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Beryllium Deposits of the Mount Antero Region, Chaffee County, Colorado
Report discussing the possible existence of pegmatites containing beryllium deposits in the granite stock in the vicinity of Mount Antero and White Mountain, Chaffee County, Colorado.
Wall-Rock Control of Certain Pitchblende Deposits in Golden Gate Canyon, Jefferson County, Colorado
Report discussing a geological study of the Union Pacific prospect near the Golden Canyon in Jefferson County, Colorado.
Geophysical Data on the Climax Stock, Nevada Test Site, Nye County, Nevada
The following report covers the study of a small composite stock at Oak Spring, Nevada, known as Climax granite to study the seismic effect of a deep nuclear explosion contained in a large volume of unfractured rock.
Summary of Work on the Mineralogy and Petrography of Southeast Phosphates Through April 1952
From abstract: "In this report the mineralogy and uranium contents of southeast phosphates are discussed with reference to the lithologic units of the Hawthorn and Bone Valley formations and to waste slimes. In addition, the immediate problem of sampling leached-zone rock for process development studies is discussed and plans for future work (fiscal 1953) are presented."
The Geochemistry of Uranium in Apatite and Phosphorite
The following report is preliminary in nature, discussing and analyzing traces of uranium in apatite and phosphorite.
Carnotite Resources of San Miguel Bench, Montrose County, Colorado
Report discussing the San Miguel bench and the production of carnotite from deposits consisting of sandstone with uranium- and vanadium-bearing minerals.
Carnotite Resources of San Miguel Bench, Montrose County, Colorado
Abstract: San Miguel bench includes about 4 square miles in the southern part of T. 48 N., R. 17 W., New Mexico principal meridian, Montrose County, Colorado. Production of carnotite ore from the area has been about 15, 000 short tons having an estimated average graderof 0. 31 percent U3O8,and 1. 6 percent V2 05 Nearly all of the carnotite deposits occur in a single-continuous sandstone bed near the top of the Salt Wash member of the Jurassic Morrison formation. These deposits consist chiefly of sandstone impregnated with uranium- and vanadium-bearing minerals. They are irregular tabular-shaped masses ranging in size from a few short tons to 30, 000 short tons or more of minable carnotite ore. During the period November 27, 1951, to April 17, 1953, the U. S. Geological Survey drilled 309 holes totaling 92, 194 feet on the San Miguel bench. Reserves total about 43, 000 short tons of material 1 foot or more thick and contain 0,.10 percent or more U30 or 1. 0 percent or more V205. Of these reserves 3, 300 short tons occur in private land. These reserves are in ten deposits found by Geological Survey drilling. Potential reserves (reserves based on geologic evidence only) are predicted to total about 15, 000 short tons, averaging 0.30 percent U308 and 1.6 percent V2 05 No additional exploration drilling in the San Miguel bench is planned by the Geological Survey. Some drilling by private enterprise is recommended.
Reconnaissance of Some Geologic Formations in Southeastern Idaho, Western Wyoming, and Northern Utah
Abstract: A radiometric reconnaissance, using a portable beta-gamma survey meter, of some geologic formations ranging in age from Cambrian to Cretaceous, and springs in southeastern Idaho, western Wyoming, and northern Utah, has shown that none of them are sufficiently radioactive to warrant further examination of them in the area.
Controlled Atmospheres for Spectrochemical Analysis
The following report describes preliminary investigations on the use of controlled atmospheres, discussing the method of semiquantitative spectrographic analysis used in conjunction with the final gas jet design.
Relationship of Carbonate Cement to Lithology and Vanadium-Uranium Deposits in the Morrison Formation in Southwestern Colorado
Report discussing a study on the connection between carbonate content of samples from the Salt Wash member of the Morrison formation and the lithology and vanadium-uranium deposits in the area.
Uranium-bearing minerals in Placer Deposits of the Red River Valley, Elk City District, Idaho County, Idaho
A report about uranium bearing multiple oxide minerals first recognized in the jig-bed concentrate of the Tyee Mining Company's gold dredge on the Red River. The gravels of the placer deposits were derived from the Idaho batholith and a roof pendant of Precambrian rocks in the batholith.
