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Sivrihisar Massif, Eskişehir Province, Turkeyi
Regional Level Types
Sivrihisar MassifMassif
Eskişehir ProvinceProvince
TurkeyCountry

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PhotosMapsSearch
03439210017272023772953.jpg
Lawsonite, etc.

Sivrihisar Massif, Eskişehir Province, Turkey
01735130017272060168182.jpg
Lawsonite, etc.

Sivrihisar Massif, Eskişehir Province, Turkey
01674180017272023795922.jpg
Lawsonite, etc.

Sivrihisar Massif, Eskişehir Province, Turkey
03439210017272023772953.jpg
Lawsonite, etc.

Sivrihisar Massif, Eskişehir Province, Turkey
01735130017272060168182.jpg
Lawsonite, etc.

Sivrihisar Massif, Eskişehir Province, Turkey
01674180017272023795922.jpg
Lawsonite, etc.

Sivrihisar Massif, Eskişehir Province, Turkey
03439210017272023772953.jpg
Lawsonite, etc.

Sivrihisar Massif, Eskişehir Province, Turkey
01735130017272060168182.jpg
Lawsonite, etc.

Sivrihisar Massif, Eskişehir Province, Turkey
Latitude & Longitude (WGS84):
39° 27' North , 31° 34' East
Latitude & Longitude (decimal):
39.45000,31.56667
GRN:
N27E18
Type:
Massif
Köppen climate type:
Csa : Hot-summer Mediterranean climate
Mindat Locality ID:
29807
Long-form identifier:
mindat:1:2:29807:9
GUID (UUID V4):
0


The Sivrihisar Massif is comprised of blueschist and eclogite facies metasedimentary and metabasaltic rocks. Abundant metre- to centimetre-scale eclogite pods occur in blueschist facies metabasalt, marble, and quartz-rich rocks. Eclogites and blueschists have similar bulk composition, but record different P-T conditions: ∼26 kbar, 500°C (lawsonite eclogite); 18 kbar, 600°C (epidote eclogite); 12 kbar, 380°C (lawsonite blueschist); and 15-16 kbar, 480-500°C (lawsonite-epidote blueschist). Pressures for the Sivrihisar lawsonite eclogite are among the highest reported for this rock type, which is rarely exposed at the Earth's surface. Some rocks were metamorphosed entirely within the lawsonite stability field.

Regionally metamorphosed, muscovite-bearing quartzites contain coexisting andalusite, kyanite, and sillimanite. Textural relations and relative deformation features among the three polymorphs suggest the crystallization sequence andalusite-kyanite-sillimanite. The stable coexistence of staurolite + sillimanite at peak metamorphic conditions suggests a maximum pressure of 5.5 kbar. The three polymorphs grew sequentially along a clockwise P-T path that looped around the Al2SiO5 triple point during the incipient subduction of a continental margin sequence.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List


13 valid minerals.

Detailed Mineral List:

ⓘ Andalusite
Formula: Al2(SiO4)O
ⓘ Chloritoid
Formula: Fe2+Al2O(SiO4)(OH)2
ⓘ Epidote
Formula: (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
ⓘ 'Garnet Group'
Formula: X3Z2(SiO4)3
ⓘ Glaucophane
Formula: ◻[Na2][Mg3Al2]Si8O22(OH)2
ⓘ Jadeite
Formula: Na(Al,Fe3+)Si2O6
ⓘ Kyanite
Formula: Al2(SiO4)O
ⓘ Lawsonite
Formula: CaAl2(Si2O7)(OH)2 · H2O
ⓘ Muscovite
Formula: KAl2(AlSi3O10)(OH)2
ⓘ Muscovite var. Phengite
Formula: KAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2
ⓘ Omphacite
Formula: (NaaCabFe2+cMgd)(AleFe3+fFe2+gMgh)Si2O6
ⓘ Quartz
Formula: SiO2
ⓘ Rutile
Formula: TiO2
ⓘ Sillimanite
Formula: Al2(SiO4)O
ⓘ Staurolite
Formula: Fe2+2Al9Si4O23(OH)

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
ⓘQuartz4.DA.05SiO2
ⓘRutile4.DB.05TiO2
Group 9 - Silicates
ⓘSillimanite9.AF.05Al2(SiO4)O
ⓘAndalusite9.AF.10Al2(SiO4)O
ⓘKyanite9.AF.15Al2(SiO4)O
ⓘStaurolite9.AF.30Fe2+2Al9Si4O23(OH)
ⓘChloritoid9.AF.85Fe2+Al2O(SiO4)(OH)2
ⓘLawsonite9.BE.05CaAl2(Si2O7)(OH)2 · H2O
ⓘEpidote9.BG.05a(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
ⓘOmphacite9.DA.20(NaaCabFe2+cMgd)(AleFe3+fFe2+gMgh)Si2O6
ⓘJadeite9.DA.25Na(Al,Fe3+)Si2O6
ⓘ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
Unclassified
ⓘ'Garnet Group'-X3Z2(SiO4)3

