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Oklo Mine, Franceville, Haut-Ogooué Province, Gaboni
Regional Level Types
Oklo MineMine
Franceville- not defined -
Haut-Ogooué ProvinceProvince
GabonCountry

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Latitude & Longitude (WGS84): 1° 30' South , 13° 16' East
Latitude & Longitude (decimal): -1.50000,13.26667
GeoHash:G#: kr9rmyumz
Locality type:Mine
Köppen climate type:Aw : Tropical savanna, wet


This mine near the Mouana Mine is the site of over a dozen precambrian natural nuclear reactors. It is particularly known as the "Oklo phenomenon". Secondary enrichment of uranium oxides in cm to meter sized veins moderated by ground water consumed six tons of U-235 and elevated temperatures to a few hundred Celsius. This uranium isotope, normally standing for less than 1% of the uranium ore, is predicted to be at 3% level in Oklo in the beginning (now relatively strongly depleted). Remarkably the non-volatile fission products moved only a few cm in the veins during the last 1.5 billion years!

Gillberg-Wickmann (1983) points at Oklo as the only natural example of a significant isotope fractionaction between U-235 and U-238.

Meshik (2005) states, that (1) U-free Al phosphate minerals from the deposit concentrate the highest amount of xenon found in natural material; (2) once upon a time over 2 tons of plutonium 239 were generated within the deposit.

See also Bangombé, another natural nuclear reactor in the same area.

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


43 valid minerals.

Detailed Mineral List:

