Anomalias de Fator Metal associada à ocorrência de Cobre sulfetado estruturalmente controlado

Abstract

This paper presents the results of the Electrical Resistivity and Induced Polarization geophysical methods applied in mineral occurrence area of copper sulphites. They were measured the parameters electric resistivity and chargeability, through the technique of electric profiling, with willing lines in surface of the azimutal form. The area is located in the rural zone of the Cacapava do Sul city (RS), inserted in the Camaqua sedimentary basin, formed by sedimentary and vulcanogenics stratigraphycs units, locally characterized by medium to coarse arkosic sandstone, intensely cimented and recrystallizeds, with azurite and malachite presents in fractures. Structural measures were accomplished in fractures that resulted in the definition of two assemblages (N18o and N112o). The line N6° crosses the N112° fractures assemblage and it presents anomaly of high intensity in depth, in contrast with N96° line that crosses the N18° assemblage and it describes the presence of anomaly of very high intensity in depth. The field acquisition in azimutal format made possible the elaboration of 3D model and that elucidates clearly form, anomalous areas associated the carbonates presence in surface and sulfhides in depth. The crossing between the geophysical result and structural measures allowed determine the mineralization directions principals.