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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. more like this
example peralkaline phonolite more like this
source LeMaitre et al. 2002 more like this
type
Resource original
Concept original
broader
http://resource.geosciml.org/classifier/cgi/lithology/phonolitoid original
narrower phonolilte original
in scheme simplelithology original
is primary topic of phonolilte