Porphyry copper deposits of the world

Online link https://mrdata.usgs.gov/porcu/
Description Information on porphyry copper deposits from around the world with grade and tonnage models, a general classification based on geologic setting, mineralogy, with data allowing locations of these deposits to be plotted using GIS.
Originators Singer, Donald A.; Berger, Vladimir I.; and Moring, Barry C.
Publication U.S. Geological Survey Open-File Report 2008-1155
Metadata Questions and answers