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:
Online Access:https://purl.fdlp.gov/GPO/LPS100338
Description
Item Description:Title from title screen (viewed on Aug. 20, 2008).
At head of title: Mineral Resources Program.
"September 2002."
Electronic resource.
Physical Description:2 unnumbered pages : digital, PDF file.
Format:Mode of access: Internet from the USGS web site. Address as of 8/20/08: http://pubs.usgs.gov/fs/fs-0071-02/FS-071-02-508.pdf ; current access available via PURL.
Bibliography:Includes bibliographical references (page [2]).