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Um Ara, Eastern Desert, Red Sea, Egypti
Regional Level Types
Um Ara- not defined -
Eastern DesertDesert
Red SeaGovernorate
EgyptCountry

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Latitude & Longitude (WGS84): 22° 38' 59'' North , 33° 49' 0'' East
Latitude & Longitude (decimal): 22.65000,33.81667
GeoHash:G#: su00ce29c
Köppen climate type:BWh : Hot deserts climate


Volcanic and metavolcanic rocks intruded by the Um Ara granites, a larger oval-shaped monzogranite pluton and a smaller alkali-feldspar microgranite emplaced at its northern contact. Both granites are peraluminous to metaluminous. The U- and Th-bearing alkali-feldspar granite is cut by pegmatite veins and locally abundant veinlets of purple and colourless fluorite. Secondary uranium minerals occur as disseminations, as aggregates, and as cavity fillings.

Regions containing this locality

African PlateTectonic Plate
Sahara Desert, North AfricaDesert

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


18 valid minerals.

Detailed Mineral List:

Albite
Formula: Na(AlSi3O8)
Reference: Abd El-Naby, H.H. (2009): Ore Geology Reviews 35, 436-446.
Calcite
Formula: CaCO3
Reference: Abd El-Naby, H.H. (2009): Ore Geology Reviews 35, 436-446.
Coffinite
Formula: U(SiO4) · nH2O
Reference: Abd El-Naby, H.H. (2009): Ore Geology Reviews 35, 436-446.
'Columbite-(Fe)-Columbite-(Mn) Series'
Reference: Abd El-Naby, H.H. (2009): Ore Geology Reviews 35, 436-446.
Fluorite
Formula: CaF2
Reference: Abd El-Naby, H.H. (2009): Ore Geology Reviews 35, 436-446.
Galena
Formula: PbS
Reference: Abd El-Naby, H.H. (2009): Ore Geology Reviews 35, 436-446.
Hematite
Formula: Fe2O3
Reference: Abd El-Naby, H.H. (2009): Ore Geology Reviews 35, 436-446.
Ilmenite
Formula: Fe2+TiO3
Reference: Abd El-Naby, H.H. (2009): Ore Geology Reviews 35, 436-446.
Kaolinite
Formula: Al2(Si2O5)(OH)4
Reference: Abd El-Naby, H.H. (2009): Ore Geology Reviews 35, 436-446.
'Limonite'
Formula: (Fe,O,OH,H2O)
Reference: Abd El-Naby, H.H. (2009): Ore Geology Reviews 35, 436-446.
'Manganese Oxides'
Reference: Abd El-Naby, H.H. (2009): Ore Geology Reviews 35, 436-446.
Microcline
Formula: K(AlSi3O8)
Reference: Abd El-Naby, H.H. (2009): Ore Geology Reviews 35, 436-446.
Microcline var: Amazonite
Formula: K(AlSi3O8)
Reference: Abd El-Naby, H.H. (2009): Ore Geology Reviews 35, 436-446.
'Monazite'
Reference: Abd El-Naby, H.H. (2009): Ore Geology Reviews 35, 436-446.
Polylithionite
Formula: KLi2Al(Si4O10)(F,OH)2
Reference: Abd El-Naby, H.H. (2009): Ore Geology Reviews 35, 436-446.
Quartz
Formula: SiO2
Reference: Abd El-Naby, H.H. (2009): Ore Geology Reviews 35, 436-446.
Spessartine
Formula: Mn2+3Al2(SiO4)3
Reference: Abd El-Naby, H.H. (2009): Ore Geology Reviews 35, 436-446.
Thorite
Formula: Th(SiO4)
Reference: Abd El-Naby, H.H. (2009): Ore Geology Reviews 35, 436-446.
Thorite var: Uranothorite
Formula: (Th,U)SiO4
Reference: Abd El-Naby, H.H. (2009): Ore Geology Reviews 35, 436-446.
'Thorogummite'
Formula: (Th,U)(SiO4)1-x(OH)4x
Reference: Abd El-Naby, H.H. (2009): Ore Geology Reviews 35, 436-446.
Uraninite
Formula: UO2
Reference: Abd El-Naby, H.H. (2009): Ore Geology Reviews 35, 436-446.
Uranophane
Formula: Ca(UO2)2(SiO3OH)2 · 5H2O
Reference: Abd El-Naby, H.H. (2009): Ore Geology Reviews 35, 436-446.
Uranophane-β
Formula: Ca(UO2)2(SiO3OH)2 · 5H2O
Reference: Abd El-Naby, H.H. (2009): Ore Geology Reviews 35, 436-446.
Xenotime-(Y)
Formula: Y(PO4)
Reference: Abd El-Naby, H.H. (2009): Ore Geology Reviews 35, 436-446.
Zircon
Formula: Zr(SiO4)
Reference: Abd El-Naby, H.H. (2009): Ore Geology Reviews 35, 436-446.

