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Serial/Series Title
United States Geological Survey Reports
365
Trace elements investigations report
143
United States Department of Energy Grand Junction Office Reports
79
Atomic Energy Commission Reports
73
GJBX
73
Trace elements memorandum report
66
United States Bureau of Mines Reports
64
Water Resources Investigations Reports
55
U.S. Geological Survey bulletin
32
Geological Survey bulletin
23
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A Preliminary Summary Report of a Reconnaissance of Sandstone-Type Copper-Uranium Deposits in Parts of New Mexico, Colorado, Utah, Idaho, and Wyoming
From introduction: The reconnaissance was made during the summer of 1951 by two field parties: (1) a reconnaissance in parts of Oklahoma, Texas, New Mexico, and Arizona by Russell Gibson, and (2) Geological Survey reconnaissance in parts of New Mexico,.Colorado, Utah, Idaho, and Wyoming (by the writers), the results of which are summarized in this report.
Date:
December 1951
Creator:
Gott, Garland B. & Erickson, Ralph Leroy
System:
The UNT Digital Library
The Uranium Occurrences in the Martha E Prospect, Lawson-Dumont District, Clear Creek County, Colorado
From introduction: The Martha E prospect, in Spring Gulch about three and one-half miles southwest of Idaho Springs, Colo. (fig. 1), is on a claim, originally called the Daisy Freese, which was first prospected by the Stanley Mines. The occurrence of radioactive minerals in the adit was called to the attention of the U. S. Geological Survey in 1950 by the owners of the claim. The Survey's Trace Elements Section Washington Laboratory identified metatorbernite, autunite, and sooty pitchblende.
Date:
April 1952
Creator:
Harrison, Jack Edward
System:
The UNT Digital Library
Results of Exploration at the Old Leyden Coal Mine, Jefferson County, Colorado
From abstract: Six diamond-core holes totaling 2, 201 feet were drilled by the U. S. Bureau of Mines under contract to the U. S. Atomic Energy Commission at the Old Leyden coal mine, Jefferson County, Colo. The holes were spotted on the basis of geologic mapping by the U. S. Geological survey and were drilled to explore the lateral and downward extent of a uranium-bearing coal and the associated carnotite deposits in the adjacent sandstone. The data obtained from the diamond-core holes helped to explain the geology and structural control of the deposit. The uranium is most abundant in a coal bed that in places has been brecciated by shearing, and then altered to a hard, dense, and silicified rock. The uraniferous coal is in the nearly vertical beds of the Laramie formation of Upper Cretaceous age,
Date:
December 1952
Creator:
Gude, Arthur J., III & McKeown, F. A.
System:
The UNT Digital Library
Interim Report on Exploration of the Moon Mesa and Horse Mesa Areas, Mesa and Montrose Counties, Colorado
From introduction: This report summarizes the results of diamond-drill exploration by the U. S. Geological Survey in the vicinity of Moon and Horse Mesas during the period November 14, 1950 to January 26, 1952.
Date:
1952
Creator:
Stewart, John H.
System:
The UNT Digital Library
Preliminary Report on Exploration in the Spud Patch Area, San Miguel County, Colorado
From introduction: From November 1949 to May 1952, the U. S. Geological Survey explored the Spud Patch area by diamond drilling to find carnotite deposits that would make new mines and to appraise the reserves of the area. Previous work and a brief outline of the general geology of the area have been reported (Bell and Icke, 1950; and Bell, 1952).
Date:
1952
Creator:
Hilpert, Lowell S.
System:
The UNT Digital Library
Preliminary Report on the Carnotite Deposits of the Old Leyden Coal Mine, Jefferson County, Colorado
From introduction: Mapping, sampling, and radiometric reconnaissance of the uranium-bearing deposits in the Laramie formation in the vicinity of the Old Leyden coal mine, sec. 28, T. 2 S., R. 71 W., Jefferson County, Colorado (fig. 1), was completed August 10, 1951. Topographic and geologic maps were made of areas approximately 6,000 feet by 3,000 feet (scale 1:2h00), and 1,200 feet by 800 feet (scale 1:600). Underground workings at three clay mines and at the Old Leyden mine were also mapped. With the exception of the 1:600 map, which accompanies this report, these maps will be transmitted later with a more comprehensive report.
