U.S. Geological Survey Open-File Report 2009-1045
Introduction
Databases of mineral deposits and occurrences are essential to conducting assessments of undiscovered mineral resources. In the USGS‘s (U.S. Geological Survey) global assessment of undiscovered resources of copper, potash, and the platinum-group elements (PGE), only a few mineral deposit types will be evaluated. For example, only porphyry-copper and sediment-hosted copper deposits will be considered for the copper assessment. To support the global assessment, the USGS prepared comprehensive compilations of the occurrences of these two deposit types in order to develop grade and tonnage models and delineate permissive areas for undiscovered deposits of those types. This publication identifies previously published databases and database records that describe PGE, nickel, and chromium deposits and occurrences. Nickel and chromium were included in this overview because of the close association of PGE with nickel and chromium mineralization. Users of this database will need to refer to the original databases for detailed information about the deposits and occurrences. This information will be used to develop a current and comprehensive global database of PGE deposits and occurrences. |
Posted March 20, 2009
The spatial data from this report are provided as a KML. To view it, Download the latest version of Google® Earth free of charge. The database for this report is provided as an MDB. To view a report snapshot without having the standard or run-time versions of Microsoft Access 97 through Access 2007, Download the Snapshot Viewer for Microsoft Access free of charge. The text of this report is presented in Portable Document Format (PDF); at least version 7 of Adobe Reader or similar software is required to view it. Download the latest version of Adobe Reader, free of charge. |
Causey, J.D., Galloway, J.P., and Zientek, M.L., 2009, An index to PGE-Ni-Cr deposits and occurrences in selected mineral-occurrence databases: U.S. Geological Open-File Report 2009-1045 [https://pubs.usgs.gov/of/2009/1045/].
Introduction
Acknowledgments
Data Sources
Data Format and Presentation
Discussion
Selected References
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