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
Galena2.CD.10PbS
Group 3 - Halides
Fluorite3.AB.25CaF2
Group 4 - Oxides and Hydroxides
Hematite4.CB.05Fe2O3
Ilmenite4.CB.05Fe2+TiO3
Quartz4.DA.05SiO2
Uraninite4.DL.05UO2
Group 5 - Nitrates and Carbonates
Calcite5.AB.05CaCO3
Group 8 - Phosphates, Arsenates and Vanadates
Xenotime-(Y)8.AD.35Y(PO4)
Group 9 - Silicates
Albite9.FA.35Na(AlSi3O8)
Coffinite9.AD.30U(SiO4) · nH2O
Kaolinite9.ED.05Al2(Si2O5)(OH)4
Microcline9.FA.30K(AlSi3O8)
var: Amazonite9.FA.30K(AlSi3O8)
Polylithionite9.EC.20KLi2Al(Si4O10)(F,OH)2
Spessartine9.AD.25Mn2+3Al2(SiO4)3
Thorite9.AD.30Th(SiO4)
var: Uranothorite9.AD.30(Th,U)SiO4
Uranophane9.AK.15Ca(UO2)2(SiO3OH)2 · 5H2O
Uranophane-β9.AK.15Ca(UO2)2(SiO3OH)2 · 5H2O
Zircon9.AD.30Zr(SiO4)
Unclassified Minerals, Rocks, etc.
'Columbite-(Fe)-Columbite-(Mn) Series'-
'Limonite'-(Fe,O,OH,H2O)
'Manganese Oxides'-
'Monazite'-
'Thorogummite'-(Th,U)(SiO4)1-x(OH)4x

List of minerals arranged by Dana 8th Edition classification

Group 2 - SULFIDES
AmXp, with m:p = 1:1
Galena2.8.1.1PbS
Group 4 - SIMPLE OXIDES
A2X3
Hematite4.3.1.2Fe2O3
Ilmenite4.3.5.1Fe2+TiO3
Group 5 - OXIDES CONTAINING URANIUM OR THORIUM
AXO2·xH2O
Uraninite5.1.1.1UO2
Group 9 - NORMAL HALIDES
AX2
Fluorite9.2.1.1CaF2
Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Calcite14.1.1.1CaCO3
Group 51 - NESOSILICATES Insular SiO4 Groups Only
Insular SiO4 Groups Only with cations in [6] and >[6] coordination
Spessartine51.4.3a.3Mn2+3Al2(SiO4)3
Insular SiO4 Groups Only with cations in >[6] coordination
Coffinite51.5.2.4U(SiO4) · nH2O
Thorite51.5.2.3Th(SiO4)
'Thorogummite'51.5.2.5(Th,U)(SiO4)1-x(OH)4x
Zircon51.5.2.1Zr(SiO4)
Group 53 - NESOSILICATES Insular SiO4 Groups and Other Anions or Complex Cations
Insular SiO4 Groups and Other Anions of Complex Cations with (UO2)
Uranophane53.3.1.2Ca(UO2)2(SiO3OH)2 · 5H2O
Uranophane-β53.3.1.9Ca(UO2)2(SiO3OH)2 · 5H2O
Group 71 - PHYLLOSILICATES Sheets of Six-Membered Rings
Sheets of 6-membered rings with 2:1 layers
Polylithionite71.2.2b.8KLi2Al(Si4O10)(F,OH)2
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Group 76 - TECTOSILICATES Al-Si Framework
Al-Si Framework with Al-Si frameworks
Albite76.1.3.1Na(AlSi3O8)
Microcline76.1.1.5K(AlSi3O8)
Unclassified Minerals, Mixtures, etc.
'Columbite-(Fe)-Columbite-(Mn) Series'-
Kaolinite-Al2(Si2O5)(OH)4
'Limonite'-(Fe,O,OH,H2O)
'Manganese Oxides'-
Microcline
var: Amazonite
-K(AlSi3O8)
'Monazite'-
Thorite
var: Uranothorite
-(Th,U)SiO4
Xenotime-(Y)-Y(PO4)

