Technical Report Archive & Image Library (TRAIL) - 109 Matching Results
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- Beryllium Minerals in the Victorio Mountains, Luna County, New Mexico
- Report discussing beryllium deposits in the form of beryl, helvite, and beryllian idocrase in a small area of the Victorio Mountains of Luna County, New Mexico.
- Carnotite Resources of Club Mesa, Montrose County, Colorado
- Report discussing the U.S. Geological Survey's investigation of carnotite deposits found at Club Mesa, Colorado.
- 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.
- Carnotite resources of Outlaw Mesa, Mesa County, Colorado
- A report regarding carnotite resources of Outlaw Mesa, Mesa County, Colorado.
- 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.
- The Colorimetric Determination of Total Iron With O-Phenanthroline
- From Abstract: "A study of the critical factors in the colorimetric determination of total iron in silicate and phosphate rocks, and in other nonmetallic materials is presented. It was desired to ascertain the wavelength of maximum absorbancy, the optimum concentration range for iron, the effect of different substances on the ferrous-o-phenanthroline system, and reproducibility of results."
- Compilation of Data on the Uranium and Equivalent Uranium Content of Samples Analyzed by U.S. Geological Survey During a Program of Sampling Mine, Mill, and Smelter Products
- Report discussing the sources of about 1,400 samples of samples of mine, mill, and smelter products that were collected by the U.S. Geological Survey. In addition, the "kind of material sampled, i.e. ores, concentrates, middlings, tailings, flue dusts, and so forth, and the radioactivity of the samples are listed in the report."
- Contamination of Rock Samples During Grinding as Determined Spectrographically
- A report which investigates three different rock samples that have been contaminated through pulverization in heavy machinery.
- The Determination of Small Amounts of Rare Earths in Phosphate Rocks
- Report discussing a study regarding methods for extracting rare earths and thorium from phosphate rock samples.
- Distribution and Origin of Phosphate in the Land-Pebble Phosphate District of Florida
- From abstract: The land-pebble phosphate district of Florida is a part of the Gulf Coastal Plain. The geologic formations cropping out in the district are the Miocene Hawthorn, Pliocene Bone Valley, and Pleistocene terrace sands. The Bone Valley formation consists of a lower strongly phosphatic unit and an upper less phosphatic unit. This paper is concerned principally with the lower unit, which contains the bulk of the minable phosphate deposits of the district.
- Distribution and Origin of Phosphate in the Land-Pebble Phosphate District of Florida
- Report discussing the distribution, composition, and origin of the phosphate deposits in the land-pebble district in the Gulf Coastal Plain of Florida.
- Distribution of Ore Deposits and Spectrographic Analyses of Some Rocks and Ores on the Colorado Plateau
- Report discussing an investigation of rocks and ores found on the Colorado Plateau. These studies were conducted in order to determine distribution of elements and the various relationships of ore deposits and igneous rocks.
- Domestic Phosphate Deposits
- From abstract: Incomplete but recently partly revised estimates indicate the presence of about 10 billion tons of phosphate deposits in the Urited States that is minable under present economic conditions. Deposits too lean in quality or thickness to compete with those in the western and southeastern fields probably contain tens of billions of tons.
- The Effect of Ashing Temperatures on the Volatility of Germanium in Lignite Samples
- Abstract: A study has been conducted to provide data on the loss of germanium from ashed lignite samples. The lignite samples, of known germanium content, were ashed at various temperatures as high as 1000 °C with varying rates of heating and varying amounts of surface area of the lignites. The results indicate that no germanium was volatilized during the various ignitions.
- The Fluorimetric Determination of Uranium in Nonsaline and Saline Waters
- Report describing a fluorimetric procedure for determining about 10^-8 percent uranium with 500-ml water samples.
- Geologic map and structure sections of the Johnson Creek quadrangle, Caribou County, Idaho
- Geologic maps and structure sections of the Johnson Creek Quadrangle in Caribou County, Idaho. This report concerns work done on behalf of the Division of Raw Materials of the U.S. Atomic Energy Commission.
- The Geological Survey's Work on Development of Prospecting Tools, Instruments, and Techniques
- Report discussing the U.S. Geological Survey's efforts to develop "equipment and techniques for rapid field measurement of radioactivity, principally portable survey counters, carborne and airborne equipment, and gamma-ray logging equipment."
- Geological Survey's Work on Isotope Geology of Uranium, Thorium, and Their Decay Products
- Report discussing a research program on the isotope geology of the uranium and thorium series. From Abstract: "Work is in progress on uranium-lead relationships in uranium ores of the Colorado Plateau region; on uranium-thorium-lead relationships in granite; on geologic variations in the isotopic composition of lead; and on radon and helium in natural gas."
