porphyry

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por·phy·ry

 (pôr′fə-rē)
n. pl. por·phy·ries
1. Any of various varieties of reddish-purple rock, often containing light-colored crystals, used as a decorative stone.
2. Geology Rock containing relatively large conspicuous crystals, especially of feldspar, in a fine-grained igneous matrix.

[Middle English porphiri, porfurie, purplish-red porphyry, from Old French porfire, from Italian porfiro, from Medieval Latin porphyrium, from Latin porphyrītēs, from Greek porphurītēs, from porphurā, mollusk yielding Tyrian purple, Tyrian purple garment; see purple.]

porphyry

(ˈpɔːfɪrɪ)
n, pl -ries
1. (Geological Science) any igneous rock with large crystals embedded in a finer groundmass of minerals
2. (Geological Science) obsolete a reddish-purple rock consisting of large crystals of feldspar in a finer groundmass of feldspar, hornblende, etc
[C14 porfurie, from Late Latin porphyrītēs, from Greek porphuritēs (lithos) purple (stone), from porphuros purple]

Porphyry

(ˈpɔːfɪrɪ)
n
(Biography) original name Malchus. 232–305 ad, Greek Neo-Platonist philosopher, born in Syria; disciple and biographer of Plotinus

por•phy•ry

(ˈpɔr fə ri)

n., pl. -ries.
1. a very hard rock, anciently quarried in Egypt, having a dark, purplish red groundmass containing small crystals of feldspar.
2. any igneous rock containing coarse crystals, as phenocrysts, in a finer-grained groundmass.
[1350–1400; Middle English porfurie, porfirie < Medieval Latin porphyreum, alter. of Latin porphyrītēs < Greek porphyritēs (líthos) porphyritic (i.e., purplish) stone =pórphyr(os) purple + -ītēs; see -ite1]
por`phy•rit′ic (-ˈrɪt ɪk) adj.

por·phy·ry

(pôr′fə-rē)
A fine-grained igneous rock containing some relatively large crystals, especially of feldspar.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.porphyry - any igneous rock with crystals embedded in a finer groundmass of mineralsporphyry - any igneous rock with crystals embedded in a finer groundmass of minerals
groundmass - (geology) the matrix of fine-grained crystalline material in which larger crystals are embedded
igneous rock - rock formed by the solidification of molten magma
Translations

porphyry

[ˈpɔːfɪrɪ] Npórfido m

porphyry

nPorphyr m
References in periodicals archive ?
He has earned a reputation as an expert in copper porphyries and will provide much added value to furthering our understanding of both of the Company's primary assets -- the Junin Project as well as the Chaucha copper porphyry.
It has been noted that all major known mineralized Laramide porphyries (the host to most of the US copper porphyries) in southwestern New Mexico are located around the margins of the Burro Uplift.
The Tranca Loma and Camp porphyries occur on either side of Aurelian's Bonza-Las Penas epithermal gold-silver deposit.
Two coarse grained diorite porphyries form the focus for the copper and gold mineralization, with gold tending to be concentrated closer to the intrusions, and the copper being found slightly "outboard" of the gold as well as being coincident with it.
Subsequent surface sampling identified a 1,600 by 2,000 foot area highly anomalous in gold hosted in strongly hydrothermal altered dacite porphyries and associated multi-stage silcified hydrothermal breccias.