The Jurema Mafic-Ultramafic Complex: discovery of a Fe-Ti ± V ± Co mineralized body at Betânia, State of Pernambuco, Brazil, Transversal Zone, Borborema Province

Autor: LIMA, Felipe J. da C., LAGES, Geysson de A., OLIVEIRA, Roberto G. de, MORAIS, Débora M. F. de, BRASILINO, Roberta G., VIRGENS NETO, Joaquim das, RODRIGUES, Marília de A. C., HORN, Bruno L. D., OLIVEIRA, Saulo F. de
Jazyk: angličtina
Rok vydání: 2016
Předmět:
Zdroj: Repositório Institucional de Geociências-RIGEO
Companhia de Pesquisa de Recursos Minerais (CPRM)
instacron:CPRM
Popis: The Transversal Zone of the Borborema Province (BP) stands out for the occurrence of mineralized mafic-ultramafic complexes and the so called Floresta Titaniferous District. This short paper deals with the discovery of a mafic-ultramafic complex, the Jurema Complex (CMUJ), and presents preliminary geological, geophysical and geochemical results. The discovery, located in Betânia, State of Pernambuco, is a consequence of integration of several remote sensor data conducted in the westernmost portion of the Alto Moxotó Terrane of the BP. The Jurema Mafic-Ultramafic Complex crops out as a 2.5 x 0.6 km ellipsoidal, zoned/stratiform mafic-ultramafic intrusion with possible concealed lateral extension of at least 6 km to ESE, according to geophysical modelling. From core to rim, the intrusion shows igneous zoning of metaperidotite, cumulatic metapyroxenite, garnet-metagabbro and metahornblendite. Massive Fe-Ti oxide occurrences were found dispersed all over the complex. Fe-Ti oxide mineralization is composed of polygonal massive clusters of martitized magnetite and ilmenite occurring in similar modal proportions. First analyses performed using portable X-ray fluorescence yielded Fe (52.89-52.02%), Ti (10.65-9.80%), V (0.36-0.33%) and Co (0.38-0.29%) contents. The discovery and the preliminary characterization of the CMUJ expand the prospective area of the Floresta Titaniferous District into a kilometric-scale linear belt.
Databáze: OpenAIRE
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