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Page 6193, results 154801 - 154825

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Publication Extents

Not all publications have extents, not all extents are completely accurate
On the air-scattering of gamma rays from thick uranium sources
Arthur Y. Sakakura
1955, Trace Elements Investigations 595
Semiquantative interpretation of data from airborne radioactivity surveying requires detailed knowledge of air-scattered gamma-ray intensity at considerable air distances from natural, thick uranium sources. Based on the concept of an elementary source of infinite thickness rather than on the classical point source, semi-empirical expressions, are developed for measured gamma-radiation intensities from . the...
Reconnaissance examination of the uranium deposits northeast of Winston, Broadwater County, Montana
George E. Becraft
1955, Trace Elements Memorandum 917
Anomalous radioactivity and a yellow secondary uranium mineral tentatively identified as carnotite have been found in Tertiary sedimentary rocks about 3 miles northeast of Winston, Mont. The uranium is in tuffs and tuffaceous shales and particularly in beds rich in organic matter. Carnotite(?) was identified from three localities, principally coating...
Uranium deposits of the northern part of the Boulder Batholith, Montana
George E. Becraft
1955, Trace Elements Memorandum 944
Uranium minerals and radioactivity anomalies occur in many silver-lead veins and chalcedony veins and vein zones in the Boulder batholith of southwestern Montanao Pitchblende has been identified in a few silver-lead veins. These veins occupy shear zones along which there is no evidence of large-scale lateral displacement. The wall rock...
Zinc and lead deposits of the Sinsinawa River area, Grant County, Wisconsin
John W. Allingham, Arthur E. Flint, Allen F. Agnew
1955, Miscellaneous Field Studies Map 40
A broad geologic study of the structure and ore deposits of the Wisconsin-Illinois-Iowa zinc-lead district (fig. 1) was begun by the U.S. Geological Survey in 1942.  The main object of the present program is to delineate the areas favorable to future exploration for zinc-lead ore deposits.  As part of the...
Geology and zinc-lead deposits in the Durango area, Dubuque County, Iowa
Arthur E. Flint, C. Erwin Brown
1955, Miscellaneous Field Studies Map 33
Geologic investigations were begun in Iowa to appraise; (1) the possible occurrence of zinc ore in strata that elsewhere in the Upper Mississippi Valley zinc-lead district have been the principal sites of zinc concentration; and (2) lead ore of the type known as "crevice deposits," which were mined so extensively...
Geology and zinc-lead deposits in the Couler Valley area, Dubuque County, Iowa
C. Erwin Brown, L.G. Collins, Percy Crosby
1955, Miscellaneous Field Studies Map 42
Geologic investigations were begun in the Iowa portion of the Wisconsin-Illinois-Iowa zinc-lead district to appraise its potentialities: (1) for zinc ore in strata that elsewhere in the mining district contain large zinc ore bodies and (2) for lead and zinc deposits of the type that were mined extensively in Dubuque...
Geologic map of the Triangle A pegmatite, Custer County, South Dakota
A.J. Lang Jr.
1955, Miscellaneous Field Studies Map 44
The Triangle A pegmatite is 4 miles southeast of Custer in the SW 1/4, sec. 34, T. 3 S., R. 5 E., Custer County, S. Dak.  It may be reached from Custer by a gravel road 2.4 miles long that leaves U.S. Highway 16A at a point 3.2 miles east...