Simple Lithology

orthogneiss

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

definition A gneiss with mineralogy and texture indicating derivation from a phaneritic igneous rock protolith. Typically consists of abundant feldspar, with quartz, and variable hornblende, biotite, and muscovite, with a relatively homogeneous character. more like this
source This vocabulary more like this
type
Resource
Concept
broader gneiss
narrower orthogneiss
in scheme simplelithology
is primary topic of orthogneiss