Uranium ore ≈ Uranium ore
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Sedimentary facies interpretation of Gamma Ray (GR) log as basic well logs in Central and Lower Indus Basin of Pakistan Open
Rocks and most type of soils emit Gamma Ray (GR) in varying amount. The emitting elements of primary gamma radiations include potassium 40, uranium, and thorium which are associated with rocks forming minerals in variable amount. GR log is…
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Geochemical Behavior of Uranium and Radon in Groundwater of Jurassic Granite Area, Icheon, Middle Korea Open
Uranium concentrations (a total of 82 samples) in groundwater in Icheon, middle Korea, showed a wide range from 0.02 to 1640 μg/L with a mean of 56.77 μg/L, a median of 3.03 μg/L, and a standard deviation of 228.63 μg/L. Most groundwater s…
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Genesis of sandstone-type uranium deposits along the northern margin of the Ordos Basin, China Open
Sandstone-type U mineral resources are among the important sources for nuclear energy. The U deposits in the Ordos Basin in China form part of the northern segment of the sandstone-hosted Central Asian Uranium Mega-Province. Two types of m…
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Uranium-rich diagenetic fluids provide the key to unconformity-related uranium mineralization in the Athabasca Basin Open
The Proterozoic Athabasca Basin is well known for its unusually large-tonnage and high-grade ‘unconformity-related’ uranium (U) deposits, however, explanations for the basin-wide U endowment have not been clearly identified. Previous studi…
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Bioleaching of Uranium Tailings as Secondary Sources for Rare Earth Elements Production Open
Tailings from inactive uranium mine sites represent a potential secondary source of rare earth elements (REEs). For this study, two mine tailings (DT and RAT) from restored uranium sites in Ontario, Canada, were used. Bioleaching experimen…
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Isotopic Evidence for Reductive Immobilization of Uranium Across a Roll-Front Mineral Deposit Open
We use uranium (U) isotope ratios to detect and quantify the extent of natural U reduction in groundwater across a roll front redox gradient. Our study was conducted at the Smith Ranch-Highland in situ recovery (ISR) U mine in eastern Wyom…
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210Pb and 210Po in Geological and Related Anthropogenic Materials: Implications for Their Mineralogical Distribution in Base Metal Ores Open
The distributions of 210Pb and 210Po, short half-life products of 238U decay, in geological and related anthropogenic materials are reviewed, with emphasis on their geochemical behaviours and likely mineral hosts. Concentrations of natural…
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The Role of Organic Matter on Uranium Precipitation in Zoovch Ovoo, Mongolia Open
The Zoovch Ovoo uranium deposit is located in East Gobi Basin in Mongolia. It is hosted in the Sainshand Formation, a Late Cretaceous siliciclastic reservoir, in the lower part of the post-rift infilling of the Mesozoic East Gobi Basin. Th…
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Abundance, Distribution, and Modes of Occurrence of Uranium in Chinese Coals Open
Due to its environmental and resource impacts, the geochemistry of uranium in coal is of both academic and practical significance. In order to give a comprehensive summary about the geochemistry of uranium in coals, the abundance, distribu…
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Sandstone-hosted uranium deposits of the Colorado Plateau, USA Open
More than 4,000 sandstone-hosted uranium occurrences host over 1.2 billion pounds of mined and in situ U3O8 throughout the Colorado Plateau. Most of the resources are in two distinct mineral systems with deposits hosted in the Triassic Chi…
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Multi-scale investigation of uranium attenuation by arsenic at an abandoned uranium mine, South Terras Open
Detailed mineralogical analysis of soils from the UK’s historical uranium mine, South Terras, was performed to elucidate the mechanisms of uranium degradation and migration in the 86 years since abandonment. Soils were sampled from the sur…
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Mineralogical and geochemical research on Pengyang deposit: A peculiar eolian sandstone-hosted uranium deposit in the southwest of Ordos Basin Open
The newly discovered Pengyang uranium prospect area in the southwest of the Ordos Basin is the world's first uranium deposit hosted in eolian sandstone, which overturned the conventional view of uranium mineralization in fluvial-delta sedi…
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Spatial distribution of uranium and metalloids in groundwater near sandstone-type uranium deposits, Southern Mongolia Open
In the Dornogobi Aimag region of Southern Mongolia, the main source of groundwater contamination by U, As, and Se is hydrogenic- or sandstone-type uranium deposits. These environmentally hazardous deposits, located in close proximity to po…
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Bolete mushroom Boletus bainiugan from Yunnan as a reflection of the geographical distribution of 210Po, 210Pb and uranium (234U, 235U, 238U) radionuclides, their intake rates and effective exposure doses Open
This pioneering study aimed to determine the activity concentrations of 210Po, 210Pb and uranium (234U, 235U, 238U) radionuclides in fruit bodies of wild bolete Boletus bainiugan Dentinger and to estimate its edible safety, which may give …
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Constraints of tectonic uplift and denudation on sandstone-type uranium mineralization in Meso-Cenozoic basins in northern China: A review Open
The controlling effect of tectonic uplift and denudation on uranium mineralization has been much studied previously, and its important contribution to uranium mineralization has been fully recognized. However, no systematic theory and meth…