List of minerals for each chemical element

HHydrogen
H UranophaneCa(UO2)2(SiO3OH)2 · 5H2O
H Uranophane-βCa(UO2)2(SiO3OH)2 · 5H2O
H CoffiniteU(SiO4) · nH2O
H KaoliniteAl2(Si2O5)(OH)4
H Thorogummite(Th,U)(SiO4)1-x(OH)4x
H Limonite(Fe,O,OH,H2O)
LiLithium
Li PolylithioniteKLi2Al(Si4O10)(F,OH)2
CCarbon
C CalciteCaCO3
OOxygen
O MicroclineK(AlSi3O8)
O AlbiteNa(AlSi3O8)
O QuartzSiO2
O PolylithioniteKLi2Al(Si4O10)(F,OH)2
O SpessartineMn32+Al2(SiO4)3
O IlmeniteFe2+TiO3
O ZirconZr(SiO4)
O Xenotime-(Y)Y(PO4)
O Thorite (var: Uranothorite)(Th,U)SiO4
O UranophaneCa(UO2)2(SiO3OH)2 · 5H2O
O Uranophane-βCa(UO2)2(SiO3OH)2 · 5H2O
O Microcline (var: Amazonite)K(AlSi3O8)
O CoffiniteU(SiO4) · nH2O
O KaoliniteAl2(Si2O5)(OH)4
O HematiteFe2O3
O UraniniteUO2
O Thorogummite(Th,U)(SiO4)1-x(OH)4x
O Limonite(Fe,O,OH,H2O)
O ThoriteTh(SiO4)
O CalciteCaCO3
FFluorine
F PolylithioniteKLi2Al(Si4O10)(F,OH)2
F FluoriteCaF2
NaSodium
Na AlbiteNa(AlSi3O8)
AlAluminium
Al MicroclineK(AlSi3O8)
Al AlbiteNa(AlSi3O8)
Al PolylithioniteKLi2Al(Si4O10)(F,OH)2
Al SpessartineMn32+Al2(SiO4)3
Al Microcline (var: Amazonite)K(AlSi3O8)
Al KaoliniteAl2(Si2O5)(OH)4
SiSilicon
Si MicroclineK(AlSi3O8)
Si AlbiteNa(AlSi3O8)
Si QuartzSiO2
Si PolylithioniteKLi2Al(Si4O10)(F,OH)2
Si SpessartineMn32+Al2(SiO4)3
Si ZirconZr(SiO4)
Si Thorite (var: Uranothorite)(Th,U)SiO4
Si UranophaneCa(UO2)2(SiO3OH)2 · 5H2O
Si Uranophane-βCa(UO2)2(SiO3OH)2 · 5H2O
Si Microcline (var: Amazonite)K(AlSi3O8)
Si CoffiniteU(SiO4) · nH2O
Si KaoliniteAl2(Si2O5)(OH)4
Si Thorogummite(Th,U)(SiO4)1-x(OH)4x
Si ThoriteTh(SiO4)
PPhosphorus
P Xenotime-(Y)Y(PO4)
SSulfur
S GalenaPbS
KPotassium
K MicroclineK(AlSi3O8)
K PolylithioniteKLi2Al(Si4O10)(F,OH)2
K Microcline (var: Amazonite)K(AlSi3O8)
CaCalcium
Ca UranophaneCa(UO2)2(SiO3OH)2 · 5H2O
Ca Uranophane-βCa(UO2)2(SiO3OH)2 · 5H2O
Ca FluoriteCaF2
Ca CalciteCaCO3
TiTitanium
Ti IlmeniteFe2+TiO3
MnManganese
Mn SpessartineMn32+Al2(SiO4)3
FeIron
Fe IlmeniteFe2+TiO3
Fe HematiteFe2O3
Fe Limonite(Fe,O,OH,H2O)
YYttrium
Y Xenotime-(Y)Y(PO4)
ZrZirconium
Zr ZirconZr(SiO4)
PbLead
Pb GalenaPbS
ThThorium
Th Thorite (var: Uranothorite)(Th,U)SiO4
Th Thorogummite(Th,U)(SiO4)1-x(OH)4x
Th ThoriteTh(SiO4)
UUranium
U Thorite (var: Uranothorite)(Th,U)SiO4
U UranophaneCa(UO2)2(SiO3OH)2 · 5H2O
U Uranophane-βCa(UO2)2(SiO3OH)2 · 5H2O
U CoffiniteU(SiO4) · nH2O
U UraniniteUO2
U Thorogummite(Th,U)(SiO4)1-x(OH)4x

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

Ediacaran - Cryogenian
541 - 720 Ma



ID: 3308532

Age: Neoproterozoic (541 - 720 Ma)

Lithology: Sedimentary and volcaniclastic

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

Stenian - Ectasian
1000 - 1400 Ma



ID: 3184748
Mesoproterozoic volcanic and intrusive rocks

Age: Mesoproterozoic (1000 - 1400 Ma)

Lithology: Volcanic and intrusive igneous 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]

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)
Abd El-Naby, H.H. (2009) High and low temperature alteration of uranium and thorium minerals, Um Ara granites, south Eastern Desert, Egypt. Ore Geology Reviews, 35, 436-446.


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