Date:
September 1951
Creator:
McKeown, Frank A. & Gude, James
System:
The UNT Digital Library
Preliminary Results of Radiometric Reconnaissance of Parts of the Northwestern San Juan Mountains, Gunnison, Ouray, San Juan, San Miguel, and Dolores Counties, Colorado
From abstract: A reconnaissance radiometric survey of parts of the northwestern San Juan Mountains has revealed the occurrence of uranium-bearing ores in several mining districts in Ouray and San Juan Counties, and the occurrence of thorium-bearing veins in southwestern Gunnison County.
Date:
March 1952
Creator:
Burbank, W. S. & Pierson, Charles Thomas
System:
The UNT Digital Library
Preliminary Analysis of Ore Distribution in the Gateway and Uravan Districts, Mesa and Montrose Counties, Colorado
From abstract: The distribution of the known uranium deposits of the Colorado Plateau is being analyzed in order 1) to test for systematic relationships between that pattern and geologic factors, 2) to help guide exploration, and 3) to appraise the potential resources of the region and of each of its component areas.
Date:
April 1954
Creator:
Strobell, J. D., Jr.; Sample, R. D.; Stephens, H. G. & Gilbert, Cynthia C.
System:
The UNT Digital Library
Geology and Mineralogy of the J.J. Mine, Jo Dandy Area, Montrose County, Colorado
Introduction: Detailed geologic mine mapping and sampling of the J.J. mine in the Jo dandy area, Montrose County, Colo., were undertaken to study a vanadium-uranium ore body in terms of the physical relationships of ore to host rock, the paragenetic sequence of ore minerals, and the sequential development of an oxidized suite of ore minerals from unoxidized ore.
Date:
September 1955
Creator:
Elston, Donald Parker & Botinelly, Theodore
System:
The UNT Digital Library
Study of Remote Military Power Applications: Report 5, NORAD
From introduction: The study is essentially an economic evaluation of the construction and operation of nuclear power plants at several designated military installations where increased power generating capabilities of 5 to 40 mwe may be required by the Government during the period 1963 through 1970.
Date:
July 1960
Creator:
unknown
System:
The UNT Digital Library
Overburden Characterization and Post-Burn Study of the Hanna Iv, Underground Coal Gasification Site, Wyoming, and Comparison to Other Wyoming Ucg Sites
Analysis of 21 post-burn cores taken from the Hanna IV UCG site allows 96 m (315 ft) of overburden to be subdivided into four local stratigraphic units. The 7.6 m (25 ft) thick Hanna No. 1 coal seam is overlain by a laterally discontinuous, 3.3 m (11 ft) thick shaley mudstone (Unit A') in part of the Hanna IV site. A more widespread, 30 m (90 ft) thick well-indurated sandstone (Unit A) overlies the A' unit. Unit A is the roof rock for both of the Hanna IV cavities. Overlying Unit A is a 33 m (108 ft) thick sequence of mudstone and claystone (Unit B), and the uppermost unit at the Hanna IV site (Unit C) is a coarse-grained sandstone that ranges in thickness from 40 to 67 m (131 to 220 ft). Two elliptical cavities were formed during the two phases of the Hanna IV experiment. The larger cavity, Hanna IVa, is 45 x 15 m in plan and has a maximum height of 18 m (59 ft) from the base of the coal seam to the top of the cavity; the Hanna IVb cavity is 40 x 15 m in plan and has a maximum height of …
Date:
November 1, 1984
Creator:
Marcouiller, B.A.; Burns, L.K. & Ethridge, F.G.
