eucrite

[yoo-krahyt]

noun

Petrography.

1. a basic gabbro consisting mainly of bytownite and augite.

Word History and Origins

Origin of eucrite¹

1895–1900; < German Eukrit < Greek eúkritos readily chosen, equivalent to eu- eu- + kritós separated (verbid of krī́nein )

Example Sentences

The name eucrite has been given to gabbros in which the felspar is mainly anorthite; many of them also contain hypersthene or enstatite and olivine, while allivalites are anorthite-olivine rocks in which the two minerals occur in nearly equal proportions; harrisites have preponderating olivine, anorthite felspar and a little pyroxene.

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