Foid-bearing-syenite
A rock classification type
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A syenite with no quartz and <10% foids
Unique Identifiers
Mindat ID:
48192
Long-form identifier:
mindat:1:1:48192:8
GUID
(UUID V4):
(UUID V4):
a53b4ad3-6189-48ff-95d5-91969c9594a2
Classification of Foid-bearing-syenite
Foid-bearing-syenite is in section 7' of the QAPF diagram.
Sub-divisions of Foid-bearing-syenite
- Foid-bearing-syenite
Mineralogy of Foid-bearing-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. |
Feldspar > Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
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-bearing-syenite
mindat.org URL:
https://www.mindat.org/min-48192.html
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References for Foid-bearing-syenite
Reference List: