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Bou Naga complex, Trarza Region, Mauritaniai
Regional Level Types
Bou Naga complexComplex
Trarza RegionRegion
MauritaniaCountry

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PhotosMapsSearch
08410330015283940051782.jpg
Block with fluorite, hematite and bastnäsite

Bou Naga complex, Trarza Region, Mauritania
08410330015283940051782.jpg
Block with fluorite, hematite and bastnäsite

Bou Naga complex, Trarza Region, Mauritania
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 Elements

Mineral List


19 valid minerals.

Detailed Mineral List:

Ankerite
Formula: Ca(Fe2+,Mg)(CO3)2
'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
Cryptomelane
Formula: K(Mn4+7Mn3+)O16
Epidote
Formula: (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Fluorite
Formula: CaF2
Goethite
Formula: α-Fe3+O(OH)
Hematite
Formula: Fe2O3
Magnetite
Formula: Fe2+Fe3+2O4
Malachite
Formula: Cu2(CO3)(OH)2
'Monazite'
Formula: REE(PO4)
Parisite-(Ce)
Formula: CaCe2(CO3)3F2
Pyrite
Formula: FeS2
Quartz
Formula: SiO2
Riebeckite
Formula: ◻[Na2][Fe2+3Fe3+2]Si8O22(OH)2
Rutile
Formula: TiO2
Rutile var. Ilmenorutile
Formula: (Ti,Nb)O2
Siderite
Formula: FeCO3
Thorite
Formula: Th(SiO4)
Thorite var. Uranothorite
Formula: (Th,U)SiO4
Xenotime-(Y)
Formula: Y(PO4)
Zircon
Formula: Zr(SiO4)

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
Pyrite2.EB.05aFeS2
Group 3 - Halides
Fluorite3.AB.25CaF2
Group 4 - Oxides and Hydroxides
Goethite4.00.α-Fe3+O(OH)
Magnetite4.BB.05Fe2+Fe3+2O4
Hematite4.CB.05Fe2O3
Quartz4.DA.05SiO2
Rutile4.DB.05TiO2
var. Ilmenorutile4.DB.05(Ti,Nb)O2
Cryptomelane4.DK.05aK(Mn4+7Mn3+)O16
Group 5 - Nitrates and Carbonates
Siderite5.AB.05FeCO3
Ankerite5.AB.10Ca(Fe2+,Mg)(CO3)2
Malachite5.BA.10Cu2(CO3)(OH)2
Bastnäsite-(Ce)5.BD.20aCe(CO3)F
Parisite-(Ce)5.BD.20bCaCe2(CO3)3F2
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
Baryte7.AD.35BaSO4
Group 8 - Phosphates, Arsenates and Vanadates
Xenotime-(Y)8.AD.35Y(PO4)
Group 9 - Silicates
Zircon9.AD.30Zr(SiO4)
Thorite
var. Uranothorite
9.AD.30(Th,U)SiO4
9.AD.30Th(SiO4)
Epidote9.BG.05a(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Riebeckite9.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

