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Granitoid

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A coarse-grained crystalline rock composed mostly of quartz, alkali feldspar and plagioclase.


Classification of Granitoid

Rocks in sections 2,3,4 and 5 of the QAPF diagram.

Sub-divisions of Granitoid

Mineralogy of Granitoid

Essential minerals - these are minerals that are required within the classification of this rock:
Silica > QuartzSiO2
Non-essential minerals - these minerals are common, sometimes major components, but are not always present:
Feldspar > Alkali FeldsparFeldspar Group minerals rich in Potassium or Sodium.
Feldspar > PlagioclaseA petrological term for Albite-Anorthite Series.

Other Names for Granitoid

Name in Other Languages:

Internet Links for Granitoid

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