porphyrite

noun

por·​phy·​rite

ˈpȯ(r)fəˌrīt

plural -s

1

: an Egyptian red porphyry

2

: a quartz-free porphyry whose feldspar is plagioclase

Word History

Etymology

Latin porphyrites purple colored stone, porphyry, from Greek porphyritēs (lithos), from porphyra purple + -itēs, adjective suffix

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