@article{articled857e01a,
title   = {Relationship of copper with hydrous ferric oxides: Salobo, Carajas, PA, Brasil},
author = {Veiga, Marcello M. and Schorscher, Johann Hans Daniel and Fyfe, William. S.},
year = {1991},
doi = {10.1016/0169-1368(91)90025-3},
journal   = {Ore Geology Rewiews}
}