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definition Phaneritic crystalline rock consisting of intermediate plagioclase, commonly with hornblende and often with biotite or augite; colour index M less than 90, sodic plagioclase (An0-An50), no feldspathoid, and between 0 and 5 percent quartz. Includes rocks defined modally in QAPF field 10 as diorite. more like this
source LeMaitre et al. 2002 more like this
Resource original
Concept original
broader original
narrower diorite original
in scheme simplelithology original
is primary topic of diorite