|
Uranium Mining In Utah
Uranium mining in Utah, a state of the United States, has a history going back more than 100 years. Uranium mining started as a byproduct of vanadium mining about 1900, became a byproduct of radium mining about 1910, then back to a byproduct of vanadium when the radium price fell in the 1920s. Utah saw a uranium boom in the late 1940s and early 1950s, but uranium mining declined in the 1980s. Since 2001 there has been a revival of interest in uranium mining, as a result of higher uranium prices. Uravan mineral belt Mining of uranium-vanadium ore in southeast Utah goes back to the late 19th century, at the northern end of the Uravan mineral belt (see ''Uranium mining in Colorado''), where it crosses into Grand County, Utah. Uranium occurs in the Salt Wash member of the Morrison Formation of Jurassic age. Because much of the value depended on the vanadium content, the only economic ore minerals were carnotite and tyuyamunite. Following World War II buying for nuclear weapons ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cutler Formation
The Cutler Formation or Cutler Group is a rock unit that is exposed across the U.S. states of Arizona, northwest New Mexico, southeast Utah and southwest Colorado. It was laid down in the Early Permian during the Wolfcampian epoch. Description At its type area north of Ouray, Colorado, the Cutler Formation consists of over of bright red sandstone, siltstone, and conglomerate beds alternating with reddish mudstone or clay-rich limestone. Further west, the unit shows great lithological diversity, and can be divided into easily recognizable mappable subunits. Here the Cutler is raised from formation to group rank and its subunits are themselves designated as formations. The unit in its type area remains at formation rank and is often described as the "undifferentiated Cutler". The formation overlies the Hermosa Group and is in turn overlain by either the Dolores Formation (near its type area) or the Moenkopi Formation (further west). It is laterally equivalent to the Abo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sevier County, Utah
Sevier County ( ) is a county in Utah, United States. As of the 2010 United States Census, the population was 20,802. Its county seat and largest city is Richfield. History Evidence of indigenous peoples residing in Sevier County up to 5,000 BP has been unearthed. The Fremont culture of Native Americans occupied the area from about 2000 to 700 BP. The Clear Creek site contains native petroglyphs from that period. In Utah, the Numic- (or Shoshonean) speaking peoples of the Uto-Aztecan language family evolved into four distinct groups in the historical period: the Northern Shoshone, Goshute or Western Shoshone, Southern Paiute, and Ute peoples. This territory's central and eastern sections were occupied primarily by various bands of the Ute. The first modern sighting of the Sevier River was most likely by the Catholic fathers Silvestre Vélez de Escalante and Francisco Atanasio Domínguez, on their expedition to California in 1776. The Old Spanish Trail was the route they ma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Piute County, Utah
Piute County ( ) is a county in south-central Utah, United States. As of the 2010 United States Census, the population was 1,556, making it the second-least populous county in Utah. The county seat is Junction, and the largest town is Circleville. History Paiute County was formed on January 16, 1865, with areas annexed from Beaver County. It was named for the Paiute tribe of Native Americans. Its defined boundaries were altered by adjustments between adjoining counties in 1866, in 1880, in 1892, and in 1931. It has retained its current configuration since 1931. By the 1860s, mining prospectors were pushing into central and southern Utah Territory, and several mining towns, such as Bullion and Webster, appeared. Mining activity had slowed by the 1900s, but gold mining (from lodes in Tushar Mountains) had produced 240,000 ounces of gold from 1868 through 1959. As the nation entered The Great War, a mine on the east Tushar Mountains producing potash and alumina became a national ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Marysvale, Utah
Marysvale is a town in Piute County, Utah, United States. The population was 408 at the 2010 census. Marysvale is a trail head for the Paiute ATV Trail. History A post office called Marysvale has been in operation since 1872. The town's name probably commemorates the Virgin Mary. In the late 1860s, silver ore was discovered in the Volcanic Series of Bullion Canyon and Mount Belknap, west of Marysvale in the Tushar Mountains. In 1889, gold was discovered. Then in 1949, uranium was discovered, prompting the United States Atomic Energy Commission to establish an ore purchasing station and field office in Marysvale. The uranium occurs as veins within quartz monzonite, granite and rhyolite, usually in the form of pitchblende, but also as umohoite, which was first identified at Marysvale. The pitchblende has been age dated to the Late Miocene. Total uranium production from the Marysvale area amounted to about 275,000 tons of 0.2 per cent U2O8. Geography According to the Uni ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Denison Mines
Denison Mines Corp. is a Canadian uranium exploration, development, and production company. Founded by Stephen B. Roman, and best known for its uranium mining in Blind River and Elliot Lake, it later diversified into coal, potash, and other projects. History About 1,000 workers at Denison's Elliot Lake mines went on strike in 1974, protesting unhealthy working conditions. The protest led to immediate improvements in safety conditions, and prompted Bill Davis to commission James Milton Ham to lead the Royal Commission on the Health and Safety of Workers in Mines. Denison served as manager for Uranium Participation Corporation, a Toronto-based investment fund which holds no license to deal in uranium until 2021 before it was sold to Sprott Asset Management and WMC Energy. Ownership and leadership 15% of the company is owned by Korea Electric Power Corporation (KEPCO). The CEO is David D. Cates, and Ron F. Hochstein is the chair of the board. Operations Denison's prin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Coffinite