System:
The UNT Digital Library
Aerial Gamma Ray and Magnetic Survey, Final Report: Volume 2. Montrose Quadrangle
The quadrangle includes portions of the Colorado Plateau and southern Rocky Mountains Physiographic Provinces. The entire area of the Gunnison Uplift and parts of the Uncompahgre and Sawatch Uplifts are included. A part of the Piceance Basin and a segment of the Rio Grande Rift Valley are also included. A basement complex of Precambrian metamorphic and igneous rocks is exposed in the core of the Gunnison and Sawatch Uplifts in the Southern Rocky Mountains. Jurassic and Cretaceous age sedimentary rocks lie directly on the Precambrian basement in most places. They lie on Paleozoic rocks at the west edge of the Sawatch Uplift in the north-central part of the quadrangle. Triassic beds are mapped only in the canyon of the Uncompahgre River near the southwest corner of the quadrangle. A suite of Tertiary volcanics and some sedimentary rocks occupy extensive areas. Plutonic rocks of Tertiary and laramide age occupy only a small part of the quadrangle. The literature consulted included information on about 100 separate occurrences of radioactive minerals and/or anomalous radioactivity within the quadrangle. Many fracture and stratigraphically controlled forms are reported. Most of these occurrences are clustered in three areas: Cochetopa Creek, Cebolla Creek, and Marshall Pass. Important uranium …
Date:
April 1979
Creator:
GeoMetrics, Inc.
System:
The UNT Digital Library
Rehabilitation Potential and Practices of Colorado Oil Shale Lands. Progress Report, June 1, 1978--May 31, 1979
The following document is a third-year progress report for the period June 1, 1978 to May 31, 1979. The overall objective of the project is to study the effects of seeding techniques, species mixtures, fertilizer, ecotypes, improved plant materials, mycorrhizal fungi, and soil microorganisms on the initial and final stages of reclamation obtained through seeding and subsequent succession on disturbed oil shale lands. Plant growth medias that are being used in field-established test plots include retorted shale, soil over retorted shale, subsoil materials, and surface disturbed topsoils. Because of the long-term nature of successional and ecologically oriented studies the project is just beginning to generate significant publications. Several of the studies associated with the project have some phases being conducted principally in the laboratories and greenhouses at Colorado State Univerisity. The majority of the research, however, is being conducted on a 20 hectare Intensive Study Site located near the focal points of oil shale activity in the Piceance Basin. The site is at an elevation of 2,042 m, receives approximately 30 to 55 cm of precipitation annually, and encompasses the plant communities most typical of the Piceance Basin. Most of the information contained in this report originated from the monitoring …
Date:
March 1, 1979
Creator:
Cook, C.W.
System:
The UNT Digital Library
Radioactivity in the Jo Reynolds Mine, Clear Creek County, Colorado
From abstract: Eight tons of high grade pitchblende ore was sold from the Jo Reynolds mine near Lawson, Clear Creek County, Colo., in 1919. The pitchblende occurs with silver, lead, and zinc in carbonate-quartz veins cutting pre-Cambrian schist, granite gneiss, and granite.
Date:
January 1951
Creator:
King, Robert Ugstad
System:
The UNT Digital Library
Exploration of the Big Boulder Prospect, Larimer County, Colorado
From introduction: The Big Boulder prospect is in SE 1/4 sec. 36, T.7N., R.,72W., in Tarimer County, Colorado. The prospect has been opened by four irregular trenches and shallow cuts, and a 10-foot discovery shaft. Hanley 1/4 states that 10.5 tons of beryl were produced from the Big Boulder prospect in 1936, and about 600 pounds in 1941.
Date:
August 1950
Creator:
Thurston, W. R.
System:
The UNT Digital Library
Preliminary Report on the Jo Reynolds Area, Lawson-Dumont District, Clear Creek County, Colorado
From abstract: Pitchblende is known to occur in the Jo Reynolds deposit, which was primarily a lead-zinc-silver ore body. The reported production in 1919 of 8 tons of high-grade uranium ore, presumably from the lowest workings of the mine, is still unconfirmed but has a fair degree of credibility.
Date:
March 1952
Creator:
Harrison, Jack Edward & Leonard, B. F.
System:
The UNT Digital Library
Uranium Occurrences in the Golden Gate Canyon and Ralston Creek Areas, Jefferson County, Colorado
From abstract: Pitchblende, associated with base-metal sulfides, has been found at eight localities in the northern part of Jefferson County, Colo., in shear zones that cut pre-Cambrian metamorphic and igneous rocks, chiefly hornblende gneiss, biotite schist, and granite pegmatite. The pitchblende deposits, with one exception, are in major shear zones that contain vein-like bodies of carbonate-rich breccia. The breccia bodies range from 1 to 5 feet in thickness and are related probably to the Laramide faults, or "breccia reefs" of similar trend, mapped by Lovering and Goddard (1950).
