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Gabbro Akarem Cu-Ni deposit, Eastern Desert, Red Sea, Egypti
Regional Level Types
Gabbro Akarem Cu-Ni depositDeposit
Eastern DesertDesert
Red SeaGovernorate
EgyptCountry

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Latitude & Longitude (WGS84): 24° North , 34° East
Latitude & Longitude (decimal): 24.00000,34.00000
GeoHash:G#: su20t9n41
Locality type:Deposit
Köppen climate type:BWh : Hot deserts climate


Concentrically zoned mafic-ultramafic intrusion, composed mainly of plagioclase hornblendite (60%), olivine-plagioclase hornblendite (20%), and minor hornblende-plagioclase pyroxenite, olivine-hornblende clinopyroxenite, lherzolite and dunite (17% overall). The dunite core is surrounded by an envelope of sulphide-bearing ultramafic rocks, zoned laterally from inner spinel lherzolite through olivine-hornblende clinopyroxenite to outer hornblende-plagioclase pyroxenite.

Located about 130 km east of Aswan (Assuan).

Regions containing this locality

African PlateTectonic Plate
Sahara Desert, North AfricaDesert

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


22 valid minerals.

Rock Types Recorded

Note: this is a very new system on mindat.org and data is currently VERY limited. Please bear with us while we work towards adding this information!

Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

'Albite-Anorthite Series'
Reference: Helmy, H.M., and Mogessie, A. (2001): Mineralium Deposita 36, 58-71.
Augite
Formula: (CaxMgyFez)(Mgy1Fez1)Si2O6
Reference: Helmy, H.M., and Mogessie, A. (2001): Mineralium Deposita 36, 58-71.
Chalcopyrite
Formula: CuFeS2
Reference: Helmy, H.M., and Mogessie, A. (2001): Mineralium Deposita 36, 58-71.
'Chlorite Group'
Reference: Helmy, H.M., and Mogessie, A. (2001): Mineralium Deposita 36, 58-71.
'Chrome-Spinel (of Dana)'
Reference: Helmy, H.M., and Mogessie, A. (2001): Mineralium Deposita 36, 58-71.
Chrysocolla
Formula: Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
Cubanite
Formula: CuFe2S3
Reference: Helmy, H.M., and Mogessie, A. (2001): Mineralium Deposita 36, 58-71.
Diopside
Formula: CaMgSi2O6
Reference: Helmy, H.M., and Mogessie, A. (2001): Mineralium Deposita 36, 58-71.
'Electrum'
Formula: (Au, Ag)
Reference: Helmy, H.M., and Mogessie, A. (2001): Mineralium Deposita 36, 58-71.
'Fayalite-Forsterite Series'
Reference: Helmy, H.M., and Mogessie, A. (2001): Mineralium Deposita 36, 58-71.
'Garnierite'
Gold
Formula: Au
Reference: Helmy, H.M., and Mogessie, A. (2001): Mineralium Deposita 36, 58-71.
Hessite
Formula: Ag2Te
Reference: Helmy, H.M., and Mogessie, A. (2001): Mineralium Deposita 36, 58-71.
Mackinawite
Formula: (Fe,Ni)9S8
Reference: Helmy, H.M., and Mogessie, A. (2001): Mineralium Deposita 36, 58-71.
Magnesio-hornblende
Formula: ☐{Ca2}{Mg4Al}(AlSi7O22)(OH)2
Reference: Helmy, H.M., and Mogessie, A. (2001): Mineralium Deposita 36, 58-71.
Magnesite
Formula: MgCO3
Reference: Helmy, H.M., and Mogessie, A. (2001): Mineralium Deposita 36, 58-71.
Magnetite
Formula: Fe2+Fe3+2O4
Reference: Helmy, H.M., and Mogessie, A. (2001): Mineralium Deposita 36, 58-71.
Malachite
Formula: Cu2(CO3)(OH)2
Marcasite
Formula: FeS2
Reference: Helmy, H.M., and Mogessie, A. (2001): Mineralium Deposita 36, 58-71.
Melonite
Formula: NiTe2
Reference: Helmy, H.M., and Mogessie, A. (2001): Mineralium Deposita 36, 58-71.
Melonite var: Palladian Melonite
Formula: NiTe2
Reference: Helmy, H.M., and Mogessie, A. (2001): Mineralium Deposita 36, 58-71.
Merenskyite
Formula: (Pd,Pt)(Te,Bi)2
Reference: Helmy, H.M., and Mogessie, A. (2001): Mineralium Deposita 36, 58-71.
Michenerite
Formula: PdBiTe
Reference: Helmy, H.M., and Mogessie, A. (2001): Mineralium Deposita 36, 58-71.
Pentlandite
Formula: (FexNiy)Σ9S8
Reference: Helmy, H.M., and Mogessie, A. (2001): Mineralium Deposita 36, 58-71.
Pyrite
Formula: FeS2
Reference: Helmy, H.M., and Mogessie, A. (2001): Mineralium Deposita 36, 58-71.
Pyrrhotite
Formula: Fe7S8
Reference: Helmy, H.M., and Mogessie, A. (2001): Mineralium Deposita 36, 58-71.
'Serpentine Subgroup'
Formula: D3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
Reference: Helmy, H.M., and Mogessie, A. (2001): Mineralium Deposita 36, 58-71.
Spinel
Formula: MgAl2O4
Reference: Helmy, H.M., and Mogessie, A. (2001): Mineralium Deposita 36, 58-71.
Valleriite
Formula: (Fe2+,Cu)4(Mg,Al)3S4(OH,O)6
Reference: Helmy, H.M., and Mogessie, A. (2001): Mineralium Deposita 36, 58-71.
Violarite
Formula: Fe2+Ni3+2S4
Reference: Helmy, H.M., and Mogessie, A. (2001): Mineralium Deposita 36, 58-71.

