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Microgranite

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A granite with grainsize about 1-5mm.


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Classification of MicrograniteHide

QAPF_P_3.png

Granite is in section 3 of the QAPF diagram.

Sub-divisions of MicrograniteHide

Mineralogy of MicrograniteHide

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:
Amphibole > HornblendeAn informal name for dark green to black amphiboles, mostly ferro-hornblende or ...
Mica > BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
Mica > MuscoviteKAl2(AlSi3O10)(OH)2

Internet Links for MicrograniteHide

 
Mineral and/or Locality  
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