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Bentonite Deposits of the Northern Black Hills District Wyoming, Montana, and South Dakota

Description: From abstract: The northern Black Hills bentonite mining district includes parts of Crook County, Wyo., Carter County, Mont., and Butte County, S. Dak. Within this district, many beds of bentonite occur interspersed with sedimentary strata of Cretaceous age that have an average total thickness of about 3,000 feet and consist chiefly of marine shale, marl, and argillaceous sandstone. The bentonite beds occur in formations ranging upward from the Newcastle sandstone to the lower part of the Mitte… more
Date: 1962
Creator: Knechtel, Maxwell M. & Patterson, Sam H.
Partner: UNT Libraries Government Documents Department
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Radioactive Rare-Earth Deposit at Scrub Oaks Mine, Morris County, New Jersey

Description: From abstract: A deposit of rare-earth minerals in the Scrub Oaks iron mine, Morris County, N. J., was mapped and sampled in 1955. The rare-earth minerals are mainly in coarse-grained magnetite ore and in pegmatite adjacent to it. Discrete bodies of rare-earth-bearing magnetite ore apparently follow the plunge of the main magnetite ore body at the north end of the mine. Radioactivity of the ore containing rare earths is about 0.2 to 0.6 milliroentgens per hour.
Date: 1959
Creator: Klemic, Harry; Heyl, Allen V., Jr.; Taylor, A. R. & Stone, Jerome
Partner: UNT Libraries Government Documents Department
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Beryl-bearing Pegmatites in the Ruby Mountains and Other Areas in Nevada and Northwestern Arizona

Description: From abstract: Pegmatite occurs widely in Nevada and northwestern Arizona, but little mining has been done for such pegmatite minerals as mica, feldspar, beryl, and lepidolite. Reconnaissance for beryl-bearing pegmatite in Nevada and in part of Mohave County, Ariz., and detailed studies in the Dawley Canyon area, Elko County, Nev., have shown that beryl occurs in at least 11 districts in the region. Muscovite has been prospected or mined in the Ruby and Virgin Mountains, Nev., and in Mohave Cou… more
Date: 1960
Creator: Olson, Jerry C. & Hinrichs, E. Neal
Partner: UNT Libraries Government Documents Department
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Strategic Graphite, A Survey

Description: From abstract: Strategic graphite consists of certain grades of lump and flake graphite for which the United States is largely or entirely dependent on sources abroad. Lump graphite of high purity, necessary in the manufacture of carbon brushes, is imported from Ceylon, where it occurs in vein deposits. Flake graphite, obtained from deposits consisting of graphite disseminated in schists and other metamorphic rocks, is an essential ingredient of crucibles used in the nonferrous metal industries… more
Date: 1960
Creator: Cameron, Eugene N. & Weis, Paul L.
Partner: UNT Libraries Government Documents Department
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Geology and Fluorspar Deposits, Northgate District, Colorado

Description: From abstract: The fluorspar deposits in the Northgate district, Jackson County, Colo., are among the largest in Western United States. The mines were operated intermittently during the 1920's and again during World War II, but production during these early periods of operation was not large. Mining was begun on a larger scale in 1951, and the district has assumed a prominent position among the fluorspar producers in the United States. Within the Northgate district, Precambrian metamorphic and … more
Date: 1960
Creator: Steven, Thomas August
Partner: UNT Libraries Government Documents Department
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Areal Geology of the Little Cone Quadrangle, Colorado

Description: From abstract: The Little Cone quadrangle includes an area of about 59 square miles in eastern San Miguel County in southwestern Colorado. The quadrangle contains features characteristic of both the Colorado Plateaus physiographic province and the San Juan Mountains, and it has been affected by geologic events and processes of two different geologic environments.
Date: 1960
Creator: Bush, Alfred Lerner; Marsh, Owen Thayer & Taylor, Richard B.
Partner: UNT Libraries Government Documents Department
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Manganese Deposits in the Drum Mountains, Juab and Millard Counties, Utah

Description: From abstract: The Drum Mountains are in west-central Utah 30 miles northwest of Delta, between the Sevier Desert on the east and Whirlwind Valley on the west. It is a typically barren desert range comprising a westward-tilted structural unit in which is exposed as much as 9,000 feet of quartzite (Cambrian and Precambrian?) and 3,000 feet of carbonate rocks of Cambrian age. These beds, which strike northward and dip west, are cut by myriad east- to northeast trending faults with displacements o… more
Date: 1961
Creator: Crittenden, Max D., Jr.; Straczek, John A. & Roberts, Ralph Jackson
Partner: UNT Libraries Government Documents Department
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Geology and Mineral Deposits of the St. Regis-Superior Area, Mineral County, Montana