HHydrogen
H Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
H Goethiteα-Fe3+O(OH)
H MalachiteCu2(CO3)(OH)2
H Riebeckite◻[Na2][Fe32+Fe23+]Si8O22(OH)2
H ApatiteCa5(PO4)3(Cl/F/OH)
CCarbon
C AnkeriteCa(Fe2+,Mg)(CO3)2
C Bastnäsite-(Ce)Ce(CO3)F
C Bastnäsite(Ce/Nd/Y/REE)(CO3)F
C MalachiteCu2(CO3)(OH)2
C Parisite-(Ce)CaCe2(CO3)3F2
C SideriteFeCO3
OOxygen
O AnkeriteCa(Fe2+,Mg)(CO3)2
O BaryteBaSO4
O Bastnäsite-(Ce)Ce(CO3)F
O Bastnäsite(Ce/Nd/Y/REE)(CO3)F
O CryptomelaneK(Mn74+Mn3+)O16
O Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
O Goethiteα-Fe3+O(OH)
O HematiteFe2O3
O Rutile var. Ilmenorutile(Ti,Nb)O2
O MagnetiteFe2+Fe23+O4
O MalachiteCu2(CO3)(OH)2
O MonaziteREE(PO4)
O Parisite-(Ce)CaCe2(CO3)3F2
O QuartzSiO2
O Riebeckite◻[Na2][Fe32+Fe23+]Si8O22(OH)2
O RutileTiO2
O SideriteFeCO3
O ThoriteTh(SiO4)
O Xenotime-(Y)Y(PO4)
O ZirconZr(SiO4)
O Thorite var. Uranothorite(Th,U)SiO4
O ApatiteCa5(PO4)3(Cl/F/OH)
FFluorine
F Bastnäsite-(Ce)Ce(CO3)F
F Bastnäsite(Ce/Nd/Y/REE)(CO3)F
F FluoriteCaF2
F Parisite-(Ce)CaCe2(CO3)3F2
F ApatiteCa5(PO4)3(Cl/F/OH)
NaSodium
Na Riebeckite◻[Na2][Fe32+Fe23+]Si8O22(OH)2
MgMagnesium
Mg AnkeriteCa(Fe2+,Mg)(CO3)2
AlAluminium
Al Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
SiSilicon
Si Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Si QuartzSiO2
Si Riebeckite◻[Na2][Fe32+Fe23+]Si8O22(OH)2
Si ThoriteTh(SiO4)
Si ZirconZr(SiO4)
Si Thorite var. Uranothorite(Th,U)SiO4
PPhosphorus
P MonaziteREE(PO4)
P Xenotime-(Y)Y(PO4)
P ApatiteCa5(PO4)3(Cl/F/OH)
SSulfur
S BaryteBaSO4
S PyriteFeS2
ClChlorine
Cl ApatiteCa5(PO4)3(Cl/F/OH)
KPotassium
K CryptomelaneK(Mn74+Mn3+)O16
CaCalcium
Ca AnkeriteCa(Fe2+,Mg)(CO3)2
Ca Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Ca FluoriteCaF2
Ca Parisite-(Ce)CaCe2(CO3)3F2
Ca ApatiteCa5(PO4)3(Cl/F/OH)
TiTitanium
Ti Rutile var. Ilmenorutile(Ti,Nb)O2
Ti RutileTiO2
MnManganese
Mn CryptomelaneK(Mn74+Mn3+)O16
FeIron
Fe AnkeriteCa(Fe2+,Mg)(CO3)2
Fe Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Fe Goethiteα-Fe3+O(OH)
Fe HematiteFe2O3
Fe MagnetiteFe2+Fe23+O4
Fe PyriteFeS2
Fe Riebeckite◻[Na2][Fe32+Fe23+]Si8O22(OH)2
Fe SideriteFeCO3
CuCopper
Cu MalachiteCu2(CO3)(OH)2
YYttrium
Y Bastnäsite(Ce/Nd/Y/REE)(CO3)F
Y Xenotime-(Y)Y(PO4)
ZrZirconium
Zr ZirconZr(SiO4)
NbNiobium
Nb Rutile var. Ilmenorutile(Ti,Nb)O2
BaBarium
Ba BaryteBaSO4
CeCerium
Ce Bastnäsite-(Ce)Ce(CO3)F
Ce Bastnäsite(Ce/Nd/Y/REE)(CO3)F
Ce Parisite-(Ce)CaCe2(CO3)3F2
NdNeodymium
Nd Bastnäsite(Ce/Nd/Y/REE)(CO3)F
ThThorium
Th ThoriteTh(SiO4)
Th Thorite var. Uranothorite(Th,U)SiO4
UUranium
U Thorite var. Uranothorite(Th,U)SiO4

Other Regions, Features and Areas containing this locality

African PlateTectonic Plate
North Africa
West AfricaUN Subregion

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References

 
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