Bou Naga complex, Trarza Region, Mauritaniai
Regional Level Types | |
---|---|
Bou Naga complex | Complex |
Trarza Region | Region |
Mauritania | Country |
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Latitude & Longitude (WGS84):
18° 58' 59'' North , 13° 19' 0'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Mindat Locality ID:
227742
Long-form identifier:
mindat:1:2:227742:7
GUID (UUID V4):
b66ba9d4-ef6f-4b22-9739-b3bbb3958d90
The Bou Naga alkaline complex is Mauritania’s biggest deposit of yttrium, thorium, rare earths, baryte, and fluorite. The multiphase, sub-circular ring complex has a diameter of approximately 12 km. The central part, belonging to the Bou Naga suite, consists of syenite, quartz syenite, alkaline granite, monzosyenite and phonolite. The outer parts are dominated by rhyolite, rhyodacite and trachyte belonging to the Oued Tidoumaline formation.
Between 1967 and 1968, French company Péchiney mined some 1,200 t of yttrium and thorium bearing concentrates from high grade, xenotime bearing quartz veins from the western part of the prospect. The northern part of the prospect, the so-called Guelb Zellaga, is dominated by mainly bastnäsite-(Ce) bearing quartz-hematite-carbonate-fluorite veins in syenite.
The salt flat, a so-called sebkha or sabkha, between the two prospects is periodically flooded. The annual amount of precipitation is extremely low, often there is no rainfall at all for years. The water in the sebkha is extremely salty and contains also dissolved sulphates.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsDetailed Mineral List:
ⓘ Ankerite Formula: Ca(Fe2+,Mg)(CO3)2 References: |
ⓘ 'Apatite' Formula: Ca5(PO4)3(Cl/F/OH) |
ⓘ Baryte Formula: BaSO4 |
ⓘ 'Bastnäsite' Formula: (Ce/Nd/Y/REE)(CO3)F |
ⓘ Bastnäsite-(Ce) Formula: Ce(CO3)F References: |
ⓘ Cryptomelane Formula: K(Mn4+7Mn3+)O16 References: |
ⓘ Epidote Formula: (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) References: |
ⓘ Fluorite Formula: CaF2 |
ⓘ Goethite Formula: α-Fe3+O(OH) References: |
ⓘ Hematite Formula: Fe2O3 References: |
ⓘ Magnetite Formula: Fe2+Fe3+2O4 References: |
ⓘ Malachite Formula: Cu2(CO3)(OH)2 References: |
ⓘ 'Monazite' Formula: REE(PO4) |
ⓘ Parisite-(Ce) Formula: CaCe2(CO3)3F2 References: |
ⓘ Pyrite Formula: FeS2 References: |
ⓘ Quartz Formula: SiO2 References: |
ⓘ Riebeckite Formula: ◻[Na2][Fe2+3Fe3+2]Si8O22(OH)2 References: |
ⓘ Rutile Formula: TiO2 References: |
ⓘ Rutile var. Ilmenorutile Formula: (Ti,Nb)O2 References: |
ⓘ Siderite Formula: FeCO3 References: |
ⓘ Thorite Formula: Th(SiO4) References: |
