 | | Journal (article/letter/editorial) | | 323--336 (1972) © by Springer-Verlag 1972 La province urani~re du bassin de Franceville (R6publique...j. BOURREL Marseille, France j. P. PFIFFELMANN Mounana, R@ublique Gabonaise, Afrique La s6rie s~dimentaire...sedimentary series of the Franceville Precambrian basin (Gabon Republic) consists of two successive sandstony-pelitic...<~Francevillien>> d6couvre l'important gisement de Mounana. 324 J. BOURREL et J. P. PFIEFEL~ANN + ~,...1958 et F. WEBER 1969; Echelle: 1/5.000.000 La province uranif4re Les travanx de reconnaissance se poursuivent |  | Ndongo, Alexis, Guiraud, Michel, Vennin, Emmanuelle, Mbina, Michel, Buoncristiani, Jean-François, Thomazo, Christophe, Flotté, Nicolas (2016) Control of fluid-pressure on early deformation structures in the Paleoproterozoic extensional Franceville Basin (SE Gabon) Precambrian Research, 277. 1-25 doi:10.1016/j.precamres.2016.02.003 | Journal (article/letter/editorial) | | Paleoproterozoic extensional Franceville Basin (SE Gabon) Alexis Ndongo a , Michel Guiraud a,∗ , Emmanuelle...et Techniques de Masuku, B.P. 943, Franceville, Gabon c AREVA Mining Business Group Tour AREVA, 1 place...Outline of the geology of Gabon The emplacement of various geological domains of Gabon is associated with the...is represented by the Chaillu massif in southern Gabon and the Monts de Cristal in the north (Fig. 1)....two sub-domains: (Sub-domain 1) The metamorphic Ogooué block (Fig. 1) is characterized by compressive |  | Préat, Alain, Bouton, Pascal, Thiéblemont, Denis, Prian, Jean-Pierre, Ndounze, Serge Simo, Delpomdor, Franck (2011) Paleoproterozoic high δ13C dolomites from the Lastoursville and Franceville basins (SE Gabon): Stratigraphic and synsedimentary subsidence implications. Precambrian Research, 189 (1) 212-228 doi:10.1016/j.precamres.2011.05.013 | Journal (article/letter/editorial) | | from the Lastoursville and Franceville basins (SE Gabon): Stratigraphic and synsedimentary subsidence implications...Serge Simo Ndounze d , Franck Delpomdor a a Department of Earth Science and Environmental Sciences,...des Mines et de la Géologie, BP 284 Libreville, Gabon b a r t i c l e i n f o Article history: Received...Stable isotopes Paleoproterozoic Francevillian Group Gabon a b s t r a c t New data for the isotopic composition...shallow-marine sedimentary carbonates in southeastern Gabon (Franceville and Lastoursville sub-basins) indicate |  | | Report (issue) | | c = 13.98 Z=6 X-ray Powder Pattern: Outokumpu mine, Finland; close to hematite. 1.70 (100), 2.71 (90)...(1) 4.1 92.9 3.7 1.5 Total 102.2 (1) Outokumpu mine, Finland; by electron microprobe. Mineral Group:...quartzites (Outokumpu mine, Finland); in primary unoxidized U–V ores (Mounana mine, Gabon); in vanadiferous...Pyrrhotite, chalcopyrite, pyrite, tremolite, graphite, titanite, quartz (Outokumpu mine, Finland); corvusite...corvusite, montroseite, uraninite, quartz (Mounana mine, Gabon); millerite, violarite, montroseite (Guangxi, |  | | Book | | ........................................... 36 Gabon ..................................................uranium if higher prices justify reprocessing the mine tailings to recover some of the uranium that was...wastewater during environmental reclamation at a mine that has ceased production. The following statistical...was about 270 tU. In Argentina the Sierra Pintada mine had been in standby status since 1999 and was expected...recovered from mine rehabilitation activities; small amounts were likewise recovered during mine remediation |  | | Journal (issue) | | James R. Winchell The Uranium-Vanadium Deposit of Mounana, G a b o n ......................................THINK YOU HAVE FOUND A NEW MINERAL? Pete J. Dunn Department of Mineral Sciences Smithsonian Institution Washington...species, the locality, and the particular part of the mine or quarry from which the spec imens came, the date...KRISTALLE FIN E COLLECTOR MIN ERALS PERUVIAN SULFIDES Pyrite, Sphalerite, Tetrahedrite and Quartz Combinations...were unearthed. Miscellaneous by-products at the mine were dumped, and it was in this area of the operation |  | | Journal (article/letter/editorial) | | most famous locality, Katanga district (Shaba Province), Zaire. Most of the uraninite-bearing veins in...these minerals are silver, silver sulfo-salts, pyrite, galena, sphalerite, and tetrahedrite-tennantite...processes. Figure 5 (above): Cuprosklodowskite, Musonoi mine, Zaire. Photo by Lou Perloff. Figure 6 (right):...weathering of the crystal surface. The Daybreak mine in Washington has produced the finest United States...crystals were mined from the nowabandoned Shinkolobwe mine in Zaire. A large amount of remarkable yellow-orange |  | | Book | | there are many people who, on seeing a crystal of pyrite or quartz, can scarcely believe that it is the...rhombododecahedrons, or solids with twelve rhomboid faces (pyrite), and sometimes pyramidal cubes (native copper)...Artinite - Hydro magnesite Sulphur Native Sulphur Pyrite Marcasite Gold Native Gold Silver Native Silver...Orpiment 66 Plancheite 100 Prehnite 44 Pronsite 64 Pyrite 60 Pyromorphite 78 Quartz and its varieties . 16...which it was discovered in Badakhshan, an Afghan province situated at the foot of the Pamir Mountains. The |  | Giuliani, G., Ohnenstetter, D., Palhol, F., Feneyrol, J., Boutroy, E., De Boissezon, H., Lhomme, T. (2008) KARELIANITE AND VANADIAN PHLOGOPITE FROM THE MERELANI HILLS GEM ZOISITE DEPOSITS, TANZANIA. The Canadian Mineralogist, 46 (5) 1183-1194 doi:10.3749/canmin.46.5.1183 | Journal (article/letter/editorial) | | silicate minerals crystallize on the margins of pyrite and V-bearing pyrrhotite lenses, which are cross-cut...vanadifère sont formées en bordure de lentilles de pyrite et de pyrrhotite vanadifère, et recoupées par des...quartz veinlets formed along the edge of pyrrhotite–pyrite lenses. In this study, we present the first results...are concentrated in quartz veins with graphite, pyrite, pyrrhotite and chalcopyrite. High-temperature... and the primary U–V ores from the Mounana uranium mine in Gabon (Gauthier-Lafaye & Weber 2003). It is |  | | Catalog/List | | (1950-1960) in the prolific African fields of Mounana, Gabon and Shaba, Zaire (then Katanga, Belgian Congo)...Gilbert Gauthier, a noted mining engineer in Shaba Province at the time, states that "You could have been...of the Mine" collection, assembled as a museum display in the offices of the Shinkolobwe mine, was ordered...from this locality today. The situation at Mounana, Gabon was quite different. Here a number of specimen...sorting could take place. An excellent account of Mounana is found in The Mineralogical Record, Vol. 6:237-249 |  | | Journal (article/letter/editorial) | | Paukkajanvaara in Finland, Tarkwa-Abossoin Ghana, and Mounana in Gabon. The Russianwork is basedentirelyuponwesternliterature...Reef), Luipaards Vici Estates, South Africa. Run-of-mine ore. Quoted from J. E. Clay and C. F. B. Coetzee...sideof the Finland-U.S.S.R. frontier, in the Koli province,uraniumhasbeenworked from ancientJatulian quartzitesand...banket fieldreviewed in thismonograph isthatof Mounana •inGabon.In thisdistrictof Equatorial Africa,Frenchgeologists...blackoxidesof uraniumand vanadium,togetherwith pyrite, galena,chalcopyriteand wulfenite (but