alkali feldspar trachyte (Q41798)
From geokb
Trachytoid that has a plagioclase to total feldspar ratio less than 0.1, between 0 and 5 percent quartz in the QAPF fraction, and no feldspathoid minerals. QAPF field 6.
- alkali-feldspar-trachyte
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | alkali feldspar trachyte |
Trachytoid that has a plagioclase to total feldspar ratio less than 0.1, between 0 and 5 percent quartz in the QAPF fraction, and no feldspathoid minerals. QAPF field 6. |
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