Incorporation of actinides into iron (oxyhydr) oxides: A long-term environmental barrier to radionuclide migration

O Stagg, K Morris, LT Townsend, ES Ilton… - Applied …, 2023 - Elsevier
Iron (oxyhydr) oxide minerals are ubiquitous in the sub-surface environment (eg soils and
sediments) and have the potential to act as a long-term barrier to the migration of …

Hematite U-Pb dating of Snowball Earth meltwater events

L Courtney-Davies, RM Flowers, CS Siddoway… - Proceedings of the …, 2024 - pnas.org
The Snowball Earth hypothesis predicts global ice cover; however, previous descriptions of
Cryogenian (720-635 Ma) glacial deposits are limited to continental margins and shallow …

Mineralogy and Distribution of REE in Oxidised Ores of the Mount Weld Laterite Deposit, Western Australia

NJ Cook, CL Ciobanu, BP Wade, SE Gilbert, R Alford - Minerals, 2023 - mdpi.com
The Mount Weld rare earth element (REE) deposit, Western Australia, is one of the largest of
its type on Earth. Current mining exploits the high-grade weathered goethite-bearing …

Cation inversion in slag magnetite: Energy loss measurements of Fe-L3 edge shift between atom columns

H Gezzaz, CL Ciobanu, A Slattery, NJ Cook… - Materials …, 2023 - Elsevier
Determination of cation disorder in inverse spinels like magnetite, Fe 3 O 4, is of broad
interest for applications in green technologies, storage devices, and nuclear waste …

Incorporation of rare earth elements Sc, Y and La into gibbsite

X Zhao, TR Guillen, TR Graham, P Chen, Y Zhao… - Chemical Engineering …, 2024 - Elsevier
Rare earth elements (REE) are increasingly critical resources in technological applications,
but the current understanding of their separation by uptake into minerals remains limited …

Mechanism of Reduction of Aqueous U(V)-dpaea and Solid-Phase U(VI)-dpaea Complexes: The Role of Multiheme c-Type Cytochromes

M Molinas, KL Meibom, R Faizova… - Environmental …, 2023 - ACS Publications
The biological reduction of soluble U (VI) complexes to form immobile U (IV) species has
been proposed to remediate contaminated sites. It is well established that multiheme c-type …

Exploring the Valence Diversity of Uranium by Flux Growth of Uranium Silicate under Inert Atmosphere

X Zhang, T Bo, Z Huang, Z Zhou, K Hu, W Shi… - Inorganic …, 2024 - ACS Publications
The attributes of good solubility and the redox-neutral nature of molten salt fluxes enable
them to be useful for the synthesis of novel crystalline actinide compounds. In this work, a …

Unusual redox stability of pentavalent uranium with hetero-bifunctional phosphonocarboxylate: insight into aqueous speciation

A Srivastava, SM Ali, RMR Dumpala, S Kumar… - Dalton …, 2024 - pubs.rsc.org
The+ 5 state is an unusual oxidation state of uranium due to its instability in the aqueous
phase. As a result, gaining information about its aqueous speciation is extremely difficult …

[HTML][HTML] Electronic structure simulations in the cloud computing environment

EJ Bylaska, A Panyala, NP Bauman, B Peng… - The Journal of …, 2024 - pubs.aip.org
The transformative impact of modern computational paradigms and technologies, such as
high-performance computing (HPC), quantum computing, and cloud computing, has opened …

Pedogenic continental red beds: How, why and when red? Redox geochemistry and quantitative colour analysis of the Old Red Sandstone, South Wales, UK

O Bábek, L Ackerman, D Šimíček, VP Wright… - … - Wiley Online Library
Continental red beds are coloured by secondary Fe (III)‐oxy‐hydroxides (mainly hematite)
which makes them excellent archives of ancient near‐surface redox conditions. However …