Simple Lithology
phonolite
http://resource.geosciml.org/classifier/cgi/lithology/phonolilte
| definition | Phonolitoid in which the plagioclase to total feldspar ratio is less than 0.1. Rock consists of alkali feldspar, feldspathoid minerals, and mafic minerals. |  |
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| example | peralkaline phonolite | |
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| source | LeMaitre et al. 2002 | |
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| in scheme | simplelithology | |||||
| is primary topic of | phonolilte | |||||