UTEM case history of a base metal prospect Goianesia, Brazil

Abstract

The ground UTEM electromagnetic system was used to discover a large extention to the known massive sulphides at the Cafelandia Prospect in Goias state, Brazil. Large in-loop surveys were used to delineate a blind mineralized horizon with a 3.5 km strike length, shallow dip and high conductivity. Subsequent drilling has shown that the conductive horizon consists of bands of massive sulphides within an large layer of disseminated sulphides. The capacity of the UTEM time domain electromagnetic system in separating multiple conductors at depth, and the quantitative interpretation possible from the data collected make this transient EM system a highly effective tool in searching for deep massive sulphides in the Cafelandia Project area.