'Albite-Anorthite Series'
Reference: Lena Z. Evins, Keld A. Jensen, Rodney C. Ewing, Uraninite recrystallization and Pb loss in the Oklo and Bangombé natural fission reactors, Gabon, Geochimica et Cosmochimica Acta, Volume 69, Issue 6, 15 March 2005, Pages 1589-1606, ISSN 0016-7037, 10.1016/j.gca.2004.07.013.
Baryte
Formula: BaSO4
Reference: Douglas G. Brookins (1982) Migration and retention of elements at the Oklo natural reactor. Environmental Geology Volume 4, Issue 3-4 , pp 201-208
Bassetite
Formula: Fe2+(UO2)2(PO4)2 · 10H2O
Reference: Lena Z. Evins, Keld A. Jensen, Rodney C. Ewing, Uraninite recrystallization and Pb loss in the Oklo and Bangombé natural fission reactors, Gabon, Geochimica et Cosmochimica Acta, Volume 69, Issue 6, 15 March 2005, Pages 1589-1606, ISSN 0016-7037, 10.1016/j.gca.2004.07.013.
Bornite
Formula: Cu5FeS4
Reference: Janusz Janeczek (1999) Mineralogy and geochemistry of natural fission reactors in Gabon. Reviews in Mineralogy and Geochemistry, MSA, v. 38, p. 321-392
Calcite
Formula: CaCO3
Reference: Econ Geol (1989) 84:2286-2295; Lena Z. Evins, Keld A. Jensen, Rodney C. Ewing, Uraninite recrystallization and Pb loss in the Oklo and Bangombé natural fission reactors, Gabon, Geochimica et Cosmochimica Acta, Volume 69, Issue 6, 15 March 2005, Pages 1589-1606, ISSN 0016-7037, 10.1016/j.gca.2004.07.013.; Janusz Janeczek (1999) Mineralogy and geochemistry of natural fission reactors in Gabon. Reviews in Mineralogy and Geochemistry, MSA, v. 38, p. 321-392
Chalcopyrite
Formula: CuFeS2
Reference: Douglas G. Brookins (1982) Migration and retention of elements at the Oklo natural reactor. Environmental Geology Volume 4, Issue 3-4 , pp 201-208; Janusz Janeczek (1999) Mineralogy and geochemistry of natural fission reactors in Gabon. Reviews in Mineralogy and Geochemistry, MSA, v. 38, p. 321-392
Chervetite
Formula: Pb2(V2O7)
'Chlorite Group'
Reference: Econ Geol (1989) 84:2286-2295; Lena Z. Evins, Keld A. Jensen, Rodney C. Ewing, Uraninite recrystallization and Pb loss in the Oklo and Bangombé natural fission reactors, Gabon, Geochimica et Cosmochimica Acta, Volume 69, Issue 6, 15 March 2005, Pages 1589-1606, ISSN 0016-7037, 10.1016/j.gca.2004.07.013.; Douglas G. Brookins (1982) Migration and retention of elements at the Oklo natural reactor. Environmental Geology Volume 4, Issue 3-4 , pp 201-208; Janusz Janeczek (1999) Mineralogy and geochemistry of natural fission reactors in Gabon. Reviews in Mineralogy and Geochemistry, MSA, v. 38, p. 321-392
Coffinite
Formula: U(SiO4) · nH2O
Reference: Lena Z. Evins, Keld A. Jensen, Rodney C. Ewing, Uraninite recrystallization and Pb loss in the Oklo and Bangombé natural fission reactors, Gabon, Geochimica et Cosmochimica Acta, Volume 69, Issue 6, 15 March 2005, Pages 1589-1606, ISSN 0016-7037, 10.1016/j.gca.2004.07.013.; Janusz Janeczek (1999) Mineralogy and geochemistry of natural fission reactors in Gabon. Reviews in Mineralogy and Geochemistry, MSA, v. 38, p. 321-392
Copper
Formula: Cu
Reference: Janusz Janeczek (1999) Mineralogy and geochemistry of natural fission reactors in Gabon. Reviews in Mineralogy and Geochemistry, MSA, v. 38, p. 321-392
Covellite
Formula: CuS
Reference: Janusz Janeczek (1999) Mineralogy and geochemistry of natural fission reactors in Gabon. Reviews in Mineralogy and Geochemistry, MSA, v. 38, p. 321-392
Curienite
Formula: Pb(UO2)2(VO4)2 · 5H2O
Dewindtite
Formula: H2Pb3(UO2)2(PO4)4O4 · 12H2O
Digenite
Formula: Cu9S5
Reference: Janusz Janeczek (1999) Mineralogy and geochemistry of natural fission reactors in Gabon. Reviews in Mineralogy and Geochemistry, MSA, v. 38, p. 321-392
Duttonite
Formula: V4+O(OH)2
Fluorapatite
Formula: Ca5(PO4)3F
Reference: Radiochimica Acta (1996), 74 277-282.; Janusz Janeczek (1999) Mineralogy and geochemistry of natural fission reactors in Gabon. Reviews in Mineralogy and Geochemistry, MSA, v. 38, p. 321-392
Fourmarierite
Formula: Pb(UO2)4O3(OH)4 · 4H2O
