 | | Report (issue) | | the deposits of Mas Laveyre (France) and Mikouloungou (Gabon). 5 3. Hematite breccia complex deposits:...material, mainly pitchblende. Typical examples range from the thick and massive pitchblende veins of Pribram...granite or metamorphic rocks, also filled with pitchblende of Mina Fe (Spain) and Singhbhum (India). 6....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, |  | | Journal (article/letter/editorial) | | Paleoproterozoic natural nuclear fission reactors of Oklo, Gabon: paragenesis, thermal maturation and carbon isotopic...François Gauthier-Lafaye b, Simon E. Jackson c,1 a Department of Physics, Engineering and Geoscience, Mount...France c Centre for Earth Resources Research, Department of Earth Sciences, St. John’s, Newfoundland,...Oklo. The categories include kerogens of the Mikouloungou ‘coal’ in the FA Formation, the C1 pelites of...Introduction The Paleoproterozoic Franceville Series of Gabon has been described as the most impressive sedimentary |  | | Journal (article/letter/editorial) | | Francevillian(Lower Proterozoic)Uranium Ore Depositsof Gabon F. GAUTHIER-LAFAYE AND F. WEBER Centrede Sddimentologie...lowerProterozoicuraniumore depositsin the Francevillebasin(Gabon)are the oldest high-gradeuraniumaccumulations known...(Bonhommeet al., 1982; Gauthier-Lafaye, in southeastern Gabon and rests on the Archean 1986). (2,700 Ma) basementrocksof...Geologicmap of Gabon.Insert showsthe locationof Gabon in Africa. teau,the StanleyPool,andthe Batekeplateauseries... FRANCEVILLIAN U DEPOSITS,GABON Oklo - Okelobondo Mounana, Boyindzi I NW I Bangombe Mikouloungou / , Kiene |  | | Journal (article/letter/editorial) | | generation in the Paleoproterozoic Franceville Series, Gabon David J. Mossman a,∗ , François Gauthier-Lafaye...Gauthier-Lafaye b,1 , Simon E. Jackson c,2 a c Department of Geography, Mount Allison University, 144 Main St. Sackville...Formation of the Franceville Series, southeastern Gabon, contains one of the greatest accumulations of organic...Organic matter; Geochemistry; Paleoproterozoic; Gabon 1. Introduction The 2.1 Ga old black shales of...of the Franceville Series, Republic of Gabon (Fig. 1) rank as one of the major Precambrian accumulations |  | | Book | | ........................................... 36 Gabon .................................................. and by the early part of the 18th centu ry pitchblende was recognized by the miners as a distinct substance...produced "uranium" powder in 1789 by reducing pitchblende with charcoa l. This p roduct was assumed to...and G. Bemont isolated the element radium from pitchblende mined at Jachymov. Later work by Ernest Rutherford...uranium if higher prices justify reprocessing the mine tailings to recover some of the uranium that was |  | | Book | | (individual deposit) and regional scale (uranium province). Their ideas, observations, and data have directly...Granite-Related Vein Uranium Deposits: Schwartzwalder Mine, Front Range, USA ................................Uranium Deposits: Shinkolobwe, Katanga Copper Province, Zaire .........................................Deposits in Proterozoic Sandstones: Franceville Basin, Gabon ......................... 224 232 237 246 250 250...but also in vein and veinlike-type deposits. "Pitchblende" is used for U0 2 + x varieties of micro- or |  | De Vivo, B., Ippolito, F., Capaldi, G., Simpson, P. R. - Eds. (1984) Uranium geochemistry, mineralogy, geology, exploration and resources. Springer Netherlands. doi:10.1007/978-94-009-6060-2 | Book | | were unknown until 1780, when Wagsfort found a pitchblende sample in 10hanngeorgenstadt. This discovery...species of a zinc mineral-hence the n':lme 'pitchblende' (= pitch-like blende). Seven years later, Klaproth...the separation and, in so doing, reduced the pitchblende. His attempt was not successful and only U02...which, in 1780, Wagsfort had found the first pitchblende sample. The other known mineral deposits at that...Becquerel discovered the radioactive property of pitchblende and the Curies isolated radium. Suddenly scientists |  | | Report (issue) | | UNITED STATES DEPARTMENT OF THE INTERIOR GEOLOGICAL SURVEY PRINCIPAL URANIUM DEPOSITS OF THE WORLD ...Angola, Peoples Republic of........................ Gabon, Republic of................................. Central...minerals (pitchblende and uraninite) occur either in extensive bedded deposits of pitchblende in sedimentary...Saskatchewan, Canada; the Shinkolobwe, Katanga Province, Zafre; and the medium-sized deposits at Joachymov...Joachymov, Czechoslovakia, and at Schwartzwalder mine, Colorado, U.S.A.). Uranium deposits have been found |  | | Journal (article/letter/editorial) | | the Oklo and Bangombé natural fission reactors, Gabon LENA Z. EVINS,1,* KELD A. JENSEN,2,3 and RODNEY...Museum of Natural History, Stockholm, Sweden Department of Geological Sciences, University of Michigan...reactors formed ca. 2 Ga ago in the Franceville basin, Gabon. The response of uraninite in the natural reactors...situated in the ca. 2 Ga old Franceville basin, SE Gabon, and formed contemporaneously with the other U deposits...in the Franceville Basin: Boyindzi, Mounana, Mikouloungou and Kiene (Fig. 1). Unique to the Oklo-Okélobondo |  | | Report (issue) | | SALVADOR ERITREA ESTONIA ETHIOPIA FIJI FINLAND FRANCE GABON GEORGIA GERMANY GHANA GREECE GUATEMALA GUYANA HAITI... Description of a selected deposit: The Denison mine deposit (Canada) ....... 