ⓘ Thorite var. Uranothorite Formula: (Th,U)SiO4 References: |
ⓘ Xenotime-(Y) Formula: Y(PO4) References: |
ⓘ Zircon Formula: Zr(SiO4) References: |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
Group 2 - Sulphides and Sulfosalts | |||
---|---|---|---|
ⓘ | Pyrite | 2.EB.05a | FeS2 |
Group 3 - Halides | |||
ⓘ | Fluorite | 3.AB.25 | CaF2 |
Group 4 - Oxides and Hydroxides | |||
ⓘ | Goethite | 4.00. | α-Fe3+O(OH) |
ⓘ | Magnetite | 4.BB.05 | Fe2+Fe3+2O4 |
ⓘ | Hematite | 4.CB.05 | Fe2O3 |
ⓘ | Quartz | 4.DA.05 | SiO2 |
ⓘ | Rutile | 4.DB.05 | TiO2 |
ⓘ | var. Ilmenorutile | 4.DB.05 | (Ti,Nb)O2 |
ⓘ | Cryptomelane | 4.DK.05a | K(Mn4+7Mn3+)O16 |
Group 5 - Nitrates and Carbonates | |||
ⓘ | Siderite | 5.AB.05 | FeCO3 |
ⓘ | Ankerite | 5.AB.10 | Ca(Fe2+,Mg)(CO3)2 |
ⓘ | Malachite | 5.BA.10 | Cu2(CO3)(OH)2 |
ⓘ | Bastnäsite-(Ce) | 5.BD.20a | Ce(CO3)F |
ⓘ | Parisite-(Ce) | 5.BD.20b | CaCe2(CO3)3F2 |
Group 7 - Sulphates, Chromates, Molybdates and Tungstates | |||
ⓘ | Baryte | 7.AD.35 | BaSO4 |
Group 8 - Phosphates, Arsenates and Vanadates | |||
ⓘ | Xenotime-(Y) | 8.AD.35 | Y(PO4) |
Group 9 - Silicates | |||
ⓘ | Zircon | 9.AD.30 | Zr(SiO4) |
ⓘ | Thorite var. Uranothorite | 9.AD.30 | (Th,U)SiO4 |
ⓘ | 9.AD.30 | Th(SiO4) | |
ⓘ | Epidote | 9.BG.05a | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
ⓘ | Riebeckite | 9.DE.25 | ◻[Na2][Fe2+3Fe3+2]Si8O22(OH)2 |
Unclassified | |||
ⓘ | 'Monazite' | - | REE(PO4) |
ⓘ | 'Bastnäsite' | - | (Ce/Nd/Y/REE)(CO3)F |
ⓘ | 'Apatite' | - | Ca5(PO4)3(Cl/F/OH) |
List of minerals for each chemical element
H | Hydrogen | |
---|---|---|
H | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
H | ⓘ Goethite | α-Fe3+O(OH) |
H | ⓘ Malachite | Cu2(CO3)(OH)2 |
H | ⓘ Riebeckite | ◻[Na2][Fe32+Fe23+]Si8O22(OH)2 |
H | ⓘ Apatite | Ca5(PO4)3(Cl/F/OH) |
C | Carbon | |
C | ⓘ Ankerite | Ca(Fe2+,Mg)(CO3)2 |
C | ⓘ Bastnäsite-(Ce) | Ce(CO3)F |
C | ⓘ Bastnäsite | (Ce/Nd/Y/REE)(CO3)F |
C | ⓘ Malachite | Cu2(CO3)(OH)2 |
C | ⓘ Parisite-(Ce) | CaCe2(CO3)3F2 |
C | ⓘ Siderite | FeCO3 |
O | Oxygen | |
O | ⓘ Ankerite | Ca(Fe2+,Mg)(CO3)2 |
O | ⓘ Baryte | BaSO4 |
O | ⓘ Bastnäsite-(Ce) | Ce(CO3)F |
O | ⓘ Bastnäsite | (Ce/Nd/Y/REE)(CO3)F |
O | ⓘ Cryptomelane | K(Mn74+Mn3+)O16 |
O | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
O | ⓘ Goethite | α-Fe3+O(OH) |
O | ⓘ Hematite | Fe2O3 |
O | ⓘ Rutile var. Ilmenorutile | (Ti,Nb)O2 |
O | ⓘ Magnetite | Fe2+Fe23+O4 |
O | ⓘ Malachite | Cu2(CO3)(OH)2 |
O | ⓘ Monazite | REE(PO4) |
O | ⓘ Parisite-(Ce) | CaCe2(CO3)3F2 |
O | ⓘ Quartz | SiO2 |
O | ⓘ Riebeckite | ◻[Na2][Fe32+Fe23+]Si8O22(OH)2 |