with no |  | | Report (issue) | | 100.00 (1) Bitter Creek mine, Colorado, USA; partial analysis. (2) Matchless mine, Colorado, USA. (3) VO(OH)...hewettite, melanovanadite, pascoite, hummerite, pyrite, galena, barite, quartz. Distribution: In the USA...and the Matchless mine, Gateway district, Mesa Co., Colorado; in the Juniper mine, near Thompson, Grand...Grand Co., the Rex No. 2 mine, Temple Mountain, and Mi Vida mine, Monticello district, Emery Co., Utah...mines, Carrizo Mountains, and the Monument No. 2 mine, Monument Valley, Apache Co., Arizona; in the Grants |  | | Journal (article/letter/editorial) | | 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...Oklo uranium deposit of the Francevillian Series, Gabon (Neuilly et al., 1972). Other uranium deposits of...in the Paleoproterozoic uranium ore deposits of Gabon. This observation raises the question whether this...originally oxidised. Pyrite accumulations are common in these green sandstones. Pyrite corrodes both the |  | | 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...ins five other uranium ore deposits:Boyindzi, Mounana,Okelobondo,Bangomb6,and Mikouloungou.For thisreasononlythe |  | | Journal (article/letter/editorial) | | LOWER PROTEROZOIC SEDIMENTS: THE FRANCEVILLIAN IN GABON M.G. BONHOMME, F. GAUTHIER-LAFAYE and F. WEBER...Lower Proterozoic sediments: the Francevillian in Gabon. Precambrian Res., 18: 87--102. New mineralogical...the upper part o ~ t h e Ogoo~ River basin in the Gabon Republic. The discovery, in 1972, of natural nuclear...and gypsum and the non oxidized facies contains pyrite and asphaltic material. The limit between red and...the t o p of the formation, namely in Oklo and Mounana. 2. F B F o r m a t i o n . Slightly discordant |  | | Report (issue) | | Occurrence: Dolomite, calcite, quartz, uraninite, pyrite, chalcopyrite, galena, ilmenite, hematite, carnotite...Lake Athabaska, and at the Ace mine, the Consolidated Nicholson Mine No.2, and the Pitche claims, Beaverlodge...Valley, Montrose Co., Colorado, and in the Campbell mine, Bisbee, Cochise Co., Arizona, USA. In several mines...Kalgoorlie, Western Australia. From the Mounana uranium mine, Franceville, Gabon. Distribution: To honor Dr. Thomas |  | | Report (issue) | | Association: Dolomite, calcite, quartz, uraninite, pyrite, chalcopyrite, galena, ilmenite, hematite, carnotite...Lake Athabaska, and at the Ace mine, the Consolidated Nicholson Mine No. 2, and the Pitche claims, Beaverlodge...Valley, Montrose Co., Colorado, and in the Campbell mine, Bisbee, Cochise Co., Arizona, USA. In several mines...Kalgoorlie, Western Australia. From the Mounana uranium mine, Franceville, Gabon. Name: To honor Dr. Thomas Brennan |  | | Report (issue) | | 5.13 Total 99.58 Chemistry: (1) Stuckslager mine, California, USA. Polymorphism & Series: Mineral...low-temperature sedimentary U-V ores. Association: Quartz, pyrite, carbonates, °uorite, gold (Au-Ag-Te mineral association);... Distribution: In the USA, from the Stuckslager mine, Lotus, El Dorado Co., California; in Colorado,...Miguel, and Dolores Cos. From the Spotted Horse mine, Maiden, Fergus Co., Montana; the Baker, Mammoth...mines, Baker Co., Oregon; in the Monument No. 2 mine, Apache Co., and Monument No. 1 and Mitten No. 2 |  | | Catalog/List | | gossan in association. 2!-x2". £1.25. Hingston Down Mine, Gunnislake, Cornwall. Rich apple green crystaline...granite. 2tx2t". £1. BARYTDCALCITE.Nentsberry Haggs Mine, Alston, Cumberland. Well formed sheaves of pale...Erythrite. 2xltxH". £3.5C. . 11. BOhNITE. Levant Mine, Pendeen, Cornwall. An unusual specimen showing...sulphidic matrix. 4x2t". £5. 