Date:
January 1953
Creator:
Adams, John W.; Gude, Arthur J., III & Beroni, E. P.
System:
The UNT Digital Library
Pitchblende Deposits at the Wood and Calhoun Mines, Central City Mining District, Gilpin County, Colorado
From introduction: The purpose of this work was to determine the distribution and reserves of pitchblende in the veins. These particular mines were selected because the other mines that had produced pitchblende in the east were either inaccessible, or accessible under such adverse conditions as to make detailed mapping impracticable.
Date:
October 1950
Creator:
Moore, Frank B. & Butler, C. R.
System:
The UNT Digital Library
Preliminary Appraisal of Diamond-Drill Exploration in the Legin Group Area, San Miguel County, Colorado
From introduction: This preliminary report summarizes the results of the 1950 drilling in the Legin group area of San Miguel County, Colorado and gives a more complete, but preliminary, estimate of the uranium and vanadium ore reserves. When the radiometric and chemical assay data are completed, a detailed report will be transmitted.
Date:
February 1951
Creator:
Bell, Henry
System:
The UNT Digital Library
Preliminary Report on Diamond-Drill Exploration and Plans for Additional Drilling in Long Park and Vicinity, Montrose County, Colorado
From abstract and summary: Long Park and vicinity is in T. 47 N., R. 17 W., Montrose County, Colo. The U. S. Geological Survey started a program of drilling in the area in April 1949, to find deposits that might be developed into new mines and to appraise the reserves of the area. This drilling was done during two periods of time under separate contracts.
Date:
June 1951
Creator:
Stephens, H. G. & Newman, William L.
System:
The UNT Digital Library
Interim Report of Diamond-Drill Exploration, Club Mesa, Montrose County, Colorado
From introduction: The present report summarizes the indicated and inferred reserves which have been found to date by the drilling in Club Mesa, Montrose County of New Mexico, and includes an estimate of the potential reserves predicted for the area. It also includes a statement of plans for additional drilling. A final report will be prepared on the completion of the drilling planned for 1951.
Date:
May 1951
Creator:
Bryner, Leonid & Withington, Charles F.
System:
The UNT Digital Library
Proposed Exploration for Uranium in the Front Range Mineral Belt, Colorado
From abstract: Recorded production of pitchblende in the United States totals 313 tons of ore containing about 15 percent uranium. Of this total, 303 tons was produced at Central City and 8 tons at Lawson prior to World War I. The remaining 2 tons has been mined at Caribou during the past two years and is being stockpiled at the mine.
Date:
January 1951
Creator:
Moore, Frank B.; King, Robert Ugstad & Hinrichs, E. Neal
System:
The UNT Digital Library
Preliminary Report on 1952 Field Investigations in Wet Mountains, Colorado
From page 3: A metallogenic province containing thorium in veins in pre-Cambrian rocks along the western slope of the Wet Mountains, Colo. found by the Reconnaissance Group of the U. S. Geological Survey during the summer of 1950,was revealed by the discovery during fiscal-years 1951-1952 of seventeen radioactive deposits scattered along a north-northwest linear distance of twenty miles. All the thorium occurrences were found within terrain that has never been geologically mapped. Three of the most promising localities were mapped at 1:1,200, and a diamond-drilling program was conducted at Haputa ranch.
Date:
1953
Creator:
Singewald, Q. D.; Christman, Robert A. & Brock, M. R.
System:
The UNT Digital Library
Electrical Resistivity Investigations of Carnotite Deposits in the Colorado Plateau
From abstract: An investigation of the use of geophysical methods in prospecting for carnotite deposits in the Colorado Plateau was made by the Geophysics Branch of the U. S. Geological Survey between April 21 and June 24, 1949. Results of this preliminary work indicated that electrical resistivity methods could be used successfully.
Date:
April 1951
Creator:
Davis, W. E.
System:
The UNT Digital Library