Alkali-feldspar-syenite
A rock classification type
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Unique Identifiers
Mindat ID:
48180
Long-form identifier:
mindat:1:1:48180:3
GUID
(UUID V4):
(UUID V4):
f01df068-83c5-43ca-a153-05788654edb7
Classification of Alkali-feldspar-syenite
Alkali-feldspar-syenite is in section 6 of the QAPF diagram.
Sub-divisions of Alkali-feldspar-syenite
Mineralogy of Alkali-feldspar-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. |
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 Alkali-feldspar-syenite
mindat.org URL:
https://www.mindat.org/min-48180.html
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