Simple Lithology

trachyte

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

definition Trachytoid that has a plagioclase to total feldspar ratio between 0.1 and 0.35, between 0 and 5 percent quartz in the QAPF fraction, and no feldspathoid minerals. QAPF field 7. more like this
source LeMaitre et al. 2002 more like this
type
Resource
Concept
broader trachytic rock
narrower trachyte
in scheme simplelithology
is primary topic of trachyte