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Fault Zone Evolution and Development of a Structural and Hydrological Barrier: The Quartz Breccia in the Kiggavik Area (Nunavut, Canada) and Its Control on Uranium Mineralization Open
In the Kiggavik area (Nunavut, Canada), major fault zones along, or close to, where uranium deposits are found are often associated with occurrence of thick quartz breccia (QB) bodies. These bodies formed in an early stage (~1750 Ma) of th…
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Uranium resources in China’s phosphate rocks – identifying low-hanging fruits Open
China is rapidly increasing its nuclear power fleet of light water reactors and will as a result need more and more uranium fuel. For now, Beijing is following a strategy known as 'three third rule' when it comes to the nation's uranium su…
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The presence of radioactive heavy minerals in prospecting trenches and concomitant occupational exposure Open
Uranium, perhaps the most strategically important component of heavy minerals, finds particular significance in the nuclear industry. In prospecting trenches, the radioactivity of 238 U and 232 Th provides a good signature of the presence …
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Fractal kinetic characteristics of hard-rock uranium leaching with sulfuric acid Open
In order to study the fractal dynamic properties of uranium leach mining and discuss the influence of ore crushing on the dynamics of leach mining, uranium mine ore rocks in southern China were selected as the research object and an acid l…
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Unconformity-Type Uranium Systems: A Comparative Review and Predictive Modelling of Critical Genetic Factors Open
A review of descriptive and genetic models is presented for unconformity-type uranium deposits with particular attention given to spatial representations of key process components of the mineralising system and their mappable expressions. …
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The Mineral Chemistry of Chlorites and Its Relationship with Uranium Mineralization from Huangsha Uranium Mining Area in the Middle Nanling Range, SE China Open
The Huangsha uranium mining area is located in the Qingzhangshan uranium-bearing complex granite of the Middle Nanling Range, Southeast China. This uranium mining area contains three uranium deposits (Liangsanzhai, Egongtang, and Shangjiao…
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Uranium in groundwaters: Insights from the Leinster granite, SE Ireland Open
Uranium concentrations in groundwaters from >100 private wells in the Caledonian Leinster Granite Batholith of SE Ireland range from a few μg/l to >300 μg/l. Approximately 10% of the wells exhibit uranium concentrations that exceed the cur…
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Geochemical Characteristics and Uranium Neutral Leaching through a CO2 + O2 System—An Example from Uranium Ore of the ELZPA Ore Deposit in Pakistan Open
Geochemical characterization studies and batch leaching experiments were conducted to explore the effects of a CO2 + O2 leaching system on uranium (U) recovery from ores obtained from an eastern limb of Zinda Pir Anticline ore deposit in P…
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Spatial variability of soils and stream sediments and the remediation effects in a Portuguese uranium mine area Open
The old Senhora das Fontes uranium mine, located in central Portugal, was closed down in 1971. Thetreatment of ores from this mine and other mines by heap-leach ended in 1982. Seven dumps partiallycovered by vegetation were left in the are…
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A comparison of uranium recovery from low-grade ore by bioleaching and acid leaching Open
Wrocław
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Reactive Transport Modeling during Uranium In Situ Leaching (ISL): The Effects of Ore Composition on Mining Recovery Open
Unconsolidated sandstone uranium deposits exploited by the in situ leaching (ISL) method, contain complex tetravalent and hexavalent uranium compounds, mostly as UO2 and UO3 oxides that have different dissolution rates in sulfuric acid sol…
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Long-Term Evolution of Uranium Mobility within Sulfated Mill Tailings in Arid Regions: A Reactive Transport Study Open
Management of mill tailings is an important part of mining operations that aims at preventing environmental dispersion of contaminants of concern. To this end, geochemical models and reactive transport modeling provide a quantitative asses…
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Characteristics of sandstone-type uranium mineralization in the Hangjinqi region of the northeastern Ordos Basin: Clues from clay mineral studies Open
The uranium deposits in the northeastern Ordos Basin are closely related to clay minerals and coal seam both in space and genesis, and the generation of kaolinite in the Zhiluo Formation is controlled by the coal seam of the Yan'an Formati…
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Linked thermal convection of the basement and basinal fluids in formation of the unconformity‐related uranium deposits in the Athabasca Basin, Saskatchewan, Canada Open
World‐class unconformity‐related U deposits in the Athabasca Basin (Saskatchewan, Canada) are generally located within or near fault zones that intersect the unconformity between the Athabasca Group sedimentary basin rocks and underlying m…
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Middle Jurassic - Early Cretaceous drastic paleoenvironmental changes in the Ordos Basin: Constraints on sandstone-type uranium mineralization Open
Middle Jurassic - Early Cretaceous paleoenvironmental evolution is fundamental to U (Uranium) migration and U-enrichment in the Ordos Basin. However, the detailed long-term terrestrial climate evolution across the Jurassic/Cretaceous (J/K)…