Quartz-trachyte
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Trachytic rocks, with felsics comprising 5-20% quartz and alkali feldspar/total feldspar 0.65-0.9
Classification of Quartz-trachyte

Foid-bearing-trachyte appears in field 7' in the QAPF diagram.
Mineralogy of Quartz-trachyte
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 |
Internet Links for Quartz-trachyte
mindat.org URL:
https://www.mindat.org/min-48470.html
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