Geology and Pegmatites of Part of the Fourmile Area, Custer County, South Dakota (open access)

Geology and Pegmatites of Part of the Fourmile Area, Custer County, South Dakota

Report discussing the descriptive geology of three new formations of metamorphic rocks and details of about 420 pegmatites in the Fourmile area of Custer County, South Dakota.
Date: March 1952
Creator: Lang, A. J., Jr. & Redden, J. A.
System: The UNT Digital Library
Laboratory Study of High-Grade Uranium-Bearing Lignite From Harding County, South Dakota (open access)

Laboratory Study of High-Grade Uranium-Bearing Lignite From Harding County, South Dakota

Report discussing a study of uraniferous lignite collected from three coal beds from Harding County, South Dakota. The report contains information regarding the location and geologic setting of the coal, the materials studies, coal petrologic studies, and a discussion of results.
Date: March 1956
Creator: Schopf, James M. & Gray, Ralph J.
System: The UNT Digital Library
Trace Elements Reconnaissance in South Dakota and Wyoming Preliminary Report (open access)

Trace Elements Reconnaissance in South Dakota and Wyoming Preliminary Report

The following report provides information that follows investigations of radioactivity in certain rocks found in Wyoming and South Dakota during the summer of 1945. Uranium is the principal element in this report with thorium as secondary.
Date: March 1946
Creator: Slaughter, A. L. & Nelson, John W.
System: The UNT Digital Library