14. BROCHANTITE. Geevor Mine, Pendeen, Cornwall. Rich emerald green crystalised...Basalt matrix 4x3". £3. 17. CASSITEhITE. Goonbarrow Mine, Bugle, Nr. St. hustell, Corm/a 11. A pure resinous |  | | Catalog/List | | and masses. 3x4½x2½" $125. 00. 2. SILVER Amethyst mine, Creede, Mineral Co., Colorado. Dull silvery metallic...00. 7. GOLD Mina St. Georges, Province of Antonio) Chile. vein in pyrite and quartz mat.rix. l½x2¾:! ~150...terminations. 3x3½x2" $35.00. 30. ANHYDRITE Eagle Picher mine, Niaca, Chihuahua, Mexico. radiating elongated etched...minor muscovite. 2½x3½xh" $150. 00. 33. AZURITE Czar mine, Bisbee, Cochise Co., Arizona. Choice dee~ blue...2¼x2¼xh" $150. 00. 34. BECQUERELITE Shinkolobwe mine, Shaba, Zaire. Superb bone,-yellow to brownisbgolden | | | Catalog/List | | and masses. 3x4½x2½" $125. 00. 2. SILVER Amethyst mine, Creede, Mineral Co., Colorado. Dull silvery metallic...00. 7. GOLD Mina St. Georges, Province of Antonio) Chile. vein in pyrite and quartz mat.rix. l½x2¾:! ~150...terminations. 3x3½x2" $35.00. 30. ANHYDRITE Eagle Picher mine, Niaca, Chihuahua, Mexico. radiating elongated etched...minor muscovite. 2½x3½xh" $150. 00. 33. AZURITE Czar mine, Bisbee, Cochise Co., Arizona. Choice dee~ blue...2¼x2¼xh" $150. 00. 34. BECQUERELITE Shinkolobwe mine, Shaba, Zaire. Superb bone,-yellow to brownisbgolden |  | | Book | | ........................................... 75 Gabon ..................................................vvastewater during environmental reclamation at a mine that has ceased production. The following statistical...Saskatchewan, is the world's largest high-grade uraniu1n mine. The ore from that ,nine is crushed and treated...to start production at the Talvivaara Ni-Zn-Cu-Co mine, ,vhere bio-heap leaching is used to extract metals...Production is expected to grow when the Four Mile ISL mine comes on strea1n, and planned expansion of Olympic |  | | Report (issue) | | UNITED STATES DEPARTMENT OF THE INTERIOR GEOLOGICAL SURVEY PRELIMINARY RESULTS FROM MICRQANALYSES OF...IN THE LOWER PROTEROZOIC URANIUM ORES AT OKLO IN GABON By Joel S. Leventhal , Bartholomew Nagy2 , and...CO 80225 p Laboratory of Organic Geochemistry, Department of Geosciences, The University of Arizona Tucson...Francevillian Series at Oklo in the Republic of Gabon generally show an intimate association with organic...in six samples from the Francevillian basin in Gabon were analyzed in relation to uranium content and |  | | Journal (article/letter/editorial) | | wifh zircon, rutile, corundum, topaz, braite, and pyrite. They .w'ere not found in the crystalline rocks...small amounts in the Lr-V deposit of Mounana, Haut-Ogoue, Gabon, Africa (the tlpe locality for francevillite...and rare gaudefroyite in the Tachgagalt manganese mine, Morocco. Calcite is commonly present. The name...l9l-t95. Analysis by M.Ir. of material from Oriente Province, Cuba, shown by X-ray data to be identical with...fluor-apatite and carbonate-apatite; (2) from Stella Gwyn mine, Cornwall consisting of wavellite. The optical data |  | | Journal (article/letter/editorial) | | umangite, 6 other selenides,as well as chalcopyrite, pyrite, pitchblende, hematite, goethite, and native gold...the oxidation zone of the uranium deposit a:t Mounana, Gabon, associated with duttonite and lenoblite (Amer...of the zone of oxidation of the V deposit of Mounana, Gabon. The name is for H.-J. Schubnel, mineralogist...neues Mineral aus den oxidationszonen der Tsumeb-Mine, siidwest afika. Neues Jahrb. Mi,neral., Monatsh...Microprobe analyses of samples from the Martin Lake mine and from the Eagle claims near llal Lake, both in |
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