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Guelb Richat, Adrar Region, Mauritania

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Latitude & Longitude (WGS84): 21° 7' 36'' North , 11° 24' 5'' West
Latitude & Longitude (decimal): 21.12688,-11.40166
GeoHash:G#: eezbhw194
Köppen climate type:BWh : Hot deserts climate


The area in and around the well-known circular structure Guelb Richat, located in Adrar Region, has been the object for diamond exploration. Carbonatite dikes and kimberlite is found in the area.

Regions containing this locality

Sahara Desert, North Africa

Desert - 706 mineral species & varietal names listed

West Africa

UN Subregion - 518 mineral species & varietal names listed

Northwest Africa Meteorites

Meteorite Fall Location - 829 mineral species & varietal names listed

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


16 valid minerals.

Detailed Mineral List:

Analcime
Formula: Na(AlSi2O6) · H2O
Reference: Guillaumen Matton (2008) Le Complexe Crétacé Du Rlchat (Mauritanie); Un Processus Alcalin Péri-Atlantiqu. PhD Thesis University of Montreal.
Anatase
Formula: TiO2
Reference: Guillaumen Matton (2008) Le Complexe Crétacé Du Rlchat (Mauritanie); Un Processus Alcalin Péri-Atlantiqu. PhD Thesis University of Montreal.
Ankerite
Formula: Ca(Fe2+,Mg)(CO3)2
Reference: Guillaumen Matton (2008) Le Complexe Crétacé Du Rlchat (Mauritanie); Un Processus Alcalin Péri-Atlantiqu. PhD Thesis University of Montreal.
'Apatite'
Reference: Guillaumen Matton (2008) Le Complexe Crétacé Du Rlchat (Mauritanie); Un Processus Alcalin Péri-Atlantiqu. PhD Thesis University of Montreal.
Baryte
Formula: BaSO4
Reference: Guillaumen Matton (2008) Le Complexe Crétacé Du Rlchat (Mauritanie); Un Processus Alcalin Péri-Atlantiqu. PhD Thesis University of Montreal.
Calcite
Formula: CaCO3
Reference: Guillaumen Matton (2008) Le Complexe Crétacé Du Rlchat (Mauritanie); Un Processus Alcalin Péri-Atlantiqu. PhD Thesis University of Montreal.
'Chlorite Group'
Reference: Guillaumen Matton (2008) Le Complexe Crétacé Du Rlchat (Mauritanie); Un Processus Alcalin Péri-Atlantiqu. PhD Thesis University of Montreal.
Dawsonite
Formula: NaAlCO3(OH)2
Reference: Guillaumen Matton (2008) Le Complexe Crétacé Du Rlchat (Mauritanie); Un Processus Alcalin Péri-Atlantiqu. PhD Thesis University of Montreal.
Diamond
Formula: C
Reference: Mining Journal May 7, 1999, p.334
Dolomite
Formula: CaMg(CO3)2
Reference: Guillaumen Matton (2008) Le Complexe Crétacé Du Rlchat (Mauritanie); Un Processus Alcalin Péri-Atlantiqu. PhD Thesis University of Montreal.
Gibbsite
Formula: Al(OH)3
Reference: Guillaumen Matton (2008) Le Complexe Crétacé Du Rlchat (Mauritanie); Un Processus Alcalin Péri-Atlantiqu. PhD Thesis University of Montreal.
Hematite
Formula: Fe2O3
Reference: Guillaumen Matton (2008) Le Complexe Crétacé Du Rlchat (Mauritanie); Un Processus Alcalin Péri-Atlantiqu. PhD Thesis University of Montreal.
Kaolinite
Formula: Al2(Si2O5)(OH)4
Reference: Guillaumen Matton (2008) Le Complexe Crétacé Du Rlchat (Mauritanie); Un Processus Alcalin Péri-Atlantiqu. PhD Thesis University of Montreal.
Magnetite
Formula: Fe2+Fe3+2O4
Reference: Guillaumen Matton (2008) Le Complexe Crétacé Du Rlchat (Mauritanie); Un Processus Alcalin Péri-Atlantiqu. PhD Thesis University of Montreal.
Nordstrandite
Formula: Al(OH)3
Reference: Guillaumen Matton (2008) Le Complexe Crétacé Du Rlchat (Mauritanie); Un Processus Alcalin Péri-Atlantiqu. PhD Thesis University of Montreal.
Phlogopite
Formula: KMg3(AlSi3O10)(OH)2
Reference: Guillaumen Matton (2008) Le Complexe Crétacé Du Rlchat (Mauritanie); Un Processus Alcalin Péri-Atlantiqu. PhD Thesis University of Montreal.
Pyrite
Formula: FeS2
Reference: Guillaumen Matton (2008) Le Complexe Crétacé Du Rlchat (Mauritanie); Un Processus Alcalin Péri-Atlantiqu. PhD Thesis University of Montreal.
'Pyrochlore' ?
Reference: Guillaumen Matton (2008) Le Complexe Crétacé Du Rlchat (Mauritanie); Un Processus Alcalin Péri-Atlantiqu. PhD Thesis University of Montreal.
Quartz
Formula: SiO2
Reference: Guillaumen Matton (2008) Le Complexe Crétacé Du Rlchat (Mauritanie); Un Processus Alcalin Péri-Atlantiqu. PhD Thesis University of Montreal.
'Serpentine Subgroup'
Formula: D3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
Reference: Guillaumen Matton (2008) Le Complexe Crétacé Du Rlchat (Mauritanie); Un Processus Alcalin Péri-Atlantiqu. PhD Thesis University of Montreal.
'Smectite Group'
Formula: A0.3D2-3[T4O10]Z2 · nH2O
Reference: Guillaumen Matton (2008) Le Complexe Crétacé Du Rlchat (Mauritanie); Un Processus Alcalin Péri-Atlantiqu. PhD Thesis University of Montreal.

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
'Diamond'1.CB.10aC
Group 2 - Sulphides and Sulfosalts
'Pyrite'2.EB.05aFeS2
Group 4 - Oxides and Hydroxides
'Anatase'4.DD.05TiO2
'Gibbsite'4.FE.10Al(OH)3
'Hematite'4.CB.05Fe2O3
'Magnetite'4.BB.05Fe2+Fe3+2O4
'Nordstrandite'4.FE.10Al(OH)3
'Quartz'4.DA.05SiO2
Group 5 - Nitrates and Carbonates
'Ankerite'5.AB.10Ca(Fe2+,Mg)(CO3)2
'Calcite'5.AB.05CaCO3
'Dawsonite'5.BB.10NaAlCO3(OH)2
'Dolomite'5.AB.10CaMg(CO3)2
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
'Baryte'7.AD.35BaSO4
Group 9 - Silicates
'Analcime'9.GB.05Na(AlSi2O6) · H2O
'Kaolinite'9.ED.05Al2(Si2O5)(OH)4
'Phlogopite'9.EC.20KMg3(AlSi3O10)(OH)2
Unclassified Minerals, Rocks, etc.
'Apatite'-
'Chlorite Group'-
'Pyrochlore' ?-
'Serpentine Subgroup'-D3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
'Smectite Group'-A0.3D2-3[T4O10]Z2 · nH2O

List of minerals arranged by Dana 8th Edition classification

Group 1 - NATIVE ELEMENTS AND ALLOYS
Semi-metals and non-metals
Diamond1.3.6.1C
Group 2 - SULFIDES
AmBnXp, with (m+n):p = 1:2
Pyrite2.12.1.1FeS2
Group 4 - SIMPLE OXIDES
A2X3
Hematite4.3.1.2Fe2O3
AX2
Anatase4.4.4.1TiO2
Group 6 - HYDROXIDES AND OXIDES CONTAINING HYDROXYL
X(OH)3
Gibbsite6.3.1.1Al(OH)3
Nordstrandite6.3.3.1Al(OH)3
Group 7 - MULTIPLE OXIDES
AB2X4
Magnetite7.2.2.3Fe2+Fe3+2O4
Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Calcite14.1.1.1CaCO3
AB(XO3)2
Ankerite14.2.1.2Ca(Fe2+,Mg)(CO3)2
Dolomite14.2.1.1CaMg(CO3)2
Group 16a - ANHYDROUS CARBONATES CONTAINING HYDROXYL OR HALOGEN
Dawsonite16a.3.8.1NaAlCO3(OH)2
Group 28 - ANHYDROUS ACID AND NORMAL SULFATES
AXO4
Baryte28.3.1.1BaSO4
Group 71 - PHYLLOSILICATES Sheets of Six-Membered Rings
Sheets of 6-membered rings with 2:1 layers
Phlogopite71.2.2b.1KMg3(AlSi3O10)(OH)2
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Group 77 - TECTOSILICATES Zeolites
Zeolite group - True zeolites
Analcime77.1.1.1Na(AlSi2O6) · H2O
Unclassified Minerals, Rocks, etc.
'Apatite'-
'Chlorite Group'-
Kaolinite-Al2(Si2O5)(OH)4
'Pyrochlore' ?-
'Serpentine Subgroup'-D3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
'Smectite Group'-A0.3D2-3[T4O10]Z2 · nH2O

