Aplicação do Sensoriamento Remoto e Espectroscopia de Refletância para a Exploração de Minério de Ferro no Setor Intracontinental do Orógeno Araçuaí-Oeste Congo
mineral exploration; iron ore; remote sensing; reflectance spectrometry; Orgen Araçuaí-West Congo
This study proposes to use spectral analysis techniques (Mixture Tuned Matched Filtering - MTMF and Spectral Angle Maper - SAM) using images from the Sentinel-2 sensor to guide the discrimination and delimitation of iron rich sites in the intracontinental sector of the Araçuaí Orogen -Owest Congo. This sector comprises the folding and riding belts of the Serra do Espinhaço do Norte and Chapada Diamantina, both developed at Ediacarano. For this work two iron ore (hematite and goethite) extraction areas were selected in Caetité and Piatã, located respectively in these belts, in the state of Bahia. At these sites, rock samples were collected for petrographic, geochemical and spectorradiometric analyzes to guide the search for other targets for iron ore prospecting in the region.