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![Figure 2. Map of the Oklo-Okélobondo mine at Mounana, showing the location...]()
![Figure 4. Profiles (A and B) and underground locations (C) of the gallery o...]()
![Figure 7. Typical microtextures of the core of <span class="search-highlight">RZOKE</span>. All microphotographs ...]()
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Journal Article
The Okélobondo natural fission reactor, southeast Gabon: Geology, mineralogy, and retardation of nuclear-reaction products
Journal: GSA Bulletin
Publisher: Geological Society of America
Published: 01 January 2001
GSA Bulletin (2001) 113 (1): 32–62.
...Keld Alstrup Jensen; Rodney C. Ewing Abstract Nuclear fission reactors occur in the Oklo-Okélobondo uranium deposit in southeast Gabon. The Okélobondo reactor zone (RZOKE, ∼310 m depth) was the last reactor zone to be excavated before mining was terminated in December 1997. RZOKE is situated...
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Image
Figure 2. Map of the Oklo-Okélobondo mine at Mounana, showing the location...
in The Okélobondo natural fission reactor, southeast Gabon: Geology, mineralogy, and retardation of nuclear-reaction products
> GSA Bulletin
Published: 01 January 2001
Figure 2. Map of the Oklo-Okélobondo mine at Mounana, showing the location of the natural fission reactors. The contours are on the surface of the FA sandstone formation. Reactor zones (RZ) 10, 13, and 16 and the Okélobondo reactor zone (RZOKE) are located underground. The other reactor zones
Image
Figure 4. Profiles (A and B) and underground locations (C) of the gallery o...
in The Okélobondo natural fission reactor, southeast Gabon: Geology, mineralogy, and retardation of nuclear-reaction products
> GSA Bulletin
Published: 01 January 2001
Figure 4. Profiles (A and B) and underground locations (C) of the gallery outcrops with RZOKE combined with radiometric surveys (insets). Note unconventional orientations. In the radiometric surveys, each square measures 0.5 × 0.5 m, and the contours have an interval of 200 γ counts/s
Image
Figure 7. Typical microtextures of the core of RZOKE. All microphotographs ...
in The Okélobondo natural fission reactor, southeast Gabon: Geology, mineralogy, and retardation of nuclear-reaction products
> GSA Bulletin
Published: 01 January 2001
Figure 7. Typical microtextures of the core of RZOKE. All microphotographs are taken in reflected light. (A) Broken and corroded uraninite in the U-rich part of the reactor core. The sample is cut by a veinlet with calcite that has been cut by a later-generation galena vein. Galena is also observed