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
'Electrum'1.AA.05(Au, Ag)
Gold1.AA.05Au
Group 2 - Sulphides and Sulfosalts
Chalcopyrite2.CB.10aCuFeS2
Cubanite2.CB.55aCuFe2S3
Hessite2.BA.60Ag2Te
Mackinawite2.CC.25(Fe,Ni)9S8
Marcasite2.EB.10aFeS2
Melonite2.EA.20NiTe2
var: Palladian Melonite2.EA.20NiTe2
Merenskyite2.EA.20(Pd,Pt)(Te,Bi)2
Michenerite2.EB.25PdBiTe
Pentlandite2.BB.15(FexNiy)Σ9S8
Pyrite2.EB.05aFeS2
Pyrrhotite2.CC.10Fe7S8
Valleriite2.FD.30(Fe2+,Cu)4(Mg,Al)3S4(OH,O)6
Violarite2.DA.05Fe2+Ni3+2S4
Group 4 - Oxides and Hydroxides
Magnetite4.BB.05Fe2+Fe3+2O4
Spinel4.BB.05MgAl2O4
Group 5 - Nitrates and Carbonates
Magnesite5.AB.05MgCO3
Malachite5.BA.10Cu2(CO3)(OH)2
Group 9 - Silicates
Augite9.DA.15(CaxMgyFez)(Mgy1Fez1)Si2O6
Chrysocolla9.ED.20Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
Diopside9.DA.15CaMgSi2O6
Magnesio-hornblende9.DE.10☐{Ca2}{Mg4Al}(AlSi7O22)(OH)2
Unclassified Minerals, Rocks, etc.
'Albite-Anorthite Series'-
'Chlorite Group'-
'Chrome-Spinel (of Dana)'-
'Fayalite-Forsterite Series'-
'Garnierite'-
'Serpentine Subgroup'-D3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn

