Download or read book Uranium Exploration in Athabasca Basin Saskatchewan Canada written by Geological Survey of Canada and published by Geological Survey of Canada. This book was released on 1983 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bulletin written by Geological Survey of Canada and published by . This book was released on 1950 with total page 660 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book EXTECH IV written by Charlie W. Jefferson and published by . This book was released on 2007-01-01 with total page 644 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Midwest Uranium Mine Project Cigar Lake Uranium Mine Project Cumulative Observations written by Joint Federal-Provincial Panel on Uranium Mining Developments in Northern Saskatchewan (Canada) and published by Panel Publishers. This book was released on 1997 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Uranium Mining Development in Northern Saskatchewan written by Joint Federal-Provincial Panel on Uranium Mining Developments in Northern Saskatchewan (Canada) and published by . This book was released on 1993 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Uranium Exploration in Athabasca Basin written by Geological Survey of Canada and published by . This book was released on 1983 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Exhaustible Resources and Economic Growth written by Harry F. Campbell and published by Ottawa, Ont. : Economic Council of Canada. This book was released on 1984 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt: Examines the effect of a booming natural resource sector on regional economic growth, with particular attention to the impact of regional government policy on mineral rent taxation and the allocation of resource revenues. Documents relevant theory and applies it to the case of the uranium industry in Saskatchewan.
Download or read book Uranium Deposits of the Athabasca Basin Saskatchewan written by T. I. I. Sibbald and published by . This book was released on 1990 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Application of Seismic and Audiomagnetotelluric Methods to Uranium Exploration in the Athabasca Basin written by Saskatchewan. Saskatchewan Industry and Resources and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book 236U In Situ Production in High Grade Mineralization at Cigar Lake Athabasca Basin Northern Saskatchewan written by Maria Stefanescu and published by . This book was released on 2018 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Canada accounts for 15% of the world's uranium production (World Nuclear Association). The Athabasca Basin in northern Saskatchewan Canada contains a number of high grade, uranium ore deposits which occur at, or immediately below, an unconformity between Archean and Paleoproterozoic metasediments and intrusive rocks and overlying Proterozoic sandstones. The uranium ores are largely composed of high concentrations of uraninite and Pitchblende with naturally occurring 238U/235U ratios. U- 236 (half-life of 23.42 Myr) will be produced when 235U absorbs a neutron and the nucleus does not fission. Because it is so long lived, a small amount 236U can be maintained at equilibrium levels in the natural uranium ores. One of the main questions of this research is whether or not these equilibrium levels reflect higher grades or larger amounts of uranium minerals as a result of elevated neutron fluxes from 238U and subsequent neutron absorption on 235U. As well, are there other elements within the system that will absorb these neutrons, thereby reducing that which will impinge on 235U. In this study, we have estimated the amount of 236U that is produced by calculating the neutron flux from uranium and evaluating the effects of spatially related elements such as B, Sm and Gd using their elemental neutron cross- sections and abundances. In this project we have calculated and simulated theoretically the production of 236U and then test the theoretical calculations using measurements of uranium isotopes by accelerator mass spectrometry (AMS). Once we understand the factors controlling the 236U concentration, we hypothesize that the relationship between 236U and 238U can be used as a geochemical vector within uranium exploration, with the equilibrium level possibly distinguishing between primary mineralization and remobilization and reprecipitation of this U within spatially associated secondary U mineralization.
Download or read book Geochemical and Microbial Assessment of the Unconformity related Uranium Prospectivity of the Hawk Reapids Area Southeastern Athabasca Basin Canada written by and published by . This book was released on 2014 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hawk Rapids is a uranium exploration project located in the southeastern part of the Athabasca Basin, in Saskatchewan, Canada. Geochemical and mineralogical assessments of drill core from Hawk Rapids were used to evaluate the possibility of an unconformity-related uranium deposit occurring within the area. The mineral evolution of this area spans the pre-Athabasca Basin period through diagenesis to post hydrothermal alteration events. Pre-Athabasca alteration is characterized by muscovite and clinochlore while early to late diagenesis is represented by early hematite, quartz overgrowths, dickite and illite. These events were followed by dravite, both in the basement and sandstone units, kaolinite, pyrite, minor coffinite, uraninite, and siderite, which mark the hydrothermal evolution of the area. Post-hydrothermal activity is marked by the late influx of meteoric water, which resulted in formation of late kaolinite. The alteration fluids at Hawk Rapids have three distinct isotopic compositions associated with these stages of evolution. The fluid in equilibrium with pre-Athabasca alteration minerals has an isotopic composition similar to that of modified seawater or low latitude meteoric waters. Basinal brines with a meteoric component characterize the fluid in equilibrium with illite, which represents the diagenetic mineral assemblage. The precipitation of dravite in the hydrothermal stage records a mixture of both basement modified and basinal brines. Radiogenic Pb leached from the drill core samples at Hawk Rapids was derived from both internal and external sources. The breakdown of uranium-rich heavy minerals such as apatite, zircon and monazite make up the internal sources while other uranium-rich sources such as possible proximal uranium deposits constitute external sources. Microbial methane production coupled with methane consumption (microbial methane oxidation) are the major microbial activities associated with unconformity-related uranium at Hawk Rapids. The activities of these microbes are most pronounced near the unconformity where there is secondary dispersion of uranium and associated pathfinder elements that serve as nutrients. This work shows that the integration of both geochemical and mineralogical data is an effective tool in evaluating the prospectivity of an area for possible unconformity-related uranium deposits.
Download or read book EXTECH IV Athabasca Uranium Multidisciplinary Study of Northern Saskatchewan and Alberta Part 3 written by and published by . This book was released on 2003 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt: The EXTECH IV study aims to enhance the four-dimensional geoscience knowledge base of the Athabasca Basin of northern Saskatchewan & Alberta and to develop new exploration methods for deep uranium deposits. The study comprises 15 sub-projects. This paper summarizes goals, strategies, and results for 2002-03 for sub-projects 6, 6a, 7, 9, 10, & 11. Topics covered in these sub-projects are: gamma ray geophysical surveys; surficial geology of the Basin; clay mineral studies; magnetotellurics as an exploration tool for detecting graphitic material associated with deep uranium ore; high-resolution gravity surveys; and geochronology of Athabasca uranium.
Download or read book Progress Report of EXTECH IV Seismic Investigations in the Athabasca Basin Saskatchewan Alberta written by Don J. White and published by Natural Resources Canada. This book was released on 2002 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt: EXTECH-IV is a multidisciplinary study designed to improve the geoscience framework and develop exploration technology for unconformity-type uranium deposits of the Athabasca Basin. This paper reports on the seismic reflection & auxiliary downhole seismic surveys conducted within the McArthur River mining camp, Saskatchewan, as part of the study. It describes the acquisition of the seismic data sets, the objectives of each of the surveys, and some preliminary results for the two-dimensional high-resolution survey and the high-frequency vertical seismic profile.
Download or read book Geology of the Uranium Deposits Related to the Sub Athabasca Unconformity Saskatchewan written by Leo Paul Tremblay and published by . This book was released on 1982 with total page 138 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this paper is to describe the main characteristics of the uranium deposits related to the Athabasca basin as presently known, to define the characteristics of each type or group, to compare the main types with one another, and to attempt a classification.
Download or read book 236U In Situ Production in High Grade Mineralization at Cigar Lake Athabasca Basin Northern Saskatchewan written by Maria Stefanescu (M.Sc.) and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Canada accounts for 15% of the world's uranium production (World Nuclear Association). The Athabasca Basin in northern Saskatchewan Canada contains a number of high grade, uranium ore deposits which occur at, or immediately below, an unconformity between Archean and Paleoproterozoic metasediments and intrusive rocks and overlying Proterozoic sandstones. The uranium ores are largely composed of high concentrations of uraninite and Pitchblende with naturally occurring 238U/235U ratios. U- 236 (half-life of 23.42 Myr) will be produced when 235U absorbs a neutron and the nucleus does not fission. Because it is so long lived, a small amount 236U can be maintained at equilibrium levels in the natural uranium ores. One of the main questions of this research is whether or not these equilibrium levels reflect higher grades or larger amounts of uranium minerals as a result of elevated neutron fluxes from 238U and subsequent neutron absorption on 235U. As well, are there other elements within the system that will absorb these neutrons, thereby reducing that which will impinge on 235U. In this study, we have estimated the amount of 236U that is produced by calculating the neutron flux from uranium and evaluating the effects of spatially related elements such as B, Sm and Gd using their elemental neutron cross- sections and abundances. In this project we have calculated and simulated theoretically the production of 236U and then test the theoretical calculations using measurements of uranium isotopes by accelerator mass spectrometry (AMS). Once we understand the factors controlling the 236U concentration, we hypothesize that the relationship between 236U and 238U can be used as a geochemical vector within uranium exploration, with the equilibrium level possibly distinguishing between primary mineralization and remobilization and reprecipitation of this U within spatially associated secondary U mineralization.
