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As Sifah, Saih Hatat, Muscat, Omani
Regional Level Types
As SifahTown
Saih Hatat- not defined -
MuscatGovernorate
OmanCountry

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Latitude & Longitude (WGS84):
23° 25' 58'' North , 58° 46' 29'' East
Latitude & Longitude (decimal):
Locality type:
Köppen climate type:


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 original published names.

Regions containing this locality

Arabian Plate (Arabia Plate; Arab Plate)Tectonic Plate
Arabian PeninsulaPeninsula

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


12 valid minerals.

Detailed Mineral List:

Actinolite
Formula: ☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
Description: Occurs in epidote-amphibolites
Reference: El-Shazly,A. K., Worthing, M. A., and 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, Vol 38, No 11, pp 1461-1487.
Albite
Formula: Na(AlSi3O8)
Reference: Jour.Met.Geo 19:233–248 (2001)
Almandine
Formula: Fe2+3Al2(SiO4)3
Description: Microprobe analyses by El-Shazly et al show from 59-74% almandine component
Reference: El-Shazly,A. K., Worthing, M. A., and 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, Vol 38, No 11, pp 1461-1487.
'Biotite'
Formula: K(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
Reference: Jour.Met.Geo 19:233–248 (2001)
'Chlorite Group'
Reference: Jour.Met.Geo 19:233–248 (2001)
'Clinopyroxene Subgroup'
Reference: " El-Shazly,A. K., Worthing, M. A., and 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, Vol 38, No 11, pp 1461-1487. "
Epidote
Formula: {Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Reference: Jour.Met.Geo 19:233–248 (2001)
Ferri-katophorite
Formula: Na(CaNa)(Mg4Fe3+)(AlSi7O22)(OH)2
Description: Occurs in epidote-amphibolites
Reference: El-Shazly,A. K., Worthing, M. A., and 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, Vol 38, No 11, pp 1461-1487.
Ferri-winchite
Formula: ☐[CaNa][Mg4(Fe3+,Al)]Si8O22(OH)2
Description: Occurs in epidote-amphibolites and clinopyroxene rich rocks
Reference: El-Shazly,A. K., Worthing, M. A., and 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, Vol 38, No 11, pp 1461-1487.
'Ferro-ferri-winchite'
Formula: ☐[CaNa][Fe2+4(Fe3+,Al)]Si8O22(OH)2
Description: Occurs in garnet blueschists
Reference: El-Shazly,A. K., Worthing, M. A., and 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, Vol 38, No 11, pp 1461-1487.
Ferro-glaucophane
Formula: ◻[Na2][Fe2+3Al2]Si8O22(OH)2
Description: Occurs in eclogite
Reference: El-Shazly,A. K., Worthing, M. A., and 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, Vol 38, No 11, pp 1461-1487.
Ferro-katophorite
Formula: {Na}{CaNa}{Fe2+4Al}[(AlSi7)O22](OH)2
Description: occurs in eclogite
Reference: El-Shazly,A. K., Worthing, M. A., and 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, Vol 38, No 11, pp 1461-1487.
'Garnet Group'
Formula: X3Z2(SiO4)3
Reference: Jour.Met.Geo 19:233–248 (2001)
Glaucophane
Formula: ◻[Na2][Mg3Al2]Si8O22(OH)2
Description: Occurs in eclogite, garnet blueschist and epidote amphibolite
Reference: Jour.Met.Geo 19:233–248 (2001) El-Shazly,A. K., Worthing, M. A., and 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, Vol 38, No 11, pp 1461-1487.
'Magnesio-ferri-hornblende'
Formula: ☐{Ca2}{Mg4Fe3+}(AlSi7O22)(OH)2
Description: occurs in epidote amphibolites
Reference: El-Shazly,A. K., Worthing, M. A., and 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, Vol 38, No 11, pp 1461-1487.
Muscovite
Formula: KAl2(AlSi3O10)(OH)2
Reference: Jour.Met.Geo 19:233–248 (2001)
Muscovite var: Phengite
Formula: KAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2
Reference: Jour.Met.Geo 19:233–248 (2001)
Rutile
Formula: TiO2
Reference: Jour.Met.Geo 19:233–248 (2001)
Winchite
Formula: ☐{CaNa}{Mg4Al}(Si8O22)(OH)2
Description: occurs in eclogite and epidote amphibolite
Reference: Jour.Met.Geo 19:233–248 (2001)

