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

Sample I.D Mineralization-type Deposit n 207 Pb/ 206 Pb ±2σ 207 Pb/ 235 U ±2σ 206 Pb/ 238 U ±2σ R‡ 207 Pb/ 206 Pb ± Oldest 207 Pb/ 206 Pb ± 206 Pb/ 238 U ± 207 Pb/ 235 U ± Disc‡ a. Primary uranium mineralization Cat Cataclasite-type U 1 Ace Fay 15 0.1170 0.0024 3.7511 0.6756 0.2442 0.0655 0.54 1896 37 2272 27 1403 340 1572 147 25 6122a Cataclasite-type U 1 Ace Fay 11 0.1241 0.0018 3.9547 0.3658 0.2477 0.0273 0.56 2002 26 2293 17 1425 373 1615 111 28 6122b Early vein-type U 2 Ace Fay 16 0.1041 0.0020 3.3142 0.4428 0.2452 0.0529 0.50 1674 36 2289 20 1409 272 1470 103 14 V-Cat Early vein-type U 2 Ace Fay 11 0.1189 0.0021 3.6762 0.5656 0.2563 0.0629 0.52 1915 34 2276 29 1469 323 1562 123 21 B5812a Breccia-type U 4 Ace Fay 8 0.1098 0.0026 2.7659 0.1271 0.1710 0.0133 0.44 1796 43 1848 5 1016 74 1339 31 43 6120 Volcanic-type U 5 Ace Fay 12 0.1076 0.0005 3.4210 0.1909 0.2314 0.0136 0.95 1760 9 1800 37 1340 71 1505 44 24 6139 Volcanic-type U 5 Gunnar 22 0.1096 0.0003 4.1894 0.307 0.2795 0.0207 1.00 1793 4 1812 15 1587 104 1669 61 11 2202 Athabasca-type U 6 Martin Lake 37 0.0897 0.0004 2.1196 0.138 0.1717 0.0111 1.00 1418 9 1620 4 1020 61 1147 44 28 3705 Athabasca-type U 6 Ace Fay 22 0.0914 0.0090 2.2412 0.391 0.1924 0.0412 0.63 1453 188 1616 174 1125 220 1158 123 24 b. Post-mineralization alteration events recorded in the U/Pb system VRC Breccia-type U 4 Gunnar 14 0.0857 0.0004 1.6237 0.0676 0.1374 0.0057 0.99 1331 10 1380 34 828 32 973 26 38 6134 Metasomatic-type U 3 Gunnar 7 0.0832 0.0019 0.2582 0.0268 0.0224 0.0024 0.74 1268 48 1372 4 142 15 227 20 89 GN-42 Metasomatic-type U 3 Gunnar 11 0.0806 0.0011 0.3779 0.0275 0.0340 0.0025 0.98 1210 26 1284 22 215 15 325 20 82 C23-116 Breccia-type U 4 Cinch Lake 29 0.0705 0.0014 0.4164 0.0526 0.0427 0.0055 0.96 930 41 1164 24 268 34 340 38 69 VR69190 Metasomatic-type U 3 Gunnar 10 0.0653 0.0006 0.6351 0.0451 0.0705 0.0050 0.99 786 19 796 15 439 30 499 28 44 6037b Metasomatic-type U 3 Gunnar 10 0.0536 0.0014 0.2358 0.0473 0.0318 0.0059 0.977 352 61 497 26 201 36 213 37 43 EA3010A Athabasca-type U 6 Eagle-Ace 10 0.0534 0.0003 0.2626 0.0198 0.0356 0.0027 1.00 347 14 396 13 225 17 237 16 35 EA3011 Volcanic-type U 5 Eagle-Ace 15 0.0529 0.0006 0.2389 0.0170 0.0327 0.0023 0.98 325 28 419 21 207 14 217 14 36 Table 2.1. Analytical data from the U/Pb LA-HR-ICP-MS analysis of various uraninite occurrences in the Beaverlodge area. The paragenesis of each type of uraninite analyzed is shown in Figures 2.8 and 2.9 and described in Section 4.3., R: error correlation coefficient, Disc‡: percentage discordance. n: number of grains. 206 Pb/ 238 U, 207 Pb/ 235 U, and 207 Pb/ 206 Pb ages are calculated using equations reported by Ludwig (2000) and expressed in Ma. 53
Figure 2.10. Backscattered Electron Microscope (BSEM) of U-rich minerals. A: Mottled and speckled U 1 grain disseminated in cataclasite rock (Sample 6122, Ace). B: Speckled and pitted U 2 grain in early tensional vein showing ablation pits created by LA-HR-ICPMS (Sample 6122, Ace). C: Fractured and altered U 3 (Sample 6134, Gunnar). D: Recrystallized U 3 coating vugs in altered metasomatic granite (Sample 6134, Gunnar). E: Speckled and pitted U 4 54
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
Page 21 and 22: processes by which these deposits f
Page 23 and 24: Figure 1.1. Generalized geological
Page 25 and 26: which is the equivalent of the Mill
Page 27 and 28: dolostone and carbonaceous shale (L
Page 29 and 30: Mineral Field (Figure 1.2). Many de
Page 31 and 32: 2005). U mineralization is controll
Page 33 and 34: Figure 1.4. Schematic representatio
Page 35 and 36: In particular, the key issues to be
Page 37 and 38: genetic model for the U mineralizat
Page 39 and 40: fourth and most significant uranium
Page 41 and 42: The Beaverlodge area is part of the
Page 43 and 44: 1998; Hartlaub and Ashton, 1998). R
Page 45 and 46: (D 1 ) produced a regional migmatit
Page 47 and 48: These previous age models do not ta
Page 49 and 50: the age when the concentrations of
Page 51 and 52: Figure 2.3. A: Detailed geologic ma
Page 53 and 54: hornblende-feldspar gneiss showing
