Probabilistic mineral assessment research & development publications

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• Berger, V.I., Singer, D.A., and Orris, G.J., 2009, Carbonatites of the World, Explored Deposits of Nb and REE - Database and grade and tonnage models: U.S. Geological Survey Open-File Report 2009-058 [http://pubs.usgs.gov/of/2009/1139/]
• Cox, D.P. and Singer, D.A, 2007, Descriptive and grade-tonnage models and database for iron oxide Cu-Au deposits:  U.S. Geological Survey Open-File Report 2007–1155 [http://pubs.usgs.gov/of/2007/1155/].
• Singer, D.A., Berger, V.I., and Moring, B.C., 2008, Porphyry copper deposits of the world: database, map, and grade and tonnage models, 2008: U.S. Geological Survey Open-file Report 2008–1155, [http://pubs.usgs.gov/of/2008/1155/].
• Singer, D.A., Berger, V.I., and Moring, B.C., 2009, Sediment-hosted zinc-lead deposits of the world; database and grade and tonnage models: U.S. Geological Survey Open-File Report 2009-1252, [http://pubs.usgs.gov/of/2009/1252/]
• Mosier, D.L., Berger, V.I., and Singer, D.A., 2009, Volcanogenic massive sulfide deposits of the world—Database and grade and tonnage models: U.S. Geological Survey Open-file Report 2009–1034, [http://pubs.usgs.gov/of/2009/1034/].