Results 91 to 100 of about 1,274 (217)

Uraninite, Coffinite and Ningyoite from Vein-Type Uranium Deposits of the Bohemian Massif (Central European Variscan Belt)

, 2019
Uraninite-coffinite vein-type mineralisation with significant predominance of uraninite over coffinite occurs in the Příbram, Jáchymov and Horní Slavkov ore districts and the Potůčky, Zálesí and Předbořice uranium ...
Vladimír Šrein, Jiří Sejkora, Zdeněk Dolníček, Pavel Škácha, Miloš René   +4 more
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Identification of Astronomical Cycles in Upper Cretaceous Sifangtai Formation and Constraints on Depositional Age of Uranium Mineralized Sandstones in Qian’an Area of Songliao Basin

Yuanzineng kexue jishu
Cyclostratigraphy is widely applied in establishing high-precision sequence stratigraphic frameworks and astronomical time scales, making it an important field in the quantitative study of sedimentology.
WANG Junxian1, 2, ,  LI Ziying1, 2, ,  XING Zuochang1, 2,  LIU Jungang1, 2,  SHI Qingping1, 2,  TIAN Mingming1, 2,  JIA Licheng1, 2
doaj   +1 more source

Tracing seawater evaporation and its role in the formation of sediment-hosted stratiform copper deposits

, 2014
This study investigates the preserved fluid contents of different generations of mineralised and unmineralised vein minerals from multiple different deposits across the Zambian Copperbelt to define the fluid physicochemical characteristics of the fluids ...
Nowecki, James Philip
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Geophysics Indicator of Sandstone‐Type Uranium Mineralization in the Northern Ordos Basin, China: Analysis From Gravity and Magnetic Data

Earth and Space Science
Ordos Basin, one of the largest uranium resource areas in China, holds significant potential due to its favorable metallogenic geological conditions and promising potential.
M. L. Xu, Y. B. Yang, Y. M. Deng, C. Y. Sun, Z. N. Su, C. H. Feng, S. L. Shi   +6 more
doaj   +1 more source

Classification of Logging Data Using Machine Learning Algorithms

Applied Sciences
A log data analysis plays an important role in the uranium mining process. Automating this analysis using machine learning methods improves the results and reduces the influence of the human factor.
Ravil Mukhamediev, Yan Kuchin, Nadiya Yunicheva, Zhuldyz Kalpeyeva, Elena Muhamedijeva, Viktors Gopejenko, Panabek Rystygulov   +6 more
doaj   +1 more source

Phosphate composition of uranium sooty (blacks) as indicator of their biogenic nature

Известия высших учебных заведений: Геология и разведка, 2016
The biogenic aspect of tetravalent uranium mineral-formation in a hypergenesis’ zone is considered in the light of the up-to-date data of a geomicrobiology and environmental-mineralogy, studying products of bacterial biorecultivation.
O. A. Doynikova
doaj   +1 more source

Multiscale heterogeneity and water abundance of uranium aquifers in coal measures and its significance

Meitan xuebao
The Ordos basin is a crucial comprehensive energy base in China, where coal and sandstone-type uranium resources frequently coexist in an associated form within the same clastic aquifer system, characterized by a typical “coal below, uranium above ...
Liyao LI, Fei XIA, Hui CHEN, Hao ZHOU, Han ZHANG, Zhibing FENG, Yue LUO, Jiale LI   +7 more
doaj   +1 more source

Research on the current status and future of U-Pb chronology study of uranium minerals from the sandstone-type uranium deposits

, 2018
In recent years we have conducted in-depth studies on the genetic mineralogy and U-Pb geochronology of uranium minerals (uraninite, coffinite, brannerite, etc.) and U-bearing minerals (rutile, apatite, etc.) from sandstone-type uranium deposit, using ...
Guo, Hu, Geng, Jianzhen, Zhang, Jian, Xiao, Zhibin, Xu, Yawen, Li, Guozhan, Ye, Lijuan, Tu, Jiarun, Li, Huimin, Zhou, Hongying   +9 more
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Evaluation of machine learning methods for lithology classification of sandstone-type uranium deposit based on well logging data in the Songliao Basin, Northeast China

Nuclear Engineering and Technology
Lithology identification plays a crucial role in uranium exploration, providing important information about geological conditions, deposit characteristics, and mineralization environments, which is significant for the exploration, development, and ...
Kun Xiao, Changwei Jiao, Changchun Zou, Yaxin Yang, Hongxing Li, Xudong Hu, Mengshi Chen, Dening Yin, Pengbo Yang, Rong He   +9 more
doaj   +1 more source

Sandstone uranium deposits of Nebraska and Colorado: a comparative study

, 2014
Sandstone-type uranium deposits are among the most economic sources of uranium. Despite their significance, the tabular deposits on the Colorado Plateau and roll-front deposits in Nebraska have not been studied adequately. There are important differences
Meek, Angela
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