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Nepheline sodalite-syenite

A rock subtype
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About Nepheline sodalite-syeniteHide

A sodalite-syenite containing nepheline


Unique IdentifiersHide

Mindat ID:
48349
Long-form identifier:
mindat:1:1:48349:4
GUID
(UUID V4):
50a6441c-e89b-4f62-8db2-01f860e4304c

Classification of Nepheline sodalite-syeniteHide

QAPF_P_11.png

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

Sub-divisions of Nepheline sodalite-syeniteHide

Mineralogy of Nepheline sodalite-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)
Feldspathoid > SodaliteNa4(Si3Al3)O12Cl
Non-essential minerals - these minerals are common, sometimes major components, but are not always present:
Amphibole > HornblendeA commonly used informal name for dark green to black amphiboles, largely in the Hornblende Root Name ...
Mica > BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2

Internet Links for Nepheline sodalite-syeniteHide

References for Nepheline sodalite-syeniteHide

Reference List:
 
Mineral and/or Locality  
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