Coffinite is a uranium-bearing silicate mineral with formula: U(SiO4)1−x(OH)4x. It occurs as black incrustations, dark to pale-brown in thin section. It has a grayish-black streak. It has a brittle to conchoidal fracture. The hardness of coffinite is between 5 and 6. It was first described in 1954 for an occurrence at the La Sal No. 2 Mine, Beaver Mesa, Mesa County, Colorado, US, and named for American geologist Reuben Clare Coffin (1886–1972). It has widespread global occurrence in Colorado Plateau-type uranium ore deposits of uranium and vanadium. It replaces organic matter in sandstone and in hydrothermal vein type deposits. It occurs in association with uraninite, thorite, pyrite, marcasite, roscoelite, clay minerals and amorphous organic matter. Composition Coffinite's chemical formula is U(SiO4)1−x(OH)4x. X-ray powder patterns from samples of coffinite allowed geologists to classify it as a new mineral in 1955. A comparison to the x-ray powder pattern of zircon (ZrS ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shinarump Conglomerate
The Shinarump Conglomerate is a geologic formation found in the Four Corners region of the United States. It was deposited in the early part of the Late Triassic period. Description The Shinarump Conglomerate is a highly resistant coarse-grained sandstone and pebble conglomerate, (minor or major conglomerates are a typical base layer after unconformities or disconformities; the Shinarump is a major conglomerate) with rare lenses of mudstone, sometimes forming a caprock because of its hardness, cementation, and erosion resistance. The Shinarump is found throughout the Colorado Plateau with significant exposures as the canyon rimrock in the vicinity of Canyon De Chelly National Monument, at the north-northeast of the Defiance Plateau/Defiance Uplift. At Canyon De Chelly the Shinarump Conglomerate was laid down upon De Chelly Sandstone-(280 Ma, an erosion unconformity of 50 my), in a region at the west foothill region of the mostly north-south trending Chuska Mountains of northeast Ar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Uranium Mining In Arizona
Uranium mining in Arizona has taken place since 1918. Prior to the uranium boom of the late 1940s, uranium in Arizona was a byproduct of vanadium mining of the mineral carnotite. Carrizo Mountains Uranium mining started in 1918 in the Carrizo Mountains as a byproduct of vanadium mining. The district is in Apache County, in the northeast corner of Arizona. The uranium and vanadium occur as carnotite in sandstone of the Salt Wash member of the Morrison Formation (Jurassic). Production stopped in 1921. Another period of mining took place from 1941 to 1966, producing 360,000 pounds (160 metric tons) of uranium oxide (U3O8).Robert B. Scarborough (1981) ''Radioactive Occurrences and Uranium Production in Arizona'', US Department of Energy, part 3, GJBX-143-(81). Monument Valley A Navajo discovered uranium in 1942 in Monument Valley on the Navajo Nation in northeast Arizona. The first mine in the district opened in 1948. Uranium and uranium-vanadium minerals occur in fluvial chan ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Monument Valley
Monument Valley ( nv, Tsé Biiʼ Ndzisgaii, , meaning ''valley of the rocks'') is a region of the Colorado Plateau characterized by a cluster of sandstone buttes, the largest reaching above the valley floor. It is located on the Utah-Arizona state line, near the Four Corners area. The valley is a sacred area that lies within the territory of the Navajo Nation Reservation, the Native American people of the area. Monument Valley has been featured in many forms of media since the 1930s. Director John Ford used the location for a number of his Westerns; critic Keith Phipps wrote that "its have defined what decades of moviegoers think of when they imagine the American West." Geography and geology The area is part of the Colorado Plateau. The elevation of the valley floor ranges from above sea level. The floor is largely siltstone of the Cutler Group, or sand derived from it, deposited by the meandering rivers that carved the valley. The valley's vivid red color comes from iron ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Colorado Plateau Geologic Cross Section
Colorado (, other variants) is a state in the Mountain West subregion of the Western United States. It encompasses most of the Southern Rocky Mountains, as well as the northeastern portion of the Colorado Plateau and the western edge of the Great Plains. Colorado is the eighth most extensive and 21st most populous U.S. state. The 2020 United States census enumerated the population of Colorado at 5,773,714, an increase of 14.80% since the 2010 United States census. The region has been inhabited by Native Americans and their ancestors for at least 13,500 years and possibly much longer. The eastern edge of the Rocky Mountains was a major migration route for early peoples who spread throughout the Americas. "''Colorado''" is the Spanish adjective meaning "ruddy", the color of the Fountain Formation outcroppings found up and down the Front Range of the Rocky Mountains. The Territory of Colorado was organized on February 28, 1861, and on August 1, 1876, U.S. President Ulysses S. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Charlie Steen
Charles Augustus Steen (December 1, 1919 – January 1, 2006) was a geologist who made and lost a fortune after discovering a rich uranium deposit in Utah during the uranium boom of the early 1950s. Early years Charlie Steen was born in 1919 in Caddo, Stephens County, Texas, the son of Charles A. and Rosalie Wilson Steen, and attended high school in Houston, Texas, Houston. As a teen Steen worked summers for a construction company that helped finance his education, this is the same company that his first stepfather Lisle had died working at. He went on to study at Tarleton State University, John Tarleton Agricultural College in Stephenville, Texas where he met his wife Minnie Lee Holland, and in 1940 transferred to the University of Texas at El Paso, College of Mines and Metallurgy of the University of Texas, receiving a B.A. in geology in 1943. Ineligible for the draft because of his poor eyesight, Steen spent World War II working as a petroleum geologist in the Amazon Basin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
