Geology and fluorspar deposits, Northgate district, Colorado / by Thomas A. Steven.
- Physical Description: 1 online resource (v, 323-422 pages, 4 pages of plates) : illustrations, maps.
- Publisher: Washington, D.C. : United States Department of the Interior, Geological Survey, 1960.
- Distributor: Washington, D.C. : Government Printing Office
|General Note:|| "Prepared in cooperation with the Colorado State Geological Survey Board and the Colorado Metal Mining Fund Board."
Title from title screen (viewed July 23, 2014).
|Bibliography, etc. Note:|| Includes bibliographical references (pages 417-420) and index.
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