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Kûngnât complex, Arsuk Fjord, Sermersooq, Greenlandi
Regional Level Types
Kûngnât complexComplex
Arsuk FjordFjord
SermersooqMunicipality
GreenlandAutonomous Territory

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Latitude & Longitude (WGS84):
61° 13' North , 48° 25' West
Latitude & Longitude (decimal):
61.21667,-48.41667
GRN:
N41W18
Type:
Complex
Age:
1219 ± 16 Ma
Geologic Time:
Ectasian
Reference for age:
Blaxland et al. 1995, cited in Stephenson, D. & Upton, B.J.G. (1982) Ferromagnesian silicates in a differentiated alkaline complex: K
Köppen climate type:
ET : Tundra
Mindat Locality ID:
12035
Long-form identifier:
mindat:1:2:12035:2
GUID (UUID V4):
0
Other/historical names associated with this locality:
Kûngnât Fjeld


The Kûngnât Complex is the westernmost complex in the Gardar Alkaline Province, of 2.5 x 5 km. It consists of two syenite stocks and a narrow ring dyke. The stock in the west contains peralkaline granites, the one in the east syenites, and the ring alkaline gabbro.

Select Mineral List Type

StandardDetailedGalleryStrunzChemical Elements

Detailed Mineral List:

ⓘAegirine
Formula:NaFe3+Si2O6
ⓘ'Amphibole Supergroup'
Formula:AB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
ⓘAnnite
Formula:KFe2+3(AlSi3O10)(OH)2
ⓘ'Apatite'
Formula:Ca5(PO4)3(Cl/F/OH)
ⓘArfvedsonite
Formula:[Na][Na2][Fe2+4Fe3+]Si8O22(OH)2
ⓘAstrophyllite
Formula:K2NaFe2+7Ti2[Si4O12]2O2(OH)4F
ⓘAugite
Formula:(CaxMgyFez)(Mgy1Fez1)Si2O6
ⓘ'Barkevikite'
Description: Discredited, see amphibole
ⓘChalcopyrite
Formula:CuFeS2
ⓘ'Clinopyroxene Subgroup'
ⓘFayalite
Formula:Fe2+2SiO4
ⓘ'Fayalite-Forsterite Series'
ⓘ'Feldspar Group'
ⓘ'Feldspar Group var. Perthite'
ⓘFerro-actinolite
Formula:◻Ca2Fe2+5(Si8O22)(OH)2
ⓘFerro-edenite
Formula:NaCa2Fe2+5(Si7Al)O22(OH)2
ⓘFerro-richterite
Formula:{Na}{CaNa}{Fe2+5}(Si8O22)(OH)2
ⓘHastingsite
Formula:NaCa2(Fe2+4Fe3+)(Si6Al2)O22(OH)2
ⓘHedenbergite
Formula:CaFe2+Si2O6
ⓘ'Iddingsite'
ⓘIlmenite
Formula:Fe2+TiO3
ⓘMagnetite
Formula:Fe2+Fe3+2O4
ⓘPentlandite
Formula:(NixFey)Σ9S8
ⓘPhlogopite
Formula:KMg3(AlSi3O10)(OH)2
ⓘRiebeckite ?
Formula:◻[Na2][Fe2+3Fe3+2]Si8O22(OH)2
Description: only identified optically (see Stephenson & Upton (1982)
ⓘZircon
Formula:Zr(SiO4)

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
ⓘPentlandite2.BB.15(NixFey)Σ9S8
ⓘChalcopyrite2.CB.10aCuFeS2
Group 4 - Oxides and Hydroxides
ⓘMagnetite4.BB.05Fe2+Fe3+2O4
ⓘIlmenite4.CB.05Fe2+TiO3
Group 9 - Silicates
ⓘFayalite9.AC.05Fe2+2SiO4
ⓘZircon9.AD.30Zr(SiO4)
ⓘAugite9.DA.15(CaxMgyFez)(Mgy1Fez1)Si2O6
ⓘHedenbergite9.DA.15CaFe2+Si2O6
ⓘAegirine9.DA.25NaFe3+Si2O6
ⓘAstrophyllite9.DC.05K2NaFe2+7Ti2[Si4O12]2O2(OH)4F
ⓘFerro-actinolite9.DE.10◻Ca2Fe2+5(Si8O22)(OH)2
ⓘFerro-edenite9.DE.15NaCa2Fe2+5(Si7Al)O22(OH)2
ⓘHastingsite9.DE.15NaCa2(Fe2+4Fe3+)(Si6Al2)O22(OH)2
ⓘFerro-richterite9.DE.20{Na}{CaNa}{Fe2+5}(Si8O22)(OH)2
ⓘArfvedsonite9.DE.25[Na][Na2][Fe2+4Fe3+]Si8O22(OH)2
ⓘRiebeckite ?9.DE.25◻[Na2][Fe2+3Fe3+2]Si8O22(OH)2
ⓘAnnite9.EC.20KFe2+3(AlSi3O10)(OH)2
ⓘPhlogopite9.EC.20KMg3(AlSi3O10)(OH)2
Unclassified
ⓘ'Amphibole Supergroup'-AB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
ⓘ'Feldspar Group'-
ⓘ'Barkevikite' ?-
ⓘ'Feldspar Group
var. Perthite'		-
ⓘ'Iddingsite'-
ⓘ'Clinopyroxene Subgroup'-
ⓘ'Fayalite-Forsterite Series'-
ⓘ'Apatite'-Ca5(PO4)3(Cl/F/OH)

