Geology and genesis of major world hardrock uranium deposits, an overview

Abstract

Distribution of iron formations and uranium deposits.

The Itataia phosphate-uranium deposit (Ceará, Brazil) new petrographic, geochemistry and isotope studies

“…Most current classification schemes for uranium deposits emphasize differences in host rock type, host environment, geologic time and geotectonic setting (e.g. Roberson et al, 1978;Bowie, 1979;Nash, 1981;Ferguson, 1987;Dahlkamp, 2009Dahlkamp, , 1993Dahlkamp, ,1980Plant et al, 1999;Misra, 2000;Cuney, 2014Cuney, , 2010Cuney, ,2009. Although these classification schemes remain largely valid and operate with guides and metalogenetic models, it is often difficult to adopt a single model to describe some deposits over time and in different geological settings.…”

U.S. Geological Survey-INGEOMINAS mineral resource assessment of Colombia

“…Ore concentrations (After Nash et. at., 1981) Cross-section: DESCRIPTION Phosphorites formed in warm currents along the eastern coasts of continents consist of phosphatlc limestones or sandstone.…”