Uranium-Bearing Minerals in Placer Deposits of the Red River Valley, Elk City District, Idaho County, Idaho
From introduction: This report details the study to determine whether it might be worthwhile to attempt to recover uranium-bearing minerals that were previously dredged in a gold exploration in 1951 and discarded.
An Apparatus for the Study of Thermoluminescence from Minerals
This report discusses an apparatus that has been constructed to record the thermoluminescence of a mineral in the form of a powder or a single crystal at temperatures from -100 C to +400 C.
Reconnaissance for Uranium-Bearing Carbonaceous Rocks in New Mexico, 1952
Abstract: Reconnaissance for uranium in coal and black shale in New Mexico during 1952 was largely an extension of work initiated during the 1951 field season. No uranium deposits of economic interest were found, although minor amounts of uranium were noted at several localities.
Reconnaissance of Geology and Uranium Occurrences of the Upper Alamosa Creek Valley : Catron County, New Mexico
From abstract: "The Crevasse Canyon formation and Point Lookout(?) sandstone of Late Cretaceous age and the Baca and Datil formations of Tertiary age were mapped in an area of 168 square miles in the upper Alamosa Creek Valley along the northern edge of the Datil Mountains, Catron County, N. Mex. The investigation was made to determine the potentialities of the area for producing uranium and to learn the geologic controls for the concentration of uranium."
Distribution and Thickness of Salt in the Paradox Basin of Southwestern Colorado and Southeastern Utah, A Preliminary Report
The following report covers investigation work done on the distribution of thick deposits of salt that had occurred in the Paradox member of the Hermosa formation of Pennsylvanian age in an area nearly 12,000 square miles of southwestern Colorado and southeastern Utah.
Spectrographic Determination of Contamination of Rock Samples After Grinding With Alumina Ceramic
Report discussing a spectrographic determination of contamination in rock samples that had been pulverized with heavy grinding machinery made of alumina ceramic.
Synthesis and Properties of Carnotite and its Alkali Analogues
A report which records the results of experiments dealing with the synthesis of carnotite and its alkali analogues. The work was primarily concerned with the preparation of single crystals suitable for detailed structural analysis, though some insight into the chemistry of the precipitation of carnotite was obtained.
Preliminary Report on the Clancy Creek Area, Jefferson City Quadrangle, Jefferson County, Montana
Report discussing the results of geological studies that have been conducted in the Clancy Creek in the Jefferson City Quadrangle of Jefferson County, Montana. The location is of interest due to the discovery of several radioactivity anomalies and secondary uranium minerals in the area.
Preliminary Report on the Comet Area, Jefferson City Quadrangle, Jefferson County, Montana
Report describing the geology and structural features of the Comet area of Jefferson County, Montana.
Uranium in Carbonaceous Rocks in the Townsend and Helena Valleys, Montana
Report discussing uranium occurrences in carbonaceous shale and lignite beds in areas of the Townsend and Helena Valleys in Montana.
Preliminary Report on the Rimini Area, Jefferson City Quadrangle, Jefferson County and Lewis and Clark County, Montana
Abstract: A number of radioactivity anomalies and secondary uranium minerals have been found in the Rimini area near the northwestern margin of the Boulder batholith. Most of the anomalies are associated with chalcedonic vein zones that consist of one or more veins of cryptocrystalline and fine-grained quartz in silicified quartz monzonite and alaskite. Seventeen of the anomalies were found along veins that contain base and precious metals; nine were along veins in the vicinity of the village of Rimini from which there has been production of lead, silver, zinc, and gold.
Geology of the Powder River Basin, Wyoming and Montana with Reference to Subsurface Disposal of Radioactive Wastes
From introduction: This report on the geology of the Powder River Basin is one of a series of reports by the Geological Survey on sedimentary basins in the United States.