Reference: Janusz Janeczek (1999) Mineralogy and geochemistry of natural fission reactors in Gabon. Reviews in Mineralogy and Geochemistry, MSA, v. 38, p. 321-392
Francevillite
Formula: Ba(UO2)2(VO4)2 · 5H2O
Reference: Janusz Janeczek (1999) Mineralogy and geochemistry of natural fission reactors in Gabon. Reviews in Mineralogy and Geochemistry, MSA, v. 38, p. 321-392
Galena
Formula: PbS
Reference: Lena Zetterström and Torbjörn Sunde (2000). Galena Crystallization and the Origin of Sulfur in the Oklo and Bangombé Natural Reactors: The Effects of a ca. 900 Ma Thermal Event. MRS Proceedings, 663, 953 doi:10.1557/PROC-663-953. ; Lena Z. Evins, Keld A. Jensen, Rodney C. Ewing, Uraninite recrystallization and Pb loss in the Oklo and Bangombé natural fission reactors, Gabon, Geochimica et Cosmochimica Acta, Volume 69, Issue 6, 15 March 2005, Pages 1589-1606, ISSN 0016-7037, 10.1016/j.gca.2004.07.013.; Janusz Janeczek (1999) Mineralogy and geochemistry of natural fission reactors in Gabon. Reviews in Mineralogy and Geochemistry, MSA, v. 38, p. 321-392
Goethite
Formula: α-Fe3+O(OH)
Reference: Janusz Janeczek (1999) Mineralogy and geochemistry of natural fission reactors in Gabon. Reviews in Mineralogy and Geochemistry, MSA, v. 38, p. 321-392
Hematite
Formula: Fe2O3
Reference: Douglas G. Brookins (1982) Migration and retention of elements at the Oklo natural reactor. Environmental Geology Volume 4, Issue 3-4 , pp 201-208; Janusz Janeczek (1999) Mineralogy and geochemistry of natural fission reactors in Gabon. Reviews in Mineralogy and Geochemistry, MSA, v. 38, p. 321-392
Ilmenite
Formula: Fe2+TiO3
Reference: Lena Z. Evins, Keld A. Jensen, Rodney C. Ewing, Uraninite recrystallization and Pb loss in the Oklo and Bangombé natural fission reactors, Gabon, Geochimica et Cosmochimica Acta, Volume 69, Issue 6, 15 March 2005, Pages 1589-1606, ISSN 0016-7037, 10.1016/j.gca.2004.07.013.
Karelianite
Formula: V3+2O3
Kasolite
Formula: Pb(UO2)[SiO4] · H2O
Lead
Formula: Pb
Reference: Janusz Janeczek (1999) Mineralogy and geochemistry of natural fission reactors in Gabon. Reviews in Mineralogy and Geochemistry, MSA, v. 38, p. 321-392
Metavanuralite
Formula: Al(UO2)2(VO4)2(OH) · 8H2O
Minium
Formula: Pb3O4
Reference: Janusz Janeczek (1999) Mineralogy and geochemistry of natural fission reactors in Gabon. Reviews in Mineralogy and Geochemistry, MSA, v. 38, p. 321-392
Molybdenite
Formula: MoS2
Reference: Janusz Janeczek (1999) Mineralogy and geochemistry of natural fission reactors in Gabon. Reviews in Mineralogy and Geochemistry, MSA, v. 38, p. 321-392
Montroseite
Formula: (V3+,Fe3+)O(OH)
Muscovite
Formula: KAl2(AlSi3O10)(OH)2
Reference: Econ Geol (1989) 84:2286-2295; H. Isobe, T. Ohnuki, T. Murakami and F. Gauthier-Lafaye (1994). Uranium Redistribution Under Oxidizing Conditions in Oklo Natural Reactor Zone 2, Gabon. MRS Proceedings, 353, 1211 doi:10.1557/PROC-353-1211. ; Douglas G. Brookins (1982) Migration and retention of elements at the Oklo natural reactor. Environmental Geology Volume 4, Issue 3-4 , pp 201-208; Janusz Janeczek (1999) Mineralogy and geochemistry of natural fission reactors in Gabon. Reviews in Mineralogy and Geochemistry, MSA, v. 38, p. 321-392
Muscovite var: Illite
Formula: K0.65Al2.0[Al0.65Si3.35O10](OH)2
Reference: Econ Geol (1989) 84:2286-2295; H. Isobe, T. Ohnuki, T. Murakami and F. Gauthier-Lafaye (1994). Uranium Redistribution Under Oxidizing Conditions in Oklo Natural Reactor Zone 2, Gabon. MRS Proceedings, 353, 1211 doi:10.1557/PROC-353-1211. ; Douglas G. Brookins (1982) Migration and retention of elements at the Oklo natural reactor. Environmental Geology Volume 4, Issue 3-4 , pp 201-208; Janusz Janeczek (1999) Mineralogy and geochemistry of natural fission reactors in Gabon. Reviews in Mineralogy and Geochemistry, MSA, v. 38, p. 321-392
Nolanite
Formula: (V3+,Fe3+,Fe2+,Ti)10O14(OH)2
Pyrite
Formula: FeS2
