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Publication Extents

Not all publications have extents, not all extents are completely accurate
Reconnaissance for radioactive deposits in the lower Yukon-Kuskokwim Highlands region, Alaska
M.G. White, P.L. Killeen
1953, Circular 255
Investigations in 1947 in the Lower Yukon-Kuskokwim region, Alaska found that previously reported radioactivity in the vicinity of Flat is due to uraniferous zircon, an accessory mineral in monzonite. The monzonite intrudes mafic igneous and Upper Cretaceous sedimentary rocks. The maximum equivalent-uranium content of the zircon is 0.14 percent, and...
Niobium (columbium) and titanium at Magnet Cove and Potash Sulphur Springs, Arkansas
Verne Charles Fryklund Jr., R. S. Harner, E.P. Kaiser
1953, Open-File Report 53-74
This work was done because niobium (columbium) has been found in several of the minerals and rocks of the Magnet Cove and Potash Sulphur Springs areas. Niobium is in demand for use in high-temperature and non-creep steels.The Magnet Cove and Potash Sulphur Springs areas are in central Arkansas between Malvern...
Geologic map of Lake Valley manganese district, Sierra County, New Mexico
S.C. Creasey, A.E. Granger
1953, Miscellaneous Field Studies Map 9
The Lake Valley district was originally developed as a manganese-silver district, but the known silver-bearing ore bodies have long since been worked out.  The critical shortage of manganese during World War II renewed interest in the manganese deposits; from October 1941 through June 1942 the U. S. Geological Survey and...
Uranium in the metal-mining districts of Colorado
Robert Ugstad King, B. F. Leonard, F. B. Moore, C. T. Pierson
1953, Circular 215
Many varieties of abnormally radioactive rocks and ores have been found in Colorado as a result of more than eight years of geologic studies by the U. S. Geological Survey, but only a small proportion of these contain uranium in sufficient quantities to be of possible commercial interest....
Reconnaissance geology of placer deposits containing radioactive minerals in the Bear Valley district, Valley County, Idaho
J. Hoover Mackin, Dwight Lyman Schmidt
1953, Open-File Report 53-167
A reconnaissance of the Bear Valley district was undertaken to provide a geologic interpretation of placer deposits drilled by the U.S. Bureau of Mines. The placer minerals are monazite and a group of uranium bearing rare earth columbates and tantalates here referred to loosely as radioactive blacks. The monazite is...