Porphyry (geology) - Wikipedia
Porphyry (/ ˈ p ɔːr f ə r i / POR-fə-ree) is any of various granites or igneous rocks with coarse-grained crystals such as feldspar or quartz dispersed in a fine-grained silicate-rich, generally aphanitic matrix or groundmass.
Porphyry (philosopher) - Wikipedia
Porphyry of Tyre (/ ˈ p ɔːr f ɪr i /; Koinē Greek: Πορφύριος, romanized: Porphýrios; c. 234 – c. AD 305) was a Neoplatonic philosopher born in Tyre, Roman Phoenicia [1] during Roman rule.
Porphyry Deposits - Geology Science
2023年4月23日 · Porphyry deposits are a type of mineral deposit that form from large-scale hydrothermal systems associated with intrusive igneous rocks. They are characterized by the presence of porphyritic rocks that contain large crystals (phenocrysts) surrounded by a fine-grained matrix (groundmass).
What Is Porphyry? How Does It Form, and In Which Rocks?
2022年9月2日 · Porphyry (pronounced as POR-fə-ree) describes any intrusive or extrusive igneous texture rock with large-grained crystals embedded in a finer-grain matrix. The finer-grained groundmass or matrix can be aphanitic or phaneritic. However, the larger crystals must be easily noticed and distinguishable.
Porphyry - Wikipedia
Porphyry (geology), an igneous rock with large crystals in a fine-grained matrix, often purple, and prestigious Roman sculpture material; Shoksha porphyry, quartzite of purple color resembling true porphyry mined near the village of Shoksha, Karelia, Russia; Porphyritic, the general igneous texture of a rock with two distinct crystal ...
Porphyry - Stanford Encyclopedia of Philosophy
Porphyry (234?–305? C.E.) was a Neoplatonist philosopher born in Tyre in Phoenicia. He studied with Longinus in Athens and then with Plotinus in Rome from 263–269 C.E. and became a follower of the latter’s version of Platonism.
Porphyry Definition & Meaning - Merriam-Webster
The meaning of PORPHYRY is a rock consisting of feldspar crystals embedded in a compact dark red or purple groundmass.
Porphyry | Neoplatonism, Logic, Commentaries | Britannica
Porphyry was a Neoplatonist Greek philosopher, important both as an editor and as a biographer of the philosopher Plotinus and for his commentary on Aristotle’s Categories, which set the stage for medieval developments of logic and the problem of universals.
Porphyry (geology) - New World Encyclopedia
Porphyry is a variety of igneous rock consisting of large-grained crystals, such as feldspar or quartz, dispersed in a fine-grained feldspathic matrix or groundmass. The larger crystals are called phenocrysts .
Porphyry’s Introduction/translated with a commentary by Jonathan Barnes. p. cm.—(Clarendon later ancient philosophers) Includes bibliographical references and index.
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