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$Fayek & Kyser 2000 uraninite fractionations.pdf - Queen's University$

APPENDIX F Results of the electron microprobe analyses for different uraninite occurrences in the Beaverlodge area: average chemical composition and calculated chemical Pb age. Note: the composition is reported in weight percent and the age in Ma Sample ID. Deposit UO 2 SiO 2 CaO Fe 2O 3 TiO 2 Cr 2O 3 V 2O 5 PbO P 2O 5 K 2O ThO 2 SO 2 MnO Y 2O 3 Tb 2O 3 CuO Total Chemical Pb age (Ma) Early tensional vein type-uraninite 6122_Pt2 1 Ace Fay 71.83 2.02 3.61 0.39 0.40 0.03 0.11 17.88 0.02 0.03 0.02 0.05 0.12 0.00 0.14 0.03 96.50 1544 6122_Pt3 1 Ace Fay 73.07 3.05 3.45 0.91 0.38 0.05 0.03 14.52 0.04 0.10 0.02 0.02 0.15 0.07 0.11 0.07 95.90 1233 6122_Pt4_2 Ace Fay 72.61 0.59 3.33 0.31 0.65 0.02 0.04 17.42 0.03 0.02 0.02 0.03 0.18 0.04 0.02 0.00 95.29 1488 6122_Pt5_1 Ace Fay 71.65 0.46 2.32 0.11 0.38 0.04 0.06 19.91 0.02 0.05 0.01 0.01 0.07 0.09 0.01 0.02 95.10 1724 6122_Pt10 1 Ace Fay 73.64 9.89 2.48 1.14 1.36 0.28 0.23 1.90 0.36 0.06 0.01 0.03 0.36 0.08 0.20 0.05 91.80 160 Gunnar type-uraninite 6134 pt2 1 Gunnar 77.59 3.01 5.35 0.15 0.06 0.01 0.04 0.07 0.12 0.14 0.01 0.01 0.03 0.02 0.07 0.04 86.61 5 6134 pt2 2 Gunnar 80.25 3.04 5.60 0.23 0.03 0.01 0.09 0.12 0.00 0.08 0.03 0.00 0.08 0.04 0.06 0.04 89.46 9 6134 pt2 3 Gunnar 78.63 3.65 5.19 1.65 0.33 0.01 0.06 0.00 0.06 0.07 0.02 0.02 0.06 0.00 0.07 0.12 89.78 0 6134 pt2 4 Gunnar 78.36 3.72 5.28 1.82 0.44 0.05 0.02 0.03 0.06 0.06 0.05 0.02 0.06 0.01 0.05 0.02 89.85 2 6134 pt3 Gunnar 77.88 4.95 5.57 0.19 0.37 0.01 0.01 0.12 0.05 0.07 0.03 0.01 0.09 0.01 0.08 0.01 89.33 9 6134 pt3 1 Gunnar 79.27 3.95 5.52 0.15 0.01 0.03 0.04 0.11 0.08 0.08 0.04 0.01 0.03 0.00 0.04 0.02 89.22 9 6134 pt3 2 Gunnar 81.64 3.39 4.56 0.16 0.00 0.12 0.07 0.03 0.05 0.06 0.04 0.00 0.07 0.03 0.08 0.05 90.13 2 6134 pt3 3 Gunnar 79.50 3.78 5.54 0.11 0.06 0.04 0.02 0.06 0.09 0.06 0.02 0.00 0.04 0.00 0.06 0.01 89.23 4 261
Sample ID. Deposit UO 2 SiO 2 CaO Fe 2O 3 TiO 2 Cr 2O 3 V 2O 5 PbO P 2O 5 K 2O ThO 2 SO 2 MnO Y 2O 3 Tb 2O 3 CuO Total Chemical Pb age (Ma) 6134 pt4 1 Gunnar 80.77 3.52 5.67 0.23 0.01 0.01 0.00 0.13 0.01 0.07 0.03 0.01 0.09 0.04 0.01 0.04 90.58 10 6134 pt4 2 Gunnar 79.52 3.13 5.90 0.26 0.13 0.01 0.03 0.09 0.07 0.05 0.00 0.03 0.07 0.01 0.03 0.01 89.31 7 6134 pt4 3 Gunnar 81.29 2.79 5.67 0.20 0.03 0.00 0.02 0.16 0.01 0.05 0.02 0.00 0.07 0.03 0.04 0.02 90.29 12 6134 pt5 1 Gunnar 81.39 2.70 5.41 0.13 0.00 0.04 0.00 0.11 0.04 0.06 0.07 0.00 0.05 0.06 0.02 0.07 89.88 8 6134 pt5 2 Gunnar 74.27 3.20 4.97 0.22 0.08 0.04 0.02 0.04 0.11 0.23 0.02 0.01 0.10 0.02 0.05 0.04 83.27 3 6134 pt5 3 Gunnar 80.12 4.95 4.54 0.22 0.41 0.01 0.01 0.10 0.12 0.12 0.05 0.01 0.02 0.16 0.01 0.01 90.75 8 6134 pt6 1 Gunnar 81.12 3.04 5.23 0.01 0.01 0.04 0.01 0.03 0.00 0.04 0.02 0.01 0.01 0.01 0.02 0.01 89.49 2 6134 pt6 2 Gunnar 81.92 3.06 5.25 0.04 0.04 0.00 0.00 0.10 0.01 0.04 0.02 0.00 0.08 0.04 0.04 0.04 90.45 7 6134 pt6 3 Gunnar 80.49 3.09 5.36 0.02 0.02 0.01 0.09 0.08 0.04 0.06 0.01 0.01 0.01 0.04 0.09 0.01 89.37 6 6134 pt6 4 Gunnar 81.96 3.12 4.98 0.05 0.04 0.01 0.02 0.10 0.02 0.06 0.04 0.00 0.07 0.02 0.01 0.01 90.44 8 6134 pt8 1 Gunnar 79.17 2.87 4.43 0.01 0.02 0.01 0.57 1.40 0.09 0.07 0.02 0.10 0.03 0.16 0.07 0.01 88.96 110 6134 pt8 2 Gunnar 79.67 2.90 4.69 0.02 0.07 0.03 0.35 1.44 0.06 0.00 0.03 0.07 0.02 0.08 0.10 0.05 89.42 112 6134 pt8 3 Gunnar 80.29 3.14 3.87 0.03 0.78 0.01 0.05 0.11 0.08 0.03 0.04 0.00 0.04 0.12 0.00 0.00 88.53 9 6134 pt8 4 Gunnar 77.08 2.76 5.44 0.05 0.02 0.02 0.53 0.61 0.09 0.01 0.01 0.04 0.06 0.21 0.02 0.04 86.86 49 6134 pt8a 1 Gunnar 80.50 4.02 5.50 0.04 0.11 0.02 0.00 0.07 0.01 0.12 0.06 0.02 0.07 0.05 0.03 0.00 90.45 5 6134 pt8a 2 Gunnar 82.92 2.92 5.30 0.07 0.04 0.02 0.09 0.11 0.01 0.07 0.01 0.04 0.10 0.01 0.07 0.02 91.62 8 6134 pt8a 3 Gunnar 77.51 1.83 5.81 0.17 0.02 0.02 0.05 0.16 0.11 0.15 0.00 0.03 0.12 0.01 0.06 0.07 85.99 13 6134 pt9 1 Gunnar 63.41 3.15 4.32 0.08 0.04 0.03 0.24 1.46 0.18 0.19 0.03 0.05 0.08 0.12 0.05 0.02 73.42 143 6134 pt9 2 Gunnar 75.28 3.78 5.33 0.02 0.07 0.01 0.29 1.41 0.22 0.08 0.00 0.03 0.01 0.20 0.02 0.07 86.69 117 6134 pt9 3 Gunnar 73.41 2.98 5.19 0.09 0.09 0.05 0.31 1.60 0.28 0.29 0.03 0.02 0.07 0.19 0.06 0.03 84.62 135 6134 pt9a 1 Gunnar 81.55 3.36 4.26 0.18 0.69 0.00 0.08 0.08 0.15 0.10 0.01 0.01 0.06 0.07 0.02 0.00 90.57 6 6134 