List of minerals for each chemical element

HHydrogen
HⓘAmphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
HⓘAnniteKFe32+(AlSi3O10)(OH)2
HⓘArfvedsonite[Na][Na2][Fe42+Fe3+]Si8O22(OH)2
HⓘAstrophylliteK2NaFe72+Ti2[Si4O12]2O2(OH)4F
HⓘFerro-edeniteNaCa2Fe52+(Si7Al)O22(OH)2
HⓘFerro-actinolite◻Ca2Fe52+(Si8O22)(OH)2
HⓘFerro-richterite{Na}{CaNa}{Fe52+}(Si8O22)(OH)2
HⓘHastingsiteNaCa2(Fe42+Fe3+)(Si6Al2)O22(OH)2
HⓘPhlogopiteKMg3(AlSi3O10)(OH)2
HⓘRiebeckite◻[Na2][Fe32+Fe23+]Si8O22(OH)2
HⓘApatiteCa5(PO4)3(Cl/F/OH)
OOxygen
OⓘAegirineNaFe3+Si2O6
OⓘAmphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
OⓘAnniteKFe32+(AlSi3O10)(OH)2
OⓘArfvedsonite[Na][Na2][Fe42+Fe3+]Si8O22(OH)2
OⓘAstrophylliteK2NaFe72+Ti2[Si4O12]2O2(OH)4F
OⓘAugite(CaxMgyFez)(Mgy1Fez1)Si2O6
OⓘFayaliteFe22+SiO4
OⓘFerro-edeniteNaCa2Fe52+(Si7Al)O22(OH)2
OⓘFerro-actinolite◻Ca2Fe52+(Si8O22)(OH)2
OⓘFerro-richterite{Na}{CaNa}{Fe52+}(Si8O22)(OH)2
OⓘHastingsiteNaCa2(Fe42+Fe3+)(Si6Al2)O22(OH)2
OⓘHedenbergiteCaFe2+Si2O6
OⓘIlmeniteFe2+TiO3
OⓘMagnetiteFe2+Fe23+O4
OⓘPhlogopiteKMg3(AlSi3O10)(OH)2
OⓘRiebeckite◻[Na2][Fe32+Fe23+]Si8O22(OH)2
OⓘZirconZr(SiO4)
OⓘFayalite-Forsterite Series
OⓘApatiteCa5(PO4)3(Cl/F/OH)
FFluorine
FⓘAmphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
FⓘAstrophylliteK2NaFe72+Ti2[Si4O12]2O2(OH)4F
FⓘApatiteCa5(PO4)3(Cl/F/OH)
NaSodium
NaⓘAegirineNaFe3+Si2O6
NaⓘArfvedsonite[Na][Na2][Fe42+Fe3+]Si8O22(OH)2
NaⓘAstrophylliteK2NaFe72+Ti2[Si4O12]2O2(OH)4F
NaⓘFerro-edeniteNaCa2Fe52+(Si7Al)O22(OH)2
NaⓘFerro-richterite{Na}{CaNa}{Fe52+}(Si8O22)(OH)2
NaⓘHastingsiteNaCa2(Fe42+Fe3+)(Si6Al2)O22(OH)2
NaⓘRiebeckite◻[Na2][Fe32+Fe23+]Si8O22(OH)2
MgMagnesium
MgⓘAugite(CaxMgyFez)(Mgy1Fez1)Si2O6
MgⓘPhlogopiteKMg3(AlSi3O10)(OH)2
MgⓘFayalite-Forsterite Series
AlAluminium
AlⓘAmphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
AlⓘAnniteKFe32+(AlSi3O10)(OH)2
AlⓘFerro-edeniteNaCa2Fe52+(Si7Al)O22(OH)2
AlⓘHastingsiteNaCa2(Fe42+Fe3+)(Si6Al2)O22(OH)2
AlⓘPhlogopiteKMg3(AlSi3O10)(OH)2
SiSilicon
SiⓘAegirineNaFe3+Si2O6
SiⓘAmphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
SiⓘAnniteKFe32+(AlSi3O10)(OH)2
SiⓘArfvedsonite[Na][Na2][Fe42+Fe3+]Si8O22(OH)2
SiⓘAstrophylliteK2NaFe72+Ti2[Si4O12]2O2(OH)4F
SiⓘAugite(CaxMgyFez)(Mgy1Fez1)Si2O6
SiⓘFayaliteFe22+SiO4
SiⓘFerro-edeniteNaCa2Fe52+(Si7Al)O22(OH)2
SiⓘFerro-actinolite◻Ca2Fe52+(Si8O22)(OH)2
SiⓘFerro-richterite{Na}{CaNa}{Fe52+}(Si8O22)(OH)2
SiⓘHastingsiteNaCa2(Fe42+Fe3+)(Si6Al2)O22(OH)2
SiⓘHedenbergiteCaFe2+Si2O6
SiⓘPhlogopiteKMg3(AlSi3O10)(OH)2
SiⓘRiebeckite◻[Na2][Fe32+Fe23+]Si8O22(OH)2
SiⓘZirconZr(SiO4)
