Caracterização do minério de mármore na região do Domínio Ceará Central, no município de Canindé-CE

Abstract

The Central Ceara Domain (DCC), inserted in the Northern Borborema Province, has been the target over the last decades of various works, theses, dissertations and scientific research due to its lithological content, geological evolution and potential for mineral resources. This tectonostructural domain is extensively covered by the metasedimentary rocks of the Ceara Complex, which has an important contribution of marble, encouraging the interest of the present work for the discovery and cartography of possible exploitable reserves of this industrial rock, through geological mapping of detail (1: 10.000) of two areas favorable to the material of interest, both located in the municipality of Caninde/ CE. They were collected and described from 374 rocky outcrops, with representative samples of the lithostratigraphic units Caninde and Independence of the Ceará Complex, which were analyzed petrographically through the polarizing microscope and, chemically, by the scanning electron microscope (SEM) coupled to the EDS, XRD (X-ray Diffraction) and FRX (X-Ray Fluorescence), for the differentiation of pure and impure calcitic and dolomitic marbles. With the execution of the programmed methodology, it was established the productive prognosis of the targets of this work, pointing out the locations, as well as the marble lenses, which present pre-feasibility to the mining stage, with quality for lime production, cement industry employment and, in one specific and noblest case, use for the ornamental rock and coating production. In addition to establishing the vocation of the areas, the present work presents information that contributes to the geological knowledge about the evolution, high grade metamorphism products and lithological contents of the lithostratigraphic units that characterize the QPC association of continental margin passive in focus in this region.