ERN Item Type:
- Curriculum Materials
In response to the growing demans for information on the global mineral-resource base, the U.S. Geological Survey (USGS) completed assessments for udiscovered resources of porphyry and sediment-hosted copper, platinum-group elements, and potash. The USGS conducts national and global assessments or renewable and nonrenewable resources to support decision making. Mineral resource assessments provide a synthesis of available information about where mineral deposits are known and suspected in the Earth's crust, what commodities may be present, and amounts of undiscovered resources.