Thirty-six color photomicrographs of thin sections of selected rock samples collected for analysis from the Copper Mountain District of central Wyoming.

"This report presents the results of Multidisciplinary investigations of uranium deposits in the Copper Mountain District of central Wyoming."

Appendix containing statistical summary of geochemical data from stream sediment, ground and surface water samples in the Newcastle quadrangle to accompany a report on U.S. uranium resources in Wyoming in South Dakota.

Appendix containing uranium occurrence reports in the Newcastle quadrangle to accompany a report on U.S. uranium resources in Wyoming and South Dakota.

Appendix containing field data and chemical analyses of stream sediment samples collected from outcrop areas of the Newcastle quadrangle.

Appendix containing data on gamma ray anomalies in oil and gas test wells to accompany a report on U.S. uranium resources in Wyoming and South Dakota.

Appendix containing data on uranium occurrences in the Newcastle quadrangle to accompany a report on U.S. uranium resources in Wyoming and South Dakota.

Appendix containing tabulated rock sample analyses of the Newcastle quadrangle to accompany a report on U.S. uranium resources in Wyoming and South Dakota.

Appendix containing field data and chemical analyses of ground and surface water samples of the Newcastle quadrangle to accompany a report of U.S. uranium resources in Wyoming and South Dakota.

Uranium resources of the Newcastle 1°x2° Quadrangle, Wyoming and South Dakota were evaluated to a depth of 1,500 m (5000 ft) using available surface and subsurface geologic information. Many of the uranium occurrences reported in the literature and in reports of the U.S. Atomic Energy Commission were located, sampled and described. Areas of anomalous radioactivity, interpreted from an aerial radiometric survey, were outlined. Areas favorable for uranium deposits in the subsurface were evaluated using gamma-ray logs. Based on surface and subsurface data, two areas have been delineated which are underlain by rocks deemed favorable as hosts for uranium deposits. One of these is underlain by rocks that contain fluvial arkosic facies in the Wasatch and Fort Union Formations of Tertiary age; the other is underlain by rocks containing fluvial quartzose sandstone facies of the Inyan Kara Group of Early Cretaceous age. Unfavorable environments characterize all rock units of Tertiary age above the Wasatch Formation, all rock units of Cretaceous age above the Inyan Kara Group, and most rock units of Mesozoic and Paleozoic age below the Inyan Kara Group. Unfavorable environments characterize all rock units of Cretaceous age above the Inyan Kara Group, and all rock units of Mesozoic and …

Uranium resources of the Newcastle 1°x2° Quadrangle, Wyoming and South Dakota were evaluated to a depth of 1,500 m (5000 ft) using available surface and subsurface geologic information. Many of the uranium occurrences reported in the literature and in reports of the U.S. Atomic Energy Commission were located, sampled and described. Areas of anomalous radioactivity, interpreted from an aerial radiometric survey, were outlined. Areas favorable for uranium deposits in the subsurface were evaluated using gamma-ray logs. Based on surface and subsurface data, two areas have been delineated which are underlain by rocks deemed favorable as hosts for uranium deposits. One of these is underlain by rocks that contain fluvial arkosic facies in the Wasatch and Fort Union Formations of Tertiary age; the other is underlain by rocks containing fluvial quartzose sandstone facies of the Inyan Kara Group of Early Cretaceous age. Unfavorable environments characterize all rock units of Tertiary age above the Wasatch Formation, all rock units of Cretaceous age above the Inyan Kara Group, and most rock units of Mesozoic and Paleozoic age below the Inyan Kara Group. Unfavorable environments characterize all rock units of Cretaceous age above the Inyan Kara Group, and all rock units of Mesozoic and …

Appendices containing data on uranium availability in the Ashton Quadrangle to accompany a report on U.S. uranium resources in Idaho, Montana, and Wyoming.

Appendices containing data on uranium availability in the Torrington Quadrangle to accompany a report on U.S. uranium resources in Wyoming and Nebraska.

Appendices containing data on uranium resources in the Gillette Quadrangle to accompany a report on U.S. uranium resources in Wyoming, South Dakota, and Montana.

Appendices containing data on uranium availability in the Thermopolis Quadrangle to accompany a report on U.S. uranium resources in Wyoming.

Appendices containing supplementary data on uranium occurrences in the Lander Quadrangle in addition to a table of chemical analyses, a well list, and petrology reports to accompany a report on U.S. uranium resources in Wyoming.

Appendices containing data on uranium availability in the Cody Quadrangle to accompany a report on U.S. uranium resources in Wyoming.

Appendices containing data on uranium availability in the Casper Quadrangle to accompany a report on U.S. uranium resources in Wyoming.

Appendices containing data on uranium availability in the Arminto Quadrangle to accompany a report on U.S. uranium resources in Wyoming.

Appendices containing data on uranium occurrences in the Rawlins Quadrangle in addition to emission spectroscopy results, electric and gamma-ray logs, lithologic logs and petrology reports to accompany a report on U.S. uranium resources in Wyoming and Colorado.

Appendices containing supplementary data on uranium availability in the Sheridan Quadrangle, in addition to petrology reports and test well reports to accompany a report on U.S. uranium reports in Wyoming and Montana.

From Introduction: "The Sheridan NTMS 1º by 2º Quadrangle (Fig. 1) in north-central Wyoming was evaluated to identify geologic environments that have characteristics favorable for uranium deposition. Only environments to a depth of 1500 m have been evaluated for this project."

From Introduction: "The Cody NTMS Quadrangle, Wyoming, was evaluated to identify and delineate environments, rock units, and geographic areas that exhibit characteristics favorable for the occurrence of uranium deposits."

From Purpose and Scope: "The Gillette 1º x 2º Quadrangle, Wyoming, and South Dakota was evaluated to find volumes of rock considered favorable for uranium deposits and which could contain at least at 100 mt tons U3O8 with an average grade of 0.01 percent U3O8 or more. All geologic environments to a depth of 1,500 m (5,000 ft) evaluated through the use of surface investigations and subsurface information."