SISSVoc Default

anorthositic rock

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

definition Leucocratic phaneritic crystalline igneous rock consisting essentially of plagioclase, often with small amounts of pyroxene. By definition, colour index M is less than 10, and plagiclase to total feldspar ratio is greater than 0.9. Less than 20 percent quartz and less than 10 percent feldspathoid in the QAPF fraction. QAPF field 10, 10*, and 10'. more like this
narrower
http://resource.geosciml.org/classifier/cgi/lithology/anorthosite original
broader anorthositic_rock original
http://resource.geosciml.org/classifier/cgi/lithology/foid_bearing_anorthosite original
broader anorthositic_rock original
http://resource.geosciml.org/classifier/cgi/lithology/quartz_anorthosite original
broader anorthositic_rock original
note Anorthositic rock term invented to label the combined QAPF fields 10, 10*, and 10', in order to construct hierarchy in this vocabulary. more like this
source LeMaitre et al. 2002; This vocabulary more like this
type
Resource original
Concept original
broader
http://resource.geosciml.org/classifier/cgi/lithology/phaneritic_igneous_rock original
narrower anorthositic_rock original
in scheme simplelithology original
is primary topic of anorthositic_rock