Carnotite Resources of the Legin Group Area, San Miguel County, Colorado
From abstract: The Legin group area comprises five privately owned claims, nine Government claims, and some public land. The area is in parts of secs. 28 and 29, T. 43 N., R. 19 W., New Mexico principal meridian, San Miguel County, Colo. It is about 45 miles from the Government mill at Monticello, Utah, and 50 miles from the Vanadium Corporation of America mill at Naturita, Colo. The Legin group area has yielded a total production of more than 18,000 short tons of carnotite ore that averaged 0.32 percent U30 and 2.5 percent V 205 . Most of this production was accomplished during the years from 1935 to 1944, and from 1949 to October 1951.
Carnotite Resources of the Spud Patch Area, San Miguel County, Colorado
Report discussing the geography and ores of the Spud patch area, which acted as a source of carnotite ore from deposits in a sandstone lens.
Uranium Deposits in Fall River County, South Dakota
Report discussing uranium deposits containing carnotite in the southern Black Hills near Edgemont, Fall River County, South Dakota.
Semi-Quantitative Determination of Uranium and Stratigraphic Correlation by Gamma-Ray Logging of Drill Holes in Carnotite Deposits
Report discussing a geological experiment in which drill holes in carnotite deposits were logged with the objective of developing a technique for the stratigraphic correlation of ore-bearing beds.
Uranium in Petroleum and Rock Asphalt
The following report summarizes briefly current knowledge of the association of uranium with petroleum and asphalts and presents analytical data compiled during the course of investigations by the U.S. Geological Survey on behalf of the Division of Raw Materials, U.S. Atomic Energy Commission. The primary concern of this paper is focused on uranium and petroleum and natural asphalts.
Petrographic Study of Sandstone of the Inyan Kara Group (Cretaceous) and Associated Rocks in the Black Hills, Wyoming and South Dakota
The following report covers the Petrographic study of Early Cretaceous age sandstone beds in the Fall River formation and the Fuson-Lakota formations, as well as Late Jurassic age beds in the underlying Unkpapa and Morrison formations along the western side of the Black Hills.
Stratigraphy of Parts of De Soto and Hardee Counties, Florida
Report presenting the results of one part of an investigation of the regional geology of central Florida.
Uranium Deposits of the Carlile Quadrangle Crook County, Wyoming
The following report presents a generalized description of the uranium deposits discovered in the northern Black Hills.
Uranium Deposits of the Carlile Quadrangle, Crook County, Wyoming
From abstract: The uranium deposits in the Carlile quadrangle, southwestern Crook County, Wyo., are in relatively flat-lying sandstone beds in the lower part of the Inyan Kara group of Early Cretaceous age. The Carlile mine has the largest deposit in the quadrangle; the ore minerals are carnotite and tyuyamunite associated with carbonaceous material in a sandstone lens.
A Mineralogic Study of Churn Drill Cuttings From a Well Through the Bone Valley Formation, Hillsborough County, Florida
From Abstract: "The mineral constituents of churn drill cuttings from a well through the Bone Valley formation and into the Hawthorn formation were determined. The weight percent of each mineral is given, as well as a description of the samples and the methods used."
A Nomogram for Obtaining Percent Composition by Weight From Mineral-Grain Counts
Report describing a nomogram for calculating percent composition from mineral-grain counts. From abstract: "A nomogram for calculating percent composition from mineral-grain counts reduces several of the more tedious arithmetical operations to two mechanical ones."
Some Physical Properties of Naturally Irradiated Fluorite
A report about five sample of purple fluorite found in association with radioactive materials, and a synthetic colorless control sample which were studies and compared.
Reconnaissance for Uraniferous Lignites in North Dakota, South Dakota, Montana, and Wyoming
From introduction: This report details the reconnaissance for uraniferous lignites in North Dakota, South Dakota, Montana, and Wyoming during 1948 and 1949.
Reconnaissance for Uraniferous Rocks in Northwestern Colorado, Southwestern Wyoming, and Northeastern Utah
Report discussing the reconnaissance for radioactive uraniferous rocks in parts of Colorado, Wyoming, and Utah. Regional geology of each area, results of regional reconnaissance, and miscellaneous prospects are included.