List of minerals for each chemical element

HHydrogen
H AnalcimeNa(AlSi2O6) · H2O
H DawsoniteNaAlCO3(OH)2
H GibbsiteAl(OH)3
H KaoliniteAl2(Si2O5)(OH)4
H NordstranditeAl(OH)3
H PhlogopiteKMg3(AlSi3O10)(OH)2
H Serpentine SubgroupD3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
H Smectite GroupA0.3D2-3[T4O10]Z2 · nH2O
CCarbon
C AnkeriteCa(Fe2+,Mg)(CO3)2
C CalciteCaCO3
C DawsoniteNaAlCO3(OH)2
C DiamondC
C DolomiteCaMg(CO3)2
OOxygen
O AnalcimeNa(AlSi2O6) · H2O
O AnataseTiO2
O AnkeriteCa(Fe2+,Mg)(CO3)2
O BaryteBaSO4
O CalciteCaCO3
O DawsoniteNaAlCO3(OH)2
O DolomiteCaMg(CO3)2
O GibbsiteAl(OH)3
O HematiteFe2O3
O KaoliniteAl2(Si2O5)(OH)4
O MagnetiteFe2+Fe23+O4
O NordstranditeAl(OH)3
O PhlogopiteKMg3(AlSi3O10)(OH)2
O QuartzSiO2
O Serpentine SubgroupD3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
O Smectite GroupA0.3D2-3[T4O10]Z2 · nH2O
NaSodium
Na AnalcimeNa(AlSi2O6) · H2O
Na DawsoniteNaAlCO3(OH)2
MgMagnesium
Mg AnkeriteCa(Fe2+,Mg)(CO3)2
Mg DolomiteCaMg(CO3)2
Mg PhlogopiteKMg3(AlSi3O10)(OH)2
Mg Serpentine SubgroupD3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
AlAluminium
Al AnalcimeNa(AlSi2O6) · H2O
Al DawsoniteNaAlCO3(OH)2
Al GibbsiteAl(OH)3
Al KaoliniteAl2(Si2O5)(OH)4
Al NordstranditeAl(OH)3
Al PhlogopiteKMg3(AlSi3O10)(OH)2
Al Serpentine SubgroupD3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
SiSilicon
Si AnalcimeNa(AlSi2O6) · H2O
Si KaoliniteAl2(Si2O5)(OH)4
Si PhlogopiteKMg3(AlSi3O10)(OH)2
Si QuartzSiO2
Si Serpentine SubgroupD3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
SSulfur
S BaryteBaSO4
S PyriteFeS2
KPotassium
K PhlogopiteKMg3(AlSi3O10)(OH)2
CaCalcium
Ca AnkeriteCa(Fe2+,Mg)(CO3)2
Ca CalciteCaCO3
Ca DolomiteCaMg(CO3)2
TiTitanium
Ti AnataseTiO2
MnManganese
Mn Serpentine SubgroupD3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
FeIron
Fe AnkeriteCa(Fe2+,Mg)(CO3)2
Fe HematiteFe2O3
Fe MagnetiteFe2+Fe23+O4
Fe PyriteFeS2
Fe Serpentine SubgroupD3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
NiNickel
Ni Serpentine SubgroupD3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
ZnZinc
Zn Serpentine SubgroupD3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
BaBarium
Ba BaryteBaSO4

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

Ordovician - Cambrian
443.8 - 541 Ma



ID: 3189458
Paleozoic sedimentary rocks

Age: Paleozoic (443.8 - 541 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]

Neoproterozoic - Mesoproterozoic
541 - 1600 Ma



ID: 3307831

Age: Proterozoic (541 - 1600 Ma)

Lithology: Sedimentary

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

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Guillaumen Matton (2008) Le Complexe Crétacé Du Rlchat (Mauritanie); Un Processus Alcalin Péri-Atlantiqu. PhD Thesis University of Montreal.


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