Simple Lithology

amphibolite

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

definition Metamorphic rock mainly consisting of green, brown or black amphibole and plagioclase (including albite), which combined form 75 percent or more of the rock, and both of which are present as major constituents. The amphibole constitutes 50 percent or more of the total mafic constituents and is present in an amount of 30 percent or more; other common minerals include quartz, clinopyroxene, garnet, epidote-group minerals, biotite, titanite and scapolite. more like this
source Coutinho et al. 2007, IUGS SCMR chapter 8 (http://www.bgs.ac.uk/SCMR/) more like this
type
Resource
Concept
broader metamorphic rock
narrower amphibolite
in scheme simplelithology
is primary topic of amphibolite