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
Rutile4.DB.05TiO2
Group 9 - Silicates
Actinolite9.DE.10☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
Albite9.FA.35Na(AlSi3O8)
Almandine9.AD.25Fe2+3Al2(SiO4)3
Epidote9.BG.05a{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Ferri-katophorite9.DE.20Na(CaNa)(Mg4Fe3+)(AlSi7O22)(OH)2
Ferri-winchite9.DE.20☐[CaNa][Mg4(Fe3+,Al)]Si8O22(OH)2
'Ferro-ferri-winchite'9.DE.20☐[CaNa][Fe2+4(Fe3+,Al)]Si8O22(OH)2
Ferro-glaucophane9.DE.25◻[Na2][Fe2+3Al2]Si8O22(OH)2
Ferro-katophorite9.DE.20{Na}{CaNa}{Fe2+4Al}[(AlSi7)O22](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
Winchite9.DE.20☐{CaNa}{Mg4Al}(Si8O22)(OH)2
Unclassified Minerals, Rocks, etc.
'Biotite'-K(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
'Chlorite Group'-
'Clinopyroxene Subgroup'-
'Garnet Group'-X3Z2(SiO4)3
'Magnesio-ferri-hornblende'-☐{Ca2}{Mg4Fe3+}(AlSi7O22)(OH)2

List of minerals arranged by Dana 8th Edition classification

Group 4 - SIMPLE OXIDES
AX2
Rutile4.4.1.1TiO2
Group 51 - NESOSILICATES Insular SiO4 Groups Only
Insular SiO4 Groups Only with cations in [6] and >[6] coordination
Almandine51.4.3a.2Fe2+3Al2(SiO4)3
Group 58 - SOROSILICATES Insular, Mixed, Single, and Larger Tetrahedral Groups
Insular, Mixed, Single, and Larger Tetrahedral Groups with cations in [6] and higher coordination; single and double groups (n = 1, 2)
Epidote58.2.1a.7{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Group 66 - INOSILICATES Double-Width,Unbranched Chains,(W=2)
Amphiboles - Mg-Fe-Mn-Li subgroup
Glaucophane66.1.3c.1◻[Na2][Mg3Al2]Si8O22(OH)2
Winchite66.1.3b.1☐{CaNa}{Mg4Al}(Si8O22)(OH)2
Group 71 - PHYLLOSILICATES Sheets of Six-Membered Rings
Sheets of 6-membered rings with 2:1 layers
Muscovite71.2.2a.1KAl2(AlSi3O10)(OH)2
Group 76 - TECTOSILICATES Al-Si Framework
Al-Si Framework with Al-Si frameworks
Albite76.1.3.1Na(AlSi3O8)
Unclassified Minerals, Mixtures, etc.
Actinolite-☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
'Biotite'-K(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
'Chlorite Group'-
'Clinopyroxene Subgroup'-
Ferri-katophorite-Na(CaNa)(Mg4Fe3+)(AlSi7O22)(OH)2
Ferri-winchite-☐[CaNa][Mg4(Fe3+,Al)]Si8O22(OH)2
'Ferro-ferri-winchite'-☐[CaNa][Fe2+4(Fe3+,Al)]Si8O22(OH)2
Ferro-glaucophane-◻[Na2][Fe2+3Al2]Si8O22(OH)2
Ferro-katophorite-{Na}{CaNa}{Fe2+4Al}[(AlSi7)O22](OH)2
'Garnet Group'-X3Z2(SiO4)3
'Magnesio-ferri-hornblende'-☐{Ca2}{Mg4Fe3+}(AlSi7O22)(OH)2
Muscovite
var: Phengite
-KAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2

