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Um Dwiela, Red Sea Governorate, Egypti
Regional Level Types
Um DwielaOutcrop
Red Sea GovernorateGovernorate
EgyptCountry

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Latitude & Longitude (WGS84):
22° 18' North , 33° 28' East
Latitude & Longitude (decimal):
22.30000,33.46667
GRN:
N15E22
Type:
Outcrop
Köppen climate type:
BWh : Hot deserts climate
Mindat Locality ID:
477501
Long-form identifier:
mindat:1:2:477501:3
GUID (UUID V4):
0


The area is dissected by a prominent bostonite dyke that trends NE-SW, extending for approximately 12 km with widths ranging from 1 to 13 m. This dyke cut three distinct country rock units: metasediments and metavolcanics. Evidence of extensive hydrothermal activity is manifested through pervasive silicification, ferrugination, fluoritization, and kaolinization.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List


13 valid minerals.

Rock Types Recorded


Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

ⓘ Albite
Formula: Na(AlSi3O8)
ⓘ Albite var. Andesine
Formula: (Na,Ca)[Al(Si,Al)Si2O8]
ⓘ Alunite
Formula: KAl3(SO4)2(OH)6
ⓘ 'Amphibole Supergroup'
Formula: AB2C5(T8O22)W2
ⓘ 'Chlorite Group'
ⓘ Epidote
Formula: (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
ⓘ 'Feldspar Group'
ⓘ Hematite
Formula: Fe2O3
ⓘ Kaolinite
Formula: Al2(Si2O5)(OH)4
ⓘ Kasolite
Formula: Pb(UO2)(SiO4) · H2O
ⓘ 'K Feldspar'
ⓘ 'Monazite Group'
Formula: REE(PO4)
ⓘ Muscovite
Formula: KAl2(AlSi3O10)(OH)2
ⓘ Muscovite var. Illite
Formula: K0.65Al2.0[Al0.65Si3.35O10](OH)2
ⓘ Muscovite var. Sericite
Formula: KAl2(AlSi3O10)(OH)2
ⓘ 'Ochre'
ⓘ Orthoclase
Formula: K(AlSi3O8)
ⓘ 'Plagioclase'
Formula: (Na,Ca)[(Si,Al)AlSi2]O8
ⓘ Quartz
Formula: SiO2
ⓘ Thorite
Formula: Th(SiO4)
ⓘ Thorite var. Uranothorite
Formula: (Th,U)SiO4
ⓘ Uraninite
Formula: UO2
ⓘ Uranophane
Formula: Ca(UO2)2(SiO3OH)2 · 5H2O
ⓘ 'Xenotime'
ⓘ Zircon
Formula: Zr(SiO4)

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
ⓘHematite4.CB.05Fe2O3
ⓘQuartz4.DA.05SiO2
ⓘUraninite4.DL.05UO2
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
ⓘAlunite7.BC.10KAl3(SO4)2(OH)6
Group 9 - Silicates
ⓘThorite9.AD.30Th(SiO4)
ⓘZircon9.AD.30Zr(SiO4)
ⓘThorite
var. Uranothorite		9.AD.30(Th,U)SiO4
ⓘKasolite9.AK.15Pb(UO2)(SiO4) · H2O
ⓘUranophane9.AK.15Ca(UO2)2(SiO3OH)2 · 5H2O
ⓘEpidote9.BG.05a(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
ⓘMuscovite
var. Illite		9.EC.15K0.65Al2.0[Al0.65Si3.35O10](OH)2
ⓘ9.EC.15KAl2(AlSi3O10)(OH)2
ⓘvar. Sericite9.EC.15KAl2(AlSi3O10)(OH)2
ⓘKaolinite9.ED.05Al2(Si2O5)(OH)4
ⓘOrthoclase9.FA.30K(AlSi3O8)
ⓘAlbite9.FA.35Na(AlSi3O8)
ⓘvar. Andesine9.FA.35(Na,Ca)[Al(Si,Al)Si2O8]
Unclassified
ⓘ'Amphibole Supergroup'-AB2C5(T8O22)W2
ⓘ'Chlorite Group'-
ⓘ'Feldspar Group'-
ⓘ'Monazite Group'-REE(PO4)
ⓘ'Xenotime'-
ⓘ'Plagioclase'-(Na,Ca)[(Si,Al)AlSi2]O8
ⓘ'K Feldspar'-
ⓘ'Ochre'-

