Amistoso, A.E.; Aquino, B.G.; Aunzo, Z.P. .. The first one corresponds to hematite and goethite, mainly at the east of the area, in the zone of .. Results of microthermometric and crushing studies are reported for twenty drill core ... Sheik, C.; Giovannelli, D.; Cox, A. D.; Hummer, D. R.; Pratt, K.; Thomas, D.; Viveiros, M. F..