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As Sifah, Saih Hatat, Muscat Governorate, Omani
Regional Level Types
As SifahTown
Saih HatatPlains
Muscat GovernorateGovernorate
OmanCountry

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Latitude & Longitude (WGS84):
23° 25' 58'' North , 58° 46' 29'' East
Latitude & Longitude (decimal):
23.43292,58.77485
GRN:
N16E39
Type:
Town
Köppen climate type:
BWh : Hot deserts climate
Mindat Locality ID:
45852
Long-form identifier:
mindat:1:2:45852:9
GUID (UUID V4):
0


The Saih Hatat area is a tectonic window that exposes basement and continental shelf units structurally underlying the Semail ophiolite. Saih Hatat is subdivided into three thrust-bounded tectonometamorphic regions each characterized by a set of lithotectonic units metamorphosed under different P–T conditions.

As-Sifah consists of calcareous schists interbedded with quartz mica schists, mafic metavolcanics and minor lenses of Fe-rich metapelites, all of Permian protoliths. These units were subjected to high P–T metamorphism characteristic of the blueschist and eclogite facies, either before or during the emplacement of the ophiolite.

The area around As Sifah contains three metamorphic zones, Zone A is characterized by crossite epidote schists interlayered with greenschists; zone B by garnet glaucophane schists (garnet blueschists); and zone C by eclogites interlayered with garnet blueschists and epidote amphibolites.

The mineralogy listed is from two outcrops in zone C in mafic rocks a few km inland from As-Sifah.

The amphibole identifications are based on electron microprobe analyses by El-Shazly et al. (1997) that are normalized and named in accordance with the 2012 amphibole nomenclature, using the procedures described in Locock (2014). Due to nomenclature changes, the amphibole names may differ from the originally published names.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List


16 valid minerals.

Rock Types Recorded


Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

ⓘ Actinolite
Formula: ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Description: Occurs in epidote-amphibolites
ⓘ Albite
Formula: Na(AlSi3O8)
ⓘ Almandine
Formula: Fe2+3Al2(SiO4)3
Description: Microprobe analyses by El-Shazly et al show from 59-74% almandine component
ⓘ 'Biotite'
Formula: K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
ⓘ Calcite
Formula: CaCO3
References:
Adam Stephens CollectionIdentified by Adam Stephens: Visual Identification
ⓘ 'Chlorite Group'
ⓘ 'Clinopyroxene Subgroup'
ⓘ Epidote
Formula: (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
ⓘ Ferri-katophorite
Formula: Na(CaNa)(Mg4Fe3+)(AlSi7O22)(OH)2
Description: Occurs in epidote-amphibolites
ⓘ Ferri-winchite
Formula: ◻(NaCa)(Mg4Fe3+)Si8O22(OH)2
Description: Occurs in epidote-amphibolites and clinopyroxene rich rocks
ⓘ 'Ferro-ferri-winchite'
Formula: ◻[CaNa][Fe2+4(Fe3+,Al)]Si8O22(OH)2
Description: Occurs in garnet blueschists
ⓘ Ferro-glaucophane
Formula: ◻[Na2][Fe2+3Al2]Si8O22(OH)2
Description: Occurs in eclogite
ⓘ Ferro-katophorite
Formula: {Na}{CaNa}{Fe2+4Al}[(AlSi7)O22](OH)2
Description: occurs in eclogite
ⓘ 'Garnet Group'
Formula: X3Z2(SiO4)3
ⓘ Glaucophane
Formula: ◻[Na2][Mg3Al2]Si8O22(OH)2
Description: Occurs in eclogite, garnet blueschist and epidote amphibolite
ⓘ Hematite
Formula: Fe2O3
References:
Adam Stephens CollectionIdentified by Adam Stephens: Visual Identification
ⓘ Magnesio-ferri-hornblende
Formula: ◻Ca2(Mg4Fe3+)[(Si7Al)O22](OH)2
Description: occurs in epidote amphibolites
ⓘ Muscovite
Formula: KAl2(AlSi3O10)(OH)2
ⓘ Muscovite var. Phengite
Formula: KAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2
ⓘ Quartz
Formula: SiO2
References:
Adam Stephens CollectionIdentified by Adam Stephens: Visual Identification
ⓘ Rutile
Formula: TiO2
ⓘ Winchite
Formula: ◻{CaNa}{Mg4Al}(Si8O22)(OH)2
Description: occurs in eclogite and epidote amphibolite

