Definition of Porphyry shell. Meaning of Porphyry shell. Synonyms of Porphyry shell

Here you will find one or more explanations in English for the word Porphyry shell. Also in the bottom left of the page several parts of wikipedia pages related to the word Porphyry shell and, of course, Porphyry shell synonyms and on the right images related to the word Porphyry shell.

Definition of Porphyry shell

Porphyry shell
Porphyry 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.

Meaning of Porphyry shell from wikipedia

- original copper porphyry. It forms when meteoric water (rain or snow melt infiltrating the Earth's surface) percolates through the copper porphyry. Dissolved...
- imperial porphyry in antiquity. The quarry was active during the Greco-Roman period. Typical materials known from this site are: Reddish-Purple porphyry with...
- which he claimed would be even more impressive than the "magnificent porphyry bowl from Nero's Golden House in the Sala Rotunda of the Vatican." In order...
- oxidation of iron and manganese. It is often incorrectly described as porphyry. Brisbane tuff began to be used during the period when Captain Patrick...
- displaying short descriptions of redirect targets – An olivine-bearing basalt Porphyry – Textural form of igneous rock with large grained crystals in a fine matrix...
- Christian philosophers influenced by Platonism. Neoplatonists including Porphyry, Iamblichus, and Proclus wrote extensive commentaries on the Oracles, all...
- Ithaca, close by a harbor sacred to Phorcys. The Neoplatonist philosopher Porphyry read this p****age as an allegory of the whole universe – and he may not...
- palace and from the courtyard. The porch consists of multiple marble and porphyry pillars, with an ornate green and white-coloured wooden ceiling decorated...
- a contemporary observer, wrote about seeing one of the four enormous porphyry columns destined for the mosque's interior being cut down to size and about...
- the Archdiocese of Rio de Janeiro, media company Grupo Globo, oil company S**** do Brasil, environmental regulator of IBAMA, National Institute of Historic...