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Peralkaline-alkali-feldspar nepheline-syenite

A rock subtype
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08984620017272472712601.jpg
Kakortokite

Ilímaussaq complex, Kujalleq, Greenland
06582660017272472727069.jpg
Kakortokite

Ilímaussaq complex, Kujalleq, Greenland
09374520017272285902239.jpg
Kakortokite

Kringlerne, Kangerluarsuk Fjord, Ilímaussaq complex, Kujalleq, Greenland
01892330017271952978263.jpg
Kakortokite

Ilímaussaq complex, Kujalleq, Greenland
07317840017271952982238.jpg
Kakortokite

Ilímaussaq complex, Kujalleq, Greenland
09374520017272285902239.jpg
Kakortokite

Kringlerne, Kangerluarsuk Fjord, Ilímaussaq complex, Kujalleq, Greenland
01892330017271952978263.jpg
Kakortokite

Ilímaussaq complex, Kujalleq, Greenland
02388210017271953004749.jpg
Kakortokite

Ilímaussaq complex, Kujalleq, Greenland
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About Peralkaline-alkali-feldspar nepheline-syeniteHide

A alkali-feldspar nepheline-syenite characterised by complex Zr and Ti minerals such as eudialyte rather than simple minerals sch as zircon or ilmenite.


Unique IdentifiersHide

Mindat ID:
48352
Long-form identifier:
mindat:1:1:48352:8

Classification of Peralkaline-alkali-feldspar nepheline-syeniteHide

QAPF_P_11.png

Foid-syenite is in section 11 of the QAPF diagram.

Sub-divisions of Peralkaline-alkali-feldspar nepheline-syeniteHide

  • Peralkaline-alkali-feldspar nepheline-syenite

Mineralogy of Peralkaline-alkali-feldspar nepheline-syeniteHide

Essential minerals - these are minerals that are required within the classification of this rock:
Feldspar > Alkali FeldsparA subgroup of the Feldspar Group, poor in calcium, and mostly rich in potassium.
Feldspathoid > NephelineNa3K(Al4Si4O16)
Non-essential minerals - these minerals are common, sometimes major components, but are not always present:
EudialyteNa15Ca6Fe3Zr3Si(Si25O73)(O,OH,H2O)3(Cl,OH)2

Synonyms of Peralkaline-alkali-feldspar nepheline-syeniteHide

Internet Links for Peralkaline-alkali-feldspar nepheline-syeniteHide

References for Peralkaline-alkali-feldspar nepheline-syeniteHide

Reference List:
Quick NavTopAbout Peralkaline-alkali-feldspar nepheline-syeniteUnique IdentifiersClassification Sub-divisions Mineralogy SynonymsInternet Links References
 
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