Solubility of Uranium in Hydrothermal Fluids at 25° to 300°C PDF Download
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Author: Evgeniy N. Bastrakov
Publisher:
ISBN: 9781921781285
Category : Uranium ores
Languages : en
Pages : 91
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Book Description
"The present report provides a compilation of thermodynamic data for geologically relevant uranium species suitable for geochemical equilibrium calculations from low to moderate temperatures (up to 300°C). It also reports a set of diagrams displaying the solubility of key uranium ore minerals (uraninite, coffinite and carnotite) and the stability of uranium and vanadium complexes at temperatures between 25° and 300°C. Further, it discusses mass-balance calculations of fluid-rock reactions at temperatures up to 200°C relevant to understanding the behaviour of uranium in unconformity-related uranium and sediment-hosted stratiform copper-uranium deposits." --Online abstract.
Author: Evgeniy N. Bastrakov
Publisher:
ISBN: 9781921781285
Category : Uranium ores
Languages : en
Pages : 91
Get Book Here
Book Description
"The present report provides a compilation of thermodynamic data for geologically relevant uranium species suitable for geochemical equilibrium calculations from low to moderate temperatures (up to 300°C). It also reports a set of diagrams displaying the solubility of key uranium ore minerals (uraninite, coffinite and carnotite) and the stability of uranium and vanadium complexes at temperatures between 25° and 300°C. Further, it discusses mass-balance calculations of fluid-rock reactions at temperatures up to 200°C relevant to understanding the behaviour of uranium in unconformity-related uranium and sediment-hosted stratiform copper-uranium deposits." --Online abstract.
Author: Elizabeth Helen Bailey
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
Author: Joseph Jacob Katz
Publisher:
ISBN:
Category : Uranium
Languages : en
Pages : 448
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Book Description
Author: D. R. Kalkwarf
Publisher:
ISBN:
Category : Radioactive substances
Languages : en
Pages : 90
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Book Description
Author: K. B. Brown
Publisher:
ISBN:
Category : Uranium
Languages : en
Pages : 27
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Book Description
Author: Noah Frederick van Hartesveldt
Publisher:
ISBN:
Category :
Languages : en
Pages : 39
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Book Description
The traditional paradigm declares tetravalent uranium to be immobile under reducing conditions – an assumption widely employed for nuclear waste management strategies. In contrast, experiments presented here demonstrate this assumption, although valid for low temperatures, can be erroneous for high temperature natural systems. This project focuses on the ability of sulfate-bearing solutions to transport uranium at reduced conditions and elevated temperatures, identifies the new species U(OH)2SO4, derives thermodynamic constants necessary for modeling, and expands the quantifiable range of U4+ mobility to more neutral pH conditions. The data obtained enable more accurate assessment of uranium mobility by updating the existing uranium thermodynamic databases and is applicable to uranium fluid transport in ore-forming systems and nuclear waste repositories.
Author: Kaija Ollila
Publisher:
ISBN:
Category :
Languages : en
Pages : 42
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Book Description
Author: Christine A. Casaceli
Publisher:
ISBN:
Category : Pulmonary toxicology
Languages : en
Pages : 262
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Book Description
Author: Neil Phillips
Publisher: Springer Nature
ISBN: 981163081X
Category : Science
Languages : en
Pages : 294
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Book Description
This book addresses the origin of gold deposits to answer questions of science and curiosity. These answers contribute in turn to the improved exploration and mining of gold. Initially there is a summary of the methods used to address the genesis of gold deposits including some of the essential science and concepts. Five basic observations follow that apply to many gold deposits and need to be considered in any genetic ideas. Magmatic processes enriching gold are discussed followed by the role of aqueous fluids during gold deposit formation at elevated temperatures and pressures. Modifying effects after deposit formation include high-grade metamorphism, retrogression, weathering, and erosion. The main types of gold deposits are then explained within the spectrum of viable genetic ideas, with informal names for these examples that include gold-only, gold-plus, Carlin, slate-belt, epithermal, porphyry, iron oxide copper gold, and Archean greenstone. Case histories are included in which the role of gold geology contributed directly to discoveries—one example is at the province-scale and another at the goldfield-scale. Unlike other books on the subject, this one addresses virtually all gold deposit types rather than focusing on one type in isolation. The primary readership includes industry geologists, senior undergraduates, postgraduates, and those with some knowledge of science and an interest in the gold industry.
Author: F.G.H. Blyth
Publisher: CRC Press
ISBN: 0080523730
Category : Technology & Engineering
Languages : en
Pages : 336
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Book Description
No engineering structure can be built on the ground or within it without the influence of geology being experienced by the engineer. Yet geology is an ancillary subject to students of engineering and it is therefore essential that their training is supported by a concise, reliable and usable text on geology and its relationship to engineering. In this book all the fundamental aspects of geology are described and explained, but within the limits thought suitable for engineers. It describes the structure of the earth and the operation of its internal processes, together with the geological processes that shape the earth and produce its rocks and soils. It also details the commonly occurring types of rock and soil, and many types of geological structure and geological maps. Care has been taken to focus on the relationship between geology and geomechanics, so emphasis has been placed on the geological processes that bear directly upon the composition, structure and mechanics of soil and rocks, and on the movement of groundwater. The descriptions of geological processes and their products are used as the basis for explaining why it is important to investigate the ground, and to show how the investigations may be conducted at ground level and underground. Specific instruction is provided on the relationship between geology and many common activities undertaken when engineering in rock and soil.
