quartz alkali feldspar trachyte (Q41806)

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Alkali feldspar trachytic rock that contains and between 5 and 20 percent quartz mineral in the QAPF fraction. QAPF field 6*.
  • quartz-alkali-feldspar-trachyte
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English
quartz alkali feldspar trachyte
Alkali feldspar trachytic rock that contains and between 5 and 20 percent quartz mineral in the QAPF fraction. QAPF field 6*.
  • quartz-alkali-feldspar-trachyte

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