pt9a 2 Gunnar 80.44 2.93 4.23 0.04 0.47 0.06 0.14 0.21 0.15 0.07 0.01 0.01 0.05 0.13 0.02 0.04 88.96 16 6134 pt9a 3 Gunnar 78.82 3.02 4.69 0.03 0.60 0.03 0.15 0.05 0.14 0.05 0.01 0.00 0.03 0.15 0.04 0.05 87.79 4 6134 pt9a 4 Gunnar 77.24 5.45 4.77 0.44 0.46 0.04 0.00 0.12 0.19 0.16 0.00 0.01 0.09 0.16 0.05 0.03 89.07 10 6134 pt10 1 Gunnar 73.83 6.55 3.47 1.32 0.01 0.03 0.07 0.41 0.09 0.14 0.00 0.01 0.05 0.27 0.01 0.06 86.09 35 6134 pt10 2 Gunnar 64.50 9.49 2.43 9.15 0.06 0.01 0.12 0.65 0.12 0.28 0.06 0.03 0.05 0.32 0.26 0.05 87.17 63 6134 pt10 3 Gunnar 74.14 7.47 3.23 1.59 0.01 0.01 0.06 0.32 0.04 0.16 0.00 0.01 0.01 0.27 0.03 0.04 87.34 27 6134 pt10 4 Gunnar 74.03 5.88 2.71 1.97 0.08 0.01 0.18 1.96 0.14 0.13 0.03 0.01 0.01 0.41 0.03 0.07 87.58 164 262
Page 1 and 2:
FLUID EVOLUTION AND STRUCTURAL CONT
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Abstract Uranium deposits associate
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Co-Authorship This thesis and the m
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Sarah Rice and Jonathan Cloutier, a
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TABLE OF CONTENTS Abstract………
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2.5.2. Temporal relationships of fa
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4.5.3. Isotopic compositions of min
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List of Figures Figure 1.1. General
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Figure 4.16. Distribution of 207 Pb
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Table 4.4. Isotopic data of the U-P
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processes by which these deposits f
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Figure 1.1. Generalized geological
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which is the equivalent of the Mill
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dolostone and carbonaceous shale (L
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Mineral Field (Figure 1.2). Many de
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2005). U mineralization is controll
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Figure 1.4. Schematic representatio
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In particular, the key issues to be
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genetic model for the U mineralizat
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fourth and most significant uranium
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The Beaverlodge area is part of the
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1998; Hartlaub and Ashton, 1998). R
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(D 1 ) produced a regional migmatit
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These previous age models do not ta
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the age when the concentrations of
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Figure 2.3. A: Detailed geologic ma
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hornblende-feldspar gneiss showing
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east-west striking en-échelon quar
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and broken Kfs 1 and Qtz 1 embedded
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A Meters LEGEND B Figure 2.6. A: De
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Figure 2.7. Microphotograph of vari
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eplaces Kfs 1 feldspars (Fig. 2.7A)
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the Qtz 1 quartz dissolution result
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Figure 2.9. Microphotograph of typi
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uraninite (Fig. 2.10). The errors o
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Figure 2.10. Backscattered Electron
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post-mineralization alteration duri
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Post-mineralization alteration even
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Volcanic-type ±U 5 (Sample 6139, G
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6134 pt8a 2 Gunnar 82.92 2.92 5.30
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Regression to zero content of the s
