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eucrite
[ yoo-krahyt ]
noun
Petrography.
- a basic gabbro consisting mainly of bytownite and augite.
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˜yÐÄvlog History and Origins
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Example Sentences
Examples have not been reviewed.
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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