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Alaskite

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A light coloured alkali-feldspar-granite with M' colour index less than 10.

In the United States, a commonly used term for a granitic rock containing few, if any, dark minerals. The term is used to designate granitoid rocks in which quartz constitutes 20% to 60% of the felsic minerals and in which the ratio of alkali feldspar to total feldspar is greater than 90%; i.e., the equivalent of alkali-feldspar granite. Alaskite is a commercial source of feldspar near Spruce Pine, NC.

Compare with: aplogranite


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Classification of AlaskiteHide

Rocks in section 2 of the QAPF diagram.

Mineralogy of AlaskiteHide

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

Synonyms of AlaskiteHide

Internet Links for AlaskiteHide

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