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porphyrite

noun
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por·​phy·​rite | \ ˈpȯ(r)fəˌrīt \
plural -s

Definition of porphyrite

1 : an Egyptian red porphyry
2 : a quartz-free porphyry whose feldspar is plagioclase

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History and Etymology for porphyrite

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

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“Porphyrite.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/porphyrite. Accessed 22 Feb. 2020.

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