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dc.contributor.authorJoyce, Nicholasen
dc.date2016-10-19 00:00:45.442
dc.date.accessioned2016-10-25T17:41:30Z
dc.date.issued2016-10-25
dc.identifier.urihttp://hdl.handle.net/1974/15204
dc.descriptionThesis (Master, Geological Sciences & Geological Engineering) -- Queen's University, 2016-10-19 00:00:45.442en
dc.description.abstractThe chemical compositions, modal mineralogy, and textural variability of interstitial minerals in sandstones of the Athabasca Group strata in the vicinity of the McArthur River unconformity-related uranium deposit were characterized using a combination of short wave infrared spectroscopy (SWIR), lithogeochemistry, scanning electron microscopy (SEM), electron probe microanalysis (EPMA) and laser ablation mass spectrometry (LA-ICP-MS) to determine the residence sites of pathfinder trace elements. The importance of integrating in-situ mineral chemistry with whole-rock analyses resides in the possibility to establish the mineralogical and paragenetic context of geochemical signatures in defining the footprint of the deposit. Located in the Athabasca Basin, Saskatchewan, Canada, the deposit is situated below ~550 m of quartz arenitic sandstones that are strongly silicified between depths of approximately 200-400 m. The silicified layer exhibits significant control on the distribution of alteration minerals, and appears to have restricted both the primary and secondary dispersion of pathfinder trace elements, which include U, radiogenic Pb isotopes, V, Ni, Co, Cu, Mo, As, Zn, and REEs. Diagenetic background sandstones contain assemblages of illite, dickite, aluminum-phosphate-sulfate (APS) minerals, apatite, and Fe-Ti oxide minerals. Altered sandstones contain assemblages of Al-Mg chlorite (sudoite), alkali-deficient dravite, APS minerals, kaolinite, illite, and oxide minerals. Throughout the sandstones, APS minerals account for the majority of the Sr and LREE concentrations, whereas late pre-ore chlorite, containing up to 0.1 wt.% Ni, accounts for the majority of Ni concentrations. Cobalt, Cu, Mo, and Zn occur predominantly in cryptic sub-micron sulfide and sulfarsenide inclusions in clay mineral aggregates and in association with paragenetically-late Fe-Ti oxides. Uranium occurs predominantly in cryptic micro-inclusions associated with pyrite in late-stage quartz overgrowths, and with paragenetically late Fe-Ti oxide micro-inclusions in kaolinite. Additionally, up to 0.2 wt.% U is cryptically distributed in post-ore Fe-oxide veins. Early diagenetic apatite, monazite and apatite inclusions in detrital quartz, and detrital zircon also contribute significant U and HREE to samples analyzed with an aggressive leach such as Aqua Regia. Detailed LA-ICP-MS chemical mapping of interstitial assemblages, detrital grains, and cements provides new insights into the distribution and inventory of pathfinder elements in the footprint of the McArthur River uranium deposit.en
dc.language.isoengen
dc.relation.ispartofseriesCanadian thesesen
dc.rightsQueen's University's Thesis/Dissertation Non-Exclusive License for Deposit to QSpace and Library and Archives Canadaen
dc.rightsProQuest PhD and Master's Theses International Dissemination Agreementen
dc.rightsIntellectual Property Guidelines at Queen's Universityen
dc.rightsCopying and Preserving Your Thesisen
dc.rightsCreative Commons - Attribution - CC BYen
dc.rightsThis publication is made available by the authority of the copyright owner solely for the purpose of private study and research and may not be copied or reproduced except as permitted by the copyright laws without written authority from the copyright owner.en
dc.subjectLA-ICP-MSen
dc.subjectGeochemistryen
dc.subjectMineral Explorationen
dc.subjectMcArthur Riveren
dc.subjectEconomic Geologyen
dc.subjectAthabasca Basinen
dc.subjectPathfinder Elementsen
dc.subjectUraniumen
dc.titleAlteration mineralogy and pathfinder element inventory of the McArthur River unconformity-related uranium deposit, Canadaen
dc.typethesisen
dc.description.restricted-thesisUnder CA as required by CMIC-NSERC project. For more information, please contact Dr. Dan Layton-Matthews, GEOL.en
dc.description.degreeM.A.Sc.en
dc.contributor.supervisorLayton-Matthews, Danielen
dc.contributor.supervisorKyser, T. Kurtisen
dc.contributor.departmentGeological Sciences and Geological Engineeringen
dc.embargo.terms1825en
dc.embargo.liftdate2021-10-24
dc.degree.grantorQueen's University at Kingstonen


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