Caracterização física e química de rochas carbonáticas de duas áreas localizadas no município de Crateús-CE

Abstract

Brazil has a large number of deposits of carbonate rocks throughout its territorial area, however, some of them do not have detailed studies of technological characterization. The municipality of Crateús has six areas with occurrences of carbonate rocks already geologically mapped by CPRM (Geological Survey of Brazil), but these areas do not have information on physical chemical characterization. In this sense, this work aims to carry out the chemical and physical characterization of limestones from two of these areas located in the western portion of the municipality. For this, the areas for collection were selected based on the information already available, and then the preliminary initiation was carried out. The following techniques were used to carry out the chemical and physical characterization: scanning electron microscopy (SEM­EDS), analysis of the macroscopic properties of minerals, relative density by pycnometry, apparent density by volume displaced in the test and calcination. The results of the physical and chemical characterization are appreciated by the limestones, indicating the best use for the study materials. It is expected to collaborate with the academic community and with the local mining sector, aiming at valuing the area in relation to the development of future mining ventures.