amphibolite
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About Our Definitions: All forms of a word (noun, verb, etc.) are now displayed on one page.am·phib·o·lite
noun \am-ˈfi-bə-ˌlīt\Definition of AMPHIBOLITE
: a usually metamorphic rock consisting essentially of amphibole
First Known Use of AMPHIBOLITE
1826
amphibolite
noun (Concise Encyclopedia)Igneous or metamorphic rock composed largely or dominantly of amphibole minerals. For igneous rocks, the term hornblendite is usually used and is more restrictive; hornblende is the most common amphibole. Metamorphic amphibolites are more widespread and variable than igneous ones. Typically, they are medium- to coarse-grained and are composed of hornblende and plagioclase. Basic igneous rocks such as basalts and gabbros (see acid and basic rocks) can be the parent rocks of amphibolite.
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