Download or read book The Geochemical and Mineralogical Controls on the Environmental Mobility of Rare Earth Elements from Tailings Nechalacho Deposit Northwest Territories written by and published by . This book was released on 2014 with total page 334 pages. Available in PDF, EPUB and Kindle. Book excerpt: Increased demand for rare earth elements (REEs) for applications in modern technologies has led to an increase in REE exploration. Several deposits are expected to begin mining within a decade, but few studies have examined the possible environmental effects created by these mines. Metal toxicity is thought to be greater in aqueous environments when metals occur as free ions rather than complexes, and the speciation can also impact the treatment technologies utilized to reduce metal concentrations. This research investigates the mineralogical source of REEs and the mechanism of REE mobility in low-temperature waters that have interacted with pilot plant tailings from the Nechalacho deposit, Northwest Territories. The Nechalacho deposit is owned by Avalon Rare Metals Inc. and located approximately 100 km east of Yellowknife. The deposit is hosted within a hydrothermally altered layered nepheline-sodalite syenite in the peralkaline Blatchford Lake complex. The main REE ore minerals are zircon, fergusonite, allanite, monazite, bastnäsite, and synchisite-parasite. Characterization of the tailings using mineral liberation analyzer (MLA) show that the ore minerals are fine grained and well liberated. Bastnäsite and synchisite-parasite are the only potentially soluble ore minerals at low temperature and near-neutral pH. Shake flask experiments were designed to simulate the interaction of tailings with three different leach waters to identify soluble phases and mobile elements. Decanted solutions from the shake flasks were filtered to 0.45um and 0.01um. Speciation modelling of the 0.01um filtrate suggests that carbonate ligands will form the dominant complexes with the REEs, and
Download or read book Studies of Rare metal Deposits in the Northwest Territories written by W. D. Sinclair and published by . This book was released on 1994 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume contains four papers that report on a wide range of geoscientific activities related to various rare-metal deposits in the Northwest Territories. Two papers represent the results of work carried out on the Blatchford Lake intrusive suite and the associated Thor Lake rare-metal deposits of niobium, tantalum, beryllium, yttrium, rare-earth elements, and gallium. A detailed gravity survey and computer modelling provides an understanding of the three dimensional geometry of the 23 km wide Blatchford Lake. Another paper summarizes some of the extensive pegmatite research done by the University of Manitoba in the Northwest Territories during the 1980s, providing information on the geological setting, geochemistry, and economic potential of four previously undocumented or poorly known rare-element pegmatite occurrences at Ayler Lake, Torp Lake, Chantry Inlet, and the Foxe fields in the Rae Province. Another paper presents a thorough documentation of the geological settings, characteristics, and metallogeny of selected mineral occurrences in the southern part of the Proterozoic Great Bear magnetic zone.
Download or read book Characterization of Geochemical and Mineralogical Controls on Metal Mobility in the Prairie Creek Mine Area NWT written by Kristina Skeries and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Guidelines for Tailings Impoundment in the Northwest Territories written by Northwest Territories. Water Board and published by . This book was released on 1987 with total page 39 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Economic Mineralogy of the North T zone Deposit Thor Lake Northwest Territories written by Louise De St. Jorre and published by . This book was released on 1986 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Geochemical Modelling of Environmental Processes in Rare Earth Element Mining written by Alexandra Crawford and published by . This book was released on 2019 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Metal Mobility and Attenuation in Mine Tailings and a Mine Drainage Impacted Aquifer with a Reactive Barrier Sudbury ON written by N. A. Doerr and published by . This book was released on 2003 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Concentrations of metals bound in the solid phase of the Nickel Rim tailings impoundment and downgradient aquifer were measured. Chemical extraction techniques and groundwater sampling, among other techniques, were used to assess the mobility of metals in the Nickel Rim impoundment and aquifer. Emphasis was placed on the effects of geology and a reactive barrier on the solid phase geochemistry of the aquifer. Tailings geochemistry determined by extraction techniques was compared to measurements of mineralogy and pore water chemistry made previously"--Abstract.
Download or read book Towards a Sustainable Approach written by Stephen Hazell and published by [Yellowknife, N.W.T.] : The Committee. This book was released on 1989 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt: Three-part report by the Special Committee on the Northern Economy (SCONE), on the challenges facing the Northwest Territories in developing natural resources: the concept of sustainable development: and recommendations for developing the economy in an intelligent way.
Download or read book Regional Geochemical Reconnaissance written by Y. T. Maurice and published by . This book was released on 1984 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt: This paper presents the results of a lake sediment survey of an area of Precambrian Shield in the Nonacho Lake-East Arm region of Great Slave Lake, Northwest Territories, using a moving average technique to compile geochemical data with the effect of reducing the signal from local features and emphasizing regional trends.
