Fluid inclusion, stable and radiogenic isotope, and geochronological investigation of the polymetallic “five-element” vein deposit at the Eldorado Mine, Port Radium, Northwest Territories, Canada

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dc.contributor.advisor Hanley, Jacob James, 1976-
dc.creator Trottier, Corwin
dc.date.accessioned 2019-09-06T13:51:19Z
dc.date.available 2019-09-06T13:51:19Z
dc.date.issued 2019
dc.identifier.other QE446 N7 T76 2019
dc.identifier.uri http://library2.smu.ca/handle/01/29011
dc.description 186 leaves : illustrations (chiefly colour), colour maps ; 29 cm
dc.description Includes abstract and appendix.
dc.description Includes bibliographical references.
dc.description.abstract Uranium-rich, polymetallic &ldquo;five-element&rdquo; (Ni-Co-As-Bi-Ag) veins at the Eldorado Mine were investigated using complementary microanalytical techniques with the goal to improve understanding of the origins of fluids and metals, and timing of vein formation. Fluid inclusion assemblages record overall variability in mineralization P-T conditions from 100&ndash;300 &deg;C, and up to 135 MPa. Mineralizing fluids carry the chemical signature of a highly saline brine, derived from evaporated, modified seawater: ~20&ndash;35 wt.% NaCl + CaCl<sub>2</sub> equivalent bulk salinity, and molar Cl/Br of ~230 during arsenide-stage mineralization and ~125 during sulphide-stage mineralization. The basinal brine was likely introduced from the 1740&ndash;1270 Ma Hornby Bay Basin. Arsenide mineralization is constrained at 1442 &plusmn; 36 Ma by U-Pb geochronology of coeval hydrothermal xenotime. <sup>87</sup>Sr/<sup>86</sup>Sr values of 0.7046&ndash;0.7239 for vein carbonates conforms to a similar range of values in host rocks (ca. 1440 Ma), suggesting significant fluid-rock interaction and alteration of wall-rock. en_CA
dc.language.iso en en_CA
dc.publisher Halifax, N.S. : Saint Mary's University
dc.subject.lcc QE446.N7
dc.subject.lcsh Ore deposits -- Northwest Territories -- Port Radium
dc.subject.lcsh Veins (Geology) -- Northwest Territories -- Port Radium
dc.subject.lcsh Petrology -- Northwest Territories -- Port Radium
dc.subject.lcsh Paragenesis
dc.title Fluid inclusion, stable and radiogenic isotope, and geochronological investigation of the polymetallic “five-element” vein deposit at the Eldorado Mine, Port Radium, Northwest Territories, Canada en_CA
dc.type Text en_CA
thesis.degree.name Master of Science in Applied Science
thesis.degree.level Masters
thesis.degree.discipline Geology
thesis.degree.grantor Saint Mary's University (Halifax, N.S.)


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