Download or read book Rabbit Lake Uranium Mining A zone D zone Eagle Point written by Canada. Environmental Assessment Panel and published by . This book was released on 1993 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt: Examination of the environmental, health, safety and socioeconomic impacts of the proposed development of uranium mining at Rabbit Lake in northern Saskatchewan.
Download or read book Investigating Modelling and Inversion Techniques for Overburden Stripping for Uranium Exploration in the Athabasca Basin Canada written by Mahrdad Darijani and published by . This book was released on 2020 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The major investment in exploration for uranium in Canada is in one of the most important structural corridors of the eastern Athabasca Basin, extending from the Millennium deposit to the McArthur River deposit (called the McArthur-Millennium corridor). This corridor hosts the largest and highest-grade uranium deposits in the world (at a depth of more than 500 m), and it will be the focus of exploration activity by companies (e.g., Cameco) in the Athabasca Basin for many years. In the McArthur-Millennium corridor, people have wondered about how to better detect structures (e.g., alteration zones) associated with the (volumetrically) small uranium mineralization at depth using geophysical methods. But the geophysical responses (e.g., the gravity response) of these structures can be masked by the variation of the overburden thicknesses. Some geophysical attempts have been made to remove the overburden signature and to find the alteration zones, but none of them have got very far. To solve this problem, I investigate developing new methodology as well as new exploration methods in the region to find and remove the overburden signature to explore for new deposits. In this dissertation, I investigate new ways to separate the overburden contribution from geophysical data (via modelling and inversion) so that deeper targets (e.g. an alteration zone) can be detected and delineated by means of an innovative application of new, modern, state-of-the-art modelling and (constrained and joint) inversion of geophysical methods such as seismic refraction, gravity, magnetic and electromagnetic methods. These new methods and investigations (e.g., modelling and constrained joint inversions using the fuzzy c-mean method on tetrahedral meshes) bring us much closer to solving the problem in this corridor. This research project is a part of the CMIC Footprints project, and is a very challenging exploration problem and very useful if successful for many places in Canada, not just the Athabasca Basin and uranium exploration. The Athabasca Basin is a Proterozoic sedimentary basin which supplies around 20% of the world's uranium. The uranium deposits are surrounded by alteration zones near the unconformity between Proterozoic sedimentary rocks and the Archean and Aphebian metamorphic basement. The sedimentary rocks are covered by Quaternary glacial deposits. Because of the small size of uranium deposits and their location at depth, geophysical methods look for structures which host the uranium deposits, for example, electromagnetic (EM) methods can locate graphitic faults. The gravity method can potentially detect the alteration zones. The seismic method can image the unconformity and basement faults. And, magnetic data can delineate basement structures. The benefit of using multiple datatypes can provide complementary information (e.g. the seismic and gravity). These methods can be used for the overburden stripping as well. In the Athabasca Basin, overburden can be conductive while density and seismic velocity of the overburden is less than the sandstone. Some rocks in unconsolidated glacial deposits have magnetic susceptibilities (e.g. granite), whereas sandstone is non-magnetic. Based on these features, the synthetic modelling and inversion of the geophysical data are performed for (mainly) the overburden characterization as well as reconstructing the geological structure in depth. Magnetic, gravity, first-arrival seismic traveltimes and time- and frequency-domain electromagnetic data are synthetized using forward modelling of 2D and 3D models. For inversion methods, independent, joint and constrained methods are applied for 1D, 2D and 3D cases. Independent inversions of the seismic refraction data as well as the electromagnetic data are useful methods for reconstructing the base of the overburden, unlike the independent inversions of gravity and magnetic data. The joint inversion of gravity and seismic refraction data is able well to reconstruct the variable thickness of the overburden better and sharper than the independent inversions. After applying the thickness of the overburden (obtained from the joint inversion) in the constrained independent inversion of gravity data, the location of alteration zone is apparent at depths. The joint inversion of magnetic and gravity data was able to reconstruct the basement blocks, the sandstone and the unconformity; furthermore the base of overburden can be detected after using the constrained joint inversion of magnetic and gravity methods. This method cannot show the alteration zone, but it can show the intersection of the fault with the unconformity where the mineralization can occur. For the electromagnetic method, results show that frequency and time-domain methods can be used for determining the location of the interface between overburden and sandstone and the location of the graphitic faults, respectively.
