Porphyry copper deposits of the world: database, maps, and preliminary analysis

Online link http://pubs.usgs.gov/of/2002/0268/
Description A compilation of worldwide mineral deposits of this type. This older version was revised and updated in OFR-2008-1155.
Originators Singer, Donald A.; Berger, Vladimir I.; and Moring, Barry C.
Publication U.S. Geological Survey Open-File Report 2002-268