Mineral resource assessments provide a synthesis of available information about distributions of mineral deposits in the Earth’s crust. The U.S. Geological Survey prepared a probabilistic mineral resource assessment of undiscovered resources in p
Gray, Floyd fgray@usgs.gov,Hammarstrom, Jane M. jhammars@usgs.gov,Ludington, Stephen,et al. Porphyry copper assessment of Central America and the Caribbean Basin: Chapter I in <i>Global mineral resource assessment</i>. 2014-01-01.