Download or read book Non renewable Resource Development in the Northwest Territories Revenue Sharing and Socio economic Impact Control written by Abrahams, Brian and published by [Yellowknife] : Government of the Northwest Territories. This book was released on 1981 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Biogeochemistry of Trace Metals written by D. C. Adriano and published by . This book was released on 1997-01-01 with total page 432 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Critical Mineral Resources of the United States written by K. J. Schulz and published by Geological Survey. This book was released on 2017 with total page 868 pages. Available in PDF, EPUB and Kindle. Book excerpt: As the importance and dependence of specific mineral commodities increase, so does concern about their supply. The United States is currently 100 percent reliant on foreign sources for 20 mineral commodities and imports the majority of its supply of more than 50 mineral commodities. Mineral commodities that have important uses and face potential supply disruption are critical to American economic and national security. However, a mineral commodity's importance and the nature of its supply chain can change with time; a mineral commodity that may not have been considered critical 25 years ago may be critical today, and one considered critical today may not be so in the future. The U.S. Geological Survey has produced this volume to describe a select group of mineral commodities currently critical to our economy and security. For each mineral commodity covered, the authors provide a comprehensive look at (1) the commodity's use; (2) the geology and global distribution of the mineral deposit types that account for the present and possible future supply of the commodity; (3) the current status of production, reserves, and resources in the United States and globally; and (4) environmental considerations related to the commodity's production from different types of mineral deposits. The volume describes U.S. critical mineral resources in a global context, for no country can be self-sufficient for all its mineral commodity needs, and the United States will always rely on global mineral commodity supply chains. This volume provides the scientific understanding of critical mineral resources required for informed decisionmaking by those responsible for ensuring that the United States has a secure and sustainable supply of mineral commodities.
Download or read book The Rare Earth Elements written by J.H.L. Voncken and published by Springer. This book was released on 2015-12-24 with total page 137 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book deals with the rare earth elements (REE), which are a series of 17 transition metals: scandium, yttrium and the lanthanide series of elements (lanthanum, cerium, praseodymium, neodymium, promethium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium and lutetium). They are relatively unknown to the wider public, despite their numerous applications and their critical role in many high-tech applications, such as high-temperature superconductors, phosphors (for energy-saving lamps, flat-screen monitors and flat-screen televisions), rechargeable batteries (household and automotive), very strong permanent magnets (used for instance in wind turbines and hard-disk drives), or even in a medical MRI application. This book describes the history of their discovery, the major REE ore minerals and the major ore deposits that are presently being exploited (or are planned to be exploited in the very near future), the physical and chemical properties of REEs, the mineral processing of REE concentrates and their extractive metallurgy, the applications of these elements, their economic aspects and the influential economical role of China, and finally the recycling of the REE, which is an emerging field.
Download or read book Hydrothermal Uranium Deposits written by Robert A. Rich and published by Elsevier Science & Technology. This book was released on 1977 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Rare Metal Technology 2020 written by Gisele Azimi and published by Springer Nature. This book was released on 2020-01-20 with total page 379 pages. Available in PDF, EPUB and Kindle. Book excerpt: This collection presents papers from a symposium on extraction of rare metals as well as rare extraction processing techniques used in metal production. Rare metals include strategic metals that are in increasing demand and subject to supply risks. Metals represented include neodymium, dysprosium, scandium and others; platinum group metals including platinum, palladium, iridium, and others; battery related metals including lithium, cobalt, nickel, and aluminum; electronics-related materials including copper and gold; and refectory metals including titanium, niobium, zirconium, and hafnium. Other critical materials such as gallium, germanium, indium and silicon are also included. Papers cover various processing techniques, including but not limited to hydrometallurgy (solvent extraction, ion exchange, precipitation, and crystallization), electrometallurgy (electrorefining and electrowinning), pyrometallurgy, and aeriometallurgy (supercritical fluid extraction). Contributions are focused on primary production as well as secondary production through urban mining and recycling to enable a circular economy. A useful resource for all involved in commodity metal production, irrespective of the major metal Provides knowledge of cross-application among industries Extraction and processing of rare metals that are the main building block of many emerging critical technologies have been receiving significant attention in recent years. The technologies that rely on critical metals are prominent worldwide, and finding a way to extract and supply them effectively is highly desirable and beneficial.
Download or read book Trace Elmts in Soil Plants written by Alina Kabata-Pendias and published by Springer. This book was released on 1984-07-24 with total page 344 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Uranium for Nuclear Power written by Ian Hore-Lacy and published by Woodhead Publishing. This book was released on 2016-02-19 with total page 490 pages. Available in PDF, EPUB and Kindle. Book excerpt: Uranium for Nuclear Power: Resources, Mining and Transformation to Fuel discusses the nuclear industry and its dependence on a steady supply of competitively priced uranium as a key factor in its long-term sustainability. A better understanding of uranium ore geology and advances in exploration and mining methods will facilitate the discovery and exploitation of new uranium deposits. The practice of efficient, safe, environmentally-benign exploration, mining and milling technologies, and effective site decommissioning and remediation are also fundamental to the public image of nuclear power. This book provides a comprehensive review of developments in these areas. Provides researchers in academia and industry with an authoritative overview of the front end of the nuclear fuel cycle Presents a comprehensive and systematic coverage of geology, mining, and conversion to fuel, alternative fuel sources, and the environmental and social aspects Written by leading experts in the field of nuclear power, uranium mining, milling, and geological exploration who highlight the best practices needed to ensure environmental safety
