Reconnaissance for radioactive deposits in the Hyder district, southeastern Alaska, 1949

Trace Elements Investigations 73
This report concerns work done on behalf of the Division of Raw Materials of the U.S. Atomic Energy Commission
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Radioactivity reconnaissance during 1949 in the Hyder district, southeastern Alaska, revealed that radioactive material is widely distributed on the Mountain View property. However, no uranium deposits of commercial value were found in the restricted parts of the district covered by this investigation.

Anomalous radioactivity was detected at a number of localities on the Mountain View property, but the source could not be determined at all sites. The most highly radioactive unconcentrated vein sample collected Sn 1949 contained 0.049 percent equivalent uranium, and the most Intensely radioactive vein-material concentrate (specific gravity greater than 2.89) contained 0.398 percent equivalent uranium. Both samples are from the Skookum tunnel on the Mountain View property.

The radioactive material on the properties Investigated in the Hyder district appears to be chiefly uranium which occurs In an unidentified, highly radioactive, opaque mineral and, also, in trace amounts in the sulfides of the vein deposits. Some of the radioactive material, however, occurs as disseminated deposits In the Igneous rocks of the district and, also, to a minor extent as thin secondary coatings on fracture surfaces in veins and rocks.

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Publication type Report
Publication Subtype USGS Numbered Series
Title Reconnaissance for radioactive deposits in the Hyder district, southeastern Alaska, 1949
Series title Trace Elements Investigations
Series number 73
DOI 10.3133/tei73
Year Published 1954
Language English
Publisher U.S. Geological Survey
Description Report: 25 p.; 3 Plates: 16.69 x 18.52 inches and smaller
Time Range Start 1949-01-01
Time Range End 1949-12-31
Country United States
State Alaska
Other Geospatial Hyder District
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