Simple Lithology

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tonalite

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

definition

Granitoid consisting of quartz and intermediate plagioclase, usually with biotite and amphibole. Includes rocks defined modally in QAPF field 5; ratio of plagioclase to total feldspar is greater than 0.9.

example

plagiogranite
trondhjemite

source

LeMaitre et al. 2002

type

Resource
Concept

broader

granitoid

	narrower	tonalite

in scheme

simplelithology

is primary topic of

tonalite