Reference: H. Isobe, T. Ohnuki, T. Murakami and F. Gauthier-Lafaye (1994). Uranium Redistribution Under Oxidizing Conditions in Oklo Natural Reactor Zone 2, Gabon. MRS Proceedings, 353, 1211 doi:10.1557/PROC-353-1211. ; Douglas G. Brookins (1982) Migration and retention of elements at the Oklo natural reactor. Environmental Geology Volume 4, Issue 3-4 , pp 201-208; Janusz Janeczek (1999) Mineralogy and geochemistry of natural fission reactors in Gabon. Reviews in Mineralogy and Geochemistry, MSA, v. 38, p. 321-392
Quartz
Formula: SiO2
Reference: Econ Geol (1989) 84:2286-2295; Lena Z. Evins, Keld A. Jensen, Rodney C. Ewing, Uraninite recrystallization and Pb loss in the Oklo and Bangombé natural fission reactors, Gabon, Geochimica et Cosmochimica Acta, Volume 69, Issue 6, 15 March 2005, Pages 1589-1606, ISSN 0016-7037, 10.1016/j.gca.2004.07.013.; Douglas G. Brookins (1982) Migration and retention of elements at the Oklo natural reactor. Environmental Geology Volume 4, Issue 3-4 , pp 201-208; Janusz Janeczek (1999) Mineralogy and geochemistry of natural fission reactors in Gabon. Reviews in Mineralogy and Geochemistry, MSA, v. 38, p. 321-392
Roscoelite
Formula: K(V3+,Al)2(AlSi3O10)(OH)2
Rutherfordine
Formula: (UO2)CO3
Reference: Janusz Janeczek (1999) Mineralogy and geochemistry of natural fission reactors in Gabon. Reviews in Mineralogy and Geochemistry, MSA, v. 38, p. 321-392
Sphalerite
Formula: ZnS
Reference: Janusz Janeczek (1999) Mineralogy and geochemistry of natural fission reactors in Gabon. Reviews in Mineralogy and Geochemistry, MSA, v. 38, p. 321-392
Sudoite
Formula: Mg2Al3(Si3Al)O10)(OH)8
Reference: Dymkov, Y., Holliger, P., Pagel, M., Gorshkov, A., and Artyukhina, A. (1997): Mineralium Deposita 32, 617-620.
Titanite
Formula: CaTi(SiO4)O
Reference: Lena Z. Evins, Keld A. Jensen, Rodney C. Ewing, Uraninite recrystallization and Pb loss in the Oklo and Bangombé natural fission reactors, Gabon, Geochimica et Cosmochimica Acta, Volume 69, Issue 6, 15 March 2005, Pages 1589-1606, ISSN 0016-7037, 10.1016/j.gca.2004.07.013.
Torbernite
Formula: Cu(UO2)2(PO4)2 · 12H2O
Reference: Janusz Janeczek (1999) Mineralogy and geochemistry of natural fission reactors in Gabon. Reviews in Mineralogy and Geochemistry, MSA, v. 38, p. 321-392
Uraninite
Formula: UO2
Reference: Dymkov, Y., Holliger, P., Pagel, M., Gorshkov, A., and Artyukhina A. (1997): Characterization of a La-Ce-Sr-Ca aluminous hydroxy phosphate in nuclear zone 13 in the Oklo uranium deposit (Gabon). Mineralium Deposita, 32, 617-620.; Econ Geol (1989) 84:2286-2295; Lena Z. Evins, Keld A. Jensen, Rodney C. Ewing, Uraninite recrystallization and Pb loss in the Oklo and Bangombé natural fission reactors, Gabon, Geochimica et Cosmochimica Acta, Volume 69, Issue 6, 15 March 2005, Pages 1589-1606, ISSN 0016-7037, 10.1016/j.gca.2004.07.013.; Janusz Janeczek (1999) Mineralogy and geochemistry of natural fission reactors in Gabon. Reviews in Mineralogy and Geochemistry, MSA, v. 38, p. 321-392
Uraninite var: Pitchblende
Formula: UO2
Reference: Econ Geol (1989) 84:2286-2295; Douglas G. Brookins (1982) Migration and retention of elements at the Oklo natural reactor. Environmental Geology Volume 4, Issue 3-4 , pp 201-208; Janusz Janeczek (1999) Mineralogy and geochemistry of natural fission reactors in Gabon. Reviews in Mineralogy and Geochemistry, MSA, v. 38, p. 321-392
Uranophane
Formula: Ca(UO2)2(SiO3OH)2 · 5H2O
Reference: Janusz Janeczek (1999) Mineralogy and geochemistry of natural fission reactors in Gabon. Reviews in Mineralogy and Geochemistry, MSA, v. 38, p. 321-392
Vanuralite
Formula: Al(UO2)2(V2O8)(OH) · 11H2O
Wölsendorfite
Formula: Pb7(UO2)14O19(OH)4 · 12H2O
Reference: Janusz Janeczek (1999) Mineralogy and geochemistry of natural fission reactors in Gabon. Reviews in Mineralogy and Geochemistry, MSA, v. 38, p. 321-392
Wulfenite
Formula: Pb(MoO4)
Zircon
Formula: Zr(SiO4)
Reference: Janusz Janeczek (1999) Mineralogy and geochemistry of natural fission reactors in Gabon. Reviews in Mineralogy and Geochemistry, MSA, v. 38, p. 321-392

