Holdings: Alkalic rocks and resources of thorium and associated elements in the Powderhorn District, Gunnison County, Colorado

Main Author:	Olson, J. C. 1917-2013.
Other Authors:	Hedlund, David Carl, 1924-
Format:	Book
Language:	English
Published:	Washington : U.S. Govt. Print. Off. : For sale by the Supt. of Docs., 1981.
Physical Description:	iv, 34 pages : illustrations ; 29 cm.
Series:	Geology and resources of thorium in the United States. Geological Survey professional paper ; 1049-C.
Subjects:	Alkalic igneous rocks. Intrusions (Geology) -- Colorado -- Gunnison County. Thorium ores -- Colorado -- Gunnison County.