Simple Lithology

phonolitoid

http://resource.geosciml.org/classifier/cgi/lithology/phonolitoid

star this property alt label
phonolitic rock more like this
star this property definition Fine grained igneous rock than contains less than 90 percent mafic minerals, between 10 and 60 percent feldspathoid mineral in the QAPF fraction and has a plagioclase to total feldspar ratio less than 0.5. Includes rocks defined modally in QAPF fields 11 and 12, and TAS field Ph. more like this
star this property narrower phonolilte
star this property broader phonolitoid
tephritic phonolite
star this property broader phonolitoid
star this property source LeMaitre et al. 2002 more like this
star this property type
Resource
Concept
star this property broader fine grained igneous rock
star this property narrower phonolitoid
star this property in scheme simplelithology
unstar this property is primary topic of phonolitoid& properties=isPrimaryTopicOf