 | Bankole, Olabode M., El Albani, Abderrazak, Meunier, Alain, Gauthier-Lafaye, François (2015) Textural and paleo-fluid flow control on diagenesis in the Paleoproterozoic Franceville Basin, South Eastern, Gabon. Precambrian Research, 268. 115-134 doi:10.1016/j.precamres.2015.07.008 | Journal (article/letter/editorial) | | Paleoproterozoic Franceville Basin, South Eastern, Gabon Olabode M. Bankole a,∗ , Abderrazak El Albani a...Basin Gabon a b s t r a c t The Paleoproterozoic (∼2.15 Ga) Franceville Basin, South Eastern Gabon, is...Franceville Basin (Fig. 1), located in south-eastern Gabon, represents one of the world oldest petroleum systems...2010, 2014) and natural nuclear fission reactors at Oklo, and widely explored for uranium and manganese ore...Regional geological map of Franceville Basin in Gabon (Ossa et al., 2013) that shows location of the study |  | | Journal (article/letter/editorial) | | recrystallization and Pb loss in the Oklo and Bangombé natural fission reactors, Gabon LENA Z. EVINS,1,* KELD A....Museum of Natural History, Stockholm, Sweden Department of Geological Sciences, University of Michigan...accepted in revised form July 19, 2004) Abstract—The Oklo and Bangombé natural fossil fission reactors formed...formed ca. 2 Ga ago in the Franceville basin, Gabon. The response of uraninite in the natural reactors...Uraninite and galena from two reactor zones, RZ16 at Oklo and RZB at Bangombé, were studied to clarify the |  | | Journal (article/letter/editorial) | | reactors in Oklo were operating (Adam, 2007; Fig. 3). 3.2. Proterozoic natural nuclear reactor in Oklo, Gabon...uranium deposits of the Francevillian series in Gabon (Bodu et al., 1972; Neuilly et al., 1972). Since...reactor zones (RZs) have been found in the Oklo in Gabon, several of which are characterized in Table...within Okelobondo and Bangombe deposits close to Oklo (Hidaka and Kikuchi, 2010). The RZs consist of high-grade...2016). Summarizing the formation history of the Oklo natural reactors, detrital U-bearing minerals were |  | | Journal (article/letter/editorial) | | italics; book reviews are placed at the end. Acid-mine drainage (AMD), relationships of soluble, suspended...assemblage from the Tertiary Barrington volcanic province, New South Wales, 623; no61bensonite a new BaMn...silicate of the lawsonite structure type, from Woods mine, New South Wales, 369; solid solution and composi-...mineral of the lawsonite structure type, from Woods mine, New South Wales, Australia, 369 BARKOV.A., 973...973 BARRETT,J., 821 Barrington volcanic province, an unusual rubysapphire-sapphirine-spinel assemblage from |  | | Journal (article/letter/editorial) | | in granites K. C. JACKSON2 Department of Chemistry', and Department of Geology', University of Arkansas...apparent following the re cent discovery of the Oklo phenomenon (NEUILLYet al., 1972; see also KURODA...feldspar and quartz, white lenses dominat ed by plagioclase and quartz, and dark lenses containing abundant...Onaping and the other branch goes northeast to Levack Mine. The specimen consists predominantly of a red grano...when the natural reactors were in operation at Oklo, Gabon, Africa. According to BODU et al. (1972), absolute |  | Mouélé, Idalina Moubiya, Dudoignon, Patrick, Albani, Abderrazak El, Martin, Hervé, Paquette, Jean-Louis, Cuney, Michel, Gauthier-Lafaye, François (2013) The Archean Granitoid-Paleoproterozoic Unconformity: Superimposition of Alteration Events in Archean Granitoids, Gabon. Procedia Earth and Planetary Science, 7. 598-601 doi:10.1016/j.proeps.2013.03.175 | Journal (article/letter/editorial) | | superimposition of alteration events in Archean granitoids, Gabon Idalina Moubiya Mouéléa*, Patrick Dudoignona, Abderrazak...France Abstract The Archean granitoids of the South Gabon, dated from 3.0-to-2.5 Ga, were examined along the...that was drill cored in the Franceville basin (Gabon). The previous studies performed in the Francevillian...the Northeast part of the Congo craton, and South Gabon. This massif is composed of heterogeneous granitoids...and locally late crystallization of calcite in plagioclase replacement and in fissure infilling. Locally |  | | Report (issue) | | deposits of Mas Laveyre (France) and Mikouloungou (Gabon). 