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Granophyre outcrops, Alid volcanic center, Semenawi Keyih Bahri Region (Northern Red Sea Region), Eritreai
Regional Level Types
Granophyre outcropsGroup of Outcrops
Alid volcanic center- not defined -
Semenawi Keyih Bahri Region (Northern Red Sea Region)Region
EritreaCountry

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Key
Lock Map
Location is approximate, estimate based on other nearby localities.
 
Latitude & Longitude (WGS84): 14° North , 39° East (est.)
Margin of Error:~1km
Locality type:Group of Outcrops
Köppen climate type:BSh : Hot semi-arid (steppe) climate


Granophyre blocks within late-Pleistocene pyroclastic (pyroxene rhyolite pumice) tephra flow deposits.
Summit collapse basin between Darere and Ghinda.

Regions containing this locality

African PlateTectonic Plate

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


13 valid minerals.

Detailed Mineral List:

Annite
Formula: KFe2+3(AlSi3O10)(OH)2
Reference: Journal of Petrology, Vol. 38, Nb 12, 1997, pp. 1707-1721.
'Anorthoclase'
Formula: (Na,K)AlSi3O8
Reference: Journal of Petrology, Vol. 38, Nb 12, 1997, pp. 1707-1721.
'Apatite'
Reference: Journal of Petrology, Vol. 38, Nb 12, 1997, pp. 1707-1721.
Augite
Formula: (CaxMgyFez)(Mgy1Fez1)Si2O6
Description: Ferroaugite.
Reference: Journal of Petrology, Vol. 38, Nb 12, 1997, pp. 1707-1721.
'Biotite'
Reference: Journal of Petrology, Vol. 38, Nb 12, 1997, pp. 1707-1721.
Chevkinite-(Ce)
Formula: (Ce,La,Ca,Th)4(Fe2+,Mg)(Fe2+,Ti,Fe3+)2(Ti,Fe3+)2(Si2O7)2O8
Reference: Journal of Petrology, Vol. 38, Nb 12, 1997, pp. 1707-1721.
'Chlorite Group'
Description: In miarolitic cavities.
Reference: Journal of Petrology, Vol. 38, Nb 12, 1997, pp. 1707-1721.
Diopside
Formula: CaMgSi2O6
Description: Ferrosalite.
Reference: Journal of Petrology, Vol. 38, Nb 12, 1997, pp. 1707-1721.
Fayalite
Formula: Fe2+2SiO4
Description: In pyroxene rhyolite lava of east flank of Alid Mountain.
Reference: Journal of Petrology, Vol. 38, Nb 12, 1997, pp. 1707-1721.
Fluorite
Formula: CaF2
Reference: Journal of Petrology, Vol. 38, Nb 12, 1997, pp. 1707-1721.
Hedenbergite
Formula: CaFe2+Si2O6
Reference: Journal of Petrology, Vol. 38, Nb 12, 1997, pp. 1707-1721.
Magnetite
Formula: Fe2+Fe3+2O4
Reference: Journal of Petrology, Vol. 38, Nb 12, 1997, pp. 1707-1721.
Phlogopite
Formula: KMg3(AlSi3O10)(OH)2
Reference: Journal of Petrology, Vol. 38, Nb 12, 1997, pp. 1707-1721.
Pyrrhotite
Formula: Fe7S8
Reference: Journal of Petrology, Vol. 38, Nb 12, 1997, pp. 1707-1721.
Quartz
Formula: SiO2
Reference: Journal of Petrology, Vol. 38, Nb 12, 1997, pp. 1707-1721.
Sanidine
Formula: K(AlSi3O8)
Reference: Journal of Petrology, Vol. 38, Nb 12, 1997, pp. 1707-1721.
Zircon
Formula: Zr(SiO4)
Reference: Journal of Petrology, Vol. 38, Nb 12, 1997, pp. 1707-1721.

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
Pyrrhotite2.CC.10Fe7S8
Group 3 - Halides
Fluorite3.AB.25CaF2
Group 4 - Oxides and Hydroxides
Magnetite4.BB.05Fe2+Fe3+2O4
Quartz4.DA.05SiO2
Group 9 - Silicates
Annite9.EC.20KFe2+3(AlSi3O10)(OH)2
'Anorthoclase'9.FA.30(Na,K)AlSi3O8
Augite9.DA.15(CaxMgyFez)(Mgy1Fez1)Si2O6
Chevkinite-(Ce)9.BE.70(Ce,La,Ca,Th)4(Fe2+,Mg)(Fe2+,Ti,Fe3+)2(Ti,Fe3+)2(Si2O7)2O8
Diopside9.DA.15CaMgSi2O6
Fayalite9.AC.05Fe2+2SiO4
Hedenbergite9.DA.15CaFe2+Si2O6
Phlogopite9.EC.20KMg3(AlSi3O10)(OH)2
Sanidine9.FA.30K(AlSi3O8)
Zircon9.AD.30Zr(SiO4)
Unclassified Minerals, Rocks, etc.
'Apatite'-
'Biotite'-
'Chlorite Group'-

