Foid-syenite
A rock classification type
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About Foid-syenite
Unique Identifiers
Mindat ID:
48347
Long-form identifier:
mindat:1:1:48347:6
GUID
(UUID V4):
(UUID V4):
57945c87-d230-43b3-9bda-4435dcdce68e
Classification of Foid-syenite
Foid-syenite is in section 11 of the QAPF diagram.
Sub-divisions of Foid-syenite
- Foid-syenite
- Sodalite-syenite
- Nepheline-syenite
- Cancrinite nepheline-syenite
- Eudialyte-bearing nepheline-syenite
- Grennaite
- Juvite
- Kaxtorpite
- Lakarpite
- Lardalite
- Ledmorite
- Mariupolite
- Pegmatitic nepheline syenite
- Rischorrite
- Saibarite
- Alkali-feldspar nepheline-syenite
- Pseudoleucite syenite
- Malignite
- Apgaitic nepheline-syenite
- Foyaite
- Litchfieldite
- Assyntite
- Borolanite
- Ditroite
- Canadite
- Melanocratic nepheline-syenite
- Cancrinite-syenite
- Analcime-syenite
- Shonkinite
Mineralogy of Foid-syenite
Essential minerals - these are minerals that are required within the classification of this rock:
Feldspar > Alkali Feldspar | A subgroup of the Feldspar Group, poor in calcium, and mostly rich in potassium. |
Feldspathoid | A family of rock-forming minerals consisting of aluminosilicates of sodium, potassium, or calcium and having too ... |
Non-essential minerals - these minerals are common, sometimes major components, but are not always present:
Amphibole > Hornblende | A commonly used informal name for dark green to black amphiboles, largely in the Hornblende Root Name ... |
Mica > Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
Internet Links for Foid-syenite
mindat.org URL:
https://www.mindat.org/min-48347.html
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References for Foid-syenite
Reference List:
IlĂmaussaq complex, Kujalleq, Greenland