5 3. Hematite breccia complex deposits: Deposits...activities include drilling and coring to complete final mine plans and establish final processing flowsheets...case of an underground mine or overburden stripping in the case of an open pit mine, mill construction,...direction and dips south at 15–30º. In the Main Mine Series the ore zone is up to 35m thick. Jabiluka...open to the south and east at depth. In the Main Mine Series the ore zones are up to 135m thick. The metasedimentary |  | | Report (volume) | | Editors: Peter C. Burns' & Robert Finch 2 1 Department of Civil Engineering and Geological Sciences...Environmental issues such as coping with uranium mine and mill tailings and other uranium-contaminated...and Geochemistry of Natural Fission Reactors in Gabon Janusz Janeczek 8 393 Geomicrobiology of Uranium...and Geochemistry of Natural Fission Reactors in Gabon Janusz Janeczek INTRODUCTION: NATURAL FISSION REACTORS...largest construction projects in the history of the Department of Energy. Approximately three billion dollars |  | | Journal (article/letter/editorial) | | PRIMARY URANINITE Ryan SHARPE§ and Mostafa FAYEK Department of Geological Sciences, 240 Wallace Building...site of the first discovery of the mineral in the province (Paul 1984). The pegmatite was characterized by...and Canada) and the natural nuclear reactors in Gabon. The final phase was made possible by the rise of...2009, 2010, Cuney & Kyser 2009). The Superior Province of the Canadian Shield is one of the oldest cratons...Archean craton on Earth. The western Superior Province is divided into a series of east–west-trending |  | | Book | | Kong Barcelona Budapest Dr. JOHN PARNELL Department of Geology, The Queen's University of Belfast...Francevillian Uranium Ore Deposits, Lower Proterozoic of Gabon F. Gauthier-Lafaye and F. Weber. . . . . . . . ...Lake, Canada, and the Natural Fission Reactors, Oklo, Gabon B. Nagy .......................................netic Relationships of Vein Pyrobitumen in the Panel Mine, Elliot Lake Uranium District, Ontario, Canada J...limited distance from many dykes and sills. 1 Department of Geology, The Queen's University of Belfast |  | | Journal (article/letter/editorial) | | hydrothermal biotite and hornblende at the Scotia gold mine, Western Australia: Evidence for argon loss associated...water radiolysis on local redox conditions in the Oklo Gabon, natural fission reactors 10 and 16 S. HUANGand...earth element partitioning between pyroxene and plagioclase in cumulate eucrites: An ion microprobe investigation |  | | Journal (article/letter/editorial) | | formational redox boundary at about 2.0 Ga in the Oklo area of Gabon. All known economically significant uranium...Central Asia province including Kazakhstan and Uzbekistan, the second largest uranium province of the world...0361-0128/98/000/000-00 $6.00 orogen: Rössing and the Shaba province. However these types of deposits are not specific... Kola Metamorphism 1.5 Unconformity related Oklo Paleoproterozoic passive margins sediments lism...Uranium district of Australia, in the Superior province of Canada, the Amazon craton of Brazil, the Dharwar |  | | Journal (article/letter/editorial) | | Franceviltian Basin, FB Formation, 50 km southeast of Oklo in Gabon. 