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faults (Fig. 2.13C). The breccias w
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Figure 2.13. Schematic cross-sectio
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Mylonites were then reactivated at
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and thrusting during the 1.94-1.92
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Beaverlodge area (Morelli et al., 2
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dikes (Ernst and Buchan, 2001b) and
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Figure 2.15: Distribution of 207 Pb
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CHAPTER 3 GENESIS OF MULTIFARIOUS U
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eccia-type. The other styles of min
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The basement consist of Neoarchean
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of essentially unmetamorphosed arko
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WDX X-ray spectrometers at Carleton
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3.4. Results 3.4.1. Paragenesis of
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are derived from their chlorite cry
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Figure 3.4. Photomicrographs of typ
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3.4J). Py 6 Pyrite and Cpy 5 chalco
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mineralization varies from 25.70 to
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6137APt71 60.67 13.73 4.59 6.48 0.0
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Fig. 3.6A). The Ca may result from
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Sample ID 1 ± 2 ± 3.a ± 4 ± 5.a
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Stable isotopic O and C composition
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Sample ID Deposit Mineral Mineral v
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equilibrium with a fluid having δ
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Syn-ore Chl 8 chlorite sampled from
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Figure 3.9. Binary diagrams showing
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Figure 3.10. Chondrite-normalized R
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Retrograde metamorphism Early vein
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contents in syn-ore Chl 4 chlorite
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decompression and hydration reactio
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mineralizations, which upgraded the
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metamorphic origin of the main U 4
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y the abundance of Ap 1 apatite and
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of late fluid events that have affe
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CHAPTER 4 FLUID EVOLUTION AND GENES
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1990, 1991; Wyborn et al., 1990). H
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stable isotope geochemistry, U-Pb g
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coincident with the initiation of s
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plasma mass spectrometry (LA-HR-ICP
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The Coronation Hill deposit occupie
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arsenides, nickel selenide and copp
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No corrections were made to the 238
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which was interpreted as being asso
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porphyry and coated by Chl 1 formin
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Mineralized breccias showing quartz
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SOUTH ALLIGATOR RIVER GROUP EL SHER
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A Carbonaceous Shale B Src 1 Qtz 1
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A Granite Qtz 0 fragments Qtz 0 B M
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chemical composition as a result of
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Sample I.D SiO 2 CaO FeO ThO 2 MnO
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site occupancy (Cathelineau, 1988).
