 | | Journal (article/letter/editorial) | | nucleogenic Pu in apatite and Pb evolution at the Oklo natural reactor KENJI HORIE,1 HIROSHI HIDAKA,*,1...1 and FRANÇOIS GAUTHIER-LAFAYE2 1 2 Department of Earth and Planetary Systems Science, Hiroshima University...of the boundary layer of reactor zone 10 at the Oklo natural reactor shows a unique petrologic texture...isotopic data from apatite, uraninite, galena and minium suggest the following chronological interpretations...intrusion of dolerite dyke 0.45⬃0.83 Ga ago. 4. Minium was derived from recent dissolution of galena under |  | | Journal (article/letter/editorial) | | in micro-minerals bearing fission products in the Oklo and Bangombé natural reactors: A review of a natural...migration of fission products H. Hidaka ∗ , M. Kikuchi Department of Earth and Planetary Systems Science, Hiroshima...Natural reactor Gabon Migration a b s t r a c t In the Precambrian, parts of the Oklo, Okélobondo and...Republic of Gabon, central Africa, functioned as natural fission reactors. Many elements in the Oklo and Bangombé...analyses on micro-minerals found in and around the Oklo and Bangombé natural reactors are reviewed in this |  | | Journal (article/letter/editorial) | | radiolysis on local redox conditions in the Oklo, Gabon, natural fission reactors 10 and 16 CREGU VI~RONIQIJE...significantly modify the local redox conditions. The Oklo natural fission zones are good examples where the...reactor zone, some radiogenic lead is present as minium (Pb,O,) and in Pb-bearing calcite. In the surrounding...oxidizing conditions prevailed and hematite and minium have formed. Consequently, presence of highly oxidizing...very low in zone 10 as shown by the formation of minium and higher in zone 16 with the formation of barite |  | | Journal (article/letter/editorial) | | Review A Review of In Situ Isotopic Studies of the Oklo and Bangombé Natural Fission Reactors Using Microbeam...Microbeam Analytical Techniques Hiroshi Hidaka Department of Earth and Planetary Sciences, Nagoya University...fission products, have been found in and around the Oklo and the Bangombé natural reactors. In the past two...compositions of various elements in and around the Oklo and Bangombé natural reactors vary significantly...like to review the isotopic results related to the Oklo and Bangombé reactors mainly based on my works using |  | | Journal (article/letter/editorial) | | Ma ago. The model explaining the formation of the Oklo uranium deposits suggests that at the time of sediment...Paleoproterozoic; Uranium; Manganese; Atmosphere; Oklo; Gabon; Carbon isotopes; Black shales 1. Introduction...Introduction The natural nuclear fission reactors in Gabon are unique. The possibility that nuclear fission reactions...occur 2.0 Ga ago in the Oklo uranium deposit of the Francevillian Series, Gabon (Neuilly et al., 1972)...in the Paleoproterozoic uranium ore deposits of Gabon. This observation raises the question whether this |  | | 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 |  | | Report (issue) | | Gauthier-Lafaye shows that the well-known Oklo sandstone-type uranium deposits of Gabon, which formed at ca. 2.1 Ga...post-depositional processes in uranium ores at the Stanleigh mine, Elliot Lake, Ontario, Canada.....................reactors in the Paleoproterozoic Franceville Basin (Gabon)..................................................38400 St. Martin d’Heres, France Allan J. Hall* Department of Archaeology, University of Glasgow, G12 8QQ...botryoids at a 350 Ma fossil warm spring at the Tynagh mine, Ireland: (A) The top surface (field of view measures |  | Fuchs, Sebastian H.J., Schumann, Dirk, Williams-Jones, Anthony E., Murray, Andrew J., Couillard, Martin, Lagarec, Ken, Phaneuf, Michael W., Vali, Hojatollah (2017) Gold and uranium concentration by interaction of immiscible fluids (hydrothermal and hydrocarbon) in the Carbon Leader Reef, Witwatersrand Supergroup, South Africa. Precambrian Research, 293. 39-55 doi:10.1016/j.precamres.2017.03.007 | Journal (article/letter/editorial) | | selected from the Carbon Leader Reef in the TauTona mine of the Carletonville goldfield for the purpose of...phases (e.g., litharge, plattnerite, massicot, minium, and scrutinyite) and lead sulfate phases (e.g...Witwatersrand Goldfields, the world’s largest gold province, in: Hedenquist, J.W., Thompson, J.F.H., Goldfarb...Lake, Canada, and the natural fission reactors, Oklo, Gabon, in: Parnell, J., Kucha, H., Landais, P. (Eds |  | | Book | | Silver Minerals 133 Silver Resources and Reserves 134 Mine Production of Silver 134 Silver Manufacture – Metallurgical...Technology 146 Brass – Copper and Zinc 147 The Copper Mine in Falun 148 Copper Ores 151 Copper Minerals 151...… 469 ... But China Has Most of It 470 Worldwide Mine Production and Reserves 471 Separation of the RE...5.3 21.6 21.7 Vanadium in Titaniferous Rock 543 Mine Production 544 Manufacture of Vanadium and Vanadium...Types of Minerals and Ores 597 World Resources, Mine Production and Ore Concentration 598 Manufacture |  | Gaines, Richard V., Skinner, H. Catherine W., Foord, Eugene E., Mason, Brian, Rosenzweig, Abraham, King, Vandall T. (1997) Dana's New Mineralogy (8th ed.) Wiley-Interscience. p.1872 | Book (edition) | | information should be addressed to the Permissions Department, John Wiley & Sons, Inc., 605 Third Avenue, New...the late Horace Winchell of Yale University, Department of Geology and Geophysics, and Brian J. Skinner...British Columbia NF Labrador (part of Newfoundland Province) MB Manitoba NB New Brunswick NF Newfoundland...Spotsylvania Co., and Partridge mine, Orange Co., VA, and at Dahlonega, GA; Homestake mine, Lawrence Co., SD; Silver...Lake Co., Breckenridge(*), Summit Co., Ground Hog mine(*), Gilman Co., Silverton and Telluride, San Juan |  | | Book | | RamdohrlStrunz Klockmann's Lehrbuch der Mineralogie is a mine of rich crystalchemical information, perhaps the... ~ .~~~ . ~ - ... --~ ---.'IIIi!h!91JIM! z: MINe ~f$OOEE Fig. 51. Hooke's drawing emphasizing the..." r-t1",.., 0 0 0 ,., ...' ( ;; 0 150 0 OKlO 0 0 --.£!'.L fJ ( ( 0 .~ ,. " tine Description...Zoltai + Stout (1984) 402. ~ Fig. 4 " 204 MINIUM IIClr!l [IV 0 Pb 1 Pb 2 00 Fj g. = c = z=...Fig. 1. Representation of the structural unit of minium: Pb~ 04 (110) planes, and also with the strong |  | | Book | | e n t s . indebted to many I a m also greatly mine and e x p l o r a t i o n geologists, too n u m...amphibolites in m a n y p a r t s of the Grenville province of O n t a r i o a n d e l s e w h e r e in...n t i o n an e x a m p l e a t t h e P r i n c e Mine, Lincoln C o u n t y , N e w Mexico. T h e r e...s a n d w a s t e ; t h e C l i m a x Molybdenum Mine a t C l i m a x , C o l o r a d o also c o n t a... N.W.T., C a n a d a ; F r a n c e v i l l e , Gabon). is h i g h . pulverulent Yb, are p r e s e |
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