Spatial data available on the Web at http://mrdata.usgs.gov.

Bibliographic Details
Corporate Author:	Mineral Resources Program (Geological Survey)
Format:	Government Document eBook
Language:	English
Published:	[Reston, Va.] : U.S. Dept. of the Interior, U.S. Geological Survey, [2002]
Series:	Fact sheet (Geological Survey (U.S.)) ; FS-02-071.
Subjects:	Geographic information systems. Earth sciences > Databases. Maps > Databases. Geology > Databases. Mines and mineral resources > Databases.
Online Access:	https://purl.fdlp.gov/GPO/LPS100338