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Mineral values Temperature Fluid va
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Corrected ratios Apparent ages ( ±
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G H Figure 4.12. U-Pb concordia dia
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Figure 4.13. Pb-Pb isochron diagram
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and 4.12B), and to 207 Pb/ 206 Pb a
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160 o C at Coronation Hill. The tem
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Figure 4.15. Conceptual genetic mod
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of the Koolpin Formation, while dep
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at ca. 1820 Ma, approximately 40 My
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culminating with the formation of R
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deposits is related to fluids deriv
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CHAPTER 5 GENERAL DISCUSSION 5.1. I
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ed-bed strata and associated volcan
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character of the fluid that formed
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5.2.1.2. Metamorphic-related uraniu
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during brecciation or reduction as
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ca. 1820 Ma that triggered reactiva
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Plutons Event at 1.4 Ga (Barinek et
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Kolari-Kittila Province Kuusamo Pro
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The uranium deposits in various pro
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Fig. 5.6. Distribution of the Rorai
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Roraima Basin, similar to what is o
Page 229 and 230: etween ca. 2.3 Ga and 1.9 Ga. Later
Page 231 and 232: REFERENCES Adams, J., 1989. Postgla
Page 233 and 234: Ashton, K.E., 2010. The Gunnar Mine
Page 235 and 236: Bowles, J.F.W., 1990. Age dating of
Page 237 and 238: Cuney, M.L., 2005. World-class unco
Page 239 and 240: deposits in the Athabasca Basin, Sa
Page 241 and 242: Hartlaub, R.P., Heaman, L.M., Chack
Page 243 and 244: Saskatchewan Geological Survey, Sas
Page 245 and 246: Kyser, K., and Cuney, M., 2008. Geo
Page 247 and 248: two-sided oblique-slip collisional
Page 249 and 250: Creek Geosyncline: in ‘The minera
Page 251 and 252: Piper, J.D.A., 2004. Discussion on
Page 253 and 254: 99.Sheppard SMF and Gilg HA 1996. S
Page 255 and 256: Proceedings Darwin Conference 1984
Page 257 and 258: Wingate, M.T.D, Pisarevsky SA, Evan
Page 259 and 260: Sample Deposit 207 Pb/ 206 Pb ±2σ
Page 265 and 266: APPENDIX B REE contents of various
Page 267 and 268: Sample Y Zr Cs Ba Th La Ce Pr Nd Sm
Page 269 and 270: Sample ΣREE TLREE THREE LREE/HREE
Page 271 and 272: SAMPLE ID. SiO 2 TiO 2 AL 2O 3 CR 2
Page 273 and 274: SAMPLE ID. SiO 2 TiO 2 AL 2O 3 CR 2
Page 275 and 276: APPENDIX E Electron microprobe data
Page 277 and 278: SAMPLE Si 4+ AL 4+ Total AL 6+ Ti 4
Page 279: SAMPLE Si 4+ AL 4+ Total AL 6+ Ti 4
Page 283 and 284: Sample ID. Deposit UO 2 SiO 2 CaO F
Page 285 and 286: Corrected ratios Apparent ages ( ±
Page 287 and 288: Corrected ratios Apparent ages ( ±
Page 289 and 290: Sample ID. Al 2O 3 CaO FeO K2O MgO
Page 291 and 292: Sample ID. Al 2O 3 CaO FeO K2O MgO
Page 293 and 294: 250 85 330 40 145 70 25 65 30 30 27
Page 295 and 296: Mineralized veins Quartz veins 276
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