SiⓘFayalite-Forsterite Series
PPhosphorus
PⓘApatiteCa5(PO4)3(Cl/F/OH)
SSulfur
SⓘChalcopyriteCuFeS2
SⓘPentlandite(NixFey)Σ9S8
ClChlorine
ClⓘAmphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
ClⓘApatiteCa5(PO4)3(Cl/F/OH)
KPotassium
KⓘAnniteKFe32+(AlSi3O10)(OH)2
KⓘAstrophylliteK2NaFe72+Ti2[Si4O12]2O2(OH)4F
KⓘPhlogopiteKMg3(AlSi3O10)(OH)2
CaCalcium
CaⓘAugite(CaxMgyFez)(Mgy1Fez1)Si2O6
CaⓘFerro-edeniteNaCa2Fe52+(Si7Al)O22(OH)2
CaⓘFerro-actinolite◻Ca2Fe52+(Si8O22)(OH)2
CaⓘFerro-richterite{Na}{CaNa}{Fe52+}(Si8O22)(OH)2
CaⓘHastingsiteNaCa2(Fe42+Fe3+)(Si6Al2)O22(OH)2
CaⓘHedenbergiteCaFe2+Si2O6
CaⓘApatiteCa5(PO4)3(Cl/F/OH)
TiTitanium
TiⓘAmphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
TiⓘAstrophylliteK2NaFe72+Ti2[Si4O12]2O2(OH)4F
TiⓘIlmeniteFe2+TiO3
FeIron
FeⓘAegirineNaFe3+Si2O6
FeⓘAnniteKFe32+(AlSi3O10)(OH)2
FeⓘArfvedsonite[Na][Na2][Fe42+Fe3+]Si8O22(OH)2
FeⓘAstrophylliteK2NaFe72+Ti2[Si4O12]2O2(OH)4F
FeⓘAugite(CaxMgyFez)(Mgy1Fez1)Si2O6
FeⓘChalcopyriteCuFeS2
FeⓘFayaliteFe22+SiO4
FeⓘFerro-edeniteNaCa2Fe52+(Si7Al)O22(OH)2
FeⓘFerro-actinolite◻Ca2Fe52+(Si8O22)(OH)2
FeⓘFerro-richterite{Na}{CaNa}{Fe52+}(Si8O22)(OH)2
FeⓘHastingsiteNaCa2(Fe42+Fe3+)(Si6Al2)O22(OH)2
FeⓘHedenbergiteCaFe2+Si2O6
FeⓘIlmeniteFe2+TiO3
FeⓘMagnetiteFe2+Fe23+O4
FeⓘPentlandite(NixFey)Σ9S8
FeⓘRiebeckite◻[Na2][Fe32+Fe23+]Si8O22(OH)2
FeⓘFayalite-Forsterite Series
NiNickel
NiⓘPentlandite(NixFey)Σ9S8
CuCopper
CuⓘChalcopyriteCuFeS2
ZrZirconium
ZrⓘZirconZr(SiO4)

Other Regions, Features and Areas containing this locality

North AmericaContinent
North America PlateTectonic Plate

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References

Stephenson, D., Upton, B. G. J. (1982) Ferromagnesian silicates in a differentiated alkaline complex: Kûngnât Fjeld, South Greenland.Mineralogical Magazine, 46 (340) 283-300doi:10.1180/minmag.1982.046.340.02
Hodson, M. E., Finch, Adrian A. (1997) Trough structures in the Western syenite of Kûngnât, S Greenland: mineralogy and mechanism of formation.Contributions to Mineralogy and Petrology, 127 (1) 46-56doi:10.1007/s004100050264
www.koeln.netsurf.de (n.d.)http://www.koeln.netsurf.de/~w.steffens/kgi.htm
Upton, B. G. J., Macdonald, R., Odling, N., Rämö, O. T., Bagiński, B. (2013) Kûngnât, revisited. A review of five decades of research into an alkaline complex in South Greenland, with new trace-element and Nd isotopic data.Mineralogical Magazine, 77 (4) 523-550doi:10.1180/minmag.2013.077.4.11
rruff.info (n.d.)https://rruff.info/doclib/MinMag/Volume_46/46-340-283.pdf
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