About The Word Porphyry

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Porphyry

Porphyry Definition And Meaning |
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What's The Definition Of Porphyry?
[n] any igneous rock with crystals embedded in a finer groundmass of minerals
Synonyms | Synonyms for Porphyry: porphyritic rock Related Terms | Find terms related to Porphyry: See Also | groundmass | igneous rock Porphyry In Webster's Dictionary \Por"phy*ry\, n.; pl. {Porphyries}. [F. porphyre, L.
porphyrites, fr. Gr. ? like purple, fr. ? purple. See
{Purple}.] (Geol.)
A term used somewhat loosely to designate a rock consisting
of a fine-grained base (usually feldspathic) through which
crystals, as of feldspar or quartz, are disseminated. There
are red, purple, and green varieties, which are highly
esteemed as marbles.
{Porphyry shell} (Zo["o]l.), a handsome marine gastropod
shell ({Oliva porphyria}), having a dark red or brown
polished surface, marked with light spots, like porphyry.
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