List of minerals arranged by Dana 8th Edition classification

Group 2 - SULFIDES
AmXp, with m:p = 1:1
Pyrrhotite2.8.10.1Fe7S8
Group 7 - MULTIPLE OXIDES
AB2X4
Magnetite7.2.2.3Fe2+Fe3+2O4
Group 9 - NORMAL HALIDES
AX2
Fluorite9.2.1.1CaF2
Group 51 - NESOSILICATES Insular SiO4 Groups Only
Insular SiO4 Groups Only with all cations in octahedral [6] coordination
Fayalite51.3.1.1Fe2+2SiO4
Insular SiO4 Groups Only with cations in >[6] coordination
Zircon51.5.2.1Zr(SiO4)
Group 56 - SOROSILICATES Si2O7 Groups, With Additional O, OH, F and H2O
Si2O7 Groups and O, OH, F, and H2O with cations in [4] and/or >[4] coordination
Chevkinite-(Ce)56.2.8.1(Ce,La,Ca,Th)4(Fe2+,Mg)(Fe2+,Ti,Fe3+)2(Ti,Fe3+)2(Si2O7)2O8
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
Hedenbergite65.1.3a.2CaFe2+Si2O6
Group 71 - PHYLLOSILICATES Sheets of Six-Membered Rings
Sheets of 6-membered rings with 2:1 layers
Annite71.2.2b.3KFe2+3(AlSi3O10)(OH)2
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 76 - TECTOSILICATES Al-Si Framework
Al-Si Framework with Al-Si frameworks
'Anorthoclase'76.1.1.6(Na,K)AlSi3O8
Sanidine76.1.1.2K(AlSi3O8)
Unclassified Minerals, Mixtures, etc.
'Apatite'-
'Biotite'-
'Chlorite Group'-

List of minerals for each chemical element

HHydrogen
H AnniteKFe32+(AlSi3O10)(OH)2
H PhlogopiteKMg3(AlSi3O10)(OH)2
OOxygen
O MagnetiteFe2+Fe23+O4
O ZirconZr(SiO4)
O FayaliteFe22+SiO4
O Anorthoclase(Na,K)AlSi3O8
O SanidineK(AlSi3O8)
O HedenbergiteCaFe2+Si2O6
O Chevkinite-(Ce)(Ce,La,Ca,Th)4(Fe2+,Mg)(Fe2+,Ti,Fe3+)2(Ti,Fe3+)2(Si2O7)2O8
O AnniteKFe32+(AlSi3O10)(OH)2
O PhlogopiteKMg3(AlSi3O10)(OH)2
O QuartzSiO2
O DiopsideCaMgSi2O6
O Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
FFluorine
F FluoriteCaF2
NaSodium
Na Anorthoclase(Na,K)AlSi3O8
MgMagnesium
Mg Chevkinite-(Ce)(Ce,La,Ca,Th)4(Fe2+,Mg)(Fe2+,Ti,Fe3+)2(Ti,Fe3+)2(Si2O7)2O8
Mg PhlogopiteKMg3(AlSi3O10)(OH)2
Mg DiopsideCaMgSi2O6
Mg Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
AlAluminium
Al Anorthoclase(Na,K)AlSi3O8
Al SanidineK(AlSi3O8)
Al AnniteKFe32+(AlSi3O10)(OH)2
Al PhlogopiteKMg3(AlSi3O10)(OH)2
SiSilicon
Si ZirconZr(SiO4)
Si FayaliteFe22+SiO4
Si Anorthoclase(Na,K)AlSi3O8
Si SanidineK(AlSi3O8)
Si HedenbergiteCaFe2+Si2O6
Si Chevkinite-(Ce)(Ce,La,Ca,Th)4(Fe2+,Mg)(Fe2+,Ti,Fe3+)2(Ti,Fe3+)2(Si2O7)2O8
Si AnniteKFe32+(AlSi3O10)(OH)2
Si PhlogopiteKMg3(AlSi3O10)(OH)2
Si QuartzSiO2
Si DiopsideCaMgSi2O6
Si Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
SSulfur
S PyrrhotiteFe7S8
KPotassium
K Anorthoclase(Na,K)AlSi3O8
K SanidineK(AlSi3O8)
K AnniteKFe32+(AlSi3O10)(OH)2
K PhlogopiteKMg3(AlSi3O10)(OH)2
CaCalcium
Ca HedenbergiteCaFe2+Si2O6
Ca FluoriteCaF2
Ca Chevkinite-(Ce)(Ce,La,Ca,Th)4(Fe2+,Mg)(Fe2+,Ti,Fe3+)2(Ti,Fe3+)2(Si2O7)2O8
Ca DiopsideCaMgSi2O6
Ca Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
TiTitanium
Ti Chevkinite-(Ce)(Ce,La,Ca,Th)4(Fe2+,Mg)(Fe2+,Ti,Fe3+)2(Ti,Fe3+)2(Si2O7)2O8
FeIron
Fe MagnetiteFe2+Fe23+O4
Fe PyrrhotiteFe7S8
Fe FayaliteFe22+SiO4
Fe HedenbergiteCaFe2+Si2O6
Fe Chevkinite-(Ce)(Ce,La,Ca,Th)4(Fe2+,Mg)(Fe2+,Ti,Fe3+)2(Ti,Fe3+)2(Si2O7)2O8
Fe AnniteKFe32+(AlSi3O10)(OH)2
Fe Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
ZrZirconium
Zr ZirconZr(SiO4)
LaLanthanum
La Chevkinite-(Ce)(Ce,La,Ca,Th)4(Fe2+,Mg)(Fe2+,Ti,Fe3+)2(Ti,Fe3+)2(Si2O7)2O8
CeCerium
Ce Chevkinite-(Ce)(Ce,La,Ca,Th)4(Fe2+,Mg)(Fe2+,Ti,Fe3+)2(Ti,Fe3+)2(Si2O7)2O8
ThThorium
Th Chevkinite-(Ce)(Ce,La,Ca,Th)4(Fe2+,Mg)(Fe2+,Ti,Fe3+)2(Ti,Fe3+)2(Si2O7)2O8

References

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Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Journal of Petrology (1997) 38, 1707-1721.

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