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Alkali-feldspar-granite

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A light-coloured granitoid (a coarse grained igneous rock composed mostly of quartz, Kspar (alkali-feldspar) and sodic plagioclase), where plagioclase is less than 10% of the total feldspar on the QAPF diagram.


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Classification of Alkali-feldspar-graniteHide

Rocks in section 2 of the QAPF diagram.

Sub-divisions of Alkali-feldspar-graniteHide

Mineralogy of Alkali-feldspar-graniteHide

Essential minerals - these are minerals that are required within the classification of this rock:
Feldspar > Alkali FeldsparFeldspar Group minerals rich in Potassium or Sodium.
Silica > QuartzSiO2
Non-essential minerals - these minerals are common, sometimes major components, but are not always present:
Feldspar > PlagioclaseA petrological term for Albite-Anorthite Series.
Mica > BiotiteA series or subgroup of the Mica Group.
Mica > MuscoviteKAl2(AlSi3O10)(OH)2

Synonyms of Alkali-feldspar-graniteHide

Internet Links for Alkali-feldspar-graniteHide

Mineral and/or Locality  
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