List of minerals for each chemical element

HHydrogen
H Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
H Muscovite (var: Phengite)KAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2
H BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
H Ferro-katophorite{Na}{CaNa}{Fe42+Al}[(AlSi7)O22](OH)2
H Ferri-winchite☐[CaNa][Mg4(Fe3+,Al)]Si8O22(OH)2
H Ferro-ferri-winchite☐[CaNa][Fe42+(Fe3+,Al)]Si8O22(OH)2
H Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
H MuscoviteKAl2(AlSi3O10)(OH)2
H Glaucophane◻[Na2][Mg3Al2]Si8O22(OH)2
H Winchite☐{CaNa}{Mg4Al}(Si8O22)(OH)2
H Ferro-glaucophane◻[Na2][Fe32+Al2]Si8O22(OH)2
H Magnesio-ferri-hornblende☐{Ca2}{Mg4Fe3+}(AlSi7O22)(OH)2
H Ferri-katophoriteNa(CaNa)(Mg4Fe3+)(AlSi7O22)(OH)2
OOxygen
O Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
O Muscovite (var: Phengite)KAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2
O RutileTiO2
O AlbiteNa(AlSi3O8)
O BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
O Garnet GroupX3Z2(SiO4)3
O Ferro-katophorite{Na}{CaNa}{Fe42+Al}[(AlSi7)O22](OH)2
O Ferri-winchite☐[CaNa][Mg4(Fe3+,Al)]Si8O22(OH)2
O Ferro-ferri-winchite☐[CaNa][Fe42+(Fe3+,Al)]Si8O22(OH)2
O Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
O MuscoviteKAl2(AlSi3O10)(OH)2
O Glaucophane◻[Na2][Mg3Al2]Si8O22(OH)2
O Winchite☐{CaNa}{Mg4Al}(Si8O22)(OH)2
O Ferro-glaucophane◻[Na2][Fe32+Al2]Si8O22(OH)2
O Magnesio-ferri-hornblende☐{Ca2}{Mg4Fe3+}(AlSi7O22)(OH)2
O Ferri-katophoriteNa(CaNa)(Mg4Fe3+)(AlSi7O22)(OH)2
O AlmandineFe32+Al2(SiO4)3
FFluorine
F BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
NaSodium
Na AlbiteNa(AlSi3O8)
Na Ferro-katophorite{Na}{CaNa}{Fe42+Al}[(AlSi7)O22](OH)2
Na Ferri-winchite☐[CaNa][Mg4(Fe3+,Al)]Si8O22(OH)2
Na Ferro-ferri-winchite☐[CaNa][Fe42+(Fe3+,Al)]Si8O22(OH)2
Na Glaucophane◻[Na2][Mg3Al2]Si8O22(OH)2
Na Winchite☐{CaNa}{Mg4Al}(Si8O22)(OH)2
Na Ferro-glaucophane◻[Na2][Fe32+Al2]Si8O22(OH)2
Na Ferri-katophoriteNa(CaNa)(Mg4Fe3+)(AlSi7O22)(OH)2
MgMagnesium
Mg Muscovite (var: Phengite)KAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2
Mg BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
Mg Ferri-winchite☐[CaNa][Mg4(Fe3+,Al)]Si8O22(OH)2
Mg Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
Mg Glaucophane◻[Na2][Mg3Al2]Si8O22(OH)2
Mg Winchite☐{CaNa}{Mg4Al}(Si8O22)(OH)2
Mg Magnesio-ferri-hornblende☐{Ca2}{Mg4Fe3+}(AlSi7O22)(OH)2
Mg Ferri-katophoriteNa(CaNa)(Mg4Fe3+)(AlSi7O22)(OH)2
AlAluminium
Al Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Al Muscovite (var: Phengite)KAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2
Al AlbiteNa(AlSi3O8)
Al BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
Al Ferro-katophorite{Na}{CaNa}{Fe42+Al}[(AlSi7)O22](OH)2
Al Ferri-winchite☐[CaNa][Mg4(Fe3+,Al)]Si8O22(OH)2