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
'Copper'1.AA.05Cu
Lead1.AA.05Pb
Group 2 - Sulphides and Sulfosalts
'Bornite'2.BA.15Cu5FeS4
'Chalcopyrite'2.CB.10aCuFeS2
'Covellite'2.CA.05aCuS
'Digenite'2.BA.10Cu9S5
'Galena'2.CD.10PbS
Molybdenite2.EA.30MoS2
Pyrite2.EB.05aFeS2
Sphalerite2.CB.05aZnS
Group 4 - Oxides and Hydroxides
'Curienite'4.HB.15Pb(UO2)2(VO4)2 · 5H2O
'Duttonite'4.HE.35V4+O(OH)2
'Fourmarierite'4.GB.25Pb(UO2)4O3(OH)4 · 4H2O
'Francevillite'4.HB.15Ba(UO2)2(VO4)2 · 5H2O
'Goethite'4.00.α-Fe3+O(OH)
'Hematite'4.CB.05Fe2O3
Ilmenite4.CB.05Fe2+TiO3
Karelianite4.CB.05V3+2O3
Metavanuralite4.HB.20Al(UO2)2(VO4)2(OH) · 8H2O
Minium4.BD.05Pb3O4
Montroseite4.FD.10(V3+,Fe3+)O(OH)
Nolanite4.CB.40(V3+,Fe3+,Fe2+,Ti)10O14(OH)2
Quartz4.DA.05SiO2
Uraninite4.DL.05UO2
var: Pitchblende4.DL.05UO2
Vanuralite4.HB.20Al(UO2)2(V2O8)(OH) · 11H2O
Wölsendorfite4.GB.30Pb7(UO2)14O19(OH)4 · 12H2O
Group 5 - Nitrates and Carbonates
'Calcite'5.AB.05CaCO3
Rutherfordine5.EB.05(UO2)CO3
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
'Baryte'7.AD.35BaSO4
Wulfenite7.GA.05Pb(MoO4)
Group 8 - Phosphates, Arsenates and Vanadates
'Bassetite'8.EB.10Fe2+(UO2)2(PO4)2 · 10H2O
'Chervetite'8.FA.15Pb2(V2O7)
'Dewindtite'8.EC.10H2Pb3(UO2)2(PO4)4O4 · 12H2O
'Fluorapatite'8.BN.05Ca5(PO4)3F
Torbernite8.EB.05Cu(UO2)2(PO4)2 · 12H2O
Group 9 - Silicates
'Coffinite'9.AD.30U(SiO4) · nH2O
Kasolite9.AK.15Pb(UO2)[SiO4] · H2O
Muscovite9.EC.15KAl2(AlSi3O10)(OH)2
var: Illite9.EC.15K0.65Al2.0[Al0.65Si3.35O10](OH)2
Roscoelite9.EC.15K(V3+,Al)2(AlSi3O10)(OH)2
Sudoite9.EC.55Mg2Al3(Si3Al)O10)(OH)8
Titanite9.AG.15CaTi(SiO4)O
Uranophane9.AK.15Ca(UO2)2(SiO3OH)2 · 5H2O
Zircon9.AD.30Zr(SiO4)
Unclassified Minerals, Rocks, etc.
'Albite-Anorthite Series'-
'Chlorite Group'-