List of minerals for each chemical element

HHydrogen
Hⓘ ChloritoidFe2+Al2O(SiO4)(OH)2
Hⓘ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Hⓘ Glaucophane◻[Na2][Mg3Al2]Si8O22(OH)2
Hⓘ LawsoniteCaAl2(Si2O7)(OH)2 · H2O
Hⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Hⓘ Muscovite var. PhengiteKAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2
Hⓘ StauroliteFe22+Al9Si4O23(OH)
OOxygen
Oⓘ AndalusiteAl2(SiO4)O
Oⓘ ChloritoidFe2+Al2O(SiO4)(OH)2
Oⓘ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Oⓘ Glaucophane◻[Na2][Mg3Al2]Si8O22(OH)2
Oⓘ JadeiteNa(Al,Fe3+)Si2O6
Oⓘ KyaniteAl2(SiO4)O
Oⓘ LawsoniteCaAl2(Si2O7)(OH)2 · H2O
Oⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Oⓘ Omphacite(NaaCabFec2+Mgd)(AleFef3+Feg2+Mgh)Si2O6
Oⓘ Muscovite var. PhengiteKAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2
Oⓘ QuartzSiO2
Oⓘ RutileTiO2
Oⓘ SillimaniteAl2(SiO4)O
Oⓘ StauroliteFe22+Al9Si4O23(OH)
Oⓘ Garnet GroupX3Z2(SiO4)3
NaSodium
Naⓘ Glaucophane◻[Na2][Mg3Al2]Si8O22(OH)2
Naⓘ JadeiteNa(Al,Fe3+)Si2O6
Naⓘ Omphacite(NaaCabFec2+Mgd)(AleFef3+Feg2+Mgh)Si2O6
MgMagnesium
Mgⓘ Glaucophane◻[Na2][Mg3Al2]Si8O22(OH)2
Mgⓘ Omphacite(NaaCabFec2+Mgd)(AleFef3+Feg2+Mgh)Si2O6
Mgⓘ Muscovite var. PhengiteKAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2
AlAluminium
Alⓘ AndalusiteAl2(SiO4)O
Alⓘ ChloritoidFe2+Al2O(SiO4)(OH)2
Alⓘ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Alⓘ Glaucophane◻[Na2][Mg3Al2]Si8O22(OH)2
Alⓘ JadeiteNa(Al,Fe3+)Si2O6
Alⓘ KyaniteAl2(SiO4)O
Alⓘ LawsoniteCaAl2(Si2O7)(OH)2 · H2O
Alⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Alⓘ Omphacite(NaaCabFec2+Mgd)(AleFef3+Feg2+Mgh)Si2O6
Alⓘ Muscovite var. PhengiteKAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2
Alⓘ SillimaniteAl2(SiO4)O
Alⓘ StauroliteFe22+Al9Si4O23(OH)
SiSilicon
Siⓘ AndalusiteAl2(SiO4)O
Siⓘ ChloritoidFe2+Al2O(SiO4)(OH)2
Siⓘ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Siⓘ Glaucophane◻[Na2][Mg3Al2]Si8O22(OH)2
Siⓘ JadeiteNa(Al,Fe3+)Si2O6
Siⓘ KyaniteAl2(SiO4)O
Siⓘ LawsoniteCaAl2(Si2O7)(OH)2 · H2O
Siⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Siⓘ Omphacite(NaaCabFec2+Mgd)(AleFef3+Feg2+Mgh)Si2O6
Siⓘ Muscovite var. PhengiteKAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2
Siⓘ QuartzSiO2
Siⓘ SillimaniteAl2(SiO4)O
Siⓘ StauroliteFe22+Al9Si4O23(OH)
Siⓘ Garnet GroupX3Z2(SiO4)3
KPotassium
Kⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Kⓘ Muscovite var. PhengiteKAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2
CaCalcium
Caⓘ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Caⓘ LawsoniteCaAl2(Si2O7)(OH)2 · H2O
Caⓘ Omphacite(NaaCabFec2+Mgd)(AleFef3+Feg2+Mgh)Si2O6
TiTitanium
Tiⓘ RutileTiO2
FeIron
Feⓘ ChloritoidFe2+Al2O(SiO4)(OH)2
Feⓘ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Feⓘ JadeiteNa(Al,Fe3+)Si2O6
Feⓘ Omphacite(NaaCabFec2+Mgd)(AleFef3+Feg2+Mgh)Si2O6
Feⓘ Muscovite var. PhengiteKAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2
Feⓘ StauroliteFe22+Al9Si4O23(OH)

Other Regions, Features and Areas containing this locality

Anatolia PlateTectonic Plate
AsiaContinent
Eurasian Plate
Turkey

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

Okay, Aral I. (1997) Jadeite–K-feldspar rocks and jadeitites from northwest Turkey. Mineralogical Magazine, 61 (409) 835-843 doi:10.1180/minmag.1997.061.409.06
Whitney, Donna L. (2002) Coexisting andalusite, kyanite, and sillimanite: Sequential formation of three Al2SiO5 polymorphs during progressive metamorphism near the triple point, Sivrihisar, Turkey. American Mineralogist, 87 (4). 405-416 doi:10.2138/am-2002-0404
Davis, P.B., Whitney, D.L. (2006) Petrogenesis of lawsonite and epidote eclogite and blueschist, Sivrihisar Massif, Turkey. Journal of Metamorphic Geology, 24(9), 823-849.
Çetinkaplan, M., Candan, O., Oberhänsli, R., Bousquet, R. (2007) Pressure–temperature evolution of lawsonite eclogite in Sivrihisar, Tavşanlı Zone, Turkey. Lithos, 104(1-4), 12-32.
rruff.info (n.d.) https://rruff.info/doclib/MinMag/Volume_61/61-409-835.pdf
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