Paleoproterozoic volcanic centers of the São Félix do Xingu region, Amazonian craton, Brazil: hydrothermal alteration and metallogenetic potential - Cruz, Raquel Souza da; Fernandes, Carlos Marcello Dias; Villas, Raimundo; Juliani, Caetano; Monteiro, Lena Virgínia Soares; Lagler, Bruno; Echeverri, Carlos (Journal of Volcanology and Geothermal Research, 2016)