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North Qoroq

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Journal Article
Published: 01 February 1997
Mineralogical Magazine (1997) 61 (1): 99–109.
...Ian M. Coulson Abstract The North Qoroq centre comprises a series of nested nepheline syenite intrusions and forms part of the midlate Proterozoic Gardar province of South Greenland. Within the centre fractionation has produced varied rock types ranging from augite-syenite to lujavrite, a eudialyte...
Journal Article
Published: 01 December 1996
The Canadian Mineralogist (1996) 34 (6): 1163–1178.
...Ian M. Coulson; Andrews D. Chambers Abstract The North Qoroq nepheline syenites form part of the rift-related Gardar Province of south Greenland. In situ fractionation of the syenitic magmas resulted in a peralkaline residual magma of lujavritic composition, with concentration of rare-earth...
Journal Article
Published: 01 February 1996
Mineralogical Magazine (1996) 60 (1): 207–220.
Image
Clinopyroxene Na-Mg-Fe 2+ +Mn diagram (after  Marks et al., 2008 ). (A) Kat...
Published: 19 October 2022
nepheline syenites, Canada ( Mitchell and Platt, 1982 ); (F) North Qôroq, South Greenland ( Coulson, 2003 ); (G) Ilímaussaq, South Greenland ( Larsen, 1974 ; Marks and Markl, 2001 ; Markl et al., 2001 ). FMQ—ayalite-magnetite-quartz buffer.
Image
Comparison of compositional variations of the Sushina EGM with that of the ...
Published: 01 May 2012
of the Pilanesberg complex are over lapping. Abbreviations: IPL: Inequigranular and porphyritic lujavrite; L: Lujavrite; MPL: Melanolujavrite; NQ: North Qôroq, Greenland ( Coulson, 1997 ) (Rest of the abbreviations are same as in Fig. 1 ).
Image
Compositional variation of apatites from the Gardar Province. Abbreviations...
Published: 01 March 2016
North Qôroq complex ( Rae et al. 1996 ); KUT = Kûngnât complex; and ILM = Ilímaussaq complex ( Rønsbo 1989 , 2008 ; Zirner et al. 2015 ). Analyses from IGL, T(OGDC), T(YGDC), and KUT (gray symbols) derive from different analytical conditions (see description of methods). For each locality
Image
(a) Ternary plot for compositional variation of nepheline from the Saima co...
Published: 30 November 2019
al . 2006 ); (B) Murun, Russia ( Mitchell & Vladykin 1996 ); (C) Lovozero, Russia ( Korobeinikov & Laajoki 1994 ); (D) Alnö, Sweden ( Vuorinen et al . 2005 ); (E) Motzfeldt, South Greenland ( Schöenenberger & Markl 2008 ); (F) North Qôroq, South Greenland ( Coulson 2003 ); (G) Ilímaussaq
Journal Article
Published: 01 May 2012
Jour. Geol. Soc. India (2012) 79 (5): 449–459.
... of the Pilanesberg complex are over lapping. Abbreviations: IPL: Inequigranular and porphyritic lujavrite; L: Lujavrite; MPL: Melanolujavrite; NQ: North Qôroq, Greenland ( Coulson, 1997 ) (Rest of the abbreviations are same as in Fig. 1 ). ...
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Journal Article
Published: 01 March 2016
American Mineralogist (2016) 101 (3): 612–626.
... North Qôroq complex ( Rae et al. 1996 ); KUT = Kûngnât complex; and ILM = Ilímaussaq complex ( Rønsbo 1989 , 2008 ; Zirner et al. 2015 ). Analyses from IGL, T(OGDC), T(YGDC), and KUT (gray symbols) derive from different analytical conditions (see description of methods). For each locality...
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Journal Article
Journal: Economic Geology
Published: 01 January 2012
Economic Geology (2012) 107 (1): 81–104.
..., and bastnäsite-(Ce) commonly occur together. This has been suggested by Coulson and Chambers (1996) for the rocks of the North Qôroq Centre in Greenland. REE fluorocarbonate minerals, predominantly bastnäsite-(Ce), synchysite-(Ce), and minor parisite-(Ce), are most common several tens of meters above...
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Journal Article
Published: 07 July 2023
The Canadian Journal of Mineralogy and Petrology (2023) 61 (2): 387–400.
