Mapeamento lito-estrutural da cava I e III da Mina de Manganês do Azul, Carajás – Pará

Abstract

The Azul manganese deposit is geologically located within the bundle of the Carajás Fault, the central portion of Carajás Transcurrent System. The deposit is related to pelitic sedimentary rocks that are at the base of the Águas Claras Formation, in discordant contact, above the Grão-Pará Group, (Nogueira et al., 1995). Currently, three open-air producing fronts are underway in the area, they are divided into Mine I (main mine), Mine II and Mine III, in which rocks are classified as Siltito interspersed with Argilites and pelitic manganese rocks (ore), these rocks are organized in sets of folds and faults in different scales.For such rocks, production names were given in which it reflects the overall global manganese content and in some cases the origin of the material.For a better understanding of the mines and for the mining planning, were made Lito-structural Maps which are the basis of the execution for new mining fronts.These maps are generated through field mapping and data processing with the Maptek Vulcan software that besides generating the map produces data capable of providing the amount of material to be found and to be removed from each mining front, turning into indispensable for mine planning.