Results 31 to 40 of about 726 (182)

In-Situ Leach Uranium Mining: A Review

Energy Exploration & Exploitation, 1983
This paper describes a current technique (ISL) in uranium mining, i.e. by solution or ‘leaching’. Although it is not yet widespread, it promises a relatively cheap and efficent means of extracting uranium from orebodies in sandstone deposits, such as those of the USA, Australia and Japan.
openaire   +1 more source

Appraisal of Six Natural Mica Reference Materials for In Situ Rb‐Sr Geochronology

Geostandards and Geoanalytical Research, EarlyView.
Key Points Evaluated six natural mica reference materials for in situ LA‐ICP‐MS/MS Rb‐Sr geochronology using geochemical, microstructural and isotopic characterisation. Identified robust primary reference materials: Mount Dromedary biotite (99.37 Ma) and Mica‐Fe biotite (307.75 Ma). La Posta biotite and Högsbo muscovite are suitable secondary reference
Hugo K.H. Olierook, Bruno V. Ribeiro, Janne Liebmann, Kai Rankenburg, Fred Jourdan, Ahmad Redaa, Jarred C. Lloyd, Thomas M. Belgrano, Carlos R. Corella Santa Cruz, Yujin Jegal, Julien Mercadier, Catherine Zimmermann, Jie Yu, Andreas Zametzer, Christopher L. Kirkland, Sarah E. Gilbert, Craig D. Storey, Luc S. Doucet, Isabelle Jones, Louisa Stokes, Thomas Zack, Delia Rösel, Denis Fougerouse, Jonas Kaempf, Priyanjan Datta, Hijas Hameed, Noreen J. Evans, Malcolm P. Roberts, Juraj Farkas, Stijn Glorie, Celia Mayers, R. Adam Frew, Sarah Al Odeh, Chloe E. Roche, Massimo Chiaradia, Alicia M. Cruz‐Uribe, Alan S. Collins, Andreas Karlsson, Anusha Shantha Kumara   +38 more
wiley   +1 more source

Diagenetic controls on porosity evolution and pore type organisation in microporous carbonate rocks: Evidence for mesogenetic porosity formation

Sedimentology, EarlyView.
ABSTRACT Microporous carbonate rocks typically record complex diagenetic histories driven by microbial activity and fluid interactions within multiple diagenetic environments. The relative roles of meteoric and burial diagenetic processes in pore evolution remain debated, particularly within Cretaceous carbonate systems of the Middle East, as does the ...
Hugues Bitault, Cathy Hollis, Alain Tonetto, Pierre Deschamps, Philippe Léonide, François Fournier   +5 more
wiley   +1 more source

Influence of geochemical factors on uranium migration during in-situ leaching [PDF]

E3S Web of Conferences
In-situ leaching is one of the most efficient methods for the development of sandstone-type uranium deposits. The efficiency of the process is determined by geochemical mechanisms of uranium mineral dissolution, oxidation of tetravalent uranium, and the ...
Nazarov Valijon, Khalimov Ilkhom, Sharafutdinov Ulug‘bek   +2 more
doaj   +1 more source

Cryptic Superfine Placer Gold Populations, Round Hill Mine, Southern New Zealand

New Zealand Journal of Geology and Geophysics, Volume 69, Issue 3, September 2026.
Superfine (50–<1 µm) detrital gold and platinum group mineral (PGM) particles at the Round Hill mine near Foveaux Strait were locally derived (<20 km) from as‐yet undefined basement sources. This superfine component contrasts with the dominant coarser (typically >100 µm) gold and PGM particles at the mine that have been transported for >100 km in ...
Marshall Palmer, Dave Craw
wiley   +1 more source

Designing Polymer Nanocomposites for X‐Ray Shielding: Mechanisms, Architectures, and Scalable Processing

Advanced Engineering Materials, Volume 28, Issue 15, 5 August 2026.
This review highlights advances in lightweight, lead‐free polymer nanocomposites for diagnostic X‐ray shielding. By linking filler chemistry, dispersion, architecture, and photon interaction mechanisms, it establishes structure–performance relationships guiding material design.
Aklilu G. Messele, Hossein Ipakchi, Tizazu H. Mekonnen   +2 more
wiley   +1 more source

Electrokinetic in situ leaching of U from low-permeability uranium ore

Nuclear Engineering and Technology
In this study, the impacts of electrokinetic in situ leaching of uranium (EK-ISLU) on the pore structure and connectivity of the low-permeability uranium ore and its leaching efficiency were investigated.
Chunguang Li, Wenji Wang, Zhenzhong Liu, Yongmei Li, Qi Liu, Longcheng Liu   +5 more
doaj   +1 more source

RADIONUCLIDES DISTRIBUTION NEAR FORMER URANIUM MINING

Радиационная гигиена, 2017
The paper shows, that radionuclides from the stony rocks of uranium mines can be leached by atmospheric precipitations. In acid conditions, a degree of leaching is greater.Goal. The aim of this investigation was to study the distribution of radionuclides
D. A. Zaredinov, O. L. Ten, R. I. Radyuk, U. S. Salikhbaev, F. R. Usmanov, A. I. Boltaeva   +5 more
doaj   +1 more source

Porous Organic Polymers: From Molecular Design to Scalable Technologies

Small, Volume 22, Issue 46, 18 August 2026.
This review introduces porous organic polymers (POPs) for a wide range of applications, including energy storage, gas adsorption, catalysts, adsorbents, biomedical applications, sensors, and other exciting fields, and critically analyzes the synthesis and modification, and how structural topology influences the composites' architecture of POPs, along ...
Hossein Mashhadimoslem, Hadi Shayesteh, Simindokht Zarei‐Shokat, Rokhsareh Bakhtiari, Sheyda Abedi‐Banaei, Zahra Sheikhlouiharzand, Parnia Mohebimanesh, Seyed Mohammad Amin Ojagh, Bahareh Bakhtiari, Ali Maleki, Theo G. M. van de Ven, Sohrab Zendehboudi, Ali Elkamel   +12 more
wiley   +1 more source

Investigation on evolution characteristic of dynamic pore and reactive transport of leaching solute in uranium-bearing sandstone during in-situ alkaline leaching mining: An in-situ LF-NMR leaching experiment

Nuclear Engineering and Technology
In-situ uranium leaching involves complex physicochemical interactions critically influencing reservoir permeability and leaching efficiency. This study investigated microstructural changes in uranium-bearing sandstone during alkaline leaching mining ...
Tong Zhang, Xin Yang, Liang Yuan, Xuebin Su, Zhiming Du, Yihan Yang, Ming Tang, Chuanfei Zhang, Peng Qiao, Bingzhang Li   +9 more
doaj   +1 more source