 | | Journal (issue) | | inéral Le gisementde manganèsede Moanda (Gabon) Sauvonsles calcites de Cadacu (Gard) NUMERO 41 Septembre...NIA.THIEU 0 LA FISSION NUCLÉAIRE NATURELLE DU GABON par Cédric LHEUR et Régis 1\>.UlTHIEU et Marie Curie...jou@leregnemineral.fr LE GISElVŒNT DE MANGANÈSE DE lVlOAND.t~ GABON par Cédric LHEUR LES QUARTZ "DIA.M.1-\.NT"DE LA...!IJ Les 111inéranx de la 111ine de Monnana (Gabon) Cédric LHEUR111m•ec la collaboration de Régis...Mo1111a,za est sit11éau Sud-Est du Gabon dans la région du Haut-Ogooué (chef-lieu Francerille, sous-préfect11rede |  | | 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 |  | | Journal (issue) | | 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...were unearthed.
Miscellaneous by-products at the mine were dumped, and
it was in this area of the operation...areas of the operation were visited, and the
actual “mine” and its operation were observed.
Of particular...identifying
natural crystals he finds in field,
quarry, mine or mountain.
By E. MITCHELL GUNNELL
Denver. Colorado |  | | 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 |  | | 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 |  | | 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 |  | | 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...when analyzing pitchblende from the
George Wagsfort mine at Johanngeorgenstadt,
Sachsisches Erzgebirge (Saxonian |  | | 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 |  | | 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 |  | | Journal (issue) | | LESAUfEURS MINÉRALOGŒ Pyromorphite- 4 x 3,8 cm Mine des Farges, Ussel, Corrèze Coll. : F. Benjamin -...CHIAPPERO P.-J., DIETRICH J.-E., GAL VIER J. ( 1997). La mine de SainteLucie, Lozère, France, un petit gîte pour...2000, 33: 35-37. CHIRON A. et FORNER H. (1997). La Mine d'or de Salsigne: géologie du site, Aude, France...D DAIN Y. (2001). La Villeder: historique de la mine, HS7 :26-39. le Règne Minéral. DAIN Y. ( 2001)...TIXADOR Y., CASTERET A. et GOUJOU J.-C. (2002). La mine de manganèse de Coustou, Vielle-Aure, Hautes-Pyrénées |  | 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...Melt.p.
1
()
0
. ~ 0
0
0
[~ 0 150
;;
0
0 OKlO
0
-h
adaman-
...'
0
0
--.£!'.L
r-t1",.....Kainite 319
Kalsilite 260
Kaolinite 31, 236-237
Karelianite = Corundum
Kawazulite = Tetradymite
Keatite 271 |
|