eclogite

[ ek-luh-jahyt ]

noun

1. a rock consisting of a granular aggregate of green pyroxene and red garnet, often containing kyanite, silvery mica, quartz, and pyrite.

eclogite

/ ˈɛkləˌdʒaɪt /

noun

1. a rare coarse-grained basic rock consisting principally of garnet and pyroxene. Quartz, feldspar, etc, may also be present. It is thought to originate by metamorphism or igneous crystallization at extremely high pressure

eclogite

/ ĕk′lə-jīt′ /

1. A greenish, coarse-grained metamorphic rock consisting of pyroxene, quartz, and feldspar with large red garnet inclusions. Eclogites form under conditions of high pressure and moderate to high temperatures.

Word History and Origins

Origin of eclogite¹

1815–25; < Greek eklog ( ḗ ) selection ( eclogue ) + -ite ¹

Word History and Origins

Origin of eclogite¹

C19: from Greek eklogē a selection

Example Sentences

Only diamonds that formed after that date contain specks of eclogite, a rock forged from material dragged down from Earth’s surface.

From Quanta Magazine

In another eclogite boulder, diamond was found partly embedded in pyrope.

From Project Gutenberg

In the Newlands boulder the diamonds have the appearance of being an original constituent of the eclogite.

From Project Gutenberg

On the other hand many tons of the somewhat similar eclogite in the De Beers mine have been crushed and have not yielded diamond.

From Project Gutenberg

Some regard the eclogite boulders as derived from deep-seated crystalline rocks, others as concretions in the blue ground.

From Project Gutenberg

With omphacite and smaragdite, garnet forms the peculiar rock called eclogite.

From Project Gutenberg