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
ⓘHematite4.CB.05Fe2O3
ⓘQuartz4.DA.05SiO2
ⓘRutile4.DB.05TiO2
Group 5 - Nitrates and Carbonates
ⓘCalcite5.AB.05CaCO3
Group 9 - Silicates
ⓘAlmandine9.AD.25Fe2+3Al2(SiO4)3
ⓘEpidote9.BG.05a(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
ⓘActinolite9.DE.10◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
ⓘMagnesio-ferri-hornblende9.DE.10◻Ca2(Mg4Fe3+)[(Si7Al)O22](OH)2
ⓘ'Ferro-ferri-winchite'9.DE.20◻[CaNa][Fe2+4(Fe3+,Al)]Si8O22(OH)2
ⓘFerro-katophorite9.DE.20{Na}{CaNa}{Fe2+4Al}[(AlSi7)O22](OH)2
ⓘFerri-katophorite9.DE.20Na(CaNa)(Mg4Fe3+)(AlSi7O22)(OH)2
ⓘWinchite9.DE.20◻{CaNa}{Mg4Al}(Si8O22)(OH)2
ⓘFerri-winchite9.DE.20◻(NaCa)(Mg4Fe3+)Si8O22(OH)2
ⓘFerro-glaucophane9.DE.25◻[Na2][Fe2+3Al2]Si8O22(OH)2
ⓘGlaucophane9.DE.25◻[Na2][Mg3Al2]Si8O22(OH)2
ⓘMuscovite9.EC.15KAl2(AlSi3O10)(OH)2
ⓘvar. Phengite9.EC.15KAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2
ⓘAlbite9.FA.35Na(AlSi3O8)
Unclassified
ⓘ'Biotite'-K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
ⓘ'Chlorite Group'-
ⓘ'Clinopyroxene Subgroup'-
ⓘ'Garnet Group'-X3Z2(SiO4)3

