The Igaliko nepheline syenite complex. General description
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چکیده
منابع مشابه
Feldspar and Nepheline Syenite Potential in British Columbia
Feldspathic materials are used in the glass and ceramic industries as a source of alkalis, alumina and silica. These elements affect the rate and temperature of melting. fluidity of the melt and physical properties of the finished product. Silica, sodium, potassium and alumina ratios in the feldspar product vary for each industrial user, however, iron must be limited to less than 0. I per cent ...
متن کاملModulated structure of nepheline.
The incommensurately modulated structure of a natural nepheline of composition K(0.54)Na(3.24)Ca(0.03)Al(3.84)Si(4.16)O(16) has been determined in superspace. The compound crystallizes in the trigonal centered superspace group X3(00γ)0 with γ = 0.2048 (10), X = (0, 0, 0, 0), (1/3, 2/3, 0, 2/3), (2/3, 1/3, 0, 1/3), a = 17.2889 (8) and c = 8.3622 (10) Å. The structure is characterized by a framew...
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Petrography and physicomechanical properties of alkali granites, alkali quartz syenite, and nepheline syenite from Ambela, NW Pakistan, have been investigated. Whereas the alkali quartz syenite and most of the alkali granites are megaporphyritic, the nepheline syenite and some of the alkali granites are microporphyritic. Their phenocryst shape and size and abundance of groundmass are also diffe...
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The crystal structures of three nepheline samples, (1) K1.91 Na6.04 Si8.15 Al7.72 Fe0.10 O32, a 9.9995(6), c 8.384(2) Å, P63, Z = 1, Dx = 2.673 g cm–3, from the Khibina–Lovozero complex, Kola Peninsula, Russia, (2) K1.60 Na6.21 Ca0.08 Si8.44 Al7.43 O32, a 9.985(1), c 8.372(1) Å, P63, Z = 1, Dx 2.660 g/cm3, from Bancroft, Ontario, Canada, and (3) K1.76 Na5.86 Ca0.13 Si8.12 Al7.84 Fe0.04 O32, a 9...
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The Kaleybar intrusion with an area of 750 km2 is located in the north east Azerbaijan, NW Iran. Based on structural subdivisions of Iran, it is located in the West Alborz-Azerbaijan Zone wich is intruded into the Azerbaijan continental crust during Eocene to Oligocene following the Pyrenean Orogeny. It consists of various rock types including nepheline syenite, syenite, nepheline diorite toge...
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ژورنال
عنوان ژورنال: Bulletin Grønlands Geologiske Undersøgelse
سال: 1970
ISSN: 2597-2936,0105-3507
DOI: 10.34194/bullggu.v85.6625