amphibolite

[am-fib-uh-lahyt]

noun

Petrography.

1. a metamorphic rock composed mainly of amphibole and plagioclase.

amphibolite

/ æmˈfɪbəˌlaɪt /

noun

1. a metamorphic rock consisting mainly of amphibole and plagioclase

amphibolite

1. A metamorphic rock composed chiefly of amphibole and plagioclase and having little or no quartz.

Other Word Forms

• amphibolitic adjective

Word History and Origins

Origin of amphibolite¹

First recorded in 1825–35; amphibole + -ite ¹

Example Sentences

On our tour, Dr. Harlow spied more history in another goliath rock, a slab of amphibolite from Gore Mountain in upstate New York.

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Mr. Horenstein pointed out areas where the gneiss and the schist had deformed around the harder strata of amphibolite, as a viscous liquid might make its way slowly around a dam.

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They will find a Something there, In a cavern where no sound is, In a room of milky marble Walled with black amphibolite Over-scored with faded words And stained with time!

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The term is to some extent synonymous with “amphibolite” and “hornblende-schist.”

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It may be termed hornblende rock, or amphibolite.

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