List of minerals for each chemical element

HHydrogen
Hⓘ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Hⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Hⓘ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Hⓘ Ferro-ferri-winchite◻[CaNa][Fe42+(Fe3+,Al)]Si8O22(OH)2
Hⓘ Ferro-glaucophane◻[Na2][Fe32+Al2]Si8O22(OH)2
Hⓘ Glaucophane◻[Na2][Mg3Al2]Si8O22(OH)2
Hⓘ Ferro-katophorite{Na}{CaNa}{Fe42+Al}[(AlSi7)O22](OH)2
Hⓘ Ferri-katophoriteNa(CaNa)(Mg4Fe3+)(AlSi7O22)(OH)2
Hⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Hⓘ Muscovite var. PhengiteKAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2
Hⓘ Winchite◻{CaNa}{Mg4Al}(Si8O22)(OH)2
Hⓘ Ferri-winchite◻(NaCa)(Mg4Fe3+)Si8O22(OH)2
Hⓘ Magnesio-ferri-hornblende◻Ca2(Mg4Fe3+)[(Si7Al)O22](OH)2
CCarbon
Cⓘ CalciteCaCO3
OOxygen
Oⓘ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Oⓘ AlbiteNa(AlSi3O8)
Oⓘ AlmandineFe32+Al2(SiO4)3
Oⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Oⓘ CalciteCaCO3
Oⓘ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Oⓘ Ferro-ferri-winchite◻[CaNa][Fe42+(Fe3+,Al)]Si8O22(OH)2
Oⓘ Ferro-glaucophane◻[Na2][Fe32+Al2]Si8O22(OH)2
Oⓘ Glaucophane◻[Na2][Mg3Al2]Si8O22(OH)2
Oⓘ HematiteFe2O3
Oⓘ Ferro-katophorite{Na}{CaNa}{Fe42+Al}[(AlSi7)O22](OH)2
Oⓘ Ferri-katophoriteNa(CaNa)(Mg4Fe3+)(AlSi7O22)(OH)2
Oⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Oⓘ Muscovite var. PhengiteKAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2
Oⓘ QuartzSiO2
Oⓘ RutileTiO2
Oⓘ Winchite◻{CaNa}{Mg4Al}(Si8O22)(OH)2
Oⓘ Garnet GroupX3Z2(SiO4)3
Oⓘ Ferri-winchite◻(NaCa)(Mg4Fe3+)Si8O22(OH)2
Oⓘ Magnesio-ferri-hornblende◻Ca2(Mg4Fe3+)[(Si7Al)O22](OH)2
FFluorine
Fⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
NaSodium
Naⓘ AlbiteNa(AlSi3O8)
Naⓘ Ferro-ferri-winchite◻[CaNa][Fe42+(Fe3+,Al)]Si8O22(OH)2
Naⓘ Ferro-glaucophane◻[Na2][Fe32+Al2]Si8O22(OH)2
Naⓘ Glaucophane◻[Na2][Mg3Al2]Si8O22(OH)2
Naⓘ Ferro-katophorite{Na}{CaNa}{Fe42+Al}[(AlSi7)O22](OH)2
Naⓘ Ferri-katophoriteNa(CaNa)(Mg4Fe3+)(AlSi7O22)(OH)2
Naⓘ Winchite◻{CaNa}{Mg4Al}(Si8O22)(OH)2
Naⓘ Ferri-winchite◻(NaCa)(Mg4Fe3+)Si8O22(OH)2
MgMagnesium
Mgⓘ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Mgⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Mgⓘ Glaucophane◻[Na2][Mg3Al2]Si8O22(OH)2
Mgⓘ Ferri-katophoriteNa(CaNa)(Mg4Fe3+)(AlSi7O22)(OH)2
Mgⓘ Muscovite var. PhengiteKAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2
Mgⓘ Winchite◻{CaNa}{Mg4Al}(Si8O22)(OH)2
Mgⓘ Ferri-winchite◻(NaCa)(Mg4Fe3+)Si8O22(OH)2
Mgⓘ Magnesio-ferri-hornblende◻Ca2(Mg4Fe3+)[(Si7Al)O22](OH)2
AlAluminium
Alⓘ AlbiteNa(AlSi3O8)
Alⓘ AlmandineFe32+Al2(SiO4)3
Alⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Alⓘ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Alⓘ Ferro-ferri-winchite◻[CaNa][Fe42+(Fe3+,Al)]Si8O22(OH)2
Alⓘ Ferro-glaucophane◻[Na2][Fe32+Al2]Si8O22(OH)2
Alⓘ Glaucophane◻[Na2][Mg3Al2]Si8O22(OH)2
Alⓘ Ferro-katophorite{Na}{CaNa}{Fe42+Al}[(AlSi7)O22](OH)2
Alⓘ Ferri-katophoriteNa(CaNa)(Mg4Fe3+)(AlSi7O22)(OH)2
Alⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Alⓘ Muscovite var. PhengiteKAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2