304 Surficial deposits...between two formations within the basin (Oklo, Gabon). HMm: hydrothermal–metamorphic deposits result...Slovakia); Subtype 4.3. Volcano-sedimentary (Anderson Mine, USA; Sierra Pintada district, Argentina). Type...Wash type, USA). Subtype 9.3. Roll-front (Wyoming Province, USA; Chu-Sarysu Basin, Kazakhstan): Class 9.3 |  | | Journal (article/letter/editorial) | | redox boundary at about 2.0 Ga in the Oklo area of Gabon. All known economically significant uranium deposits...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...Uranium district of Australia, in the Superior province of Canada, the Amazon craton of Brazil, the Dharwar..., 1998; Drüppel et al., 2009). In the Wyoming province, TTG are restricted to rocks older than 2.8 Ga |  | | Book | | ........................................... 75 Gabon ..................................................by the early part of the eighteenth century, pitchblende was recognized by the miners as a distinct substance...produced "uranium" powder in 1789 by reducing pitchblende with charcoal. This product was assumed to be... Be111ont isolated the element rad ium from pitchblende mined at Jachymov. Later work on radjoactive...vvastewater during environmental reclamation at a mine that has ceased production. The following statistical |  | | Report (issue) | | CHAPTER 1: INTRODUCTION Kurt Kyser Department of Geological Sciences and Geological Engineering, Queen’s...Nancy, France michel.cuney@g2r.uhp-nancy.fr the pitchblende led to the discovery of Po and Ra shortly thereafter...precipitated a yellow compound by dissolving pitchblende in nitric acid and neutralizing the solution...(Becquerel 1896). Realization that U isolated from pitchblende was less radioactive than Short course co-sponsored...engineered. Once an ore deposit is discovered, a mine is developed and U extracted by a variety of mining |  | | Report (issue) | | SALVADOR ERITREA ESTONIA ETHIOPIA FIJI FINLAND FRANCE GABON GEORGIA GERMANY GHANA GREECE GUATEMALA GUYANA HAITI.........................................59 3.3.4. Mine data .............................................Rössing in Namibia and the closure of the Kayelekera mine in Malawi as a result of low prevailing uranium...Republic France China Democratic Republic of the Congo Gabon Hungary Romania Tajikistan Bulgaria India Kyrgyzstan...nuclear fuel production. Other concerns impacting mine development include geopolitical factors, technical |  | | Journal (article/letter/editorial) | | grade in the PCO is reported at the Palette uranium mine (2.45% U). However, this deposit is small with total...including dolomite, ankerite and calcite. Colloform pitchblende is the dominant ore mineral, with minor bismuthinite...of the Willyama Supergroup (southern Curnamona Province). The north–south trending Benagerie Ridge runs...and Mount Babbage inliers (northern Curnamona Province), part of the northern Flinders Ranges. The Lake...granites and felsic rocks within the Curnamona Province, including the Ninnerie Supersuite. Modified after |  | | Report (issue) | | the PLTSYM computer system published by the US Department of Energy [1]. Financial assistance for this...literature. An example was with the Osamu Utsumi mine in Brazil. This deposit has been reported in the...America, the classification scheme used by the U.S. Department of Energy (U.S. DOE) [4] is described in Annex...uranium occurrences identified during the US Department of Energy's National Uranium Resources evaluation...The given name for the occurrence or deposit. PROVINCE The major region political subdivision of the |  | | 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) | | well-known Oklo sandstone-type uranium deposits of Gabon, which formed at ca. 2.1 Ga, are best explained...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 |  | | Book | | the references. Brian Knyn and Eunice Cheung (Department of Industry and Resources library) managed to...Deposit, Abitibi-Wawa Greenstone Belt, Superior Province, Canada . . . . . . . . . . . . . . . . . . .... . . . 992 9.7.2 Central Australian Heat Flow Province . . . . . . . . . . . . . 995 9.8 An Unusual Amagmatic...deposit, ore deposit, mineral occurrence, prospect, mine, reserves and resources are familiar, but more rigorous...geoenvironmental mineral deposits models: U. S. Department of the Interior, U S Geol Surv Open File Rep |  | | Report (issue) | | OFFICE, WASHINGTON: 820 1973 UNITED STATES DEPARTMENT OF THE INTERIOR JAMES G. WATT, Secreta·ry GEOLOGICAL...must know not only in which direction a particular mine opening should be extended to continue in an ore...changing as the advance of technology permits us to mine or process minerals that were once too low in grade...technologic advances will make it profitable to mine resources that would be much too costly to produce...United States," prepared at the request of the Department of the Interior, in which it reported estimates |  | | Book (edition) | | • t --•- """"" ' The Lornex copper-molybdenum mine and plant, Highland Valley, British Columbia. (By...information should be addressed to the Permissions Department, John Wiley & Sons. Library of Congress Cataloging...measurements have been retained in specific cases such as mine levels when measured in feet, values of gold and...developing an annual ton of new copper capacity from mine through the refinery without intrastructure costs...fold in three years. As an example, the " Surface Mine Control and Reclamation Act,' ' which was initially |
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