2 samples, surface. (Weber, 1968: Gauthier-Lafaye...o f the grain is a crystal o f c a l c i u m plagioclase (light) w i t h a p p r o x i m a t e l y parallel...parallel streaks o f s o d i u m plagioclase ( g r a y ) . T h e b l a c k areas are holes. A bright c...FB Formation, 50 km from Oklo, Gabon. (25) Seed crystal of catcium plagioclase in middle ofglauconite grain...Francevitlian Series, FB Formation, 50 km from Oklo, Gabon. MICROTEXTURESIN MUDROCKSASREVEALEDBYBACK |  | Read, David, Andreoli, Marco A.G., Knoper, Mike, Williams, C. Terry, Jarvis, Neil (2002) The degradation of monazite: Implications for the mobility of rare-earth and actinide elements during low-temperature alteration. European Journal of Mineralogy, 14 (3) 487-498 doi:10.1127/0935-1221/2002/0014-0487 | Journal (article/letter/editorial) | | study was undertaken at the Steenkampskraal monazite mine, South Africa. Steenkampskraal is among the richest...common with other mineral deposits in the region. The mine was first in operation from 1952 to 1963 when it...contamination, are likely to be processed should the mine be re-opened at some time in the future This paper...General geology of the Steenkampskraal monazite mine, South Africa (modified after Andreoli et al., 1994...Location of study area (NMC – Namaqualand Metamorphic Province). 1980; Maruéjol et al., 1990) have tended to |  | Škácha, P., Goliáš, V., Sejkora, J., Plášil, J., Strnad, L., Škoda, R., Ježek, J. (2009) Hydrothermal uranium-base metal mineralization of the Jánská vein, Březové Hory, Příbram, Czech Republic: lead isotopes and chemical dating of uraninite. Journal of GEOsciences, 54 (1) 1-13 | Journal (article/letter/editorial) | | 43 Prague 2, Czech Republic; skachap@volny.cz Department of Mineralogy and Petrology, National Museum...report by Author Collective (1949) described plagioclase pinitization, epidotization and sericitization...uranium mineralization at the 2nd level of the Prokop mine. Calcite is a common mineral in the museum specimens...galena, Vojtěch mine, vein Protiklonná, 5th level (PR) No 495 J_4 galena, Vojtěch mine, main Vojtěch...th galena 0.8610 fine-grained galena, Štěpán mine, vein Klement, 2nd level (PR) No 1247 J_2 galena |  | Ngombi-Pemba, Lauriss, Albani, Abderrazak El, Meunier, Alain, Grauby, Olivier, Gauthier-Lafaye, François (2014) From detrital heritage to diagenetic transformations, the message of clay minerals contained within shales of the Palaeoproterozoic Francevillian basin (Gabon) Precambrian Research, 255. 63-76 doi:10.1016/j.precamres.2014.09.016 | Journal (article/letter/editorial) | | shales of the Palaeoproterozoic Francevillian basin (Gabon) Lauriss Ngombi-Pemba a,∗ , Abderrazak El Albani...Diagenesis Inheritance Depositional conditions Gabon a b s t r a c t Unmetamorphosed and undeformed...the FB, FC and FD of the Francevillian series (Gabon) were deposited in an epicontinental basin. Clay...from black shale of the Francevillian basin in Gabon. Ossa Ossa et al. (2013) attributed the survival...setting and outcrop in the southeastern Republic of Gabon. It consists of 64 L. Ngombi-Pemba et al. / Precambrian |  | | Journal (article/letter/editorial) | | uranium deposits in the Bohemian Massif. The total mine eschweizerbart_xxx REE, Y and Zr mobility 59...biotite and sometimes sillimanite (Fig. 3a). Plagioclase may be zoned with an oligoclase centre (An14–24)...smectite, Ms – muscovite, Qz – quartz, Pl – plagioclase. eschweizerbart_xxx REE, Y and Zr mobility...the two-mica leucogranite (Qz – quartz, Pl – plagioclase, Kfs – K-feldspar). c: BSE image showing biotite...colour) amount of anorthite component in the plagioclase ranges from An21 to An34. High-grade metasediments |  | | Journal (article/letter/editorial) | | repositories M.Z. Min ) , J.P. Zhai, C.Q. Fang Department of Earth Sciences, Nanjing UniÕersity, Nanjing...The Sanerliu uranium deposit located in Hunan Province, South China, has a number of features analogous...Sanerliu granite-hosted uranium deposit in Hunan Province is a part of the management 0009-2541r98r$19...petrographically similar to the Beishan granite, Gansu Province in northwest China. The Beishan granite is the...The Sanerliu uranium deposit is located in Hunan Province, South China. The deposit is hosted by the Lujing |  | | Journal (article/letter/editorial) | | Mina,b,*, Changquan Fanga, Mostafa Fayekc a Department of Earth Sciences, State