Alⓘ Winchite◻{CaNa}{Mg4Al}(Si8O22)(OH)2
Alⓘ Magnesio-ferri-hornblende◻Ca2(Mg4Fe3+)[(Si7Al)O22](OH)2
SiSilicon
Siⓘ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Siⓘ AlbiteNa(AlSi3O8)
Siⓘ AlmandineFe32+Al2(SiO4)3
Siⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Siⓘ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Siⓘ Ferro-ferri-winchite◻[CaNa][Fe42+(Fe3+,Al)]Si8O22(OH)2
Siⓘ Ferro-glaucophane◻[Na2][Fe32+Al2]Si8O22(OH)2
Siⓘ Glaucophane◻[Na2][Mg3Al2]Si8O22(OH)2
Siⓘ Ferro-katophorite{Na}{CaNa}{Fe42+Al}[(AlSi7)O22](OH)2
Siⓘ Ferri-katophoriteNa(CaNa)(Mg4Fe3+)(AlSi7O22)(OH)2
Siⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Siⓘ Muscovite var. PhengiteKAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2
Siⓘ QuartzSiO2
Siⓘ Winchite◻{CaNa}{Mg4Al}(Si8O22)(OH)2
Siⓘ Garnet GroupX3Z2(SiO4)3
Siⓘ Ferri-winchite◻(NaCa)(Mg4Fe3+)Si8O22(OH)2
Siⓘ Magnesio-ferri-hornblende◻Ca2(Mg4Fe3+)[(Si7Al)O22](OH)2
KPotassium
Kⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Kⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Kⓘ Muscovite var. PhengiteKAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2
CaCalcium
Caⓘ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Caⓘ CalciteCaCO3
Caⓘ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Caⓘ Ferro-ferri-winchite◻[CaNa][Fe42+(Fe3+,Al)]Si8O22(OH)2
Caⓘ Ferro-katophorite{Na}{CaNa}{Fe42+Al}[(AlSi7)O22](OH)2
Caⓘ Ferri-katophoriteNa(CaNa)(Mg4Fe3+)(AlSi7O22)(OH)2
Caⓘ Winchite◻{CaNa}{Mg4Al}(Si8O22)(OH)2
Caⓘ Ferri-winchite◻(NaCa)(Mg4Fe3+)Si8O22(OH)2
Caⓘ Magnesio-ferri-hornblende◻Ca2(Mg4Fe3+)[(Si7Al)O22](OH)2
TiTitanium
Tiⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Tiⓘ RutileTiO2
FeIron
Feⓘ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Feⓘ AlmandineFe32+Al2(SiO4)3
Feⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Feⓘ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Feⓘ Ferro-ferri-winchite◻[CaNa][Fe42+(Fe3+,Al)]Si8O22(OH)2
Feⓘ Ferro-glaucophane◻[Na2][Fe32+Al2]Si8O22(OH)2
Feⓘ HematiteFe2O3
Feⓘ Ferro-katophorite{Na}{CaNa}{Fe42+Al}[(AlSi7)O22](OH)2
Feⓘ Ferri-katophoriteNa(CaNa)(Mg4Fe3+)(AlSi7O22)(OH)2
Feⓘ Muscovite var. PhengiteKAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2
Feⓘ Ferri-winchite◻(NaCa)(Mg4Fe3+)Si8O22(OH)2
Feⓘ Magnesio-ferri-hornblende◻Ca2(Mg4Fe3+)[(Si7Al)O22](OH)2

Other Regions, Features and Areas containing this locality

Arabian PeninsulaPeninsula
Arabian PlateTectonic Plate
Eurasian 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

El-Shazly, A. K., Worthing, M. A., Liou, J. G. (1997) Interlayered Eclogites, Blueschists and Epidote Amphibolites from NE Oman: a Record of Protolith Compositional Control and Limited Fluid Infiltration. Journal of Petrology, 38 (11) 1461-1487 doi:10.1093/petroj/38.11.1461
Locock, Andrew J. (2014) An Excel spreadsheet to classify chemical analyses of amphiboles following the IMA 2012 recommendations. Computers & Geosciences, 62. 1-11 doi:10.1016/j.cageo.2013.09.011
www.getamap.net (n.d.) http://www.getamap.net/maps/oman/masqat/_assifah/
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