Description: From introduction: The St. Regis-Superior area was studied during the summers of 1953 and 1954 as a part of geologic investigations by the U.S. Geologic Survey in and near the Coeur d'Alene district. The object of the present work was primarily threefold: to ascertain the main structural features in the area, with particular attention to the Osburn fault zone; to investigate the mineral deposits; and to determine the stratigraphic relations of the rocks.
Date: 1960
Creator: Campbell, Arthur Byron
Partner: UNT Libraries Government Documents Department
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Chromite Deposits in Central Part Stillwater Complex, Sweet Grass County, Montana

Description: From abstract: The chromite deposits of the central part of the Stillwater complex lie in a belt 9 miles long between the valleys of Boulder River and the West Fork of the Stillwater River in Sweet Grass County, Mont. The chromite occurs as layers near the middle part of the ultramafic zone in the lower part of the complex. The layers, originally horizontal, have been tilted so that they dip northeastwards at angles ranging from nearly horizontal to nearly vertical, and are cut by many cross fa… more
Date: 1955
Creator: Howland, A. L.
Partner: UNT Libraries Government Documents Department
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Strippable lignite Deposits, Slope and Bowman Counties, North Dakota

Description: From abstract: Slope and Bowman Counties, N. Dak., include an area of about 2,450 square miles in the southeastern part of the Fort Union coal region of North Dakota, South Dakota, and Montana. In anticipation of a future increase in the demand for the low-rank coal of this region as a fuel for electric power plants and as a raw material for various chemical synthesizing processes, Slope and Bowman Counties were investigated for deposits of lignite that could be mined by large scale strip minin… more
Date: 1955
Creator: Kepferle, Roy Clark & Culbertson, William C.
Partner: UNT Libraries Government Documents Department
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Geology and Coal Resources of the Henryetta Mining District, Okmulgee County, Oklahoma

Description: From abstract: The mapped area of the Henryetta mining district includes about 168 square miles in Okmulgee County in the east-central part of Oklahoma. The rocks in this district consist of sandstone, silty shale, and shale, and are divided into the Senora formation and the overlying Calvin sandstone of Pennsylvanian age.
Date: 1955
Creator: Dunham, R. J. & Trumbull, J. V. A.
Partner: UNT Libraries Government Documents Department
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Zinc-Lead-Copper Resources and General Geology of the Upper Mississippi Valley District

Description: From introduction: This report discusses the general geology of the Upper Mississippi Valley zinc-lead district, the distribution of ore deposits, and some relations of the ore deposits to the major geologic features.
Date: 1955
Creator: Heyl, Allen V.; Lyons, Erwin J.; Agnew, Allen F. & Behre, Charles H., Jr.
Partner: UNT Libraries Government Documents Department
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Geology of the Dry Valley Quadrangle, Idaho

Description: From introduction: The principal objective of the program is to make detailed geologic maps of the areas in which important phosphate deposits in the Phorphoria formation occur. It is hoped that the maps will serve both as an aid in selecting possible sites for mining and as a basis for calculating reserves.
Date: 1955
Creator: Cressman, Earle Rupert & Gulbrandsen, Robert A.
Partner: UNT Libraries Government Documents Department
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Geology of the Christmas Copper Mine, Gila County, Arizona

Description: From introduction: The exploration project at Christmas was carried on cooperatively by the Geological Survey and U. S. Bureau of Mines. Mr. 0. M. Bishop, Engineer for the Bureau of Mines, examined the property and in his report of June 6, 1942 recommended that six holes be drilled from the 800 level of the mine. The Bureau of Mines began drilling in September 1942, and the Survey investigations began a month later. Since any ore bodies discovered below the 800 level would be inaccessible until… more
Date: 1956
Creator: Peterson, Nels P. & Swanson, Roger W.
Partner: UNT Libraries Government Documents Department
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Perlite Resources of the United States

Description: Abstract: This report abstracts the published information on geologic occurrence and distribution of perlite in the United States. Perlite is important in the growing light-weight aggregates industry. The geology and petrology of perlite are described and brief mention is made of mining, milling, processing, economic factors, and reserve figures where known. A table of analyses of the rhyolitic, latitic, and dacitic perlite, welded tuff, pitchstone, and obsidian is included mainly to show the w… more
Date: 1956
Creator: Jaster, Marion C.
Partner: UNT Libraries Government Documents Department
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Geology of the Stanford-Hobson Area, Central Montana