O | ⓘ Rutile | TiO2 |
O | ⓘ Siderite | FeCO3 |
O | ⓘ Thorite | Th(SiO4) |
O | ⓘ Xenotime-(Y) | Y(PO4) |
O | ⓘ Zircon | Zr(SiO4) |
O | ⓘ Thorite var. Uranothorite | (Th,U)SiO4 |
O | ⓘ Apatite | Ca5(PO4)3(Cl/F/OH) |
F | Fluorine | |
F | ⓘ Bastnäsite-(Ce) | Ce(CO3)F |
F | ⓘ Bastnäsite | (Ce/Nd/Y/REE)(CO3)F |
F | ⓘ Fluorite | CaF2 |
F | ⓘ Parisite-(Ce) | CaCe2(CO3)3F2 |
F | ⓘ Apatite | Ca5(PO4)3(Cl/F/OH) |
Na | Sodium | |
Na | ⓘ Riebeckite | ◻[Na2][Fe32+Fe23+]Si8O22(OH)2 |
Mg | Magnesium | |
Mg | ⓘ Ankerite | Ca(Fe2+,Mg)(CO3)2 |
Al | Aluminium | |
Al | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
Si | Silicon | |
Si | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
Si | ⓘ Quartz | SiO2 |
Si | ⓘ Riebeckite | ◻[Na2][Fe32+Fe23+]Si8O22(OH)2 |
Si | ⓘ Thorite | Th(SiO4) |
Si | ⓘ Zircon | Zr(SiO4) |
Si | ⓘ Thorite var. Uranothorite | (Th,U)SiO4 |
P | Phosphorus | |
P | ⓘ Monazite | REE(PO4) |
P | ⓘ Xenotime-(Y) | Y(PO4) |
P | ⓘ Apatite | Ca5(PO4)3(Cl/F/OH) |
S | Sulfur | |
S | ⓘ Baryte | BaSO4 |
S | ⓘ Pyrite | FeS2 |
Cl | Chlorine | |
Cl | ⓘ Apatite | Ca5(PO4)3(Cl/F/OH) |
K | Potassium | |
K | ⓘ Cryptomelane | K(Mn74+Mn3+)O16 |
Ca | Calcium | |
Ca | ⓘ Ankerite | Ca(Fe2+,Mg)(CO3)2 |
Ca | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
Ca | ⓘ Fluorite | CaF2 |
Ca | ⓘ Parisite-(Ce) | CaCe2(CO3)3F2 |
Ca | ⓘ Apatite | Ca5(PO4)3(Cl/F/OH) |
Ti | Titanium | |
Ti | ⓘ Rutile var. Ilmenorutile | (Ti,Nb)O2 |
Ti | ⓘ Rutile | TiO2 |
Mn | Manganese | |
Mn | ⓘ Cryptomelane | K(Mn74+Mn3+)O16 |
Fe | Iron | |
Fe | ⓘ Ankerite | Ca(Fe2+,Mg)(CO3)2 |
Fe | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
Fe | ⓘ Goethite | α-Fe3+O(OH) |
Fe | ⓘ Hematite | Fe2O3 |
Fe | ⓘ Magnetite | Fe2+Fe23+O4 |
Fe | ⓘ Pyrite | FeS2 |
Fe | ⓘ Riebeckite | ◻[Na2][Fe32+Fe23+]Si8O22(OH)2 |
Fe | ⓘ Siderite | FeCO3 |
Cu | Copper | |
Cu | ⓘ Malachite | Cu2(CO3)(OH)2 |
Y | Yttrium | |
Y | ⓘ Bastnäsite | (Ce/Nd/Y/REE)(CO3)F |
Y | ⓘ Xenotime-(Y) | Y(PO4) |
Zr | Zirconium | |
Zr | ⓘ Zircon | Zr(SiO4) |
Nb | Niobium | |
Nb | ⓘ Rutile var. Ilmenorutile | (Ti,Nb)O2 |
Ba | Barium | |
Ba | ⓘ Baryte | BaSO4 |
Ce | Cerium | |
Ce | ⓘ Bastnäsite-(Ce) | Ce(CO3)F |
Ce | ⓘ Bastnäsite | (Ce/Nd/Y/REE)(CO3)F |
Ce | ⓘ Parisite-(Ce) | CaCe2(CO3)3F2 |
Nd | Neodymium | |
Nd | ⓘ Bastnäsite | (Ce/Nd/Y/REE)(CO3)F |
Th | Thorium | |
Th | ⓘ Thorite | Th(SiO4) |
Th | ⓘ Thorite var. Uranothorite | (Th,U)SiO4 |
U | Uranium | |
U | ⓘ Thorite var. Uranothorite | (Th,U)SiO4 |
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Bou Naga complex, Trarza Region, Mauritania