Discussing the results of core drilling for uranium-bearing carbonaceous shale and lignite in the Goose Creek District, in Cassia County, Idaho

Report discussing a program of core drilling to explore the underground extent and grade of uranium-bearing carbonaceous shale and lignite beds in the Goose Creek district during August and September 1953.

From Abstract: "It is proposed that diffusion be considered as a possible process of isotope fractionation taking place throughout geologic time. Both diffusion in solids and in liquids are considered as possible mechanisms, the latter being more important. Arguments are presented which show that if significant fractionation takes place within a crystal by outward diffusion under solid state conditions, enrichment will be evident only in elements of minor concentration."

Report presenting new data on the age of the Boulder, Philipsburg, and Idaho batholiths of western Montana.

Report discussing the stratigraphy of uraniferous rocks discovered near Tordilla Hill in Karnes County, Texas. The report contains sections on the stratigraphy of the area, the structure, uranium minerals, descriptions of individual prospects, and a summary.

From abstract: The purpose of this preliminary electrical resistivity investigation of Holiday Mesa, Monument Valley region, San Juan County, Utah, was to determine the feasibility of a detailed survey to delineate channels cut into the Moenkopi formation and filled with sediments of Shinarump conglomerate. These structures are in many places related to the localization of uranium ore.

A report about how the U. S. Geological Survey explored the Atkinson Mesa area for uranium and vanadium bearing deposits from July 2, 1951, to June 18, 1953, with 397 diamond drill holes that totaled 261,251 feet.

From introduction: This report summarizes some of the results of U. S. Geological Survey investigations in the Club Mesa area and presents a compilation of available geologic data that would be helpful in future exploration. Detailed geologic logs of U. S. Geological Survey holes drilled in the Club Mesa area on public land that is no longer withdrawn from mineral entry are on open file for public inspection in the U. S. Geological Survey office, Grand Junction, Colorado.

A preliminary report on the geology of the phosphate deposits located in the Centennial Range in Montana and Idaho.

Report discussing an investigation of the Centennial Range of Montana and Idaho, and the phosphate deposits of this area. Information on the geology of the area and deposits are given as well as information regarding the quality and location of phosphate deposits.

Abstract: A reconnaissance was made of a large part of the Powder River Basin, Wyoming, during the summer of 1952 to search for uranium deposits in parts of the basin other than the Pumpkin Buttes area. No uranium deposits of economic interest were found, but some rocks of the Tertiary Fort Union formation and the Cretaceous Inyan Kara group were found to be sufficiently uraniferous to justify further search in rocks of these units. Analyses of samples of sandstones, baked shales, and siltstones taken during the reconnaissance show these rocks are considerably more vanadiferous than the average sandstone, or clay and shale.

Report discussing the geological details of uranium-bearing copper deposits in the Sangre de Cristo formation, located south of Coyote, Mora County, New Mexico.

Abstract: Uranium-bearing copper deposits occur in steeply dipping beds of the Sangre de Cristo formation of Pennsylvanian and Permian age south of Coyote, Mora County, N. Mex. Mapping and sampling of these deposits indicate that they occur in lenticular carbonaceous zones in shales and arkosic sandstones. Samples from these zones contain as much as 0.067 percent uranium and average 3 percent copper. Metatyuyamunite is disseminated in some of the arkosic sandstone beds, and uraninite was identified in some of the copper sulfide nodules occurring in the shale. In polished section these sulfide nodules were found to be composed principally of chalcocite with some bornite and covellite, as well as pyrite and malachite. Most of the samples were collected near the surface from the weathered zone. The copper and uranium were probably deposited with the sediments and concentrated into zones during compaction and lithification. Carbonaceous material in the Sangre de Cristo formation provided the environment that precipitated uranium and copper from mineral-charged connate waters forced from the clayey sediments.

From abstract: Two hundred and seventy-one prospect pits, mine dumps, or mine workings within the Sugar Loaf-St. Kevin mining districts and vicinity, were tested for radioactivity by the U. S. Geological Survey in 1951 during six weeks of investigation on behalf of the Division of Raw Materials of the U. S. Atomic Energy Commission. One hundred and twenty-two weak radioactivity anomalies were found in the St. Kevin district and vicinity, and eight slight anomalies were noted in"-the Sugar Loaf district, which adjoins the St. Kevin district on the south, Most of the radioactivity anomalies were found in igneous and metamorphic rocks of pre=Cambrian age, but some were found in metalliferous veins of Tertiary age.

A report regarding exploration for uranium deposits in the Atkinson Mesa area, Montrose County, Colorado. Concerns work done on behalf of the division of Raw Materials of the U.S. Atomic Energy Commission.

Report summarizing the results of geological exploration of the Atkinson Mesa area of Montrose County, Colorado and contains a brief description of the area's geology and ore deposits.

A report regarding physical exploration for uranium in the Silver Reef District, in Washington County, Utah.

Report discussing drilling in the Silver Reef district, which was supervised by the U.S. Geological Survey and aimed at locating suitable areas for commercial development of uranium deposits.

Report presenting the results of core drilling in Sweetwater county, Wyoming aimed at finding uraniferous coal. Information regarding the locations that were drilled, progress made in drilling, geology of the area, reserves of uraniferous coal, and future plans are included.

A report discussing the results of exploratory core drilling for uranium-bearing coal in the Northern Part of the Red Desert Area, in Sweetwater County, Wyoming.

Report discussing a geological examination to find uranium deposits in the Colorado Front Range and adjacent areas from 1947-1951. "The investigations consisted chiefly of spot-checking mine dumps, outcrops, and road cuts, and included examination of stream beds, mill tailing ponds, and radioactivity traversing of selected surface areas, and mine workings."

A report regarding reconnaissance investigations for uranium in the Colorado Front Range and Adjacent Areas.