... potassium yttrium silicate mineral from Mont St-Hilaire, Quebec . The Canadian Mineralogist 16 , 561 – 565 . Coulson, I.M. (1997) Post-magmatic alteration in eudialyte from the North Qoroq centre, South...
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Journal Article
Published: 31 March 2018
The Canadian Mineralogist (2018) 56 (2): 167–187.
... , Montreuil et al . 2013 , 2016a ). Figure 9 shows that the U and Th content within a single fluorapatite crystal may record this decoupling, as the Th content is higher relative to U along fractures. The Type 2 fluorapatite grains are similar to fluorapatite grains from North Qôroq (Greenland...
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Journal Article
Published: 30 November 2019
The Canadian Mineralogist (2019) 57 (6): 903–924.
... al . 2006 ); (B) Murun, Russia ( Mitchell & Vladykin 1996 ); (C) Lovozero, Russia ( Korobeinikov & Laajoki 1994 ); (D) Alnö, Sweden ( Vuorinen et al . 2005 ); (E) Motzfeldt, South Greenland ( Schöenenberger & Markl 2008 ); (F) North Qôroq, South Greenland ( Coulson 2003 ); (G) Ilímaussaq...
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Journal Article
Published: 01 June 2013
Mineralogical Magazine (2013) 77 (4): 523–550.
..., extrusions and sedimentary rocks) are shown in black. Kûngnât lies to the north-west of the Province, within the Border Zone Archaean. Radiometric age determinations ( Upton et al. , 2003 and references therein) have shown that although all the alkaline rocks have genetic affinities, the province...
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Journal Article
Published: 01 December 2017
Mineralogical Magazine (2017) 81 (6): 1367–1395.
... , A. ( 1996 ) Patterns of zonation in rare-earth-bearing minerals in nepheline syenites of the North Qôroq Centre, South Greenland . The Canadian Mineralogist , 34 , 1163 – 1178 . Dowman , E. ( 2014 ) Mineralisation and Fluid Processes in the Alteration Zone Around the Chilwa Island...
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Journal Article
Published: 01 February 2011
Mineralogical Magazine (2011) 75 (1): 87–115.
... formation . Bulletin de la Société française de Minéralogie , 84 , 265 – 269 . Coulson I.A. ( 1997 ) Post-magmatic alteration in eudialyte from the North Qôroq centre, South Greenland . Mineralogical Magazine , 61 , 99 – 109 . Coulson I.A. Chambers A.D. ( 1996...
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Journal Article
Published: 01 August 1990
Journal of the Geological Society (1990) 147 (4): 623–638.
.... A. Brannon J. C Anderson T. F. Pier J. 87 Sr/ 86 Sr ratios in Permo-Carboniferous seawaters from the analysis of well preserved brachiopod shells Geochemica et Cosmochimica Acta 1986 50 1321 1328 Rae D. A. Chambers A. D. Metasomatism in the North Qoroq Centre, South...
Journal Article
Published: 01 August 2006
Mineralogical Magazine (2006) 70 (4): 347–359.
... evolution are controlled by such factors as magma composition, alkalinity and oxygen fugacity ( Larsen, 1976 ; Jones, 1984 ). The Lovozero alkaline complex, the largest of the world’s layered peralkaline intrusions, covers 650 km 2 and is situated in the central part of the Kola Peninsula, north...
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Journal Article
Journal: GSA Bulletin
Published: 19 October 2022
GSA Bulletin (2023) 135 (5-6): 1530–1546.
... nepheline syenites, Canada ( Mitchell and Platt, 1982 ); (F) North Qôroq, South Greenland ( Coulson, 2003 ); (G) Ilímaussaq, South Greenland ( Larsen, 1974 ; Marks and Markl, 2001 ; Markl et al., 2001 ). FMQ—ayalite-magnetite-quartz buffer. ...
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Journal Article
Published: 01 February 2022
American Mineralogist (2022) 107 (2): 282–293.
... in carbonatitic rocks: compositional variation, zoning, element partitioning and petrogenetic significance . Lithos , 274-275 , 188 – 213 . Coulson , I.M. ( 2003 ) Evolution of the North Qôroq centre nepheline syenites, South Greenland: Alkali-mafic silicates and the role of metasomatism...
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