Results 31 to 40 of about 366 (182)

Selenium in some oxidized sandstone-type uranium deposits [PDF]

, 1963
A report about selenium and other trace metals in samples from some oxidized sandstone-type uranium deposits that demonstrate that concentrations of as much as 0.1 percent selenium are not uncommon in the immediate vicinity of uranium concentrations.
openaire   +1 more source

In-situ Micro-scale Pb Isotope Identification Characteristics of Metallogenic and Non-metallogenic Pyrites in Sandstone-type Uranium Deposits

Yankuang ceshi, 2022
BACKGROUND Sandstone-type uranium deposits contain a large number of pyrites of different shapes and stages. It is difficult to accurately discriminate the pyrite formed before, during or after the metallogenic period solely by observation of pyrite ...
ZHANG Xiaorui, WU Bailin, LEI Angui, YANG Songlin, YAO Luhang, PANG Kang, BAO Zhian, WANG Miao, HAO Xin, LIU Mingyi, LI Qi, LIN Zhouyang   +11 more
doaj   +1 more source

Constraints of the sequence stratigraphic structure of uranium-bearing series on mineralization in Qianjiadian uranium deposit, Songliao Basin

地质科技通报, 2021
Understanding the stratigraphic structure of uranium-bearing rock series in sandstone-type uranium deposits and its constraints on uranium mineralization is the basis of understanding the uranium metallogenic regularity and mineralization. In this paper,
Minqiang Cao
doaj   +1 more source

Uranium resource of Europe: Development status, metallogenic provinces and geodynamic setting

Energy Strategy Reviews
Since the 21st century, the closure of domestic uranium mines in Europe has made it one of the world's leading importers of uranium. In recent years, a series of policy adjustments have led to an improving situation for enriched uranium supply, yet the ...
Zexin Wang, Hao Song, Youliang Chen, Jiye Song, Mingcai Hou, Qi Li, Qianmin Du, Huijie Yu   +7 more
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Iowa Population Exposures to Metals and Metalloids in Well Water

Environmental Toxicology, EarlyView.
ABSTRACT Previous Iowa studies suggest low levels and chronic arsenic exposures are associated with prostate cancer. The rural Iowa population heavily relies on private wells for drinking water resources and thus is vulnerable to contaminants such as heavy metals found in well water.
Donald L. Simmons, Brian Wels, Alyssa Mattson, Elizabeth M. Miller, Zachary E. Hoggarth, Maya Sternberg, Susie Y. Dai, Dustin May, Michael Schueller, Michael Pentella   +9 more
wiley   +1 more source

Estimation of Filtration Properties of Host Rocks in Sandstone-Type Uranium Deposits Using Machine Learning Methods

IEEE Access, 2022
The nuclear decay of uranium is one of the cleanest ways to meet the growing energy demand. The uranium needed for power plants is mainly extracted by two methods in roughly equal amounts: quarries (underground and open pit) and in-situ leaching (ISL ...
Ravil I. Mukhamediev, Yan Kuchin, Yedilkhan Amirgaliyev, Nadiya Yunicheva, Elena Muhamedijeva   +4 more
doaj   +1 more source

Study on Uranium Occurrence State of Sandstone-Type Uranium Deposits in Qianjiadian Region, Songliao Basin, China

IOP Conference Series: Earth and Environmental Science, 2020
Abstract The Qianjiadian uranium deposit is located in the southwest margin of Songliao basin. In this paper, electron probe, energy spectrum, back scattering analysis, scanning electron microscopy and other experimental methods are used to study uranium occurrence form and uranium mineral type in Qiandaidian uranium deposit. The results
Bo Zhang, Jianguo Li, Peisen Miao, Qinghong Si   +3 more
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REE/trace element characteristics of sandstone-type uranium deposits in the Ordos Basin [PDF]

Chinese Journal of Geochemistry, 2006
The major elements, trace elements and REEs were analyzed on the samples collected from the sandstone-type uranium deposits in the Ordos Basin to constrain the mechanism of uranium enrichment. The total REE amount ranges from 36.7 to 701.8 μg/g and the REE distribution patterns of the sandstone-type uranium samples are characterized by LREE enrichment ...
Mingxing Ling, Xiaoyong Yang, Wei Sun, Jianyu Miao, Chiyang Liu   +4 more
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Identification of Water-rock Reaction Mechanism for Uranium In-situ Recovery Desalination Process Based on Inversion Modelling

Yuanzineng kexue jishu, 2023
For the in-situ recovery (ISR) mining of sandstone-type uranium deposits with the high total dissolved solids (TDS), the desalination process of injecting fresh water was required.
WANG Bing1,2;LUO Yue1,3,*;QIAN Jiazhong2;GAO Bai1;LIU Jinhui1,3;LI Xun1;ZHANG Yanhong1,3;CHEN Qianqian1;LI Liyao3
doaj   +1 more source

Rethinking Collinearity in Self‐Organizing Maps: Evidence From Geophysical Data Classification

Journal of Geophysical Research: Machine Learning and Computation, Volume 3, Issue 2, April 2026.
Abstract This study examines the impact of collinearity on unsupervised machine learning algorithms (UMLAs), specifically Self‐Organizing Maps (SOMs), for detecting lithological boundaries in geophysical data. Using a multi‐scale experimental framework that includes bivariate isotropic clusters, geologically complex Noddy simulations, and real‐world ...
Limin Xu, Leonardo Feltrin, Eleanor C. R. Green   +2 more
wiley   +1 more source