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

the genesis of the underlying Alligator Rivers Unconformity- type uranium deposits US Dept of Energy, GJBX- 173 79., 38 O’Neil,, J..R. and Taylor H.P. Jr., 1969. Oxygen isotope equilibrium between muscovite and water: Journal of Geophysical Research, 74, 6012–6022 Page, R.W, Compston W, Needham R.S., 1980. Geochronology and evolution of the late Achaean basement and Proterozoic rocks in the Alligator River Uranium Field, Northern Territory, Australia: in Ferguson J and Goleby AB editors. Uranium in the Pine Creek Geosyncline International Atomic Energy Agency, Vienna, 39–68 Page, R.W. and Williams I.S., 1988. Age of the Barramundi Orogeny in northern Australia by means of ion microprobe and conventional U-Pb zircon studies Precambrian Research 40/41, 21–36 Page, R.W. and Bell T.H., 1986. Isotopic and structural responses of granite to successive deformation and metamorphism J Geol 94:365–379 Persons, S.S., 1983. U–Pb geochronology of Precambrian rocks in the Beaverlodge area, northwestern Saskatchewan: Unpublished M.Sc. Thesis, <strong>University</strong> of Kansas, 68 p. Peiris, E. and Parslow, G., 1988. Geology and geochemistry of the uranium-gold mineralization in the Nicholson Bay-Fish Hook Bay Area: In Summary of Investigations, Saskatchewan Geological Survey Miscellaneous Report 88-4, p. 70-77 Pharaoh, T. C. and Brewer, T. S., 1990. Spatial and temporal diversity of Early Proterozoic volcanic sequences. Comparisons between the Baltic and Laurentian Shields: Precambrian Research, v. 47, p. 169-189. Pietsch, B.A. and Stuart-Smith P.G., 1987. Darwin SD52-4 1:250 Geological Map Series, Northern Territory Geological Survey, Department of Mines and Energy Comparisons between the Baltic and Laurentian Shields: Precambrian Research, v. 47, p. 169-189. Pinheiro, S.S., Fernandes, P.E.C.A., Pereira, E.R., Vasconcelos, E.G., Pinto, A.C., Montalvaõ, R.M.G., Issler, R.S., Dall’Agnoll, R., Teixeira, W., and Fernandes, C.A.C., 1976, Geologia, in Levantamento de Recursos Naturais, Projeto Radar na Amazoˆnia: Rio de Janeiro, Brazil, Departamento Nacional da Produçaõ Mineral, sheet NA.19—Pico da Neblina, v. 11, p. 19–137. Piper, J.D.A., 2000. The Neoproterozoic Supercontinent: Rodinia or Palaeopangaea: Earth and Planetary Science Letters 176, 131-146. 231
Piper, J.D.A., 2004. Discussion on “The making and unmaking of a supercontinent: Rodinia revisited” Tectonophysics, 375, 261–288. Pisarevsky, S.A., Natapov, L.M., Donskaya, T.V., Gladkochub, D.P., Vernikovsky, V.A., 2008. Proterozoic Siberia: a promontory of Rodinia. Precambrian Research 160, 66-76. Plant, J.A., Simpson, P.R., Smith, B., Windley, B.F., 1999. U ore deposits: products of the radioactive earth: Reviews in Mineralogy and Geochemistry, v. 38, p. 255-319. Polito, P.A, Kyser T.K, Marlatt J, Alexandre P, Bajwah Z.U, Drever, D., 2004. Significance of alteration assemblages for the origin and evolution of the Proterozoic Nabarlek unconformity-related uranium deposit, Northern Territory, Australia Economic Geology 99, 113–139 Polito, P.A, Kyser T.K, Thomas D, Marlatt J, Drever G., 2005. Re-evaluation of the petrogenesis of the Proterozoic Jabiluka unconformity-related U deposit, Northern Territory, Australia Miner Depos 40:257–288 Polito, P.A, Kyser T.K, Southgate P.N, Jackson M.J., 2006. Sandstone Diagenesis in the Mount Isa Basin: An isotopic and fluid inclusion perspective in relation to district-wide Zn, Pb, and Cu mineralization Econ Geol 101:1159–1188 Polito, P.A, Kyser K.T, Stanley C., 2007. The Proterozoic, albitite hosted, Valhalla U deposit, Queensland, Australia: A description of the alteration assemblage associated with U mineralization in diamond drill hole: Mineralium Deposita, 44, p11–40 Porto da Silveira, C,L., Schorscher H,D., Miekeley N., 1991, The geochemistry of albitization and related U mineralization, Espinharas, Paraiba (PB), Brazil. Journal of Geochemical Exploration, v. 40, p. 329–347. Quirt, D.H., 2003. Athabasca unconformity-type uranium deposits: one deposit type with many variations, in Cuney, M., ed., Uranium Geochemistry 2003, International Conference, April 13-162003, Proceedings: Unité Mixte de Recherche CNRS 7566 G2R, Université Henri Poincaré, Nancy, France, p. 309-312. Rainbird, R.H., Stern, R.A., Rayner, N., Jefferson, C.W., 2007. Age, provenance and regional correlation of the Athabasca Group, Saskatchewan and Alberta constrained by igneous and detrital zircon geochronology, in: Jefferson, C.W., Delaney, G. (Eds.), Extech IV: Geology and Uranium Exploration Technology of the Proterozoic Athabasca Basin Saskatchewan and Alberta. Geological Survey of Canada, Bulletin 588, pp. 193-209. 232
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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
Page 199 and 200: of the Koolpin Formation, while dep
Page 201 and 202: at ca. 1820 Ma, approximately 40 My
Page 203 and 204: 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
Page 209 and 210: 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
Page 215 and 216: 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
Page 221 and 222: Kolari-Kittila Province Kuusamo Pro
Page 223 and 224: The uranium deposits in various pro
Page 225 and 226: Fig. 5.6. Distribution of the Rorai
Page 227 and 228: 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: Creek Geosyncline: in ‘The minera
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 and 280: SAMPLE Si 4+ AL 4+ Total AL 6+ Ti 4
Page 281 and 282: Sample ID. Deposit UO 2 SiO 2 CaO F
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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