Simple Lithology

foid bearing alkali feldspar trachyte

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

definition Alkali feldspar trachytic rock that contains no quartz and between 0 and 10 percent feldspathoid mineral in the QAPF fraction. QAPF field 6'. more like this
source LeMaitre et al. 2002 more like this
type
Resource
Concept
broader alkali feldspar trachytic rock
narrower foid bearing alkali feldspar trachyte
in scheme simplelithology
is primary topic of foid bearing alkali feldspar trachyte