Reconnaissance for Uraniferous Rocks in Northwestern Colorado, Southwestern Wyoming, and Northeastern Utah
The following report covers a reconnaissance for new discoveries of radioactive lignite deposits in the Green River Basin and Uinta Basin of Wyoming and Utah where similar discoveries to previous studies in North Dakota, South Dakota, Montana, and Wyoming were made. Additionally, there were new prospects examined, as well as reconnaissance for uranium deposits.
Reconnaissance for Uraniferous Lignites in North Dakota, South Dakota, Montana, and Wyoming
Report discussing a geological study performed to find uraniferous lignites in North Dakota, Eastern Montana, north-central Wyoming, and northwestern South Dakota. "Deposits of uraniferous lignites were discovered at Blue Buttes, eastern Montana; and at North Cave Hills, South Cave Hills, and at Slim Buttes in northwestern South Dakota."
A Magnetic Investigation of the Round Mountain Plug, Castle Valley, Grand County, Utah
Report discussing a magnetic survey of Castle Valley, Utah aimed at determining how the Round Mountain plug was fed. The location and topography of the area, geology, magnetic investigations, and conclusions are discussed.
Exploration for Uranium-Vanadium Deposits in Long Park and Adjacent Areas in the Southern Part of the Uravan District, Montrose County, Colorado
A report pertaining to an exploration by the U.S. Geologic Survey in the southern part of the Uravan district for uranium-vanadium deposits. The explored area is in Montrose County, Colorado. The rocks exposed in the area are gently dripping marine and terrestial formations ranging in age from late Paleozoic to late Mesozoic.
Mineralogy and Geology of the Vanadium-Uranium Deposit of the Rifle and Garfield Mines, Garfield County, Colorado
A report about the vanadium-uranium deposit at the Rifle and Garfield mines which lies in the Wingate sandstone and the overlying Entrada sandstone.
Outline of the Geology of the U12i and the U12i.01 Tunnels and Lithology of the U12i.01 Drill Hole, Nevada Test Site
The following report summarizes descriptive geological and lithological data for the U12i tunnel system in the Nevada test site.
Change of the Isotopic Abundance Ratio Within a Sphere Due to Diffusion
Report explaining the theory behind diffusion's effects on isotopic abundance ratios in a sphere.
The Stratigraphic and Structural Controls of the Uranium Deposits on Long Mountain, Fall River County, South Dakota
Report discussing the stratigraphy and structure of uranium deposits that were discovered in the Long Mountain area, Fall River County, South Dakota. The report is divided into "Stratigraphy", "Structure", "Ore deposits", and "Suggestions for prospecting".
Carnotite Resources of Outlaw Mesa, Mesa County, Colorado
Report discussing the U.S. Geological Survey's exploration from 1949 to 1951 of carnotite deposits in Outlaw Mesa, Colorado.
Mineralogy and Geochemistry of a Uraniferous Coal From the Red Desert Area, Sweetwater County, Wyoming
Report discussing the investigation of the mineralogy and geochemistry of some subbituminous uraniferous coal from the Red Desert area of Sweetwater County, Wyoming. Data and discussion from the mineralogic and geochemical studies, Fischer retort assays of a coal sample, and summary and conclusions are included.
Preliminary Studies of Coalified Wood Associated with Uranium on the Colorado Plateau
The following report summarizes studies carried out to see what the nature is of the coalified plant debris, uraniferous and nonuraniferous, that occurs in the Colorado Plateu, and if any relationships can be recognized between uranium and other elements of or associated with the coalified plant debris.
The Association of Uranium with Carbonaceous Materials on the Colorado Plateau
A report about uranium on the Colorado Plateau which is related to coalified wood, crude oil, carbonaceous shale, and carbonaceous matter of unknown origin.
Status of Investigations on the Geochemistry and Mineralogy of Uraniferous Lignites
Report discussing studies regarding uraniferous lignite from the Mendenhall strip mine in Harding County. The geochemical and mineralogical properties of lignite was analyzed and discussed.