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 /; Greek: Πορφύριος, Porphýrios; c. 234 – c. AD 305) was a Neoplatonic philosopher born in Tyre, Roman Phoenicia [1] during Roman rule. [a] [1] [2] He edited and published The Enneads, the only collection of the work of Plotinus, his teacher.
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).
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 - 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.
What Is Porphyry? How Does It Form, and In Which Rocks?
2022年9月2日 · Today, we will discuss porphyry’s definition or meaning and how this texture is formed. Afterward, we will give you ten porphyritic rocks with their images. Please note that this discussion is not about Porphyry, the Tyrian Neoplatonic philosopher, the porphyry house system, or the tree of porphyry. It is about petrology. What is porphyry?
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 copper deposit - Wikipedia
Porphyry copper deposits are copper ore bodies that are formed from hydrothermal fluids that originate from a voluminous magma chamber several kilometers below the deposit itself.
Porphyry (Stanford Encyclopedia of Philosophy/Fall 2017 Edition)
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 (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 .