipixuna Formation. Intense lateritic processes characterized by ferruginization and deferruginization mechanisms led to the distinction of the different facies.en-USDeferruginization processKaoliniteFerruginization processArtigo publicado em periodicoO periódico Journal of Geochemical Exploration concede permissão para depósito deste artigo no Repositório Institucional da UFOP. Número da licença: 3333731005359.