List of minerals arranged by Dana 8th Edition classification

Group 1 - NATIVE ELEMENTS AND ALLOYS
Metals, other than the Platinum Group
Copper1.1.1.3Cu
Lead1.1.1.4Pb
Group 2 - SULFIDES
AmBnXp, with (m+n):p = 2:1
Digenite2.4.7.3Cu9S5
AmBnXp, with (m+n):p = 3:2
Bornite2.5.2.1Cu5FeS4
AmXp, with m:p = 1:1
Covellite2.8.12.1CuS
Galena2.8.1.1PbS
Sphalerite2.8.2.1ZnS
AmBnXp, with (m+n):p = 1:1
Chalcopyrite2.9.1.1CuFeS2
AmBnXp, with (m+n):p = 1:2
Molybdenite2.12.10.1MoS2
Pyrite2.12.1.1FeS2
Group 4 - SIMPLE OXIDES
A2X3
Hematite4.3.1.2Fe2O3
Ilmenite4.3.5.1Fe2+TiO3
Karelianite4.3.1.4V3+2O3
Miscellaneous
Nolanite4.6.7.1(V3+,Fe3+,Fe2+,Ti)10O14(OH)2
Group 5 - OXIDES CONTAINING URANIUM OR THORIUM
AXO2·xH2O
Uraninite5.1.1.1UO2
AX2O7·xH2O
Wölsendorfite5.4.3.2Pb7(UO2)14O19(OH)4 · 12H2O
Miscellaneous
Fourmarierite5.9.2.1Pb(UO2)4O3(OH)4 · 4H2O
Group 6 - HYDROXIDES AND OXIDES CONTAINING HYDROXYL
XO(OH)
Goethite6.1.1.2α-Fe3+O(OH)
Montroseite6.1.1.4(V3+,Fe3+)O(OH)
X(OH)2
Duttonite6.2.7.1V4+O(OH)2
Group 7 - MULTIPLE OXIDES
AB2X4
Minium7.2.8.1Pb3O4
Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Calcite14.1.1.1CaCO3
Rutherfordine14.1.4.1(UO2)CO3
Group 28 - ANHYDROUS ACID AND NORMAL SULFATES
AXO4
Baryte28.3.1.1BaSO4
Group 38 - ANHYDROUS NORMAL PHOSPHATES, ARSENATES, AND VANADATES
Miscellaneous
Chervetite38.5.5.1Pb2(V2O7)
Group 40 - HYDRATED NORMAL PHOSPHATES,ARSENATES AND VANADATES
AB2(XO4)2·xH2O, containing (UO2)2+
Bassetite40.2a.16.1Fe2+(UO2)2(PO4)2 · 10H2O
Curienite40.2a.27.2Pb(UO2)2(VO4)2 · 5H2O
Francevillite40.2a.27.1Ba(UO2)2(VO4)2 · 5H2O
Torbernite40.2a.13.1Cu(UO2)2(PO4)2 · 12H2O
Group 41 - ANHYDROUS PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
A5(XO4)3Zq
Fluorapatite41.8.1.1Ca5(PO4)3F
Group 42 - HYDRATED PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
(AB)7(XO4)4Zq·xH2O
Dewindtite42.9.8.1H2Pb3(UO2)2(PO4)4O4 · 12H2O
(AB)3(XO4)2Zq·xH2O
Metavanuralite42.11.13.2Al(UO2)2(VO4)2(OH) · 8H2O
Vanuralite42.11.13.1Al(UO2)2(V2O8)(OH) · 11H2O
Group 48 - ANHYDROUS MOLYBDATES AND TUNGSTATES
AXO4
Wulfenite48.1.3.1Pb(MoO4)
Group 51 - NESOSILICATES Insular SiO4 Groups Only
Insular SiO4 Groups Only with cations in >[6] coordination
Coffinite51.5.2.4U(SiO4) · nH2O
Zircon51.5.2.1Zr(SiO4)
Group 52 - NESOSILICATES Insular SiO4 Groups and O,OH,F,H2O
Insular SiO4 Groups and O, OH, F, and H2O with cations in [6] and/or >[6] coordination
Titanite52.4.3.1CaTi(SiO4)O
Group 53 - NESOSILICATES Insular SiO4 Groups and Other Anions or Complex Cations
Insular SiO4 Groups and Other Anions of Complex Cations with (UO2)
Kasolite53.3.1.1Pb(UO2)[SiO4] · H2O
Uranophane53.3.1.2Ca(UO2)2(SiO3OH)2 · 5H2O
Group 71 - PHYLLOSILICATES Sheets of Six-Membered Rings
Sheets of 6-membered rings with 2:1 layers
Muscovite71.2.2a.1KAl2(AlSi3O10)(OH)2
var: Illite71.2.2d.2K0.65Al2.0[Al0.65Si3.35O10](OH)2
Roscoelite71.2.2a.4K(V3+,Al)2(AlSi3O10)(OH)2
Sheets of 6-membered rings interlayered 1:1, 2:1, and octahedra
Sudoite71.4.1.3Mg2Al3(Si3Al)O10)(OH)8
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Unclassified Minerals, Rocks, etc.
'Albite-Anorthite Series'-
'Chlorite Group'-
Uraninite
var: Pitchblende
-UO2

