Trace and major elements in rock samples from Itingussú River Basin, Coroa-Grande, Rio de Janeiro

• Autor(a) principal: Bellido, Luis Fernando
• Data de Publicação: 2006
• Outros Autores: Araripe, Denise R., Patchineelam, Sambasiva R., Bellido, Alfredo Victor Bernedo, Guimarães, M. T. (?), Vasconcellos, Marina B. A., Instituto de Engenharia Nuclear, Centro de Pesquisas Minerais, Universidade Federal Fluminense, Instituto de Pesquisas Energéticas e Nucleares
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Institucional do IEN
• Texto Completo: http://carpedien.ien.gov.br:8080/handle/ien/2702
• topic: Instrumental Neutron Activation; Chemical analysis; Chemical composition; Element abundance; Petrography rocks; Thorium; River Basin; Apatite; Titanite; Accessory Mineral

The goal of the present work was to determine the concentration of 23 elements by instrumental neutron activation analysis in rock samples from the vicinity of Itingussú River, in order to investigate the contribution of trace and major elements from the local lithology to the river basin. The Itingussú River Basin ends in a mangrove area not yet largely impacted by antropogenic activities. So far, there are no data for the concentration of trace elements in that region, even though these data are important to the understanding of the influence of the rocks on the composition of the mangrove sediments. The results showed some enrichment of Th and some light rare earths, probably because of the presence of the mineral allanite and other accessory minerals, as identified by petrographic analysis.