PDF

Isotopic Evidence for Reductive Immobilization of Uranium Across a Roll-Front Mineral Deposit.

Shaun T. Brown, Anirban Basu

2016enuraniumisotopesmineralenvironmentalattenuation

Abstract

Language:

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 Wyoming, USA, where economic U deposits occur in the Paleocene Fort Union formation. To evaluate the fate of aqueous U in and adjacent to the ore body, we investigated the chemical composition and isotope ratios of groundwater samples from the roll-front type ore body and surrounding monitoring wells of a previously mined area. The 238U/235U of groundwater varies by approximately 3 ‰ and is correlated with U concentrations. Fluid samples down-gradient of the ore zone are the most depleted in 238U and have the lowest U concentrations. Activity ratios of 234U/238U are ~5.5 up-gradient of the ore zone, ~1.0 in the ore zone, and between 2.3 and 3.7 in the down-gradient monitoring wells. High-precision measurements of 234U/238U and 238U/235U allow for development of a conceptual model that evaluates both the migration of U from the ore body and the extent of its concentration between the ore zone and the down-gradient sampling location.

Download

Cite This Work

@article{8d067f12-d06e-447c-8564-28b23717df5c,
  title={Isotopic Evidence for Reductive Immobilization of Uranium Across a Roll-Front Mineral Deposit.},
  author={Shaun T. Brown and Anirban Basu},
  year={2016},
  language={en}
}
TY  - JOUR
TI  - Isotopic Evidence for Reductive Immobilization of Uranium Across a Roll-Front Mineral Deposit.
AU  - Shaun T. Brown
AU  - Anirban Basu
PY  - 2016
LA  - en
ER  -

Similar Items

Plant auditing: a powerful tool for improving metallurgical plant performance

Deepak Malhotra

This work discusses the essential components of a rigorous auditing process aimed at enhancing metallurgical plant performance. The objective is to id

2015enPDF

THE FUTURE OF ELECTRONIC WASTE RECYCLING IN THE UNITED STATES: Obstacles and Domestic Solutions

Jennifer Namias, Dr. Nickolas J. Themelis

This study explores the future of electronic waste recycling in the United States, addressing the challenges and proposing domestic solutions. The rap

2013enPDF

Technological and Environmental Aspects of Nickel Production in Serbia

Željko Kamberović, Marija Korać

Demand for nickel is constantly growing due to the versatility of its application, at the first place for stainless steel production. Ore reserves and

2014enPDF

Metal Casting Processes

Unknown, Unknown

This chapter discusses metal casting processes, highlighting the diversity and common characteristics among them. The objective is to elucidate the fu

2023enPDF

Artificial intelligence-aided materials design: AI-algorithms and case studies on alloys and metallurgical processes

Rajesh Jha, Bimal Kumar Jha

This book describes the application of artificial intelligence (AI) and machine learning (ML) concepts to develop predictive models that can be used t

2022enPDF

Metallurgical Plant Design and Operating Strategies

The Australasian Institute of Mining and Metallurgy

This conference, held in Perth, Western Australia, focuses on the latest advancements in metallurgical processing plant design and operational strateg

2006enPDF