List of minerals for each chemical element

HHydrogen
H BassetiteFe2+(UO2)2(PO4)2 · 10H2O
H CoffiniteU(SiO4) · nH2O
H CurienitePb(UO2)2(VO4)2 · 5H2O
H DewindtiteH2Pb3(UO2)2(PO4)4O4 · 12H2O
H DuttoniteV4+O(OH)2
H FourmarieritePb(UO2)4O3(OH)4 · 4H2O
H FrancevilliteBa(UO2)2(VO4)2 · 5H2O
H Goethiteα-Fe3+O(OH)
H Muscovite (var: Illite)K0.65Al2.0[Al0.65Si3.35O10](OH)2
H KasolitePb(UO2)[SiO4] · H2O
H MetavanuraliteAl(UO2)2(VO4)2(OH) · 8H2O
H Montroseite(V3+,Fe3+)O(OH)
H MuscoviteKAl2(AlSi3O10)(OH)2
H Nolanite(V3+,Fe3+,Fe2+,Ti)10O14(OH)2
H RoscoeliteK(V3+,Al)2(AlSi3O10)(OH)2
H SudoiteMg2Al3(Si3Al)O10)(OH)8
H TorberniteCu(UO2)2(PO4)2 · 12H2O
H UranophaneCa(UO2)2(SiO3OH)2 · 5H2O
H VanuraliteAl(UO2)2(V2O8)(OH) · 11H2O
H WölsendorfitePb7(UO2)14O19(OH)4 · 12H2O
CCarbon
C CalciteCaCO3
C Rutherfordine(UO2)CO3
OOxygen
O BaryteBaSO4
O BassetiteFe2+(UO2)2(PO4)2 · 10H2O
O CalciteCaCO3
O ChervetitePb2(V2O7)
O CoffiniteU(SiO4) · nH2O
O CurienitePb(UO2)2(VO4)2 · 5H2O
O DewindtiteH2Pb3(UO2)2(PO4)4O4 · 12H2O
O DuttoniteV4+O(OH)2
O FluorapatiteCa5(PO4)3F
O FourmarieritePb(UO2)4O3(OH)4 · 4H2O
O FrancevilliteBa(UO2)2(VO4)2 · 5H2O
O Goethiteα-Fe3+O(OH)
O HematiteFe2O3
O Muscovite (var: Illite)K0.65Al2.0[Al0.65Si3.35O10](OH)2
O IlmeniteFe2+TiO3
O KarelianiteV23+O3
O KasolitePb(UO2)[SiO4] · H2O
O MetavanuraliteAl(UO2)2(VO4)2(OH) · 8H2O
O MiniumPb3O4
O Montroseite(V3+,Fe3+)O(OH)
O MuscoviteKAl2(AlSi3O10)(OH)2
O Nolanite(V3+,Fe3+,Fe2+,Ti)10O14(OH)2
O Uraninite (var: Pitchblende)UO2
O QuartzSiO2
O RoscoeliteK(V3+,Al)2(AlSi3O10)(OH)2
O Rutherfordine(UO2)CO3
O SudoiteMg2Al3(Si3Al)O10)(OH)8
O TitaniteCaTi(SiO4)O
O TorberniteCu(UO2)2(PO4)2 · 12H2O
O UraniniteUO2
O UranophaneCa(UO2)2(SiO3OH)2 · 5H2O
O VanuraliteAl(UO2)2(V2O8)(OH) · 11H2O
O WölsendorfitePb7(UO2)14O19(OH)4 · 12H2O
O WulfenitePb(MoO4)
O ZirconZr(SiO4)
FFluorine
F FluorapatiteCa5(PO4)3F
MgMagnesium
Mg SudoiteMg2Al3(Si3Al)O10)(OH)8
AlAluminium
Al Muscovite (var: Illite)K0.65Al2.0[Al0.65Si3.35O10](OH)2
Al MetavanuraliteAl(UO2)2(VO4)2(OH) · 8H2O
Al MuscoviteKAl2(AlSi3O10)(OH)2
Al RoscoeliteK(V3+,Al)2(AlSi3O10)(OH)2
Al SudoiteMg2Al3(Si3Al)O10)(OH)8
Al VanuraliteAl(UO2)2(V2O8)(OH) · 11H2O
SiSilicon
Si CoffiniteU(SiO4) · nH2O
Si Muscovite (var: Illite)K0.65Al2.0[Al0.65Si3.35O10](OH)2
Si KasolitePb(UO2)[SiO4] · H2O
Si MuscoviteKAl2(AlSi3O10)(OH)2
Si QuartzSiO2
Si RoscoeliteK(V3+,Al)2(AlSi3O10)(OH)2
Si SudoiteMg2Al3(Si3Al)O10)(OH)8
Si TitaniteCaTi(SiO4)O
Si UranophaneCa(UO2)2(SiO3OH)2 · 5H2O
Si ZirconZr(SiO4)
PPhosphorus
P BassetiteFe2+(UO2)2(PO4)2 · 10H2O
P DewindtiteH2Pb3(UO2)2(PO4)4O4 · 12H2O
P FluorapatiteCa5(PO4)3F
P TorberniteCu(UO2)2(PO4)2 · 12H2O
SSulfur
S BaryteBaSO4
S BorniteCu5FeS4
S ChalcopyriteCuFeS2
S CovelliteCuS
S DigeniteCu9S5
S GalenaPbS
S MolybdeniteMoS2
S PyriteFeS2
S SphaleriteZnS
KPotassium
K Muscovite (var: Illite)K0.65Al2.0[Al0.65Si3.35O10](OH)2
K MuscoviteKAl2(AlSi3O10)(OH)2
K RoscoeliteK(V3+,Al)2(AlSi3O10)(OH)2
CaCalcium
Ca CalciteCaCO3
Ca FluorapatiteCa5(PO4)3F
Ca TitaniteCaTi(SiO4)O
Ca UranophaneCa(UO2)2(SiO3OH)2 · 5H2O
TiTitanium
Ti IlmeniteFe2+TiO3
Ti Nolanite(V3+,Fe3+,Fe2+,Ti)10O14(OH)2
Ti TitaniteCaTi(SiO4)O
VVanadium
V ChervetitePb2(V2O7)
V CurienitePb(UO2)2(VO4)2 · 5H2O
V DuttoniteV4+O(OH)2
V FrancevilliteBa(UO2)2(VO4)2 · 5H2O
V KarelianiteV23+O3
V MetavanuraliteAl(UO2)2(VO4)2(OH) · 8H2O
V Montroseite(V3+,Fe3+)O(OH)
V Nolanite(V3+,Fe3+,Fe2+,Ti)10O14(OH)2
V RoscoeliteK(V3+,Al)2(AlSi3O10)(OH)2
V VanuraliteAl(UO2)2(V2O8)(OH) · 11H2O
FeIron
Fe BassetiteFe2+(UO2)2(PO4)2 · 10H2O
Fe BorniteCu5FeS4
Fe ChalcopyriteCuFeS2
Fe Goethiteα-Fe3+O(OH)
Fe HematiteFe2O3
Fe IlmeniteFe2+TiO3
Fe Montroseite(V3+,Fe3+)O(OH)
Fe Nolanite(V3+,Fe3+,Fe2+,Ti)10O14(OH)2
Fe PyriteFeS2
CuCopper
Cu BorniteCu5FeS4
Cu ChalcopyriteCuFeS2
Cu CopperCu
Cu CovelliteCuS
Cu DigeniteCu9S5
Cu TorberniteCu(UO2)2(PO4)2 · 12H2O
ZnZinc
Zn SphaleriteZnS
ZrZirconium
Zr ZirconZr(SiO4)
MoMolybdenum
Mo MolybdeniteMoS2
Mo WulfenitePb(MoO4)
BaBarium
Ba BaryteBaSO4
Ba FrancevilliteBa(UO2)2(VO4)2 · 5H2O
PbLead
Pb ChervetitePb2(V2O7)
Pb CurienitePb(UO2)2(VO4)2 · 5H2O
Pb DewindtiteH2Pb3(UO2)2(PO4)4O4 · 12H2O
Pb FourmarieritePb(UO2)4O3(OH)4 · 4H2O
Pb GalenaPbS
Pb KasolitePb(UO2)[SiO4] · H2O
Pb LeadPb
Pb MiniumPb3O4
Pb WölsendorfitePb7(UO2)14O19(OH)4 · 12H2O
Pb WulfenitePb(MoO4)
UUranium
U BassetiteFe2+(UO2)2(PO4)2 · 10H2O
U CoffiniteU(SiO4) · nH2O
U CurienitePb(UO2)2(VO4)2 · 5H2O
U DewindtiteH2Pb3(UO2)2(PO4)4O4 · 12H2O
U FourmarieritePb(UO2)4O3(OH)4 · 4H2O
U FrancevilliteBa(UO2)2(VO4)2 · 5H2O
U KasolitePb(UO2)[SiO4] · H2O
U MetavanuraliteAl(UO2)2(VO4)2(OH) · 8H2O
U Uraninite (var: Pitchblende)UO2
U Rutherfordine(UO2)CO3
U TorberniteCu(UO2)2(PO4)2 · 12H2O
U UraniniteUO2
U UranophaneCa(UO2)2(SiO3OH)2 · 5H2O
U VanuraliteAl(UO2)2(V2O8)(OH) · 11H2O
U WölsendorfitePb7(UO2)14O19(OH)4 · 12H2O

