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epidiorite

[ ep-i-dahy-uh-rahyt ]
/ ˌɛp ɪˈdaɪ əˌraɪt /
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noun Petrography.
a schistose metamorphic rock resulting from the alteration of augite to hornblende in a gabbro or dolerite.
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Origin of epidiorite

First recorded in 1885–90; epi- + diorite
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

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