List of minerals for each chemical element

HHydrogen
Hⓘ AluniteKAl3(SO4)2(OH)6
Hⓘ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Hⓘ Muscovite var. IlliteK0.65Al2.0[Al0.65Si3.35O10](OH)2
Hⓘ KaoliniteAl2(Si2O5)(OH)4
Hⓘ KasolitePb(UO2)(SiO4) · H2O
Hⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Hⓘ UranophaneCa(UO2)2(SiO3OH)2 · 5H2O
Hⓘ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
OOxygen
Oⓘ AlbiteNa(AlSi3O8)
Oⓘ AluniteKAl3(SO4)2(OH)6
Oⓘ Amphibole SupergroupAB2C5(T8O22)W2
Oⓘ Albite var. Andesine(Na,Ca)[Al(Si,Al)Si2O8]
Oⓘ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Oⓘ HematiteFe2O3
Oⓘ Muscovite var. IlliteK0.65Al2.0[Al0.65Si3.35O10](OH)2
Oⓘ KaoliniteAl2(Si2O5)(OH)4
Oⓘ KasolitePb(UO2)(SiO4) · H2O
Oⓘ Monazite GroupREE(PO4)
Oⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Oⓘ OrthoclaseK(AlSi3O8)
Oⓘ QuartzSiO2
Oⓘ ThoriteTh(SiO4)
Oⓘ UraniniteUO2
Oⓘ UranophaneCa(UO2)2(SiO3OH)2 · 5H2O
Oⓘ ZirconZr(SiO4)
Oⓘ Thorite var. Uranothorite(Th,U)SiO4
Oⓘ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
Oⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
NaSodium
Naⓘ AlbiteNa(AlSi3O8)
Naⓘ Albite var. Andesine(Na,Ca)[Al(Si,Al)Si2O8]
Naⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
AlAluminium
Alⓘ AlbiteNa(AlSi3O8)
Alⓘ AluniteKAl3(SO4)2(OH)6
Alⓘ Albite var. Andesine(Na,Ca)[Al(Si,Al)Si2O8]
Alⓘ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Alⓘ Muscovite var. IlliteK0.65Al2.0[Al0.65Si3.35O10](OH)2
Alⓘ KaoliniteAl2(Si2O5)(OH)4
Alⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Alⓘ OrthoclaseK(AlSi3O8)
Alⓘ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
Alⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
SiSilicon
Siⓘ AlbiteNa(AlSi3O8)
Siⓘ Albite var. Andesine(Na,Ca)[Al(Si,Al)Si2O8]
Siⓘ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Siⓘ Muscovite var. IlliteK0.65Al2.0[Al0.65Si3.35O10](OH)2
Siⓘ KaoliniteAl2(Si2O5)(OH)4
Siⓘ KasolitePb(UO2)(SiO4) · H2O
Siⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Siⓘ OrthoclaseK(AlSi3O8)
Siⓘ QuartzSiO2
Siⓘ ThoriteTh(SiO4)
Siⓘ UranophaneCa(UO2)2(SiO3OH)2 · 5H2O
Siⓘ ZirconZr(SiO4)
Siⓘ Thorite var. Uranothorite(Th,U)SiO4
Siⓘ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
Siⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
PPhosphorus
Pⓘ Monazite GroupREE(PO4)
SSulfur
Sⓘ AluniteKAl3(SO4)2(OH)6
KPotassium
Kⓘ AluniteKAl3(SO4)2(OH)6
Kⓘ Muscovite var. IlliteK0.65Al2.0[Al0.65Si3.35O10](OH)2
Kⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Kⓘ OrthoclaseK(AlSi3O8)
Kⓘ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
CaCalcium
Caⓘ Albite var. Andesine(Na,Ca)[Al(Si,Al)Si2O8]
Caⓘ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Caⓘ UranophaneCa(UO2)2(SiO3OH)2 · 5H2O
Caⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
FeIron
Feⓘ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Feⓘ HematiteFe2O3
ZrZirconium
Zrⓘ ZirconZr(SiO4)
PbLead
Pbⓘ KasolitePb(UO2)(SiO4) · H2O
ThThorium
Thⓘ ThoriteTh(SiO4)
Thⓘ Thorite var. Uranothorite(Th,U)SiO4
UUranium
Uⓘ KasolitePb(UO2)(SiO4) · H2O
Uⓘ UraniniteUO2
Uⓘ UranophaneCa(UO2)2(SiO3OH)2 · 5H2O
Uⓘ Thorite var. Uranothorite(Th,U)SiO4

Other Regions, Features and Areas containing this locality

AfricaContinent
African PlateTectonic Plate
Arabian Plate

This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.

References

[1]Saleh, Gehad M.; Alhazani, Tamader; Kamh, Samir Z.; El-Badry, Basma A.; Sami, Mabrouk; Sanislav, Ioan V.; Lasheen, El Saeed R. (2026) Remote Sensing, Mineralogy, and Radioactive Prospecting of the Bostonite Dykes: Radiological Hazard Evaluation. Minerals, 16 (6). doi:10.3390/min16060621
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