Al Ferro-ferri-winchite☐[CaNa][Fe42+(Fe3+,Al)]Si8O22(OH)2
Al MuscoviteKAl2(AlSi3O10)(OH)2
Al Glaucophane◻[Na2][Mg3Al2]Si8O22(OH)2
Al Winchite☐{CaNa}{Mg4Al}(Si8O22)(OH)2
Al Ferro-glaucophane◻[Na2][Fe32+Al2]Si8O22(OH)2
Al Magnesio-ferri-hornblende☐{Ca2}{Mg4Fe3+}(AlSi7O22)(OH)2
Al Ferri-katophoriteNa(CaNa)(Mg4Fe3+)(AlSi7O22)(OH)2
Al AlmandineFe32+Al2(SiO4)3
SiSilicon
Si Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Si Muscovite (var: Phengite)KAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2
Si AlbiteNa(AlSi3O8)
Si BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
Si Garnet GroupX3Z2(SiO4)3
Si Ferro-katophorite{Na}{CaNa}{Fe42+Al}[(AlSi7)O22](OH)2
Si Ferri-winchite☐[CaNa][Mg4(Fe3+,Al)]Si8O22(OH)2
Si Ferro-ferri-winchite☐[CaNa][Fe42+(Fe3+,Al)]Si8O22(OH)2
Si Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
Si MuscoviteKAl2(AlSi3O10)(OH)2
Si Glaucophane◻[Na2][Mg3Al2]Si8O22(OH)2
Si Winchite☐{CaNa}{Mg4Al}(Si8O22)(OH)2
Si Ferro-glaucophane◻[Na2][Fe32+Al2]Si8O22(OH)2
Si Magnesio-ferri-hornblende☐{Ca2}{Mg4Fe3+}(AlSi7O22)(OH)2
Si Ferri-katophoriteNa(CaNa)(Mg4Fe3+)(AlSi7O22)(OH)2
Si AlmandineFe32+Al2(SiO4)3
KPotassium
K Muscovite (var: Phengite)KAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2
K BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
K MuscoviteKAl2(AlSi3O10)(OH)2
CaCalcium
Ca Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Ca Ferro-katophorite{Na}{CaNa}{Fe42+Al}[(AlSi7)O22](OH)2
Ca Ferri-winchite☐[CaNa][Mg4(Fe3+,Al)]Si8O22(OH)2
Ca Ferro-ferri-winchite☐[CaNa][Fe42+(Fe3+,Al)]Si8O22(OH)2
Ca Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
Ca Winchite☐{CaNa}{Mg4Al}(Si8O22)(OH)2
Ca Magnesio-ferri-hornblende☐{Ca2}{Mg4Fe3+}(AlSi7O22)(OH)2
Ca Ferri-katophoriteNa(CaNa)(Mg4Fe3+)(AlSi7O22)(OH)2
TiTitanium
Ti RutileTiO2
FeIron
Fe Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Fe Muscovite (var: Phengite)KAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2
Fe BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
Fe Ferro-katophorite{Na}{CaNa}{Fe42+Al}[(AlSi7)O22](OH)2
Fe Ferri-winchite☐[CaNa][Mg4(Fe3+,Al)]Si8O22(OH)2
Fe Ferro-ferri-winchite☐[CaNa][Fe42+(Fe3+,Al)]Si8O22(OH)2
Fe Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
Fe Ferro-glaucophane◻[Na2][Fe32+Al2]Si8O22(OH)2
Fe Magnesio-ferri-hornblende☐{Ca2}{Mg4Fe3+}(AlSi7O22)(OH)2
Fe Ferri-katophoriteNa(CaNa)(Mg4Fe3+)(AlSi7O22)(OH)2
Fe AlmandineFe32+Al2(SiO4)3

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
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.
Locock, A.J. (2014) An Excel spreadsheet to classify chemical analyses of amphiboles following the IMA 2012 recommendations. Computers & Geosciences, 62, 1-11.


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