Economic geology of Gilpin County and adjacent parts of Clear Creek and Boulder Counties, Colorado
By: by Edson S. Bastin and James M. Hill.
Contributors: Hill, James M. 1884-
Series: Geological Survey professional paper -- 94
Publisher: Govt. Print. Off.
Published: 1917
Place of publication: Washington
Language: eng
Number of pages: 379
Subjects: Geology, Economic -- Colorado.; Ores -- Colorado.; Ore deposits -- Colorado.; Mines and mineral resources -- Colorado.; Physical geography -- Colorado.
Notes: Nine folded plates inserted in back.

Includes bibliographical references (p. 22) and index.
Table of contents: value: Part I. General geography and geology; value: Part II. General features of the economic geology; value: Part III. The mines.