Regional Geology

This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.

Click on geological units on the map for more information. Click here to view full-screen map on Macrostrat.org

Paleoproterozoic
1600 - 2500 Ma



ID: 3187849
Paleoproterozoic sedimentary rocks

Age: Proterozoic (1600 - 2500 Ma)

Lithology: Sedimentary rocks

Reference: Chorlton, L.B. Generalized geology of the world: bedrock domains and major faults in GIS format: a small-scale world geology map with an extended geological attribute database. doi: 10.4095/223767. Geological Survey of Canada, Open File 5529. [154]

Rhyacian
2050 - 2300 Ma



ID: 3310214

Age: Rhyacian (2050 - 2300 Ma)

Lithology: Sedimentary and volcaniclastic

Reference: Thiéblemont, D. (ed.). New edition of the 1:10,000,000 geological map of Africa. CGMW-BRGM. [190]

Data and map coding provided by Macrostrat.org, used under Creative Commons Attribution 4.0 License

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
- Econ Geol 84 (1989) 2286-2295.
- Radiochimica Acta 66/67 (1994) 455-461.
- Dymkov, Y., Holliger, P., Pagel, M., Gorshkov, A., and Artyukhina, A. (1997): Characterization of a La-Ce-Sr-Ca aluminous hydroxy phosphate in nuclear zone 13 in the Oklo uranium deposit (Gabon). Mineralium Deposita 32, 617-620.
- Janeczek, J. (1999): Mineralogy and geochemistry of natural fission reactors in Gabon. Reviews in Mineralogy and Geochemistry, 38, 321-392.
- Meshik, A. P. (November 2005): "The Workings of an Ancient Nuclear Reactor". Scientific American
- Hidaka, H. (2007): Geochemical characteristics of an ancient nuclear reactor "Oklo". Journal of Nuclear and Radiochemical Sciences 8, 99-103.

External Links



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