Description: From introduction: The Stanford-Hobson area project was undertaken by the United States Geological Survey, in cooperation with the United States Bureau of Reclamation, as part of a program for the geologic mapping and investigation of mineral resources in the Missouri River basin. The field work that is the basis of the ensuing report consisted of mapping the geology and determining stratigraphic relationships in sufficient detail to evaluate the mineral resources, especially the oil and gas po… more
Date: 1956
Creator: Vine, James David
Partner: UNT Libraries Government Documents Department
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Reconnaissance Geology of Western Mineral County, Montana

Description: From introduction: This reconnaissance study was undertaken to determine the major geologic features of the western part of Mineral County, Mont., principally in the drainage basin of the St. Regis River.
Date: 1956
Creator: Wallace, Robert E. & Hosterman, John W.
Partner: UNT Libraries Government Documents Department
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Mineral Resources of the San Carlos Indian Reservation, Arizona

Description: From abstract: At the request of the Council of the San Carlos Apache Tribe the U. S. Geological Survey entered into a cooperative agreement calling for a brief reconnaissance study to determine, as far as practical, the mineral potential of the San Carlos Indian Reservation. Five months of field work was done during the winter and spring of 1952-53. About 30 percent of the reservation is covered by alluvial deposits of late Tertiary, Pleistocene, and Recent age, and another 60 percent is cover… more
Date: 1956
Creator: Bromfield, Calvin Stanton & Shride, Andrew F.
Partner: UNT Libraries Government Documents Department
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The Contact Mining District, Nevada

Description: From abstract: This report summarizes the results of a reexamination, in 1930, of the Contact mining district, in Elko County, northern Nevada. A report published as a result of a visit in 1910 summarizes the major features of the geology of the district, and the principal new data in the present paper pertain to mining development occasioned by the completion of a railroad through the camp in 1925.
Date: 1935
Creator: Schrader, Frank C.
Partner: UNT Libraries Government Documents Department
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The Rosebud Coal Field, Rosebud and Custer Counties, Montana

Description: From abstract: The Rosebud coal field, named from Rosebud Creek and the village of Rosebud, includes an area of about 1,050 square miles and forms a very small part of the subbituminous and lignite coal fields of eastern Montana and Wyoming and the western part of the Dakotas. It is an irregularly bounded tract lying south of the Yellowstone River in eastern Rosebud County and western Custer County and measures 50 miles from east to west and 28 miles from north to south. It adjoins the Forsyth … more
Date: 1936
Creator: Pierce, William Gamewell
Partner: UNT Libraries Government Documents Department
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The Richey-Lambert Coal Field, Richland and Dawson Counties, Montana

Description: From abstract: The Richey-Lambert coal field is an area of about 900 square miles in Richland and Dawson Counties, eastern Montana, along the divide between the Missouri and Yellowstone Rivers. In this region only flat-lying continental rocks occur near the surface. About 300 feet of the Lebo shale member and about 930 feet of the coal-bearing Tongue River member of the Fort Union formation, of Eocene age, are exposed in the area. Deposits of terrace gravel at two levels in the field are tentat… more
Date: 1936
Creator: Parker, Frank S.
Partner: UNT Libraries Government Documents Department
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Phosphate Rock Near Maxville, Philipsburg, and Avon, Montana

Description: From abstract: This paper gives the results of a resurvey of certain areas in Montana to which renewed interest has been directed by the development recently of a market for crude phosphate rock in British Columbia, nearby.
Date: 1936
Creator: Pardee, J. T.
Partner: UNT Libraries Government Documents Department
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Geology and Mineral Resources of the Western Part of the Arkansas Coal Field

Description: From introduction: This report describes the mineral resources of the western part of the Arkansas coal field and considers the features of geologic structure and stratigraphy that are essential to an understanding of the nature of occurrence of the mineral resources. The area is an irregular-shaped tract of about 1,100 square miles in Scott, Sebastian, Crawford, Franklin, and Logan Counties, in west-central Arkansas.
Date: 1937
Creator: Hendricks, T. A. & Parks, Bryan
Partner: UNT Libraries Government Documents Department
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Geology and Mineral Resources of North-Central Chouteau, Western Hill, and Eastern Liberty Counties, Montana

Description: From abstract: This report describes a rectangular area of about 2,600 square miles in Chouteau, Hill, and Liberty Counties, Mont., adjacent to the international boundary. The area is a portion of the Missouri Plateau, a section of the Great Plains province, and lies between the Highwood Mountains, Bearpaw Mountains, and Sweetgrass Hills, of north-central Montana. The southern part of the area is drained by the Missouri River and its tributary Marias River, but the northern part is drained by t… more
Date: 1937
Creator: Pierce, William Gamewell & Hunt, Charles B.
Partner: UNT Libraries Government Documents Department
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