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Open-File Report 02-268

Notice: This USGS Publication has been Superseded by Open-File Report 2005-1060

Porphyry Copper Deposits of the World: Database, Maps, and Preliminary Analysis

By Donald A. Singer, Vladimir I. Berger, and Barry C. Moring

Thumbnail of map 1 PDF from report  (3.6 MB)Introduction

Mineral deposit models are important in exploration planning and quantitative resource assessments for two reasons: (1) grades and tonnages among deposit types are significantly different, and (2) many types occur in different geologic settings that can be identified from geologic maps. Mineral deposit models are the keystone in combining the diverse geoscience information on geology, mineral occurrences, geophysics, and geochemistry used in resource assessments and mineral exploration. Far too few thoroughly explored mineral deposits are available in most local areas for reliable identification of the important geoscience variables or for robust estimation of undiscovered deposits—thus we need mineral-deposit models. Globally based deposit models, such as those presented here, allow recognition of important features because the global models demonstrate how common different features are. Well-designed and -constructed deposit models allow geologists to know from observed geologic environments the possible mineral deposit types that might exist, and allow economists to determine the possible economic viability of these resources in the region. Thus, mineral deposit models play the central role in transforming geoscience information to a form useful to policy makers. The foundation of mineral deposit models is information about known deposits—the purpose of this publication is to make this kind of information available in digital form for a group of porphyry copper deposits.

This publication contains a computer file of information on porphyry copper deposits around the world. It also presents new grade and tonnage models for three subtypes of porphyry copper deposits, maps showing locations and general ages of these deposits, and a preliminary analysis with a number of figures summarizing many of the properties of these porphyry-style deposits. These summaries can be considered a new, quantified, form of most parts of descriptive models such as those in Cox and Singer (1986). The value of this information and analyses depends critically on the consistent manner of data gathering. For this reason, we first discuss the rules used in this compilation. Next the fields of the data file are considered. Finally, we discuss some of the things that can be done with the data.

First posted July 12, 2002

Data files and tables

  • PorCu.G-T XLS (9 kB)
    A tab-delineated text file containing the tonnages, and the copper, molybdenum, silver, and gold grades, used in the grade and tonnage model for porphyry Cu deposits
  • PorCu-Au.G-T XLS (5 kB)
    A tab-delineated text file containing the tonnages, and the copper, molybdenum, silver, and gold grades, used in the grade and tonnage model for porphyry Cu-Au deposits
  • PorCu-Mo.G-T XLS (3 kB)
    A tab-delineated text file containing the tonnages, and the copper, molybdenum, silver, and gold grades, used in the grade and tonnage model for porphyry Cu-Mo deposits
  • Types XLS (1 kB)
    A tab-delineated text file containing deposit-type numbers and their names
  • PorCu.Mins XLS (82 kB)
    A tab-delineated text file noting the presence (1) or absence (0) of reported minerals in deposits used in the porphyry Cu grade and tonnage model
  • PorCu-Au.Mins XLS (28 kB)
    A tab-delineated text file noting the presence (1) or absence (0) of reported minerals in deposits used in the porphyry Cu-Au grade and tonnage model
  • PorCu-Mo.Mins XLS (11 kB)
    A tab-delineated text file noting the presence (1) or absence (0) of reported minerals in deposits used in the porphyry Cu-Mo grade and tonnage model
  • PorCu.Rocks XLS (22 kB)
    A tab-delineated text file noting the presence (1) or absence (0) of reported rocks in deposits used in the porphyry Cu grade and tonnage model. Rocks are grouped according to Gillespie and Styles (1999)
  • PorCu-Au.Rocks XLS (9 kB)
    A tab-delineated text file noting the presence (1) or absence (0) of reported rocks in deposits used in the porphyry Cu-Au grade and tonnage model. Rocks are grouped according to Gillespie and Styles (1999)
  • PorCu-Mo.Rocks XLS (4 kB)
    A tab-delineated text file noting the presence (1) or absence (0) of reported rocks in deposits used in the porphyry Cu-Mo grade and tonnage model. Rocks are grouped according to Gillespie and Styles (1999)

Map files

  • Map 1 PDF (3.6 MB)
    Locations of all porphyry copper deposits in the PorCu.FM5 file plotted on a world map
  • Map 2 PDF (5.4 MB)
    Generalized ages of all porphyry copper deposits in the PorCu.FM5 file plotted on a world map
  • Map 3 PDF (337 kB)
    Locations and generalized ages of all porphyry copper deposits located in Europe in the PorCu.FP5 file plotted on a regional map
  • Map 4 PDF (415 kB)
    Locations and generalized ages of all porphyry copper deposits located in and just south of the Philippines in the PorCu.FP5 file plotted on a regional map
  • Map 5 PDF (942 kB)
    Locations and generalized ages of all porphyry copper deposits located in Northwestern North America (excluding Alaska) in the PorCu.FP5 file plotted on a regional map
  • Map 6 PDF (942 kB)
    Locations and generalized ages of all porphyry copper deposits located in Central and South America in the PorCu.FP5 file plotted on a regional map

For additional information, contact:
Geology, Minerals, Energy, and Geophysics Science Center
U.S. Geological Survey
345 Middlefield Road, MS 901
Menlo Park, CA 94025-3591
http://geomaps.wr.usgs.gov/gmeg/

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Suggested citation:

Singer, Donald A., Berger, Vladimir I., Moring, Barry C., 2002, Porphyry Copper Deposits of the World: Database, Maps, and Preliminary Analysis: U.S. Geological Survey Open-File Report 02-268, 62 pp., https://pubs.usgs.gov/of/2002/0268/.



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