Simple Lithology

foid syenite

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

definition Foid syenitoid that has a plagioclase to total feldspar ratio of less than 0.1. Includes rocks defined modally in QAPF field 11. more like this
source LeMaitre et al. 2002 more like this
type
Resource
Concept
broader foid syenitoid
narrower foid syenite
in scheme simplelithology
is primary topic of foid syenite