amphibolite

noun

am·​phib·​o·​lite am-ˈfi-bə-ˌlīt 

: a usually metamorphic rock consisting essentially of amphibole

Examples of amphibolite in a Sentence

Recent Examples on the Web

The only way to connect the two main buildings was by burrowing down, and the first stage of construction involved more than a year of excavation, during which 9,000 tons of amphibolite, a metamorphic rock, were relocated. —Natalia Rachlin, WSJ, 12 Dec. 2018

Word History

Etymology

borrowed from French, from amphibole amphibole + -ite -ite entry 1

First Known Use

1826, in the meaning defined above