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Quartz-trachyte

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

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Classification of Quartz-trachyteHide

Rock
- Igneous rock
  - Normal crystalline igneous rock
    - Fine-grained ("volcanic") normal crystalline igneous rock
      - Trachytoid
        Quartz-trachyte

Foid-bearing-trachyte appears in field 7' in the QAPF diagram.

Mineralogy of Quartz-trachyteHide

Essential minerals - these are minerals that are required within the classification of this rock:

Feldspar > Alkali Feldspar	Feldspar Group minerals rich in Potassium or Sodium.
Silica > Quartz	SiO₂

Internet Links for Quartz-trachyteHide

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