phonolite (Q41856)
From geokb
Phonolitic rocks are fine-grained felsic igneous rocks lacking quartz, with felsics comprising 10-60% foids and alkali feldspar/total feldspar >0
Language | Label | Description | Also known as |
---|---|---|---|
English | phonolite |
Phonolitic rocks are fine-grained felsic igneous rocks lacking quartz, with felsics comprising 10-60% foids and alkali feldspar/total feldspar >0 |