Proposed Title 1: - Queen's University
Proposed Title 1: - Queen's University Proposed Title 1: - Queen's University
cutting early Qtz 1 veins and the assemblage Src 1 -Chl 1 -dominated pre-ore alteration. (E) U 1 associated with Chl 2 , Cal 2 , and Hem 2 cutting the assemblage Src 1 -Chl 1 -dominated pre-ore alteration. (F) Post-ore Kln 1 alteration obliterating texture of the pre-ore and syn-ore mineral assemblage. Qtz 2 quartz has Hem 3 hematite inclusions (Fig. 4.9C) and displays irregular contours (Fig. 4.10C) that suggest partial dissolution during a late alteration event. Qtz 2 quartz displays similar morphology to those recognized in sandstone of the Athabasca and Kombolgie basins (Hiatt and Kyser. 2000; Polito et al., 2005; Hiatt et al., 2007). Pressure solution features such as grain-point contacts and sutured grain boundaries are well developed and locally forming stylolites. Kln 1 kaolinite alteration is pervasive and fills well-developed secondary porosity (Fig. 4.10E) where it partially replaces detrital Ms 0 muscovite (Fig. 4.10D). The morphology of the Kln 1 kaolinite varies from coarse-grained vermiform to very fine-grained (Fig. 4.10E). Aggregates of Ttn 1 titanite are disseminated and generally associated with altered Mzn 0 monazite (Fig. 4.10B). 4.5.1.2.3. Uranium mineralization The ore alteration stage in the basement overprints the pre-ore alteration assemblage. Crosscutting relationships indicate that the syn-ore assemblage cross cuts Qtz 1 quartz veins and the pre-ore alteration assemblage Src 1 sericite and Chl 1 chlorite (Fig. 4.9D). U 1 Uraninite is spatially associated with, or rimmed by Chl 2 chlorite, Cal 2 calcite, and Hem 3 hematite (Fig. 4.9E). Cpy 2 chalcopyrite and minor Gn 1 galena are associated with the U 1 uranium mineralization. 157
A Granite Qtz 0 fragments Qtz 0 B Mzn 1 Ttn 1 Qtz 0 Qtz 0 Kln 1 500μm 150μm C D E Kln 1 Kln 1 Qtz 0 Qtz 0 150μm Kln 1 F Qtz 0 Kln 1 Qtz 0 Src 2 Qtz 0 Kln 1 Qtz 0 250μm Qtz 0 Hem 2 Qtz 0 Qtz 2 Tur 1 150μm 150μm Figure 4.10. Photomicrographs of typical mineral assemblages of the Coronation sandstones. (A) Well-sorted, quartz-dominated sandstones of the Coronation sandstone including rounded Qtz 0 grains and granite fragments. (B) Altered Mzn 0 in sandstone. (C) Fragmented Tur 1 in sandstone. Well-developed Qtz 2 overgrowths outlining detrital Qtz 0 grains in sandstone. Qtz 2 overgrowths have very fine Hem 2 grains inclusions and display irregular contours that suggest partial dissolution during late alteration event. (D) Altered Ms 0 laths in the altered 158
- Page 125 and 126: Stable isotopic O and C composition
- Page 127 and 128: Sample ID Deposit Mineral Mineral v
- Page 129 and 130: equilibrium with a fluid having δ
- Page 131 and 132: Syn-ore Chl 8 chlorite sampled from
- Page 133 and 134: Figure 3.9. Binary diagrams showing
- Page 135 and 136: Figure 3.10. Chondrite-normalized R
- Page 137 and 138: Retrograde metamorphism Early vein
- Page 139 and 140: contents in syn-ore Chl 4 chlorite
- Page 141 and 142: decompression and hydration reactio
- Page 143 and 144: mineralizations, which upgraded the
- Page 145 and 146: metamorphic origin of the main U 4
- Page 147 and 148: y the abundance of Ap 1 apatite and
- Page 149 and 150: of late fluid events that have affe
- Page 151 and 152: CHAPTER 4 FLUID EVOLUTION AND GENES
- Page 153 and 154: 1990, 1991; Wyborn et al., 1990). H
- Page 155 and 156: stable isotope geochemistry, U-Pb g
- Page 157 and 158: coincident with the initiation of s
- Page 159 and 160: plasma mass spectrometry (LA-HR-ICP
- Page 161 and 162: The Coronation Hill deposit occupie
- Page 163 and 164: arsenides, nickel selenide and copp
- Page 165 and 166: No corrections were made to the 238
- Page 167 and 168: which was interpreted as being asso
- Page 169 and 170: porphyry and coated by Chl 1 formin
- Page 171 and 172: Mineralized breccias showing quartz
- Page 173 and 174: SOUTH ALLIGATOR RIVER GROUP EL SHER
- Page 175: A Carbonaceous Shale B Src 1 Qtz 1
- Page 179 and 180: chemical composition as a result of
- Page 181 and 182: Sample I.D SiO 2 CaO FeO ThO 2 MnO
- Page 183 and 184: site occupancy (Cathelineau, 1988).
- Page 185 and 186: Mineral values Temperature Fluid va
- Page 187 and 188: Corrected ratios Apparent ages ( ±
- Page 189 and 190: G H Figure 4.12. U-Pb concordia dia
- Page 191 and 192: Figure 4.13. Pb-Pb isochron diagram
- Page 193 and 194: and 4.12B), and to 207 Pb/ 206 Pb a
- Page 195 and 196: 160 o C at Coronation Hill. The tem
- Page 197 and 198: 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
A<br />
Granite<br />
Qtz 0<br />
fragments<br />
Qtz 0<br />
B<br />
Mzn 1 Ttn 1 Qtz 0<br />
Qtz 0 Kln 1<br />
500μm<br />
150μm<br />
C<br />
D<br />
E<br />
Kln 1 Kln 1<br />
Qtz 0 Qtz 0<br />
150μm<br />
Kln 1<br />
F<br />
Qtz 0<br />
Kln 1<br />
Qtz 0 Src 2<br />
Qtz 0 Kln 1 Qtz 0<br />
250μm<br />
Qtz 0 Hem 2 Qtz 0<br />
Qtz 2 Tur 1<br />
150μm<br />
150μm<br />
Figure 4.10. Photomicrographs of typical mineral assemblages of the Coronation sandstones.<br />
(A) Well-sorted, quartz-dominated sandstones of the Coronation sandstone including rounded<br />
Qtz 0 grains and granite fragments. (B) Altered Mzn 0 in sandstone. (C) Fragmented Tur 1 in<br />
sandstone. Well-developed Qtz 2 overgrowths outlining detrital Qtz 0 grains in sandstone. Qtz 2<br />
overgrowths have very fine Hem 2 grains inclusions and display irregular contours that<br />
suggest partial dissolution during late alteration event. (D) Altered Ms 0 laths in the altered<br />
158
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