Key Laboratory of Mineral...Nanjing 210093, People’s Republic of China c Department of Earth and Planetary Sciences, University of...China 1. Introduction * Corresponding author. Department of Earth Sciences, State Key Laboratory of Mineral...deposits. The district is located in the Jiangxi Province, SE China, and is one of the most economically...composed of quartz (30% to 35%), K-feldspar (35%), plagioclase (An15–25; 20%), biotite (3%), muscovite (4 to |  | | Book | | Professor in the Earth and Planetary Science Department at the University of Tokyo. He was awarded the...System. JUN KORENAGA YIN is a Professor in the Department of Geology at the University of California, Davis...Germany, he expanded his research experience at the Department of Earth and Planetary Sciences at Harvard University...OZIMA Department of Earth and Planetary Science, University of Tokyo JUN KORENAGA Department of Geology...and Geophysics, Yale University QING-ZHU YIN Department of Geology, University of California, Davis |  | | Journal (article/letter/editorial) | | Precambrian, Tudor Gabbro, Canada, Ontario, Grenville Province (Hayatsu, A., et al.) 25 2 208 Igneous rocks,...deposits, uranium, U/Pb, Sr/Rb, Precambrian, Gabon, Oklo (Lancelot, Joel R., et al.) 25 2 189 Sedimentary...uranium, experimental studies, fission, fossil, Gabon, Oklo (Hagemann, Robert, et al.) 23 2 170 U/Pb, U/Th/Pb...Zone (Feden, R. H., et aL) 26 3 292 Mineralogy Plagioclase, regional, Mid-Atlantic Ridge (Bryan, W.B.) ...) 7 3 293 Magmas, distribution coefficients, plagioclase, melt, models (Korringa, M. K., etal.) 11 2 147 |  | | Journal (article/letter/editorial) | | Near-Surface Environments HEINRICH D. HOLLAND† Department of Earth and Planetary Sciences, Harvard University...has been more usefully applied to exploration and mine development in the Witwaterstrand basin than the... The giant iron ore deposits of the Hamersley province, Australia, are alteration products of BIF. The...the large hydrothermal uranium ores, those at Oklo, in Gabon, were formed 2,000 ± 50 Ma (i.e. close to the...McArthur basin, Australia, 1.6 Ga. B. Finland and Gabon, 2.0 to 2.15 Ga. C. Ventersdorp Group, South Africa |  | | Report (issue) | | CHAPTER 1: INTRODUCTION Kurt Kyser Department of Geological Sciences and Geological Engineering, Queen’s...engineered. Once an ore deposit is discovered, a mine is developed and U extracted by a variety of mining...Bay Basin in Canada and the Franceville Basin in Gabon, but at the boundary between sandstone and grey...the oldest deposits from the Franceville Basin in Gabon. Some of these latter deposits preserve the effects...gold mining. In Namibia, the large Rössing open cut mine has been in operation since 1976, and currently |  | | Journal (article/letter/editorial) | | ALLEGRE:Behavior of the rare earth elements in the Oklo natural reactor R. 0. JAMESand M. G. M\CNAL:GHTON:The...the Sudbury Nickel Irruptive and the Superior Province granites north of Sudbury . . . . . , . . . ....Appalachian belt acetate ion, effect on orthopyroxene acid mine drainage, Susquehanna River acidic springs, sulfur...F-Fe2 * avoidance in silicates _ . . . fission, Oklo aatural reactor . . . . . fission tracks, U in phosphorite.... functional groups. humic polymers. s . Gaban, Oklo ore deposit . . _ . gafena, Red Sea geothermal system |  | | Journal (article/letter/editorial) | | U-bearing minerals from the Vale de Abrutiga uranium mine area, Central Portugal Marina M. S. Cabral Pinto...uranium phosphates from Vale de Abrutiga uranium mine and Pinto et al. (2004) studied the pollution associated...U-bearing phases from the Vale de Abrutiga uranium mine, which occurs close to the contact with a Variscan...and geological map of the Vale de Abrutiga uranium mine. Modified from ENU (Internal Report). Geochemistry...using a Jeol electron-microprobe JX8600 at the Department of Earth Sciences, University of Bristol, U.K |
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