Alaskite
A rock subtype
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A light coloured alkali-feldspar-granite consisting almost entirely of quartz and alkali feldspar and 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
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
Unique Identifiers
Mindat ID:
48135
Long-form identifier:
mindat:1:1:48135:3
Classification of Alaskite
Rocks in section 2 of the QAPF diagram.
Mineralogy of Alaskite
Essential minerals - these are minerals that are required within the classification of this rock:
| Feldspar > Alkali Feldspar | A subgroup of the Feldspar Group, poor in calcium, and mostly rich in potassium. |
| Silica > Quartz | SiO2 |
Synonyms of Alaskite
Other Language Names for Alaskite
Norwegian:Alaskitt
Internet Links for Alaskite
mindat.org URL:
https://www.mindat.org/min-48135.html
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References for Alaskite
Reference List: