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Stephenson, D., Upton, B. G. J. (1982) Ferromagnesian silicates in a differentiated alkaline complex: Kûngnât Fjeld, South Greenland. Mineralogical Magazine, 46 (340) 283-300 doi:10.1180/minmag.1982.046.340.02

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Reference TypeJournal (article/letter/editorial)
TitleFerromagnesian silicates in a differentiated alkaline complex: Kûngnât Fjeld, South Greenland
JournalMineralogical MagazineISSN0026-461X
AuthorsStephenson, D.Author
Upton, B. G. J.Author
Year1982 (September)Volume46
Page(s)283-300Issue340
PublisherMineralogical Society
Download URLhttps://rruff.info/doclib/MinMag/Volume_46/46-340-283.pdf+
DOIdoi:10.1180/minmag.1982.046.340.02Search in ResearchGate
Mindat Ref. ID3403Long-form Identifiermindat:1:5:3403:0
GUID63003588-fbfb-496f-96ba-69567176de59
Full ReferenceStephenson, D., Upton, B. G. J. (1982) Ferromagnesian silicates in a differentiated alkaline complex: Kûngnât Fjeld, South Greenland. Mineralogical Magazine, 46 (340) 283-300 doi:10.1180/minmag.1982.046.340.02
Plain TextStephenson, D., Upton, B. G. J. (1982) Ferromagnesian silicates in a differentiated alkaline complex: Kûngnât Fjeld, South Greenland. Mineralogical Magazine, 46 (340) 283-300 doi:10.1180/minmag.1982.046.340.02
In(1982, September) Mineralogical Magazine Vol. 46 (340) Mineralogical Society
Abstract/NotesAbstractKûngnât Fjeld is an intrusive complex resulting from three intrusive events involving trachyte, mafic trachyte and hawaiite magmas tapped successively from a single magmatic source. In situ differentiation produced gabbroic, syeno-gabbroic, syenitic, and quartz syenitic cumulates showing strong cryptic variation. Layered sequences of syenitic rocks total c. 3500 m. The compositional range is extended by late-stage minor intrusions of microsyenite and peralkaline granite. The principal cumulus minerals are feldspar (Ab40An60 to Or45Ab51An4); olivine (Fo56 to Fo1) and clinopyroxene (Di70Hd27Ac3 to Di6Hd90Ac4 followed by an abrupt change of trend towards Di3Hd78Ac19 in the layered series and nearly pure aegirine in some peralkaline residues). Intercumulus phases are amphibole (hastingsite to ferro-edenite to ferro-actinolite in the layered series with riebeckite to arfvedsonite in some associated granites) and biotite (annite31 to annite98.5).

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Locality Pages

LocalityCitation Details
Kûngnât complex, Arsuk Fjord, Sermersooq, Greenland

Mineral Occurrences

LocalityMineral(s)
Kûngnât complex, Arsuk Fjord, Sermersooq, Greenlandⓘ Aegirine, ⓘ Amphibole Supergroup, ⓘ Arfvedsonite, ⓘ Astrophyllite, ⓘ Augite, ⓘ Clinopyroxene Subgroup, ⓘ Fayalite-Forsterite Series, ⓘ Ferro-actinolite, ⓘ Ferro-edenite, ⓘ Ferro-richterite, ⓘ Gabbro, ⓘ Hastingsite, ⓘ Hedenbergite, ⓘ Phlogopite, ⓘ Quartz-syenite, ⓘ Riebeckite, ⓘ Syenite, ⓘ Zircon

See Also

These are possibly similar items as determined by title/reference text matching only.

Upton, B.G.J (1960) The alkaline igneous complex of Kûngnât Fjeld, South Greenland. Bulletin Grønlands Geologiske Undersøgelse, 27. 1-145 doi:10.34194/bullggu.v27.6560
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) 523-550 doi:10.1180/minmag.2013.077.4.11
Upton, B. G. J., Stephenson, D., Martin, A. R. (1985) The Tugtutôq older giant dyke complex: mineralogy and geochemistry of an alkali gabbro-augite-syenite-foyaite association in the Gardar Province of South Greenland. Mineralogical Magazine, 49 (354) 623-642 doi:10.1180/minmag.1985.049.354.01
Upton, B. G. J., Stephenson, D., & Martin, A. R. (1985). The Tugtutôq older giant dyke complex: mineralogy and geochemistry of an alkali gabbro-augite-syenite-foyaite association in the Gardar Province of South Greenland. Mineralogical Magazine, 49(354), 623–642. doi:10.1180/minmag.1985.049.354.01
Upton, B. G. J., Macdonald, R., Hill, P. G., Jefferies, B., Ford, C. E. (1976) Narsarsukite: a new occurrence in peralkaline trachyte, south Greenland. Mineralogical Magazine, 40 (315) 737-746 doi:10.1180/minmag.1976.040.315.07
Upton, B. G. J., Hill, P. G., Johnsen, O., Petersen, O. V. (1978) Emeleusite: a new LiNaFeIII silicate from south Greenland. Mineralogical Magazine, 42 (321) 31-34 doi:10.1180/minmag.1978.042.321.03
Robbins, D. W., Strens, R. G. J. (1972) Charge-transfer in ferromagnesian silicates: The polarized electronic spectra of trioctahedral micas. Mineralogical Magazine, 38 (297) 551-563 doi:10.1180/minmag.1972.038.297.03
Hodson, Mark (1997) Post-crystallisation modification of the igneous layering in the Nunarssuit and West Kûngnât syenites, South Greenland. Mineralogical Magazine, 61 (407) 467-483 doi:10.1180/minmag.1997.061.407.01
Upton, B. G. J., Stephenson, D., & Martin, A. R. (1985). The Tugtutôq older giant dyke complex: mineralogy and geochemistry of an alkali gabbro-augite-syenite-foyaite association in the Gardar Province of South Greenland. Mineralogical Magazine, 49(354), 623–642.
Dunn, Pete J., Norberg, Julie A., Leavens, Peter B. (1982) Roeblingite: new chemical data. Mineralogical Magazine, 46 (340) 341-342 doi:10.1180/minmag.1982.046.340.07
Rønsbo, Jørn G., Balić-Žunić, Tonči, Petersen, Ole V. (2017) Dyrnaesite-(La) a new hyperagpaitic mineral from the Ilímaussaq alkaline complex, South Greenland. Mineralogical Magazine, 81 (1) 103-111 doi:10.1180/minmag.2016.080.075
 
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