Page 55 and 56: east-west striking en-échelon quar
Page 57 and 58: and broken Kfs 1 and Qtz 1 embedded
Page 59 and 60: A Meters LEGEND B Figure 2.6. A: De
Page 62 and 63: Figure 2.7. Microphotograph of vari
Page 64: eplaces Kfs 1 feldspars (Fig. 2.7A)
Page 67 and 68: the Qtz 1 quartz dissolution result
Page 69 and 70: Figure 2.9. Microphotograph of typi
Page 71: uraninite (Fig. 2.10). The errors o
Page 75 and 76: post-mineralization alteration duri
Page 77 and 78: Post-mineralization alteration even
Page 79 and 80: Volcanic-type ±U 5 (Sample 6139, G
Page 81 and 82: 6134 pt8a 2 Gunnar 82.92 2.92 5.30
Page 83 and 84: Regression to zero content of the s
Page 85 and 86: faults (Fig. 2.13C). The breccias w
Page 87 and 88: Figure 2.13. Schematic cross-sectio
Page 89 and 90: Mylonites were then reactivated at
Page 91 and 92: and thrusting during the 1.94-1.92
Page 93 and 94: Beaverlodge area (Morelli et al., 2
Page 95 and 96: dikes (Ernst and Buchan, 2001b) and
Page 97 and 98: Figure 2.15: Distribution of 207 Pb
Page 99 and 100: CHAPTER 3 GENESIS OF MULTIFARIOUS U
Page 101 and 102: eccia-type. The other styles of min
Page 103 and 104: The basement consist of Neoarchean
Page 105 and 106: of essentially unmetamorphosed arko
Page 107 and 108: WDX X-ray spectrometers at Carleton
Page 109 and 110: 3.4. Results 3.4.1. Paragenesis of
Page 111 and 112: are derived from their chlorite cry
Page 113 and 114: Figure 3.4. Photomicrographs of typ
Page 115 and 116: 3.4J). Py 6 Pyrite and Cpy 5 chalco
Page 117 and 118: mineralization varies from 25.70 to
Page 119 and 120: 6137APt71 60.67 13.73 4.59 6.48 0.0
Page 121 and 122: 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
Page 179 and 180:
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 ( ±
Page 189 and 190:
G H Figure 4.12. U-Pb concordia dia
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Figure 4.13. Pb-Pb isochron diagram
Page 193 and 194:
and 4.12B), and to 207 Pb/ 206 Pb a
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160 o C at Coronation Hill. The tem
Page 197 and 198:
Figure 4.15. Conceptual genetic mod
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of the Koolpin Formation, while dep
Page 201 and 202:
at ca. 1820 Ma, approximately 40 My
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culminating with the formation of R
Page 205 and 206:
deposits is related to fluids deriv
Page 207 and 208:
CHAPTER 5 GENERAL DISCUSSION 5.1. I
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ed-bed strata and associated volcan
Page 211 and 212:
character of the fluid that formed
Page 213 and 214:
5.2.1.2. Metamorphic-related uraniu
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during brecciation or reduction as
Page 217 and 218:
ca. 1820 Ma that triggered reactiva
Page 219 and 220:
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
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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
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Sample Deposit 207 Pb/ 206 Pb ±2σ
Page 261 and 262:
Page 263 and 264:
Page 265 and 266:
APPENDIX B REE contents of various
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Sample Y Zr Cs Ba Th La Ce Pr Nd Sm
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Sample ΣREE TLREE THREE LREE/HREE
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SAMPLE ID. SiO 2 TiO 2 AL 2O 3 CR 2
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SAMPLE ID. SiO 2 TiO 2 AL 2O 3 CR 2
Page 275 and 276:
APPENDIX E Electron microprobe data
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SAMPLE Si 4+ AL 4+ Total AL 6+ Ti 4
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SAMPLE Si 4+ AL 4+ Total AL 6+ Ti 4
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Sample ID. Deposit UO 2 SiO 2 CaO F
Page 283 and 284:
Sample ID. Deposit UO 2 SiO 2 CaO F
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Page 287 and 288:
Page 289 and 290:
Sample ID. Al 2O 3 CaO FeO K2O MgO
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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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