- The Geological Survey's Work on the Geology of Uranium and Thorium Deposits
- From abstract: The Geological Survey has been studying the geology of uranium and thorium continuously since 1939, when it began a comprehensive investigation of the vanadium-uranium deposits of the Colorado Plateau. Greatly increased demand for uranium arising from the advent of controlled fission in 1942 resulted in widening of the study in 1944 to include other possible sources and in further expansion on behalf of the U. S. Atomic Energy Commission since 1947. The wide variety of materials investigated in this study are embraced by five somewhat arbitrary groups of related types of deposits as follows: (1) Igneous rocks, pegmatites, veins, and related deposits; (2) Deposits in sandstone of carnotite, copper-uranium, and other minerals; (3) Other consolidated sedimentary rocks; (4) Placers; and (5) Natural fluids.
- 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.
- Geology of the Copper King Mine Area, Prairie Divide, Larimer County, Colorado
- Report discussing the geology of the Copper King mine area, which was worked for uranium following the discovery of pitchblende. The geology of the site is described as well as the history of the area's production.
- Geology of the Copper King Mine area, Prairie Divide, Larimer County, Colorado
- "This report, prepared principally to aid in the interpretation of the core drilling, presents the principal results of the field and preliminary laboratory work by the U.S. Geological Survey; it does not contain information obtained from the core drilling."
- The Geology of the Florida Land-Pebble Phosphate Deposits
- Report describing the geology of the land-pebble phosphate district on the Gulf Coastal Plain of Florida. This district is mapped out and the formation of land-pebble phosphate deposits is shown.
- Geology of the Quartz Creek Pegmatite District, Gunnison County, Colorado
- Report discussing the geology of the Quartz Creek pegmatite district of Gunnison County, Colorado. "The Quartz Creek pegmatite district includes an area of about 29 square miles in the vicinity of Quartz Creek in Gunnison County, Colorado. This area contains 1,803 pegmatites that are intruded into pre-Cambrian rocks."
- Geology of the Quartz Creek pegmatite district, Gunnison County, Colorado
- A report regarding the geology of the Quartz creek Pegmatite District, in Gunnison County, Colordao
- Geophysical Observations in Parts of the Grants District, Mckinley County, New Mexico
- Report discussing geophysical observations in parts of the Grants district of McKinley County, New Mexico. This study had the "dual objective of investigating the unusual occurrence of negative aeromagnetic anomalies in close association with airborne radioactivity anomalies, and of investigating other geophysical methods which might assist directly or indirectly in the search for uranium ores in the Grants district."
- Map of the Uranium Region of the Colorado Plateau
- This is a geological map of the uranium region of the Colorado Plateau.
- [Maps of Metal-Mining Districts in Colorado]
- Three maps illustrating distribution of metal deposits in metal-mining districts in Colorado. The first map is a geological survey indicating uranium deposits, rock characteristics, and the location of the Central Mining District in relationship to counties in Colorado. The second map shows pitchblende deposits and bostonite dikes in the Front Range Mineral Belt near Central City, Colorado. The third map near indicates the locations of pitchblende deposits alongside metal vein systems near Central City, Colorado
- Methods of Analysis Used in the Treatment of Colorado Plateau Carnotite for Age Studies
- From Abstract: "This paper presents the methods of chemical analysis that were used to aid in mineralogic studies of Colorado Plateau carnotite for purposes of determining age of materials."
- 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."
- Notes on the Differential Leaching of Uranium, Radium, and Lead From Pitchblende in H2SO4 Solutions
- Report discussing the leaching of uranium, radium and lead from oxidized black Katanga pitchblende. Results of leaching are included.
- Numerical List of U.S. Geological Survey Trace Elements Reports to September 15, 1952
- From introduction: "This report lists in numerical order U.S. Geological Survey Trace Elements Investigations and Memorandum Reports and supersedes a similar report issued in January 1952 (TEI-202)."
- Occurrence and chemical character of ground water in the Morrison formation in southwestern Colorado and southeastern Utah
- A report discussing the occurrence and chemical character of ground water in the Morrison Formation in Southeastern Colorado and Southeastern Utah.
- The Occurrence of Zeunerite at Brooks Mountains, Seward Peninsula, Alaska
- Abstract: Zeunerite occurs near the surface of a granite stock on the southwest flank of Brooks Mountain, Alaska. The largest deposit is at the Foggy Day prospect where zeunerite is disseminated in hematite which partially or totally fills openings and vugs in a highly oxidized lensshaped body of pegmatitic granite and to a minor extent in openings and cracks in the weathered granite enclosing the lens. Although a few specimens from the pegmatitic lens contain as high as 2.1 percent equivalent uranium, the overall average content of the lens rock is between 0.1 and 0.2 percent equivalent uranium and about 0.07 percent equivalent uranium for both the lens material and the surrounding zeunerite-bearing granite.
- The Occurrence of Zeunerite at Brooks Mountains, Seward Peninsula, Alaska
- Report discussing an investigation of zeunerite found at Brooks Mountains, Alaska. This zeunerite was believed to be possibly uraniferous.
- Origin of the Chattanooga Shale
- Report discussing facts that support the shallow water theory of the origin of the Chattanooga black shale.