List of minerals arranged by Dana 8th Edition classification

Group 1 - NATIVE ELEMENTS AND ALLOYS
Metals, other than the Platinum Group
Gold1.1.1.1Au
Group 2 - SULFIDES
AmBnXp, with (m+n):p = 2:1
Hessite2.4.2.1Ag2Te
AmBnXp, with (m+n):p = 9:8
Mackinawite2.7.2.1(Fe,Ni)9S8
Pentlandite2.7.1.1(FexNiy)Σ9S8
AmXp, with m:p = 1:1
Pyrrhotite2.8.10.1Fe7S8
AmBnXp, with (m+n):p = 1:1
Chalcopyrite2.9.1.1CuFeS2
Cubanite2.9.13.1CuFe2S3
AmBnXp, with (m+n):p = 3:4
Violarite2.10.1.8Fe2+Ni3+2S4
AmBnXp, with (m+n):p = 1:2
Marcasite2.12.2.1FeS2
Melonite2.12.14.1NiTe2
Merenskyite2.12.14.4(Pd,Pt)(Te,Bi)2
Michenerite2.12.3.11PdBiTe
Pyrite2.12.1.1FeS2
Hydroxysulfides and Hydrated Sulfides
Valleriite2.14.1.1(Fe2+,Cu)4(Mg,Al)3S4(OH,O)6
Group 7 - MULTIPLE OXIDES
AB2X4
Magnetite7.2.2.3Fe2+Fe3+2O4
Spinel7.2.1.1MgAl2O4
Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Magnesite14.1.1.2MgCO3
Group 16a - ANHYDROUS CARBONATES CONTAINING HYDROXYL OR HALOGEN
Malachite16a.3.1.1Cu2(CO3)(OH)2
Group 65 - INOSILICATES Single-Width,Unbranched Chains,(W=1)
Single-Width Unbranched Chains, W=1 with chains P=2
Augite65.1.3a.3(CaxMgyFez)(Mgy1Fez1)Si2O6
Diopside65.1.3a.1CaMgSi2O6
Group 74 - PHYLLOSILICATES Modulated Layers
Modulated Layers with joined strips
Chrysocolla74.3.2.1Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
Unclassified Minerals, Mixtures, etc.
'Albite-Anorthite Series'-
'Chlorite Group'-
'Chrome-Spinel (of Dana)'-
'Electrum'-(Au, Ag)
'Fayalite-Forsterite Series'-
'Garnierite'-
Magnesio-hornblende-☐{Ca2}{Mg4Al}(AlSi7O22)(OH)2
Melonite
var: Palladian Melonite
-NiTe2
'Serpentine Subgroup'-D3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn

List of minerals for each chemical element

HHydrogen
H ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
H MalachiteCu2(CO3)(OH)2
H Magnesio-hornblende☐{Ca2}{Mg4Al}(AlSi7O22)(OH)2
H Valleriite(Fe2+,Cu)4(Mg,Al)3S4(OH,O)6
H Serpentine SubgroupD3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
CCarbon
C MalachiteCu2(CO3)(OH)2
C MagnesiteMgCO3
OOxygen
O ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
O MalachiteCu2(CO3)(OH)2
O Magnesio-hornblende☐{Ca2}{Mg4Al}(AlSi7O22)(OH)2
O MagnetiteFe2+Fe23+O4
O DiopsideCaMgSi2O6
O Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
O Valleriite(Fe2+,Cu)4(Mg,Al)3S4(OH,O)6
O MagnesiteMgCO3
O Serpentine SubgroupD3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
O SpinelMgAl2O4
MgMagnesium
Mg Magnesio-hornblende☐{Ca2}{Mg4Al}(AlSi7O22)(OH)2
Mg DiopsideCaMgSi2O6
Mg Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Mg Valleriite(Fe2+,Cu)4(Mg,Al)3S4(OH,O)6
Mg MagnesiteMgCO3
Mg Serpentine SubgroupD3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
Mg SpinelMgAl2O4
AlAluminium
Al ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
Al Magnesio-hornblende☐{Ca2}{Mg4Al}(AlSi7O22)(OH)2
Al Valleriite(Fe2+,Cu)4(Mg,Al)3S4(OH,O)6
Al Serpentine SubgroupD3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
Al SpinelMgAl2O4
SiSilicon
Si ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
Si Magnesio-hornblende☐{Ca2}{Mg4Al}(AlSi7O22)(OH)2
Si DiopsideCaMgSi2O6
Si Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Si Serpentine SubgroupD3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
SSulfur
S PyrrhotiteFe7S8
S Pentlandite(FexNiy)Σ9S8
S ChalcopyriteCuFeS2
S CubaniteCuFe2S3
S PyriteFeS2
S Mackinawite(Fe,Ni)9S8
S Valleriite(Fe2+,Cu)4(Mg,Al)3S4(OH,O)6
S MarcasiteFeS2
S ViolariteFe2+Ni23+S4
CaCalcium
Ca Magnesio-hornblende☐{Ca2}{Mg4Al}(AlSi7O22)(OH)2
Ca DiopsideCaMgSi2O6
Ca Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
MnManganese
Mn Serpentine SubgroupD3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
FeIron
Fe PyrrhotiteFe7S8
Fe Pentlandite(FexNiy)Σ9S8
Fe ChalcopyriteCuFeS2
Fe CubaniteCuFe2S3
Fe MagnetiteFe2+Fe23+O4
Fe Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Fe PyriteFeS2
Fe Mackinawite(Fe,Ni)9S8
Fe Valleriite(Fe2+,Cu)4(Mg,Al)3S4(OH,O)6
Fe MarcasiteFeS2
Fe ViolariteFe2+Ni23+S4
Fe Serpentine SubgroupD3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
NiNickel
Ni Pentlandite(FexNiy)Σ9S8
Ni Mackinawite(Fe,Ni)9S8
Ni ViolariteFe2+Ni23+S4
Ni Melonite (var: Palladian Melonite)NiTe2
Ni Serpentine SubgroupD3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
Ni MeloniteNiTe2
CuCopper
Cu ChalcopyriteCuFeS2
Cu ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
Cu CubaniteCuFe2S3
Cu MalachiteCu2(CO3)(OH)2
Cu Valleriite(Fe2+,Cu)4(Mg,Al)3S4(OH,O)6
ZnZinc
Zn Serpentine SubgroupD3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
PdPalladium
Pd Merenskyite(Pd,Pt)(Te,Bi)2
Pd MicheneritePdBiTe
AgSilver
Ag Electrum(Au, Ag)
Ag HessiteAg2Te
TeTellurium
Te Melonite (var: Palladian Melonite)NiTe2
Te HessiteAg2Te
Te Merenskyite(Pd,Pt)(Te,Bi)2
Te MicheneritePdBiTe
Te MeloniteNiTe2
AuGold
Au Electrum(Au, Ag)
Au GoldAu
BiBismuth
Bi MicheneritePdBiTe

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

Neoproterozoic - Ectasian
541 - 1400 Ma



ID: 3184605
Mesoproterozoic-Neoproterozoic volcanic and intrusive rocks

Age: Proterozoic (541 - 1400 Ma)

Lithology: Mafic-intermediate undivided volcanic 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]

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]

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)
Helmy, H.M. and Mogessie, A. (2001) Gabbro Akarem, Eastern Desert, Egypt: Cu-Ni-PGE mineralization in a concentrically zoned mafic-ultramafic complex. Mineralium Deposita, 36, 58-71.
Helmy, H.M. (2005) Melonite group minerals and other tellurides from three Cu–Ni–PGE prospects, Eastern Desert, Egypt. Ore Geology Reviews, 26(3-4), 305-324.


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