- Pegmatites of the Crystal Mountain District, Larimer County, Colorado
- From introduction: The study of the Crystal Mountain district, Larimer County, Colo., is but one phase of this post-World War II pegmatite program, in part carried out by the Geological Survey on behalf of the Division of Raw Materials of the Atomic Energy Commission.
- Pegmatites of the Crystal Mountain District, Larimer County, Colorado
- Report discussing the geology of the pegmatites in the Crystal Mountain district in Larimer County, Colorado.
- The Permian Phosphate Deposits of Western United States
- From abstract: The Permian marine phosphorite deposits of the western United States were laid down in the Phosphoria formation and its partial stratigraphic equivalents over an area of about 135,000 square miles in Montana, Idaho, Wyoming, Utah, and Nevada. The deposits in the eastern part of the field lie on the western margin of the structurally simple North American craton.
- The Permian Phosphorite Deposits of Western United States
- Report describing the phosphorite deposits of the western United States with the objective of outlining features that are common to both the Kara Tau phosphorite deposits of Russia and the western United States deposits in an effort to define their origin.
- Preliminary Appraisal of the Carnotite Resources of the Carrizo Mountains Area, San Juan County, New Mexico, and Apache County, Arizona
- From introduction: A rapid appraisal of the carnotite resources of the Salt Wash sandstone member of the Morrison formation in the Carrizo Mountains area was undertaken by the U. S. Geological Survey late in 1951 in connection with its current project of geologic mapping of the area. Though brief and preliminary, this report provides a summary of production trends and estimated reserves in the area and indicates as far as possible the total potential of the area as a source of uranium. This information may be helpful in planning new milling facilities or other measures to encourage a higher rate of production.
- 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.
- Preliminary report on the Comet area, Jefferson City quadrangle, Jefferson County, Montana
- A preliminary report regarding the Comet Area, in the Jefferson City Quadrangle Jefferson County, Montana. This report contains work done on behalf of the Division of Raw Materials of the U. S. Atomic Energy Commission.
- Progress Report on Geologic Studies in the Capitol Reef Area, Wayne County, Utah
- From abstract: During 1951 about 60 square miles of the Capitol Reef area, Wayne County, Utah, the northern end of the Waterpocket Fold, was mapped by plane-table methods on a scale of 1:62, 500. Formations, with an approximate aggregate thickness of 3, 200 feet, range from the Coconino sandstone of Permian age to the Navajo sandstone of Jurassic (?) age. About 35 linear miles of Shinarump conglomerate of Triassic age was examined in detail. Cliffs 900 to 1, 000 feet high form the west face of Capitol Reef, which is on the east and northeast flanks of a structural and topographic dome, The uranium deposits are in the basal part of the Shinarump conglomerate. Zippeite and metatorbernite are the uranium minerals found, and are associated with copper minerals, carbonaceous matter, clay beds, a thick bleached zone at the top of the Moenkopi formation, and channels or scours in the top of the Moenkopi. The highest radioactivity is in a clay bed at the base of the Shinarump conglomerate, and was detected at 7 localities between Grand Wash and Capitol Gorge, at the Birch Spring prospect in Moonie Draw, and at the Oyler mine in Grand Wash.
- Progress Report on Geologic Studies in the Capitol Reef Area, Wayne County, Utah
- Report discussing a 1951 geological study of about 60 square miles of the Capitol Reef area of Wayne County, Utah. Specifically, the details of the first season's field work on the uranium deposits and on the sedimentary rocks of the area are presented.
- Progress Report on Investigations of Western Phosphate Deposits
- From abstract: A comprehensive investigation of the western phosphate deposits, in progress since 1947, involves a study of the Phosphoria and Park City formations over an area of about 135,000 square miles in the states of Montana, Idaho, Wyoming, and Utah0 It was undertaken to acquire more data on the thickness, composition and quality, structure, and distribution of the deposits--data that would help industry select deposits suitable for mining and permit estimation of reserves, evaluation of potential byproduct elements, and establishment of the origin of the deposits.
- Radioactive Granite in the Miller House-Circle Hot Springs Area, East-Central Alaska
- Report discussing the uranium-containing radioactive granite of the Miller House-Circle Hot Springs area of east-central Alaska.
- Radioactive granite in the Miller House-Circle Hot Springs area, east-central Alaska
- A report regarding radioactive granite located in the Miller House-Circle Hot Springs area, in East-Central Alaska. This report contains work done on behalf of the Division of Raw Materials of the U.S. Atomic Energy Commission.
- Radioactive Pegmatite Minerals in the Willow Creek Mining District, South-Central Alaska
- Report discussing the findings of a geological field examination of the Willow Creek mining district of south-central Alaska in 1949.
- Radioactive Pegmatite Minerals in the Willow Creek Mining District, South-Central Alaska
- This report discusses a field examination made to search for radioactive pegmatite materials located in the Willow Creek Mining District in South Central Alaska.